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POWER ELECTRONICS PRODUCTS LIST

1. Provision to control the duty cycle ratio from external source voltage 0 5V Power ON OFF switch necessary test points for firing circuits SUGGESTED EXPERIMENTS 1l High voltage auxiliary SCR commutated chopper with R RL load 2 Speed control of DC shunt motor using SCR chopper 9 SPEED CONTROL OF SINGLE PHASE INDUCTION MOTOR USING CYCLO CONVERTER PEC14HV9 This module is designed for center tap transformer Cyclo Converter It consists of 4 synchronized firing pulses 4 SCRs Relevant Power supply etc for frequency division of 1 2 3 amp 4 Main Circuit 4 SCRs Rating 1200V 25Amp 4 Synchronized firing pulses to trigger SCRs Digital firing for frequency division of 1 2 3 amp 4 Power Supply Input 230V 10 50Hz single phase AC 15V DC 0 5A regulated output for the trigger circuits Center tape Transformer Output 0 230Volt AC Frequency 50 2 HZ 50 3 HZ amp 50 4 HZ The output can be loaded with R L or AC MOTOR 0 5hp Experiment Study of Speed control of AC motor using Cyclo Convertor 10 SPEED CONTROL OF THREE PHASE SLIP RING INDUCTION MOTOR USING STATIC KRAMER DRIVE PEC16HV10B This setup designed for open loop speed control of 3 phase Slip Ring induction motor using SCR converter amp inverter circuit Tt consists of three major parts namely SCR 3 phase inverter SCR 3 phase inverter firing circuit Slip ring induction mot
2. One No toggle switch for gate pulse ON OFF One No TRIAC with snubber amp fuse for AC regulator power circuit 24V AC lamp with ON OFF switch for power circuit input One o fixed R and L used as load for power circuit 230V 50Hz AC input fuse provided for over load protection One no rocker switch for power ON OFF SUGGESTED EXPERIMENTS Single phase AC regulator using TRIAC with R and RL load SINGLE PHASE SCR HALF CONTROLLED CONVERTER PEC14M14HW Consists of firing circuit SCR power circuit and load Line synchronized IC based linear firing circuit for SCR Line synchronization achieved by 230 9V step down transformer Four no firing pulse to trigger SCR 1 1 Pulse transformer used for SCR gate pulse isolation One no potentiometer used to vary the firing angle 180 Od Carrier logic implemented carrier frequency 4KHz One no toggle switch with debounce logic for pulse ON OFF Provision to control the firing angle through external 0 5V Power circuit consists of two No s SCR and two power diode with fuse protection Anode Cathode Gate terminals are terminated in the front panel for user connection 24V AC LAMP provided for power circuit input with ON OFF switch One no fixed R L load provided 230V 50Hz AC input with ON OFF rocker switch fuse for over load SUGGESTED EXPERIMENTS l 12 Single phase hal
3. One Potentiometer provided to vary the DC Input of inverter fed from three frequency of the inverter from 10Hz 50 phase SCR converter Hz One Potentiometer provided to vary the 11 THREE PHASE CYCLO frequency of the inverter CONVERTER PECI14HVI11 All gate pulses are Isolated by pulse isolation transformer Four SCRs rated 1200V 25A provided Two Diodes rated 1200V 6A provided 4 Nos of Commutating capacitors and 1 No of center tapped inductors Rating at 120mH 4A provided All SCRs Diodes Capacitors amp Inductors forms Single phase inverter with 180 mode conduction This module is designed for three DC Input of inverter fed from three phase half wave step down phase SCR converter cycloconverter It consists of 18 Synchronized firing 10 THREE PHASE MC MURRAY BED pulses 18 SCRs Relevant power FORD FULL BRIDGE INVERTER supply and circuitry for frequency VPET 111 divisions Main Circuit 18 Nos SCR with RC snubber protection is provided for 3 cycloconverter power circuit each phase consist of 6 SCRs Rated at 1200 V 25 Amps 3 Nos center tapped inductor 0 50 100 is provided for power circuit Six isolated gate pulses are provided 18 Nos isolated gate pulses for SCR to fire the six number of SCRs power circuit One Potentiometer provided to vary One potentiometer is provided to vary the frequency of the inverter from the frequency 10Hz 50 Hz One potentiometer
4. 1200V 25A converter Bridge for AC DC power conversion 1 No of Hall Effect current sensors to sense the output current of the Inverter Bridge All the PWM signals are isolated using Opto Isolator Protection circuit for over current with LED indication Independent Power supplies for all Isolated circuits Voltmeter to Indicate the DC Link Voltage All current PWMS amp Feedbacks are terminated at Front panel FRC Connectors are provided to Interface with the External digital controllers All the Input Output Lines are Terminated at Banana sockets 7 THREE PHASE IGBT POWER MODULE PEC16M3 3 Power Module is designed for Motor control Applications and UPS Application IGBT amp DIODE used as power device Input 1 Phase 50 Hz AC Output 1 3 AC V F control for 3 d drive applications ii 3m AC Output for UPS Applications Voltage control 1200V 25A 3 Phase IGBT Inverter Bridge Additional Features 1200V 25A converter Bridge for AC DC power conversion 1 No of Hall Effect current sensors to sense the output current of the Inverter Bridge All the PWM signals are isolated using Opto Isolator Protection circuit for over current with LED indication Independent Power supplies for all Isolated circuits Voltmeter to Indicate the DC Link Voltage All current PWMS amp Feedbacks are terminated at Front panel FRC Connectors are provided to Interface with the External digital
5. 230V 50Hz AC input 15V DC LAMP for control circuit One no fuse provided for power supply protection necessary test points provided SUGGESTED EXPERIMENTS 1 Study of parallel inverter firing circuit 2 Testing of parallel inverter with R load with frequency variation 12 MORGANS CHOPPER CIRCUIT TRAINER PEC14M20 i This trainer is designed to implement and demonstrate Morgan chopper circuit It can be used for speed control of PMDC motor using Morgan chopper Single SCR with snubber circuit and one diode is provided Capacitor and inductor is provided for commutation 24V DC 3 Amp Power supply is provided for chopper input 15V 1Amp for internal control circuit Isolation is provided for gate pulse 13 JONES CHOPPER TRAINER MODULE PEC14M21 Two nos SCR with RC supper provision Two nos Diodes and one fixed load resistor One center tapped 0 50 100 inductor 120mh for power circuit with one commutating capacitor Two isolated firing pulses to fire SCR Two nos Toggle switches to switch ON Auxiliary SCR pulse and main SCR pulse One 24V 1A Fixed DC Supply for power circuit and one toggle switch to ON OFF DC supply All input and outputs of Power circuit components SCR DIODE LOAD are terminated in a PCB for student patching Necessary test points for study of firing circuit One Potentiometer for Duty cycle variation 14 UJT FIRING CIRCUIT FOR SC
6. POWER ELELCTRONICS TRAINERS PRODUCT CATALOGUE t N E D Vi Microsystems Pyt Ltd Sty a i Plot No 75 Electronics Estate HOSSA Perungudi Chennai 600 096 INDIA HS e Phone 91 44 24961842 2496 1852 Ws Fax 91 44 2496 1536 E Mail sales vimicrosystems com Web www vimicrosystems com 1 POWER ELECTRONICS PRODUCTS LIST PART I SCR RELATED PRODUCTS SCR CHARACTERISTICS TRAINER SCR MOSFET IGBT amp TRIAC Static characteristics module SCR VI Characteristics study trainer TRIAC VI Characteristics study trainer DIAC VI Characteristics study trainer Transient Characteristics of SCR and MOSFET Switching Characteristics of SIT Construction of SCR using two transistor Ce oS eg SCR TRIGGERING CIRCUITS TRAINERS Types of Triggering Modules R R C UJT Triggering circuit module 555 Timer Triggering circuit module Single phase Triggering Module Single phase bridge firing circuit with PI control Chopper firing circuit module Cyclo convertor Firing module Cosine firing circuit for SCR converter Microprocessor based Single phase SCR firing circuits Microprocessor based Three phase SCR firing circuits 10 TCA 785 IC based Single phase SCR firing circuit 11 TCA 785 IC based Three phase SCR firing circuit 12 SCR Triggering circuit trainer OWNAAR WN Types of Power Modules Device Module SCR TRIAC DIAC amp DIODE L C Module SCR Module TRIAC Module DIODE Module a oe o
7. Converter 6 Diodes 120 volt PIV 25 Amp to form the bridge Fuse provided Inverter 6 Thyristors 1200 Volt PIV 25 amp The SCRs are mounted on suitable heat sinks and Snubber circuit is provided to each device One 3 Transformer provided to feedback the recovered power to the line One Auto Transformer provided controls manually the power feed back to the line Power meters provided at various points to monitor to power consumed A power control panel is provided to fix various Volt meters Current meters and Power meters The panel consists of a Auto Transformer b ON OFF Switch c Volt meter d Current meter e Switches to select various options f One Volt meter One Current meter to show the generator Voltage output and Current output 3 Ammeters to show the 3 phase currents of Inverter output One Ammeter and One Voltmeter to show the Current and Voltage output of the Converter 3 Ammeter provided to show the 3 Current outputs of Rotor 3 Ammeter provided to show the 3 Current outputs of Stator 3 Ammeter and One Voltmeter provided to monitor the 3 current input from the line Hall effect current transducer are provided to measure 1 Stator Currents 11 Rotor Currents 11 Converter Output Current iv Inverter output currents Hall effect voltage transducer are provided to measure voltages at various points of the experimental setup Fig 4 Necessary test points prov
8. PEC LV ACC3A Volt 12V DC Amp 1 5A De Torque Ikgcm Speed 1500 rpm Double side shaft extension Speed sensor with digital speed indicator 24V PMDC MOTOR LOAD PEC LV ACC3B Volt 24v de Amp 1 25a dc Torque lkgcm Speed 1500 rpm Double side shaft extension Speed sensor with digital speed indicator 12V AC SERVO MOTOR LOAD PEC LV ACC3C Power 10w Volt 12v AC Control winding voltage Speed 2500 rpm Double side shaft extension Speed sensor with digital speed indicator HIGH VOLTAGE ACCESSORIES 3 THREE PHASE LOADING RHEOSTAT PEC HV ACCIC RESISTIVE LOAD PEC HV ACC1 SINGLE PHASE LOADING RHEOSTAT PEC HV ACC1A Ikw rating Three phase input Different selector switch provided for current selection Fuse provided for input protection All are mounted on a moveable cabinet Banana connector provided for load input Ikw rating Single phase input Different selector switch provided for current selection Fuse provided for input protection All are mounted on a moveable cabinet THREE PHASE LOADING RHEOSTAT PEC HV ACC1D Banana connector provided for load input SINGLE PHASE LOADING RHEOSTAT PEC HV ACC1B 3kw rating Three phase input Different selector switch provided for current selection Fuse provided for input protection All are mounted on a moveable cabinet Banana connector provided fo
9. PEC16M1 Basic switching characteristics study trainer Consists of three separate sections for IGBT MOSFET and BJT power circuit Each sections consists of power device and driver section and fixed load resistors Transistorized Darlington amplifier used for driver circuit One no fixed 15V 1Amp DC power supply for power section input One no toggle switch used to ON OFF 15V DC with LED indication 555 IC based square wave generation for device base input One no toggle switch to select two range of frequency For IGBT MOSFET characteristics switching frequency is 5KHz and for BJT 7 KHz All three sections base gate input and collector drain inputs are terminated at banana sockets FOR ALL 1 Measurement of On delay period Tp ON Measurement Rising period T Measurement of Turn On period T ON Measurement of Conduction period T Measurement of Storage period CT Measurement of Falling period T Measurement of Turn OFF period T OFF Measurement of OFF period ee ae 40 5 Study of Dynamic IGBT MOSFET SCR TRIAC DIAC CHARACTERISTICS STUDY TRAINER PEC16M1 A Basic static characteristics study trainer LM 723 based variable DC power supply 0 30V for SCR Vak LM 723 based variable DC power supply O 12V for gate voltage of all devices Separate section for SCR TRIAC characteristics Separate section for IGBT MOSFET characteristics Tw
10. b i Armature control circuit MOSFET Based chopper circuit to vary armature voltage 0 200V DC IC based PWM controller circuit with opto isolator and gate drive circuit Open loop operation One potentiometer used to vary the Armature Voltage b i Field Control Circuit MOSFET Based chopper circuit to vary Field voltage 1OO0V 220V DC IC based PWM controller circuit with opto isolator and gate drive circuit One Potentiometer used to vary O P voltage c Other Features One no of Push button for braking operation One potentiometer used to set of braking 10 90 One no of push button for Inching operation 60 12 ELECTRICAL BRAKING THREE PHASE INDUCTION MOTOR VPET 405 This trainer is designed to study the working principle and demonstrate various section of a Three phase IGBT Based SPWM Inverter amp V F Control This trainer 1s provided with Hall Effect Current Transducers at required lines for protection and used for measuring the current The front panel mimic diagram shows various section of the trainer like Power circuitry Protection Input circuitry etc Various Test points provided at the front panel allows the students to study various signals of the circuitry of the trainer FEATURES IGBT based sine wave Inverter Output Input 230V AC 3 Output 5 Amps per Phase Frequency 10Hz 50Hz Hall Effect Current Transducer provided to measure DC link voltage and AC output
11. circuit amp load 2n2646 ujt based firing pulse generation 230 24vac provided for ujt firing circuit input and also line synchronization 1 1 pulse transformer used for gate pulse isolation One number of potentiometer used for firing angle adjustment 10 170d Pulse output terminated at connector in the pcb for scr patching One number Tyn612 scr with heat sink fixed load resistor forms half wave controlled converter power circuit 24v ac 2Zamp provided for power circuit input with on off switch Fuse provided for protection LAMP CONTROL USING DIAC TRIAC VPET 201 Consists of triac based ac regulator for lamp intensity control Diac r amp c used for triac firing pulse variation One number of potentiometer used ac variable R for firing angle variation 230v ac input for power circuit One number of illuminated switch provided for 230v on off Fuse provided for input side to avoid overload One number of 230v lamp provided for load One number 230 9v step down transformer provided for output waveform measurement in cro All are mounted in the pcb fixed with wooden cabinets BASIC SERIES INVERTER TRAINER VPET 207 11 Consists of scr firing circuit scr inverter power circuit output L C filter IC based firing pulse generation to trigger two Scrs One number of potentiometer provided for firing pulse frequency variation 300 600hz Pulse tra
12. firing 4 Single phase half wave controlled converter using RC firing 2 555 FIRING MODULE PEC14M13 555 Timer based SCR triggering pulse generation Four No s firing pulse to trigger SCR for AC converters regulators applications 1 1 1 Pulse transformer used for pulse isolation One No potentiometer used to vary the firing angle 180 0 All four pulses terminated on the front panel for external interface with SCR device module PEC14M15 24V AC 1AMP for power circuit input voltage One No toggle switch for ON OFF 24VAC One No SCR with snubber circuit forms half wave controlled converter circuit for checking the firing circuit 230V 50HZ AC input fuse provided for over load protection One no rocker switch with LED indications for power ON OFF SUGGESTED EXPERIMENTS 1 Study of 555 firing circuit Single phase half wave controlled converter using 555 firing By external interface with SCR device module PECI4M15 the following experiments can be connected additionally 3 Single phase half controlled converter using 555 firing 4 Single phase fully controlled converter using 555 firing 3 SINGLE PHASE TRIGGERING MODULE PEC14M14 Line synchronized IC based linear firing circuit Line synchronization achieved by step down transformer Four No firing pulses to trigger four SCRs 1 1 1 Pulse transformer used for SCR gate pulse isolati
13. hall effect current sensor for output DC current measurement and protection Output over current short circuit protection with LED indication Three phase diode bridge converter and filter capacitor for input DC voltage of IGBT chopper power circuit One voltmeter indicate DC rail voltage MCB for input ON OFF over current SPECIFICATION Input voltage 440V AC 3phase 50Hz Output voltage 0 to 200V DC Oto 200V DC variable voltage Output rating 10Ams Two no IGBT forms two quadrant chopper for field circuit Separate control circuit for PWM generation One pot used to vary the dutycycle ratio of PWM Separate opto driver circuit provided for two quadrant chopper 8 SO00VA ON LINE OFF LINE UPS TRAINER PECI6HV4 This set up consists of 24V battery module battery charger UPS controller module BATTERY 2No 12V 60AH Battery connected in series with fuse protection BATTERY CHARGER SCR Based battery charger Current set potentiometer for setting charging current LED indication for over triggle charge 230V AC input UPS CONTROLLER MOSFET Based push pull inverter G3525 used for PWM generation Three no potentiometer used to vary frequency duty cycle dead time Separate cycle for battery level monitoring with low high volt LED indication Provision to select online offline UPS More than 10 no toggle switch for fault analy
14. 1200v SOAmps Diode with heatsink is fixed on a open wooden box with A K terminals are brought out by banana socket RC snubber circuit and fuse are provided A LOW VOLTAGE SCR APPLICATION TRAINER 1 SINGLE PHASE AC VOLTAGE CONTROLLER PECI4M14AC Consists of firing circuit SCR power circuit and load Line synchronized IC based linear firing circuit Line synchronization achieved by 230 9V step down transformer Two No s firing pulses to trigger two SCRs connected in anti parallel 1 1 1 Pulse transformer used for SCR gate pulse isolation One No s potentiometer used to vary the firing angle 180 0 Carrier logic implemented frequency 4KHz carrier One No toggle switch with debounce logic for pulse ON OFF Provision to control the firing angle through external 0 5V DC optional Power circuit consists of two No s SCR with snubber circuit amp fuse Anode Cathode Gate terminals are terminated in the front panel for user connection 24V AC LAMP provided for power circuit input with ON OFF switch One No fixed R L load provided for power circuit 230V 50Hz AC input with ON OFF rocker switch fuse for over load SUGGESTED EXPERIMENTS 1 Single phase AC regulator with R and R L load 2 SINGLE PHASE AC VOLTAGE CONTROLLER USING TRIAC PEC14M14AC 1 Line synchronized IC based linear firing circuit for TRIAC Line synchroniza
15. 12Amp A Potentiometer is provided to vary the load power Snubber circuit is provided to each devices Circuits for commutation triggering SCRs are provided POWER SUPPLY Input 230V 10 50Hz single phase AC 24 Volt DC 2 Amp to feed inverter 15V DC 0 5A regulated output for the trigger circuits 21 8 amp SINGLE PHASE CYCLO CONVERTER HIGH VOLTAGE PEC14HV9 This module is designed for center tap transformer Cyclo Converter It consists of 4 synchronized firing pulses 4 SCRs Relevant Power supply etc for frequency division of 1 2 3 amp 4 Main Circuit 4 SCRs Rating 1200V 25Amp 4 Synchronized firing pulses to trigger SCRs Digital firing for frequency division of 1 2 3 amp 4 Power Supply Input 230V 10 50Hz single phase AC 15V DC 0 5A regulated output for the trigger circuits Center tape Transformer Output 0 230Volt AC Frequency 50 2 HZ 50 3 HZ amp 50 4 HZ The output can be loaded with R L or AC MOTOR 0 5hp Experiment Study of Speed control of AC motor using Cyclo Convertor 9 SINGLE PHASE MC MURRAY 6 Nos of Commutating capacitors and BED FORD FULL BRIDGE 3 Nos of center tapped inductors INVERTER VPET 111A Rating at 120mH 4A provided All 6 Nos of SCRs Diodes Four isolated gate pulses are provided to Capacitors amp Inductors forms 3 phase fire the Four number of SCRs inverter with 180 mode conduction
16. A Nice text lab manual is provided 58 8 DC POSITION CONTROL SYSTEM PEC 01 This trainer system 1s acompact amp advanced version for class room experiment set up for the students to operate and study a practical position control system A variety of Experiments can be conducted using this Trainer system The DC motor position control trainer consists of 1 Controller 2 Converter 3 Mechanical Setup CONTROLLER 2 Analog PI controller provided for speed control amp position control One Optional Each PI controller provided with Front panel variable setting for a Variable gain for Proportional controller P b Variable Integral Time for Integral controller I CONVERTER 4 Quadrant MOSFET chopper provided for forward amp reverse direction MOSFET driver provided MECHANICAL SETUP One PMDC 12 volt with Gear provided Motor speed 1500 rpm Gear ratio 30 1 to run 5Ormp speed One Servo potentiometer provided at the low speed shaft Optionally one PMDC Motor can be coupled to the motor as load OTHER FEATURES One Tachogenerator is provided for speed feedback One 3 2 digit display can be used to display the actual amp reference position 3 digit 9 DSP BASED DC MOTOR POSITION CONTROL VPET 107 This trainer system is a compact amp advanced version for class room experiment set up for the students to operate and study a practical position control system A v
17. DC MOTOR GENERATOR LOAD SET UP PEC HV ACC3K This set up consists of one number of 1 pmdc motor coupled with 2 1 HP pmdc generator act as load with 3 digital speed indicator Pmdc motor spec Power Lhp 75kw pmdc motor Armature voltage 180vdc S5amp Speed 1500 rpm Double side shaft extension Make pranshu Pmdc generator spec Power Ihp 75kw pmdc motor act as generator Armature voltage 180vdc S5amp Speed 1500 rpm Double side shaft extension Make pranshu Both motor and generator are coupled with base plate 75 9 1 HP PMDC MOTOR EDDY CURRENT LOAD SET UP PEC HV ACC3L This set up consists of one number of 1 pmdc motor coupled with 2 eddy current load set up with 3 digital speed and torque indicator Pmdc motor spec Power Lhp 75kw pmdc motor Armature voltage 180vdc 5amp Speed 1500 rpm Double side shaft extension Make pranshu Eddy current load set up 1 hp rating 0 80v lamp current rating 1500 rpm speed Electronic dc voltage controller provided for torque variation Torque sensor with torque indicator Speed sensor with speed indicator Both motor and eddy set up coupled with base plate 10 1 HP DC SERIES MOTOR LOAD SET UP PEC HV ACC3G This set up consists of one number of 1 dc series motor coupled with 2 mechanical spring balance load set up with 3 digital speed indicator Dc motor spec Power Lhp 75kw Armature voltage 220vdc 4amp Speed 1500 rpm Dou
18. No s DPM for AC regulator output voltage current measurement Three no potentiometer used to vary armature field AC voltage Over current field failure protection MCB for input ON OFF Shut down status indicator and reset switch for protection circuit SUGGESTED EXPERIMENTS 1 Determination of transfer function of armature controlled DC motor A Speed Vs Armature voltage transfer function B Speed Vs torque transfer function C Armature current Vs voltage transfer function D Current Vs torque trans function 2 Determination of transfer function of field controlled DC motor LEONARD SPEED CONTROL SYSTEM OF DC SHUNT MOTOR PEC14HV2 This trainer is designed to drive the 1HP DC motor optional using ward Leonard system so that varies parameters of DC motor can be found experimentally Tt consists of 1 1HP AC motor coupled with 1HP DC generator 2 1HP DC motor with mechanical loading arrangement ht consists of SCR based fully controlled converter for field voltage variation 0 200V DC variable LAMP of DC generator One no SCR based AC regulator for motor generator winding inductance measurement 0 100V AC LAMP variable One no diode bridge converter for DC motor filed voltage 200V fixed One no DPM for field voltage measurement One no potentiometer used to vary field DC voltage One no toggle switch to reverse the voltage Over current field
19. Parallel Inverter Firing Circuit IC Based 3 square wave generation with 120 phase shift with frequency variation One number of potentiometer provided for frequency adjustment 20 60Hz Six numbers of pulse transformer provided for SCR gate pulse isolation Gate carrier logic implemented for SCR gate pulses One number of toggle switch with debounce logic provided for all six pulse ON OFF All pulses are terminated in the front panel for SCR patching Necessary test points provided on the control circuit for waveform measurement b Parallel inverter Power Circuit Six number of TYN 1225 SCR with suitable heat sink snubber circuit provided for power circuit Six number of power diode provided for fly back operation Three number of ac capacitor provided for SCR commutation One number of three phase 24 24 0 24 24 0 24V 3 Amp transformer provided for parallel inverter power circuit Necessary terminals of SCR diode transformer are terminated in the panel for wiring c LM723 based 24V DC Source for parallel inverter input LM723 based 24V power supply provided for parallel inverter input 3 Amp Capacity Overload short circuit protection facility LED provided for DC indication 7 SINGLE PHASE SERIES INVERTER HIGH VOLTAGE PEC14HV6 This module is designed to demonstrate the working principle of Thyristorised Series Inverter MAIN CIRCUIT 2 SCRs Rating 600V
20. Various protection circuits provided Mimics circuit screen printed in the front panel More than 8 Test points are provided Housed in a sleek box POWER CIRCUIT Un controlled Bridge rectifier Rated for 600 35Amps for converting AC input to DC link voltage DC link capacitors provided 6 Number of IGBTs are provided to form three half bridges Snubber circuit is provided to each device High speed Optos are provided to isolate gate control circuitry IGBT IC drivers are used to drive switches Output 0 to 220Volt AC 5 Amp at each phase One MCB provided to switch on the AC input to the power circuit One DC Voltmeter provided to measure the DC link voltage One hall effect current transducer provided in the DC link bus and used for protection The AC output of IGBT bridges are terminated at banana sockets Two Hall effect current transducer provided in the Two phase output lines and used for protection Test points provided on the Front panel DC link Current DC link Voltage 3 Phase output currents PROTECTIONS The protection circuit monitors 1 DC link voltage 11 DC link current 111 2 Phase output currents and takes appropriate protection like Over Voltage Under Voltage and Over Load One LED to indicate the Shut Down condition due to protection One Reset switch is provided to restart the operation One Control amp Power circuit in DC rail for Breaking over voltag
21. aIGBT 4 Quadrant Chopper Drive This trainer is provided with Hall Effect Current Transducers at required lines for protection and used for measuring the current The front panel mimic diagram shows various section of the trainer like Power circuitry Protection Input circuitry etc Various Test points provided at the front panel allows the students to study various signals of the circuitry of the trainer FEATURE 4 Quadrant Chopper for Armature for bidirectional drive for Separately exiting DC motor of 1hp 3hp Separate variable field system is IGBT chopper Hall Effect Current Transducer for measuring Armature Field Currents amp DC link Bus Regenerative Breaking provided POWER CIRCUIT Uncontrolled Bridge rectifier Rated for 600V 35Amps for converting AC input to DC link voltage DC link capacitors provided 4 Nos of IGBT for Armature voltage and to form a 4 quadrant Drive One IGBT for Field voltage Rating of 600Volt 8 Amp Snubber circuit is provided to each device High speed Optos are provided to isolate gate control circuitry IGBT IC drivers are used to drive switches One MCB provided to switch on the AC input to the Power circuit One DC Voltmeter provided to measure the DC link voltage One hall effect current transducer provided in the DC link bus for measure the current of DC link bus and used for protection The DC output of IGBT bridge is terminated at banana sock
22. cathode VI characteristics of SCR at different gate current 3 TRIAC VI CHARACTERISTICS STUDY TRAINER PECI6M1C Basic VI characteristics study trainer Consists of one no BTA12 TRIAC with heat sink LM723 based 20V DC power supply for gate voltage One no potentiometer used to vary the gate current 0 30 50V DC variable power supply for MT1 MT2 voltage variation One no potentiometer used to vary the Vmtl mt2 One no high wattage fixed load resistor One no toggle switch to ON OFF gate voltage Two no DC ammeter voltmeter multimeter provided to measure device parameters 230V AC input Power ON OFF switch with indication All components are mounted on a screen printed PCB fixed on a nice wooden cabinets SUGGESTED EXPERIMENTS 1 Static VI characteristics of TRIAC at different gate current 4 DIAC VI CHARACTERISTICS STUDY TRAINER PECI6MI1E Basic DIAC VI characteristics study trainer Consists of one no DIAC with proper heat sink 0 100 30V DC variable power supply for MT1 MT2 voltage variation One no potentiometer used to vary the MT1 MT2 voltage One no high wattage fixed load resistor One no toggle switch to ON OFF DC voltage Two No s DC ammeter voltmeter multimeter provided to measure device parameters 230V AC input Power ON OFF switch LED indication All components are mounted on a screen printed PCB fixed on a n
23. controllers All the Input Output Lines are Terminated at Banana sockets THREE PHASE PWM INVERTER CONTROL MODULE PEC16M4 36 45 This module provides the gating signals for a three phase full bridge inverter obtained through a sine pulse width modulation PWM technique FEATURES It generates 6 Nos of PWM to trigger the 6 IGBTs provided in the device module for Inverter application Device module Optional Sine PWM technique is used 3 Phase sine wave with 120 phase shift generated through ICs Frequency and amplitude V F or V F can be controlled by adjusting potentiometer One no of carrier wave generation block Generate 3KHz Frequency 3 Nos of PWM IC generate PWM with comparison of each phase amp carrier wave 3 PWM inverted by using NOT gate Final output of 6 PWM used to trigger 6 Nos of IGBT MOSFET Device module with frequency amplitude control Test points are provided to check the waveforms at various stages of the PWM circuitry Built in power supplies for the control circuitry 230V 50Hz 15V amp 5V The module is bought out in a sleek box 9 IGBT BASED CHOPPER CIRCUIT PEC16M3 M5 It consists of four quadrant chopper control circuit IGBT power circuit load etc CHOPPER CONTROL CIRCUIT IC Based carrier triangular wave generation with variable frequency One no potentiometer used to vary the carrier frequency 2KHz to 4KHz LM311 Based
24. eddy current load set up PEC HV ACC30 1 hp single phase ac motor motor spring balance load set up PEC HV ACC3P 1 hp single phase acmotor dc generator load set up PEC HV ACC3Q 1 hp single phase ac motor eddy current load set up PEC HV ACC3R 1 hp three phase ac motor motor spring balance load set up PEC HV ACC3S 1 hp three phase acmotor dc generator load set up PEC HV ACC3T 1 hp three phase ac motor eddy current load set up PEC HV ACC3U 3 hp slip ring motor spring balance load set up PEC HV ACC3V 3 hp slip ring motor generator load set up PEC HV ACC3W 73 21 3 hp slip ring motor eddy current load set up PEC HV ACC3X 22 1 hp pmdc motor spring balance load set up PEC HV ACC3J 23 1 hp pmdc motor generator load set up PEC HV ACC3K 24 1 hp pmdc motor eddy current load set up PEC HV ACC3L 1 1 HP DC MOTOR LOAD SET UP PEC HV ACC3A This set up consists of one number of 1 de shunt motor coupled with 2 mechanical spring balance load set up with 3 digital speed indicator Dc motor spec Power Lhp 75kw Armature voltage 180vdc 5 lamp Field voltage 220vdc 0 3amp Speed 1500 rpm Double side shaft extension Make benn 2 1 HP DC MOTOR GENERATOR LOAD SET UP PEC HV ACC3B This set up consists of one number of 1 de shunt motor coupled with 2 1 HP dc shunt generator act as load with 3 digital speed indicator Dc motor spec Power Lhp 75kw shunt type Armature v
25. failure protection MCB for input ON OFF SUGGESTED EXPERIMENTS 1 Determination of transfer function of armature controlled DC motor A Speed Vs Armature voltage transfer function B Speed Vs torque transfer function C Armature current Vs voltage transfer function D Current Vs torque trans function 18 MICRO CONTROLLER BASED SLIP RING INDUCTION MOTOR SPEED CONTROL USING STATIC KRAMMER DRIVE PECI6HV10B This is designed for microcontroller controlled static slip power recovery drive in constant torque mode for steady state and transient state analysis including effects of core loss and saturation 34 This hardware will be suitable for speed control of Slip Ring Induction motor and monitoring many motor parameters for research purpose The full system consists of a 3 phase slip ring induction motor coupled with a DC Generator for Electrical loading a 3 phase converter to convert the rotor output to a DC link voltage a R L filter to smoothern amp reduce the ripple in the DC output voltage of the converter A 3 phase line commutated thyristorised inverter controlled by a Microcontroller based system The microcontroller based system 1s meant to provide firing pulses to thyristors of the inverter amp motor all motor parameters etc VPC 51 with Add on cards 8051 based Microcontroller system controls measures amp monitors all Analog amp Digital inputs amp Outputs AD DA card monitors all motor parame
26. for Field drive Snubber circuit is provided for each device High speed Optos are provided to isolate gate control circuitry IGBT IC drivers are used to drive switches One MCB provided to switch on the AC input to the Power circuit One DC Voltmeter provided to measure the DC link voltage One hall effect current transducer provided in the DC link bus for measure the current of DC link bus and used for protection The DC output of IGBT bridge is terminated at banana sockets and used as Armature voltage for the DC motor One Hall effect current transducer provided in the Armature line of the Motor to measure the Armature current and used for protection 57 One Hall effect current transducer provided in the Field line of Motor to measure the Field current and used for protection Test points provided on the Front panel DC link Current Voltage Armature current Field current Output voltage Armature Voltage 220 to 220V DC Armature Current 5Amp Field Voltage 170 to 220 Volt DC Field Current 2 Amp Input Voltage 415V 10 AC Three Phase PROTECTIONS The protection circuit monitors 1 Field current 11 Armature current 111 DC link voltage amp iv DC link current and take appreciate protection like field supply failure Over Voltage Over Armature Current protection etc One LED to indicate Shut Down One Reset switch is provided to restart the operation O
27. is provided to vary One Potentiometer provided to vary the output voltage the frequency of the inverter MCB protection All gate pulses are Isolated by pulse Housed in sleek screen printer cabinet isolation transformer Provision for V F control Six SCRs rated 1200V 25A provided Six Diodes rated 1200V 6A provided 22 Power Supply Input 440V 10 50Hz three phase AC supply 15V DC 9V 9V 9V AC 3q for the firing circuits Output Ranges Frequency Variation 1 Hz to 1 3 rd of supply frequency Approx 1 Hz to 16Hz Voltage Variation 0 to 90 of supply voltage 12 THREE PHASE DIODE CHARACTERISTICS TRAINER PECI4HVS5D It consists of 6 Nos of power diode rating at 1200V 25Amps All diodes A K terminals are terminated individually for different configuration Fuse provided for protection MCB Provision for 3 ON OFF Three phase step down transformer provided for low voltage operation Input 230V 230V 230V 3 Output 24 24 24 3 b 3Amps 4 Nos of Hall effect current sensor provided to measure input current and output current One no of hall effect voltage sensor provided to measure the output voltage Experiments 3 Half wave rectifier Common Cathode arrangement with R Load 3 Half wave rectifier Common Anode arrangement with R Load 3 Bridge rectifier with R Load 23 5 SCR BASED AC DC DRIVES 1 DC MOTOR SPEED CONTROL TRAINER PEC04 Th
28. logic for PWM ON OFF All four PWM outputs are terminated on the front panel for device module interface PEC16M2 M3 230V AC Input 15V 15V DC for control circuits This module can be interfaced with IGBT module PECI6M3 or MOSFET module PEC16M2 The following experiments can be done using this firing module amp device module combination 1 Single phase sine PWM inverter 2 Single phase square PWM inverter 3 Single phase trapezoidal PWM inverter SINGLE PHASE INVERTER CONTROL CIRCUIT PEC16M4 2 Four no gate signal to trigger four IGBT MOSFET IC Based carrier triangular wave generation with variable frequency One no potentiometer used to vary the carrier frequency 2KHz to 4KHz IC Based reference square wave generator with variable amplitude Potentiometer used to vary the frequency amplitude of reference signal LM311 Based comparator circuit It compares carrier amp reference wave One no toggle switch for PWM ON OFF All four PWM outputs are terminated on the front panel for device module interface 230V AC input 15V 15V DC for control circuits This module can be interfaced with IGBT module PECI6M3 or MOSFET module PEC16M2 The following experiments can be done using this firing module amp device module l Single phase single pulse square PWM inverter 5 CHOPPER CONTROL CIRCUITRY MODULE PEC16MS Four no gate signal
29. non circulating current mode operation Two No potentiometer used for firing angle adjustment in two modes Necessary test points for control circuits 7 DUAL CONVERTER POWER CIRCUIT PECI4HV6B Four No TYN1225 SCR based fully controlled converter for ve group converter Four no TYN1225 SCR based fully controlled converter for ve group converter All SCR gate pulses and necessary terminals are brought out for external connection One no 120mH center tapped inductor used for IGR SUGGESTED EXPERIMENTS Testing of dual converter with without circulating current mode 8 THYRISTOR DC CHOPPER PEC14HV7 Consists of SCR power circuit and firing circuit IC Based firing pulse generation to trigger auxiliary and main SCR Pulse transformer provided for gate pulse isolation One potentiometer used to vary the duty cycle ratio of PWM 10 90 Two no toggle switch with debounce logic for ON OFF gate pulse Power circuit consists of two no s TYN1225 SCR diode forms auxiliary SCR commutation circuit Fixed L C provided for power circuit commutation One no diode bridge converter with filter capacitor convert input 230V AC to DC for power circuit input MCB Provided for input AC ON OFF over current protection One no diode converter provided for field circuit DC motor control experiment optional 230V 50Hz Input Built in 15 15V DC for control circuit
30. of ADC used to read the battery voltage level for monitoring and protection 1 No of ADC used to read the battery current for protection and monitoring 1 No of I O used sense the main AC Status 6N137 Opto used to isolate the 4 PWMs IR3210 Drive IC used for IGBT gate driver One no of LCD display used to Indicate the Main Volt amp current Battery voltage amp current and Inverter Voltage amp current Provision to select ON line OFF line UPS DSP Controller used for To generate sine PWM pulses to trigger IGBT MOSFET inverter To generate gate pulses for SCR battery charger To select and control the various functions like Inverter closed loop Inverter over current protection Solar SCR Battery charger selection Mains sensing SCR Battery charger closed loop operation Battery charger over current protection Battery deep discharge over charge protection Selection of Solar charger SCR Charger Selection of on line off line mode of operation Display of all parameters like current voltage and temperature etc c Battery Module 24V 48V 90 AH Battery Two nos of 12V Battery connected in series One no of current sensing transformer and voltage sensing circuits for battery monitoring and protection d Battery Charger 1 Solar panel based battery charger i SCR Mains converter based battery charger i Solar Panel based Battery Charger IKW 0 5KW solar panel with nece
31. power supply Built in tor Vps One no of 555 based square wave generation with transistor driver circuit One no of fixed load resistor Power Supply 230V AC Input 415V DC for control circuit Power ON OFF switch with indication CHARACTERISTICS OF MOSFET amp IGBT VPET 202A DR Consists of one IGBT and one MOSFET power device One no of step down transformer diode bridge rectifier and Filter capacitor and 7812 regulator forms 12V DC 30V DC supply for device voltage variation One no of potentiometer to vary the gate current One no of potentiometer to vary the collector current Fixed load resistor Power ON OFF switch provided All necessary points terminated in the front panel Provision for connecting ammeter and voltmeter 6 MEASUREMENT OF PINCH OFF VOLTAGE OF MOSFET PEC 16M1F The static characteristics of the devices SCR MOSFET amp IGBT can be studied using this module FEATURES Consists of power devices SCR TRIAC MOSFET IGBT Two no of 12V fixed DC power supply and one no of 30V fixed power supply for characteristics of all devices Two no of potentiometer to vary the gate base current Two no of potentiometer to vary the Anode collector current Fixed load resistor LED indication for 12V 30V Power On Off switch provided All necessary points terminated in the front panel Provision for connecting ammeter and voltm
32. the control voltage Mechanical loading arrangement provided POWER SUPPLY Input 230V 10 50Hz Single phase AC 15V at 0 5A DC regulated output for control circuitry EXPERIMENTS Speed measurement of AC servo motor using optical sensor Study of closed loop control of a AC servo motor Study of Characteristics of AC servo motor i Speed Vs Armature Voltage ii Speed Vs Torque i Armature current Vs torque To determine the transfer function of the AC servo motor 13 OPEN CLOSED LOOP SPEED CONTROL AND TRANSFER FUNCTION OF AC SERVO MOTOR TRAINER PEC 00A This trainer is designed to drive the two phase AC servo motor both open loop and closed loop And study of transfer function of motor Two phase AC servo motor Main winding voltage 230V AC Control winding voltage 12V AC Speed 1500RPM Mechanical loading arrangement Speed sensor optical type fixed on the motor shaft for feedback amp speed display 31 It consists of SCR based AC regulator for control winding voltage variation 0 12V AC variable 5Amp capacity Op amp based linear triggering circuit for SCR AC regulator One no toggle switch to select open loop closed loop operation One no digital speed indicator to indicate set speed and actual speed Provision to control the motor speed through external 0 5V DC source 230V 50Hz AC input 15V 15V DC for control circuits SUGGESTED EXP
33. to trigger four IGBT MOSFET IC Based carrier triangular wave generation with variable frequency Potentiometer used to vary the carrier frequency 2KHz to 4KHz LM311 Based comparator circuit 1t compares carrier amp control voltage One no potentiometer used to vary the control voltage so as to vary the duty cycle ratio of PWM 5 to 95 IC Based control logic circuits for generation of PWM for different type of chopper Single Two Four quadrant One no rotary switch to select PWM for different types of chopper circuits One no toggle switch for PWM ON OFF All four PWM outputs are terminated on the front panel for device module interface PEC16M2 M3 230V AC Input 15V 15V DC control circuits 44 This module can be interfaced with IGBT module PECI6M3 or MOSFET module PEC16M2 optionally The following experiments can be using this firing module amp device module Combination Single quadrant chopper Two quadrant chopper Four quadrant chopper unipolar Four quadrant chopper bipolar a E 6 THREE PHASE MOSFET POWER MODULE PEC16M23 3 Power Module is designed for Motor control Applications and UPS Application IGBT amp DIODE used as power device Input 1 Phase 50 Hz AC Output i 3d AC V F control for 3 dh drive applications ii 3 AC Output for UPS Applications Voltage control 1200V 25A 3 Phase IGBT Inverter Bridge Additional Features
34. transistor amp PNP Transistor provided for SCR circuit One No DC voltage source for SCR in DC mode operation One No 24V AC voltage source for SCR in AC mode operation Simple firing circuit with firing angle variation for AC mode operation 2 SCR TRIGGERING CIRCUITS TRAINERS A TYPES OF TRIGGERING MODULE 1 UJT RRC FIRING MODULE PEC14M12 Consists of three types of basic firing circuit to trigger SCR Separate sections for R firing RC firing UJT firing circuit 24V AC 1AMP provided for firing circuit input voltage One potentiometer used to vary the firing angle of UJT firing circuit One potentiometer used to vary the firing angle of R firing circuit One potentiometer used to vary the firing angle of RC firing circuit One no toggle switch for ON OFF 24VAC Four No s firing pulses terminated on the front panel for connecting external device module UJT firing circuit 1 1 1 Pulse transformer used for UJT firing circuit pulse isolation One no SCR with snubber circuit forms half wave controlled converter circuit for checking all the three firing circuit 230V SOHZ AC input fuse provided for over load protection One no rocker switch with LED indication for power ON OFF SUGGESTED EXPERIMENTS 1 Study of UJT firing circuit 2 Single phase half wave controlled converter using UJT firing 3 Single phase half wave controlled converter using R
35. value of capacitor One no BTA12 TRIAC used as a AC regulator with termination One no 100W lamp used as a load SUGGESTED EXPERIMENTS SCR AC regulator using UJT firing circuit TRIAC AC regulator using DIAC firing circuit 7 SCR DC CIRCUIT BREAKER VPET 100 SCR Based Complementary commutated chopper used as a DC circuit breaker Two No s TYN612 SCR with heartsick used for main and auxiliary SCR One no AC capacitor used for commutation One no fixed resistor used as load for auxiliary SCR circuit One no current sensing resistor provided m main SCR for load current sensing Three No s SPDT provided for load current variation One no push to on switch to on the main SCR One no push to on switch to auxiliary SCR to off main SCR Two No s LED to indicate the two SCR on status One no DC ammeter 0 3Amp for load current indication One no 30V DC 3Amp unregulated power supply for circuit breaker input One no toggle switch to ON OFF DC power supply Fuse provided for protection All are mounted on a nice wooden cabinet SUGGESTED EXPERIMENTS 1 Testing of DC circuit breaker with different current setting 8 ZERO VOLTAGE SWITCHING USING SCR TRIAC PEC14M9 HARDWARE DETAILS Model PECI4M19 Integrated circuit based 3059 3079 ZVS circuit 39 Power circuit consists of one SCR and one TRIAC user can select either one device at a ti
36. voltage 180vdc 15 amp Field voltage 220vdc 0 8amp Speed 1500 rpm Double side shaft extension Make benn 14 3 HP DC MOTOR GENERATOR LOAD SET UP PEC HV ACC3B This set up consists of one number of 1 dc shunt motor coupled with 2 1 HP de shunt generator act as load with 3 digital speed indicator Dc motor spec Power 3hp 2 2kw shunt type Armature voltage 180vdc 15 lamp Field voltage 220vdc 0 8amp Speed 1500 rpm Double side shaft extension Make benn De generator spec Power 3hp 1 8kw shunt type Armature voltage 180vdc 7amp Field voltage 220vdc 0 8amp Speed 1500 rpm Double side shaft extension Make benn Both motor and generator are coupled with base plate 15 3 HP DC MOTOR EDDY CURRENT LOAD SET UP PEC HV ACC3C This set up consists of one number of 1 dc shunt motor coupled with 2 eddy current load set up with 3 digital speed and torque indicator Dc motor spec Power 3hp 2 2kw Armature voltage 180vdc 15 lamp Field voltage 220vdc 0 8amp Speed 1500 rpm Double side shaft extension Make benn Eddy current load set up 3 hp rating 0 80v 3amp current rating 1500 rpm speed Electronic dc voltage controller provided for torque variation Torque sensor with torque indicator Speed sensor with speed indicator Both motor and eddy set up coupled with base plate 16 1 HP SINGLE PHASE INDUCTION MOTOR LOAD SET UP PEC HV ACC3M This set up consists of one number of 1 single phase ac m
37. 14HV6 PEC14HV7 PEC14M7HV PEC14HV12 PEC14HV6 PEC14HV9 VPET 111A VPET 111 PEC14HV11 PEC14HV5D PEC 04 PEC14HV4C PEC14HV5C VPET 301 VPET 302A PEC 03A PECI4HV6A PEC14HV7 PEC14HV9 PEC16HV10B PEC14M21A PEC 02 PEC 00A VPET 302 VPET 300A PECI4HV1 PEC14HV2 18 Microcontroller based Slip Ring induction motor speed control using Static Krammer Drive 19 DSP Based Static Krammer Drive 6 STANDALONE SCR TRAINERS UJT Characteristic and Oscillator study module Digital Measurement of phase angle AC solid state relay using Opto coupler Isolation SCR ring counter module Fast Recovery Diode Characteristics study module AC phase control using SCR DIAC amp TRIAC SCR DC circuit breaker Zero Voltage switching using SCR TRIAC Optical TRIAC System 0 Automatic Lighting control using SCR amp Opto electronic components e oe a ee PART II IGBT MOSFET RELATED PRODUCTS PEC16HV10B PEC16HV10C PEC14M5 PEC14M19 PEC14M10 PEC14M11 VPET 304 PEC14M22 VPET 100 PEC14M9 VPET 400 VPET 401 1 IGBT MOSFET STATIC AND DYNAMIC CHARACTERISTICS TRAINER BJT IGBT MOSFET Characteristics trainer IGBT MOSFET SCR amp TRIAC Static characteristics module IGBT characteristics trainer Transient Characteristics of SCR and MOSFET Characteristics of MOSFET amp IGBT Measurement of pinch off voltage of MOSFET E E EE e SE PEC16M1 PEC
38. 15V DC 0 5A regulated output for the control circuitry 6 STANDALONE SCR TRAINERS 1 UJT CHARACTERISTIC AND OSCILLATOR STUDY MODULE PEC14MS5 This module has been designed to study and demonstrate the building up a UJT Relaxation Oscillator and use this circuit to trigger a SCR This circuit also provides a Time Delay Most of the circuit points are terminated on SPRING the individual components can be inserted externally by students which makes a student a deep understanding in the UJT Relaxation circuit UJT Relaxation Oscillator is used to generate triggering pulses for SCR By using UJT Relaxation Oscillator the SCR is working as a ON DELAY TIMER and AC Regulation Circuits to study UJT Relaxation Oscillator Most of the circuit points are terminated on spring so that components can be inserted externally Maximum components can be inserted through spring termination externally for students study 3 Sockets are provided to insert externally a SCR One External Transformer provided 230V Input O P 24 0 24V AC 1Amp Housed in a sleek box Applications 1 Study of UJT Relaxation Oscillator 2 Study of ON Delay Timer 3 AC Regulator using SCR 2 DIGITAL MEASUREMENT OF PHASE ANGLE PEC14M19 Measurement of phase different between 2 sine waveform Resistor Capacitor RC circuit to shift one waveform up to 90 to stimulate phase difference One 3 Digit display to displ
39. 16M1 A VPET 202 VPET 216 VPET 202A PEC16M1G 2 IGBT MOSFET BASED LOW VOLTAGE APPLICATION TRAINERS Single phase MOSFET Module Single phase IGBT Module Single phase PWM Inverter control module 1 PWM Inverter control module 2 Chopper control circuitry module Three phase MOSFET Power module Three phase IGBT power Module Three phase PWM Inverter control module IGBT based chopper circuit 10 Two phase IGBT Based chopper 11 DC Motor control using H Bridge oO WIDAR WN PEC16M2 PEC16M3 PEC16M4 1 PEC16M4 2 PEC16M5 PEC16M2 3 PEC16M3 3 PEC14M4 30 PEC16M3 M5 PEC16M3A PEC16M3C 3 IGBT MOSFET BASED HIGH VOLTAGE APPLICATION TRAINERS 1 Single phase IGBT based PWM Inverter single phase MOSFET based PWM Inverter 3 Single phase input Three phase output IGBT based PWM Inverter amp V F Control Trainer PECI6HV1 1 PECI6HVI1A PEC16HV2 4 5 6 7 8 9 10 l 2 fe 8 9 10 11 12 13 et oe ae 3 phase input 3 phase output IGBT based PWM inverter and V F controller Single phase input IGBT based chopper Trainer Single phase input IGBT based Four Quadrant Chopper 3 phase input IGBT based four quadrant chopper S500VA on line off line UPS Trainer Module DSP based 500VA UPS Trainer IGBT Based Three phase PWM inverter IGBT MOSFET BASED AC DC DRIVES Speed control of single phase induction motor using IGBT inverter V F control Speed control of
40. 5 It consists of six number of isolated triggering pulse to trigger six SCR TCA785 IC used for phase angle variation in all three phase outputs One number of three phase 230 9v step down transformer provided for supply synchronization One number of potentiometer provided for phase angle or firing angle variation 180 0 Degree Carrier logic implemented in the pulses for SCR self starting Pulse transformer provided for scr pulse isolation 440v ac input t l5vde for control circuit Necessary test points provided for wave form measurement All components are mounted in the pcb fixed with nice cabinets Facility provided for external control 0 5vdc 12 SCR TRIGGERING CIRCUIT TRAINER PEC14M12E Kaka il rah KH i 2 pl t This setup consists of the following basic firing circuits to trigger SCR a R RC Triggering circuits b Basic DC Triggering circuit c UJT Triggering circuit d Micro controller based triggering circuit a R RC Triggering circuit One no of resistor and one no of capacitor forms R RC firing circuit Potentiometer used for firing angle variation Output terminated by connectors Necessary test points provided b Basic DC Triggering circuit Variable DC power supply with protection One potentiometer used to vary the DC voltage as well as the firing angle Necessary test points provided c UJT Triggering Circuit One no of 2N2646 UJT use
41. ANT CONVERTER TRAINER VPET 315 Series loaded series resonant converter with zero current switching MOSFET used as a Power device 24V DC input for power circuit 5 FLY BACK CONVERTER VPET 316 One no of MOSFET used as power switch 63 TL494 PWM controller used Tor MOSFET PWM generation One no of potentiometer used for output voltage adjustment One no of Diode bridge converter and filter capacitor for converting input AC to filtered DC for MOSFET power circuit input One no of ferrite core Transformer provided for Isolation Input 25V O P ISVDC 1Amp 50Hz Capacitor provided for output filtering One no of opto IC provided for PWM isolation One no of IR2110 Driver IC used for MOSFET gate driving Output voltage feedback circuit provided for closed loop operation BOOST CHOPPER PEC16M10 Consists of MOSFET power circuit and firing circuit TL494 PWM controller IC used for PWM generation One potentiometer used to vary the frequency of PWM 2 5 5KHz One potentiometer used to generate the duty cycle ratio of PWM 10 80 67137 high speed opto used for PWM isolation IR2110 2112 driver IC used for gate pulse drive IRF840 MOSFET L C forms boost chopper power circuit 15V DC 1Amp provided for power circuit input One no toggle switch used for ON OFF 15V DC Fuse provided at load side to avoid over current One no
42. CB for input ON OFF over current SPECIFICATION Input voltage 230V AC 50Hz Output voltage Three phase 0 240V AC variable voltage each phase 10 50Hz variable frequency each phase Output rating 10Amp each phase Motor RL can be used a load open closed loop possible optional 5 DC MOTOR CONTROL USING IGBT CHOPPER PEC16HV3 S One no IGBT forms single quadrant chopper for armature control open closed loop operation One no IGBT forms single quadrant chopper for field control TL494 Based PWM generation for both armature amp field circuit One potentiometer used to vary the duty cycle ratio of PWM armature One potentiometer used to vary the duty cycle ratio of PWM field High speed opto coupler used for pule isolation TR2110 IR2130 Driver IC used for IGBT gate drive Two no hall effect current sensor for field armature current measurement and protection Output over current short circuit protection with LED indication Diode bridge converter and filter capacitor for input DC voltage of IGBT chopper One voltmeter indicate DC rail voltage MCB for input ON OFF over current SPECIFICATIONS Input 230V AC 50Hz Output Armature circuit O 200V DC variable SAmp suitable 1HP motor Field circuit 90 220V DC 1 Amp 6 IGBT BASED FOUR QUADRANT CHOPPER PEC16HV3 Four no IGBT forms H bridge four quadrant unipolar chop
43. ERIMENTS 1 Open loop speed control of AC servo motor 2 Closed loop speed control of AC servo motor 3 Transfer function of AC servo motor 14 TRANSFER FUNCTION OF AC SERVO MOTOR VPET 302 This setup consists of i 1OOW Two phase AC servo motor setup ii Variable AC voltage source i 100W Two Phase AC servo motor setup Main winding voltage 230V AC Control winding voltage 0 230V AC 90 phase shift Optical speed measurement sensor for speed Belt type mechanical loading arrangement Speed 0 1500 RPM Power 100W ii Variable AC voltage source One number of 1 1 Amp Auto transformer provided to vary 0 230V AC for control unit One number of Phase shift transformer provided for 90 Phase shifting of main wing voltage Fuse provided for CW over current protection Illuminated power ON OFF switch provided for CW amp MW voltage input One No of digital ammeter provided for control winding current measurement One No of Digital voltmeter provided for control winding voltage measurement One No of MC Based digital speed indicator for motor speed measurement 3 Input all are mounted on a nice cabinet One no of Experimental manual List of Experiments Measurement of motor transfer function Speed control of AC servo motor 15 TRANSFER FUNCTION OF DC SERVO MOTOR VPET 300A This setup consists of a 100W DC Separately excited DC servo Moto
44. Inverter High Voltage Three phase Parallel Inverter Single Phase Series Inverter High Voltage Single Phase Cyclo Convertor High Voltage Single Phase Mc Murray Bed ford full bridge Inverter Three Phase Mc Murray Bed ford full bridge Inverter Three Phase Cyclo convertor Three phase Diode characteristics trainer SCR BASED AC DC DRIVES Speed control of DC Shunt motor using Single phase fully controlled converter Speed control V F control of Single phase AC Induction motor Speed control V F control of Three phase AC Induction motor Speed control of DC shunt motor using Three phase Fully controlled converter Armature and field control of DC shunt motor Closed loop speed control of PMDC Motor using SCR converter Speed control of DC shunt motor using SCR dual converter Thyristor chopper for DC motor drive Speed control of single phase Induction motor using cyclo converter Speed control of Three phase slip ring induction motor using Static Kramer drive DC Series motor controller using Jones Chopper AC Servo Motor position control trainer Speed control of Two phase AC Servo motor Transfer function of AC Servo Motor Transfer function of DC Servo Motor Transfer function of DC Motor amp DC Generator trainer Ward Leonard speed control system Transfer function PEC14M14CH 1 PEC14M14CY PEC14M14 INV PEC14M6 PEC14M7 PEC14M20 PEC14M21 PEC14M12A PEC14M12C PEC14HV4 PEC14HV5 PEC
45. N OFF 24VDC supply Snubber circuit provided for all power devices Low voltage isolation transformer provided for power circuit input Input 230V AC 50HZ Output 24 0 24V AC 3AMP The following experiments can be conducted using external firing module l Line commutated converter regulator applications 2 Inverter applications 3 DC chopper applications 2 L C MODULE PEC14MSA Inductance 120 H 4 Amp Air core inductor with six tappings Each tapping is percentage of 120mH 0 10 20 30 50 75 90 100 Combination of commutation capacitors Used for various commutation circuits in chopper circuit Housed in a box with sockets termination for all inductors and capacitors tappings SCR MODULE VPET 106A It consist of one number of SCR metal package with heatsink is provided SCR rating is 1200v SOAmps SCR with heatsink is fixed on a open wooden box with G A K terminals are brought out by banana socket RC snubber circuit and fuse are provided TRIAC Module VPET 106C It consist of one number of TRIAC metal package with heatsink is provided TRIAC with heatsink is fixed on a open wooden box with G MT1 MT2 terminals are brought out by banana socket RC snubber circuit and fuse are provided 10 5 DIODE Module VPET 106D It consist of one number of diode metal package with heatsink is provided Diode rating is
46. ONTROLLER USING SCR INVERTER PECI4HVSC This trainer is designed to drive the three phase AC induction motor using SCR based V F controller open closed loop SCR based three phase converter and inverter forms V F controller Variable voltage achieved by controlling the firing angle of SCR converter Variable frequency achieved by controlling the firing pulse frequency of SCR Mc Murray inverter SCR CONVERTER AND FIRING CIRCUIT Op amp Based linear firing circuit gives 0 180 d firing angle variation One no potentiometer used to vary the firing angle adjustment All six pulses isolated by pulse transformer and terminated in the front panel Six No s TYN1225 SCR forms single phase fully controlled converter with LC filter gives 600V DC to SCR inverter MCB and fuse DC side provided for over current protection DC voltmeter provided for DC rail voltage measurement SCR MC MURRAY INVERTER AND FIRING CIRCUIT IC Based three phase firing circuit with variable frequency 10 50 Hz 0 5V DC adjust the firing angle frequency Six No s Firing pulse with pulse transformer isolation terminated in the front panel Six No s TYN612 SCR and six No s diode forms power circuit six No s capacitor and three No s center tapped inductor for c Digital PID controller for closed loop operation d 1 hp 440vdc shunt motor set up a Scr three phase fully controlled converter for
47. P dc shunt generator act as load with 3 digital speed indicator Dc motor spec Power Armature voltage Field voltage Speed hp 75kw shunt type 440vdc 2amp 220vdc 0 3amp 1500 rpm Double side shaft extension Make De generator spec Power Armature voltage Field voltage Speed benn Lhp 6kw shunt type 180vdc 2 7amp 220vdc 0 3amp 1500 rpm Double side shaft extension Make benn Both motor and generator are coupled with base plate 6 440 DC MOTOR EDDY CURRENT LOAD SET UP PEC HV ACC3F This set up consists of one number of 1 de shunt motor coupled with 2 eddy current load set up with 3 digital speed and torque indicator Dc motor spec Power Armature voltage Field voltage Speed Lhp 75kw 44vdc 2amp 220vdc 0 3amp 1500 rpm Double side shaft extension Make benn Eddy current load set up 1 hp rating 0 80v lamp current rating 1500 rpm speed Electronic dc voltage controller provided for torque variation Torque sensor with torque indicator Speed sensor with speed indicator Both motor and eddy set up coupled with base plate 7 1 HP PMDC MOTOR LOAD SET UP PEC HV ACC3J This set up consists of one number of 1 pmdc motor coupled with 2 mechanical spring balance load set up with 3 digital speed indicator Pmdc motor spec Power Lhp 75kw pmdc motor Armature voltage 180vdc S5amp Speed 1500 rpm Double side shaft extension Make pranshu 8 1 HP PM
48. R CONVERTER PEC14M12B Consists of UJT firing circuit and SCR power circuit and load Line synchronized UJT firing circuit Line synchronization achieved by 230 9V step down transformer Built in 24V AC 1AMP for UJT firing circuit input One no potentiometer used to vary the firing angle 180 0 Two No 1 1 pulse transformer provided for gate pulse isolation All four gate pulses are terminated in the PCB with suitable connector Four No TYN612 SCR with snubber circuit for power circuit All SCR A K G terminals are terminated individually for external configuration 230V 24V 2AMP transformer provided for power circuit input voltage One no toggle switch to ON OFF 24V AC One no fixed resistor one no fixed inductor provided for load SUGGESTED EXPERIMENTS 1 Study of UJT firing circuit 2 Testing of single phase fully controlled converter using UJT firing 3 Testing of single phase half wave controlled converter 4 Testing of single phase AC regulator using UJT firing 15 CONTROLLED HWR AND FWR USING RC FIRING PEC14M12C Two separate sections are provided a Half wave rectifier b Full Wave rectifier a Half Wave rectifier One No of SCR rated at 600V 12A is provided R C Based firing Lamp load is provided One potentiometer is used to vary the firing angle of SCR 230V 24V operation b Full Wave Rectifier One no SCR rated at 600
49. RING PULSE INTERFACE CHORD PEC18MP1 One no line synchronized ZCD generator 230V 9V step down transformer used for line synchronization One no 26 pin header to interface microprocessor kit Two No s pulse amplifier with pulse isolation circuits Two Nos 1 1 pulse transformer provided for gate pulse isolation All four pulses terminated in the PCB for SCR interface with Four No s TYN612 SCR with snubber circuit provided for power circuit All A K G terminals are terminated for external power circuit configuration One no 230V 24V AC 2Amp provided for SCR power circuit input One no fixed resistor lamp used as a load SUGGESTED EXPERIMENTS 1 Single phase half fully controlled converter with R amp L load 2 Single phase AC regulator with R amp L load 9 MICROPROCESSOR BASED THREE PHASE SCR TRIGGERING CIRCUIT TRAINER PECI8MP2 This trainer consists of 1 8085 microprocessor kit 2 SCR firing pulse interface chord with SCR device module PECI8MP2 MICROPROCESSOR TRAINER 8085 Microprocessor Micro 85ebII 8 KB RAM 8KB EPROM One 8255 port to provide 24 TTL I O lines 21 Keys multifunction key board with double short characters for long life 6 Digit 7 segment display SCR FIRING PULSE INTERFACE CHORD PEC18MP2 Three No s line synchronized ZCD generator 230V 9V Three phase step down transformer used for line synchroni
50. T RECOVERY DIODE CHARACTERISTICS STUDY MODULE VPET 304 This module consists of oscillator circuit for switching pulse generation One BJT driver One BJT for power switching One Fast Recovery diode One slow regulated diode module rating 700V 1A One 24V regulated DC voltage for power switching One mains ON OFF switch for control circuit One min max switch for frequency selection Test points provided to test the waveform mounted on a front panel Schematic diagram is screen printed in the front panel 6 AC PHASE CONTROL USING SCR TRIAC amp DIAC PEC14M22 It consists of UJT firing circuit amp SCR AC regulator DIAC firing circuit with TRIAC AC regulator Ujt Firing Circuit with Scr Ac Regulator Line synchronized UJT triggering circuit line synchronization achieved by 230V 9V step down transformer Built in 24V AC for firing circuit input One No s Toggle switch to ON OFF 24V AC One no Potentiometer used to vary the firing angle 10 170 degree 1 1 1 Pulse transformer used for gate pulse isolation Pulse outputs are terminated in the PCB for external connection Two No s TYN612 SCR connected in antiparallel forms SCR AC regulator with termination Diac Firing Circuit with Triac Ac Regulator One no Potentiometer and different values of capacitor and one no DIAC forms DIAC firing circuit Two Nos Toggle switch to select different
51. Three phase induction motor using IGBT inverter V F control Speed Control of Three phase induction motor using IGBT inverter Speed Control of DC shunt motor using IGBT using single Quadrant Chopper Speed Control of DC shunt motor using IGBT using Four Quadrant Chopper Single phase input Speed control of DC Shunt motor using IGBT using Four Quadrant chopper Three phase input Speed control of Slip Ring Induction motor using IGBT chopper DC Position control system DSP Based DC Motor position control Amplidyne characteristics trainer Speed control and Electronic braking of DC shunt motor Electrical braking of three phase induction motor Synchro transmitter and receiver trainer DC DC CONVERTER SMPS TRAINER Single amp Multiple output SMPS Trainer Buck boost chopper Push pull inverter Resonant converter trainer Fly back converter Boost Chopper Forward Fly back Buck Boost amp Buck boost converter trainer Computer SMPS Trainer PECI6HV5 PEC16HV3 S PEC16HV3 PEC16HV7 PEC16HV4 PECI6HVDS UPS PECI6HV2A PECI6HV1 PEC16HV2 PEC16HV5 PEC16HV3 S PEC16HV3 PEC16HV7 PEC14HV10 A PEC 01 VPET 107 VPET 403 VPET 404 VPET 405 PEC 03 VSMPS 02 VPET 350 PEC16M11 VPET 315 VPET 316 PEC16M10 VPET 317 VSMPS 04 PART Hl OTHER PRODUCTS 1 POWER ELECTRONICS TRAINERS FOR POLYTECHNICS at Se ee J 10 11 12 13 14 15 PART Single phase h
52. V 12A is provided 4 Nos of Diode is used R C Based firing One potentiometer is used to vary the firing angle of SCR 230V 24V operation 4 HIGH VOLTAGE SCR APPLICATION TRAINER 1 SINGLE PHASE HALF amp FULLY CONTROLLED BRIDGE CONVERTER PEC14HV4 Specially designed for high voltage operation It consists of firing module SCR power circuit and high voltage accessories optional 1 FIRING MODULE Line synchronized op amp based linear triggering circuit One no potentiometer used to vary the triggering angle 0 180 d Line synchronization achieved by step down transformer Carrier logic implemented for SCR self starting One no Toggle switch with debounce logic for pulse ON OFF 1 1 Pulse transformer used for gate pulse isolation Pulse output terminated in the front panel for device module interface 2 SCR POWER CIRCUIT Power circuit consists of two no SCR TNY1225 rating at 1200V 25AMP two No s power diode rating at 1200V SOAMP All terminals of diode and SCRs terminated on the front panel for external connection One no MCB provided for mains Fuse provided in input side 3 SPECIFICATION Input 0 230V AC 50Hz Output 0 200V DC SAMP 10AMP optional 0 230V AC 5AMP 10AMP optional 4 SUGGESTED EXPERIMENTS 1 Single phase half and fully controlled converter with R and RL load 2 Single phase AC regulator
53. alf controlled converter Single phase fully controlled converter Three phase half controlled converter Three phase fully controlled converter SCR TRIAC AC Phase Control trainer Three phase AC Voltage controller trainer DC Chopper Trainer Line Synchronized UJT Triggering Module Lamp Control using DIAC amp TRIAC Basic Series inverter trainer Single phase cyclo converter module DC Motor speed control trainer Speed control circuit for Universal Motor Closed loop control of FHP AC Induction motor DC Motor speed control trainer Closed loop IV POWER ELECTRONICS ACCESSORIES 1 Low Voltage Accessories a b C Resistive Load Inductive Load PMDC Motor 12V 24V PMDC 2 High Voltage Accessories a b C Loading Rheostat Single phase Three phase Variable Inductive Load Motor Load OTHER PRODUCTS mog Commercial AC DC Drives Eddy current dynamiter loading Eddy current drive CRO VPET 204 VPET 205 VPET 215 VPET 215A VPET 203 VPET 215B VPET 208 VPET 200 VPET 201 VPET 207 VPET 209 VPET 211 VPET 212 VPET 213 VPET 214 PEC LVACC PEC LVACC2 PEC LVACC3 PEC HVACC PEC HVACC2 PEC HVACC3 POWER ELECTRONICS TRAINERS PART I SCR RELATED PRODUCTS 1 IGBT MOSFET SCR TRIAC DIAC CHARACTERISTICS STUDY TRAINER PEC16M1 A Basic static characteristics study trainer LM723 based variable DC power supply 0 30V for SCR Vak LM723 bas
54. als 6 Motor Control PWM Unit with Programmable Dead Band 10 Bit 9 Channel ADC with 500 KSPS 30 General Purpose I O Lines 5 GP Timers Quadrature Encoder Interface amp 4 Input Capture Pins Memory On Chip 48K Flash Program Memory 2K RAM for Data Memory 1K EEPROM Memory Additional Features On Chip serial port and the serial port lines are isolated ADC Input Lines are protected and Terminated Bead Inductances are provided at VCC amp GND for EMI Rejection PWM Output Lines are Terminated at a separate FRC Connector 16x2 Alphanumeric LCD Display and 3 keys Keypad Switch Mode Power Supply Input 180V 230V AC 50 60 Hz Output 5V 3 0A amp 12V 500 mA Protection Over Current amp Short circuit Protection Provision to select different type of PWM control technique SPWM Multiple PWM Provision to select PWM output for UPS 3 AC Drive applications b 36 IGBT BASED POWER MODULE Power Module is designed for Motor control Applications and UPS Application IGBT amp DIODE used as power device Input 1 Phase 50 Hz AC Output i 3d AC V F control for 3 dh drive applications ii 36 AC Output for UPS Applications Voltage control 1200V 25A 3 Phase IGBT Inverter Bridge Additional Features 1200V 25A converter Bridge for AC DC power conversion 1 No of Hall Effect current sensors to sense the output current of the Inverter Bridge All the PWM signal
55. analog voltmeter used to indicate input side DC volt and output boost voltage One no toggle switch to select the voltmeter input voltage 230V 50Hz AC input 15V DC for control circuit Necessary test points to study the control circuits One no illuminated rocker switch for ON OFF mains 230V AC EXPERIMENTS 1 Study of boost chopper performance with frequency and duty cycle ratio variation 7 FORWARD FLYBACK BUCK BOOST amp BUCK BOOST CONVERTER TRAINER VPET 317 This trainer consists of the following sections 1 Buck converter 2 Boost converter 3 Buck Boost converter 4 Forward converter 5 Fly Back converter 1 MOSFET BASED BUCK CONVERTER One number of powers MOSFET IRF840 used as power switch with suitable heat sink TL494 IC based PWM generator One number of high speed Opto isolator provided for PWM isolation Driver IC IR2110 used to drive power switch High frequency transformer provided for isolation Power circuit I P voltage 15V DC Output voltage 0 5 VDC 1 amp 230V AC input 15 DC for control circuit 64 One number of fuse provided for protection Voltage feed back from the output for closed loop operation One no of Potentiometer used for PWM variation L amp C provided for filters 2 MOSFET BASED BOOST CONVERTER One number of powers MOSFET IRF840 used as power switch with suitable heat sink TL494 IC based PWM gene
56. ariety of Experiments can be conducted using this Trainer system The DC motor position control trainer consists of 1 DSP based Controller 2 Converter 3 Motor Setup DSP BASED CONTROLLER One powerful DSP controller with software 16x2 Alphanumeric display provided to display the speed position and velocity 6x2 matrix keyboard provided to feed the input CONVERTER 4 Quadrant MOSFET Chopper circuit to drive the motor Dual MOSFET driver with 4 MOSFET and bridge rectifier with filtering circuit also provided MOTOR SETUP 12V 1 5A PMDC Motor with gear 30 1 ratio Quadrature optical encoder of 512 ppr in the without gear side One opto coupler provided for zero sensing 59 This setup fixed in a metal base plate OTHER FEATURES Built in Power supply Cables provided to link the mechanical setup and controller unit EXPERIMENTS Speed control of DC Servo motor Position control of DC servo motor Measure the velocity 10 AMPLIDYNE CHARACTERISTICS TRAINER VPET 403 11 SPEED CONTROL AND ELECTRONICS BRAKING OF DC SHUNT MOTOR VPET 404 This trainer 1s designed to study speed control Forward Reverse and various types of Electrical braking of DC shunt motor 1hp Armature and Field control of DC Shunt Motor a DC Shunt Motor S HP Armature voltage 180V Field Voltage 220V Shunt type 1500 RPM Speed display facility b MOSFET Controller
57. armature voltage variation Three number of TCA785 phase control ic provided for three phase scr firing pulse generation One number of potentiometer provided for firing angle variation 180 Odegree Three phase step down transformer provided for supply synchronization Six number of Pulse transformer provided for scr pulse isolation One number of Spdt switch provided for pulse on off commutation Separate control circuits for adjusting V F ratio Provision to control the V F ratio in external 0 50V DC closed loop Input 440V AC 3 phase Output 0 415V variable AC and 10 50 Hz variable frequency Current SAmp All six pulses are terminated on the front panel for power circuit connection Test points provided for wave form measurement Connector provided for external 0 5v control for closed loop operation One number of spdt switch provided for internal external mode selection Six number of tyn1225 scr with suitable snubber and heat sink provided for Power circuit All six scr forms three phase fully controlled converter power circuit Power circuit input and outputs are terminated by banana connector on the front panel Three phase mcb provided for input on off With indicator Input three phase 415v ac Output 0 S50vdc 5amp 4 SPEED CONTROL OF DC SHUNT MOTOR USING THREE PHASE FULLY CONTROLLED CONVERTER VPET 301 b SCR single phase half con
58. ay 0 90 phase angle Input signal sources 3I POWER SUPPLY Input 230V 10 50Hz single phase AC 15V DC 0 5A regulated output for the trigger circuits 3 AC SOLID STATE RELAY USING OPTO COUPLER ISOLATION PEC14M10 555 IC used to generate triggering pulse to SCR TRIAC 6N137 opto used to isolate the gate signal SCR based AC regulator triac based AC regulator TYN612 SCR BTAI2 TRIAC used as a power device Connector provided SV I5VDC input Lamp used as a load Input 230VAC Output 230V AC SAMP Control signal 5V 15VDC external 4 SCR RING COUNTER PEC14M11 Five No s SCR used as a power device Five No s lamp used as a load to view ring counter operation Auto manual mode of operation One no SPDT switch to select manual auto mode of operation 555 IC based as table multivibrator for auto mode operation One no push to on switch provided for mono stable input trigger One no reset switch to re start the operation Transistor based pulse amplifier for pulse amplification One no bridge rectifier converters 230V AC to DC with filter circuits for SCR power circuit input Five No s AC capacitor used for SCR commutation 230V AC input 15V DV for control circuit SUGGESTED EXPERIMENTS 1 Testing of SCR ring counter in auto mode with different frequency 2 Testing of SCR ring counter in manual mode 5 FAS
59. ble side shaft extension Make benn 11 1 HP DC SERIES MOTOR GENERATOR LOAD SET UP PEC HV ACC3H This set up consists of one number of 1 de series motor coupled with 2 1 HP dc shunt generator act as load with 3 digital speed indicator Dc motor spec Power Lhp 75kw series type Armature voltage 220vdc 4amp Speed 1500 rpm Double side shaft extension Make benn De generator spec Power Lhp 6kw shunt type Armature voltage 180vdc 2 7amp Field voltage 220vdc 0 3amp Speed 1500 rpm Double side shaft extension Make benn Both motor and generator are coupled with base plate 12 1 HP DC SERIES MOTOR EDDY CURRENT LOAD SET UP PEC HV ACC3D This set up consists of one number of 1 dc series motor coupled with 2 eddy current load set up with 3 digital speed and torque indicator Dc motor spec Power Lhp 75kw Armature voltage 220vdc 4amps Speed 1500 rpm Double side shaft extension Make benn Eddy current load set up 1 hp rating 0 80v lamp current rating 1500 rpm speed Electronic dc voltage controller provided for torque variation Torque sensor with torque indicator Speed sensor with speed indicator Both motor and eddy set up coupled with base plate 13 3 HP DC MOTOR LOAD SET UP PEC HV ACC3M This set up consists of one number of 1 dc shunt motor coupled with 2 mechanical spring balance load set up with 3 digital speed indicator He Dc motor spec Power 3hp 2 2kw Armature
60. comparator circuit It compares carrier amp control voltage One no potentiometer used to vary the control voltage so as to vary the duty cycle ratio of PWM 5 to 95 IC Based control logic circuits for generation of PWM for different type of chopper One no rotary switch to select PWM for different types of chopper circuits single two four quadrant chopper IGBT POWER CIRCUIT Four no IRGBC 20S IGBT forms H Bridge circuit Necessary IGBT terminations for single quadrant chopper two quadrant chopper LM723 Based 24V DC power supply with O C S C protection One no toggle switch fuse protection and LED indication for 24V DC supply One no fixed resistive and inductive load 5V DC back EMF provided All four PWM inputs are terminated on the front panel for device module interface 230V AC input 15V 15V DC for control circuits 10 TWO PHASE IGBT BASED CHOPPER PEC16M34A This trainer consists of 1 IGBT based power circuit 11 Chopper PWM control circuit IGBT Power circuit Two nos of 1MBH 60D 090A IGBT used as power switch mounted with suitable heat sink with necessary snubber circuit Two nos of high frequency inductor used for power circuit High speed opto used for IGBT PWM isolation IR2110 IC used as IGBT driver 24V DC 2A Provided for power circuit input PWM Control Circuit IC Digital controller based PWM generation 46 11 Provis
61. d for firing pulse generation Variable R amp C provided for triggering circuits Potentiometer provided for firing angle variation Pulse transformer provided for pulse isolation 4 Nos of triggering pulses terminated by suitable connectors Necessary test points d Microcontroller based Firing circuit dsPIC30F4011 based firing pulse generation One no of pulse output with firing angle variation 0 180 One no of digital key provided for firing angle variation e SCR Module One no of SCR with snubber and heat sink provided Fixed R Load 24V 1A AC Source provided for power circuit input B TYPES OF POWER MODULE L SCR TRIAC DIAC DEVICE MODULE PEC14M15 bt is a common device module by interface with external firing module it can be used for different applications Four Nos TYN1225 SCR with fuse protection A K G terminals of all SCR terminated individually for external connection Four No s diode with fuse protection A K of all diode terminals terminated individually for external connection One no BTA12 TRIAC with fuse protection MT1 MT2 G terminals are terminated individually for external connection One no DIAC with fuse protection MT1 MT2 terminals are terminated for external connection 24VDC 2A unregulated power supply for device DC operation One no fuse provided for DC power supply over current protection One no toggle switch for O
62. e INPUT CIRCUITRY One Potentiometer provided to vary the AC Output voltage One potentiometer provided to vary the frequency of the output voltage Range 10Hz 50Hz One SPDT switch provided to release gate pulses 5 Test points are provided for 1 Carrier frequency 11 PWM 1 PWM 2 and PWM 3 pulses 111 DC link current iv load current Optional One Rocker switch provided to power the equipments V F Controller Separate circuits provided to V F control One Potentiometer provided to vary the V F Ratio 61 OTHER FEATURES One no of push button for DC current braking One potentiometer used to set different of DC braking 10 50 POWER SUPPLY Input 230V 10 50Hz Single phase AC ACCESSORIES 1 1 hp three phase AC induction motor mechanical loading PECI4HVACC13 Make Siemens Fixed on a mechanical frame One optical encoder is provided for the speed measurement The output of optical encoder is signal conditioned amp calibrated to indicate the speed of the DC motor amp display on a 3 digit display 13 SYNCHRO TRANSMITTER AND RECEIVER PEC 03 Two number of torque synchro used as a transmitter and receiver Rotor Voltage 50V AC 50Hz Induced Stator Voltage 22V AC 50Hz three phase The input and output angular displacement is indicated in a round dial marked with angular position 0 360 Rotor R1 R2 and Stator S1 S2 S3 terminals of t
63. e a LOW VOLTAGE SCR APPLICATION TRAINER Single Phase AC Voltage Controller Kit Single Phase AC Voltage Controller using TRIAC Single phase AC Voltage controller using SCR and TRIAC Single Phase Half Controlled Bridge Convertor with R RL Load Single Phase Fully Controlled Bridge Convertor with R RL Load Forced Commutation Circuits Class A B C D amp E Commutation Chopper Circuit Module oe a a PEC16M1 A PEC16M1B PEC16M1C PEC16M1E VPET 216 VPET 217 PEC16M1F PEC14M12 PEC14M13 PEC14M14 PEC14M14 PT PEC14M16 PEC14M17 PEC14M18 PECI8MP1 PEC18MP2 PEC14M30 PEC14M3 1 PEC14M12E PEC14M15 PEC14MS5A VPET 106A VPET 106C VPET 106D PECI4M14AC PECI4M14AC 1 PEC14M14AC 2 PEC14M14HW PEC14M14FW PEC14M14CH fe 8 H 10 11 12 13 UJT Firing Circuit for SCR Converter 15 14 Ge a E a 9 10 E 12 l SES ZS E SE Ee 10 SCR based DC Chopper circuit Single Phase Cyclo Convertor with R RL Loads Single Phase SCR Full Bridge Inverter SCR Series Inverter SCR Phase Parallel Inverter Morgan Chopper Circuit Trainer Jones Chopper Trainer Module Controlled HWR and FWR using RC firing HIGH VOLTAGE SCR APPLICATION TRAINER Single Phase Half amp Fully controlled bridge converter Three Phase Half amp Fully Controlled bridge converter Single Phase Dual converter Thyristor chopper for SCR DC Drive Single Phase Parallel
64. ed variable DC power supply 0 12V for gate voltage of all devices Separate section for SCR TRIAC characteristics Separate section for IGBT MOSFET characteristics Two No s fixed load resistor for all devices Four No s potentiometer to vary all voltages LED indication for all power supply Three No s digital multimeter for measurement of device parameters 230V AC input with Power ON OFF switch SUGGESTED EXPERIMENTS 1 Study of VI characteristics of SCR Study of VI characteristics of TRIAC 3 Study of Transfer characteristics of MOSFET 4 Study of Transfer characteristics of IGBT 5 Study of Dynamic characteristics of MOSFET 6 Study of Dynamic characteristics of IGBT 2 SCR VI CHARACTERISTICS STUDY TRAINER PECI6M1B Basic VI characteristics study trainer Consists of one no TYN612 SCR with heat sink LM723 based 20V DC power supply for gate voltage One no potentiometer used to vary the gate current 0 30V DC variable power supply for anode cathode voltage variation One no potentiometer used to vary the Vak One no high wattage fixed load resistor One no toggle switch to ON OFF gate voltage Two no DC ammeter voltmeter multimeter provided to measure Ig amp Vak Ia 230V AC input Power ON OFF switch All components are mounted on a screen printed PCB fixed on a nice wooden cabinets SUGGESTED EXPERIMENTS l Static anode
65. ency 4K Hz Debounce logic circuit implemented for SCR gate pulse ON OFF One No toggle switch for gate pulse ON OFF 230V 50Hz AC input fuse provided for over load protection One No rocker switch with LED indication for power ON OFF Provision to control the firing angle through external 0 to 5V DC One No op amp based analog PI control circuit for closed loop operation Provision to connect feed back signals to PI control circuit By external interface with SCR device module PECI4M15 the following experiments can be conducted l Single phase half controlled converter 2 Single phase fully controlled converter Consists of two no firing pulse to trigger auxiliary main SCR Two No s 1 1 pulse transformer used for gate pulse isolation One No s potentiometer used to vary the duty cycle ratio of PWM signal 10 90 Debounce logic circuit implemented for pulse ON OFF Two No s toggle switch for ON OFF auxiliary main SCR pulses Necessary test points for triggering circuit study Auxiliary and main SCR pulses are terminated on the front panel to interface with SCR device module PEC14M15 amp LC module 230V AC 50Hz AC input 15 15V DC for control circuit Illuminated rocker switch with fuse protection for mains ON OFF By external interface with device module PEC14M15 and L C module PEC14M5A the following experiments can be conducted 1 Au
66. ent SPECIFICATION Input voltage Output voltage 230V AC 50Hz 0 200V AC Variable voltage 10 50Hz Variable frequency Output rating 5Amp Motor RL load can be used as load open closed loop possible optional 2 SINGLE PHASE MOSFET BASED INVERTER PEC16HV14A Four no MOSFET forms H bridge single phase sine PWM inverter Sine triangle PWM generation for MOSFET Switching frequency 2 5KHz One potentiometer used to vary the reference sine wave frequency 10 50Hz One potentiometer used to vary the reference sine wave amplitude 0 10V High speed opto coupler used for gate PWM isolation TR2110 1IR2130 Driver IC used for MOSFET gate PWM drive Two no hall effect current sensor for output DC current measurement and protection optional LED indication for over current short circuit condition Diode bridge converter and filter capacitor for input ON OFF over current 47 SPECIFICATION Input voltage 230V AC 50Hz Output voltage 0 200V AC variable voltage 10 50Hz variable frequency Output rating 2Amp 3 IGBT BASED THREE PHASE INVERTER PEC16HV2 Six no IGBT Forms Bridge type three phase sine PWM inverter Sine triangle PWM generation with switching frequency 2 5KHz One potentiometer used to vary the reference sine wave R Y B frequency One potentiometer used to vary the reference sine wave R Y B amplitude H
67. er provided for isolation Power circuit I P voltage 15V DC Output voltage 0 5 VDC 1 amp 230V AC input 15 DC for control circuit One number of fuse provided for protection Voltage feed back from the output for closed loop operation MOSFET BASED FLY BACK CONVERTER One number of powers MOSFET IRF840 used as power switch with Suitable heat sink TL494 IC based PWM generator One number of high speed Opto isolator provided for PWM isolation Driver IC IR2110 used to drive power switch High frequency transformer provided for isolation Power circuit I P voltage 15V DC Output voltage 0 5 VDC 1 amp 230V AC input 15 DC for control circuit One number of fuse provided for protection 65 Voltage feed back from the output for closed loop operation All components are mounted on a nice cabinet with necessary test points amp terminals One no of Rheostat provided for load Necessary ammeters amp voltmeters provided 8 COMPUTER SMPS TRAINER PART IH OTHER PRODUCTS A POWER ELECTRONICS TRAINERS FOR POLYTECHNICS SINGLE PHASE HALF CONTROLLED CONVERTER VPET 204 Consists of scr firing circuit half controlled scr power circuit and R L load TCA 785 IC based firing pulse generation One number potentiometer provided for firing angle adjustment 0 180d 230 9v synchronization transformer provided for firing circuit Carrier logic implemen
68. eter 3 meters are provided to measure the various power devices current and voltage to find the static characteristics 2 IGBT MOSFET BASED LOW VOLTAGE APPLICATION TRAINERS 1 SINGLE PHASE MOSFET MODULE PEC16M2 Four no IRF840 MOSFET with heatsink and snubber circuit 6N137 High speed opto for gate PWM isolation TR2112 2110 Driver IC for gate PWM drive IC Based dead time logic circuit implemented to avoid pulse shoot through Built in 50 30V DC 2Amp for power circuit input Over current protection circuit implemented with LED indication All devices terminated individually for different configuration By suitable interface with external firing module PEC16M4 M5 optional it can be work as 1 Single quadrant chopper 2 Two quadrant chopper 3 Four quadrant chopper unipolar 4 Four quadrant chopper bipolar 5 Single phase SPWM inverter 6 Single phase single pulse inverter All four device gate pulse inputs are terminated on the front panel for external interface Microprocessor MC DSP 230V AC input 15V 15V DC for control circuits Optionally a hall effect current transducer provided for current measurement 2 SINGLE PHASE IGBT MODULE PEC16M3 Four no IRGBC 20S IGBT with heatsink and snubber circuit 6N137 high speed opto for gate PWM isolation TR2112 2110 Driver IC for gate PWM drive SC IC Based dead time logic for delay circui
69. ets and used as Armature voltage for the DC motor One Hall effect current transducer provided in the Armature line of the Motor to measure the Armature current and used for protection One Hall effect current transducer provided in the Field line of Motor to measure the Field current and used for protection Test points provided on the Front panel DC link Current Voltage Armature current Field current Output voltage Armature Voltage 220 to 220V DC Armature Current 7 5Amp Field Voltage 170 to 220 Volt DC Field Current 2 Amp Input Voltage 230V 10 AC Single Phase PROTECTIONS The protection circuit monitors 1 Field current 11 Armature current 11 DC link voltage amp iv DC link current and take appreciate protection like field supply failure Over Voltage Over Armature Current protection etc One Test point for Shut Down One LED to indicate Shut Down One Reset switch is provided to restart the operation One Control amp Power circuit for Regenerative Breaking INPUT CIRCUITRY One potentiometer to vary the field voltage One Potentiometer provided to vary the armature voltage One SPDT switch provided to ON OFF armature power 56 Test points are provided for 1 Carrier frequency 11 Armature control voltage 111 One pair of Armature PWM pulses iv Field control PWM pulse One Rocker switch provided to power the equipments MOTOR SETUP 1 h
70. f controlled converter with R and R L load SINGLE PHASE SCR FULLY CONTROLLED BRIDGE CONVERTER PEC14M14FW Consists of firing circuit SCR power circuit and load Line synchronized IC based linear firing circuit Line synchronization achieved by step down transformer Four no firing pulses to trigger four SCRs 1 1 1 Pulse transformer used for pulse isolation One No potentiometer used to vary the firing angle 180 0 Carrier logic implemented carrier frequency 4KHz One no toggle switch with debouncing logic for pulse ON OFF Provision to control the firing angle through external 0 5V Power circuit consists of four no SCR with fuse protection Anode Cathode Gate terminals are terminated in the front panel for user connection 24V AC LAMP provided for power circuit input with ON OFF switch One no fixed R L load provided 230V 50Hz AC input with ON OFF rocker switch fuse for over load SUGGESTED EXPERIMENTS l Single phase fully controlled converter with R and R L load 6 FORCED COMMUNICATION CIRCUITS CLASS A B C D amp E COMMUNICATION CHOPPER CIRCUIT MODULE Consists of firing circuit SCR power circuit and load IC based firing circuit to trigger two SCRs One no potentiometer used to vary the frequency of firing pulse One potentiometer used to vary the duty cycle ratio of PWM Two no toggle switch wit
71. h debounce logic for ON OFF pulses Pulse transformer used for gate pulse isolation Two No s SCR and one no diode provided with A K G terminals are terminated on front panel for external connection Two No s fixed R load Two No s capacitor and one no fixed inductor for commutation circuit Separate firing pulse section for line commutation circuit and external pulse commutation circuit 15V DC LAMP for SCR power circuit input and 9V AC for SCR line commutation circuit input Two no toggle switch for ON OFF DC and AC voltage 13 SUGGESTED EXPERIMENTS 1 Load commutation circuit class A Resonant pulse commutation circuit class B 3 Complementary commutation circuitry class C 4 Impulse auxiliary commutation circuit class D 5 External pulse commutation circuit class E 6 Line natural commutation circuit class F 7 SCR BASED DC CHOPPER CIRCUIT PEC14M14CH 1 Consists of firing circuit power circuit and load Firing circuit IC Based square wave generation Two Nos firing pulse to trigger auxiliary and main SCR One potentiometer used to vary the frequency of the firing pulse 100Hz 300Hz Approx One No s potentiometer used to vary duty cycle ratio 10 90 Two No s toggle switch to ON OFF SCR gate pulses Necessary test points to measure control circuit waveform in CRO Power circuit Two No s TYN612 SCR with heat
72. hase control IC used for pulse generator One no of potentiometer used to vary firing the firing angle 0 180 Pulse amplifier and pulse isolation provided 2 Nos of 1 1 pulse transformer used for pulse isolation Necessary test points and SCR input and output connectors are provided for easy studying and patching All are mounted on a wooden box Power circuit It consists of SCR power circuit for DC Motor Armature Diode rectifier for FIELD circuit Armature Circuit 4 Nos of SCR with heat sink form fully controlled converter 230V AC input One no of SPDT to ON OFF power circuit input voltage One no of fuse provided for output section All G K terminals brought out by special connectors Connector output terminated by banana socket for Motor Armature Field Circuit One no 1 diode bridge rectifier Package provided 230V AC Input for diode rectifier One no of ON OFF switch for AC Input Bridge output terminated by connector for motor field One no of LED Indicate field voltage status 13 SPEED CONTROL CIRCUIT FOR UNIVERSAL MOTOR VPET 212 One no of Phase control IC used for pulse generator One no of potentiometer used to vary firing the firing angle 0 180 Pulse amplifier and pulse isolation provided 1 No of 1 1 pulse transformer used for pulse isolation TRIAC used as power device 230V AC used for power circuit input Necessary test points a
73. ice wooden cabinets SUGGESTED EXPERIMENTS 1 Static VI characteristics of DIAC 5 TRANSIENT CHARACTERISTICS OF SCR AND MOSFET VPET 216 a Transient Characteristics of SCR One SCR TYN 612 with proper heat sink Turn ON transient OR turn off transient characteristics can be studied IC Based square wave generation for Vax and Vex One No of fixed load resistor b Transient Characteristics of MOSFET One IRF840 MOSFET with heat sink One no 15V 30V power supply Built in for Vps One no of 555 based square wave generation with transistor driver circuit One no of fixed load resistor c Power Supply 230V AC Input 15V DC for control circuit Power ON OFF switch with indication 6 SWITCHING CHARACTERISTICS OF SIT PEC16M1D The switching characteristics of the device SIT can be studied using this module Features Consists of SIT Power switching devices Built in power supply for the control circuitry and the power circuitry 15V 1A for control circuitry 15V 1A for power circuitry Allterminals of the devices are brought out to Banana sockets mounted at the front panel for easy wiring Mimic diagram of the block schematic of the control circuitry and switching devices is screen printed at the front panel The circuits Power supply etc are browsed in a sleek cabinet 7 CONSTRUCTION OF SCR USING TWO TRANSISTOR PECI6MF One No of NPN
74. ided for obtaining oscillographic waveform record of supply voltage supply current stator voltage stator current DC link voltage DC link current inverter feedback current and rotor current waveforms The above setup is able to measure the following parameters a Steady state Behaviour of Drive b Transient state Behaviour of Drive The Software has provision to record the following in the computer and graphical hard copy can be taken l No Load speed Vs firing angle characteristics 2 Torque speed characteristics at different firing angle 95 to 160 in step 10 or by user setting 3 Torque 2P U Vs DC link current 0 P U to 3 75 P U at firing angle 95 to 145 4 Full load supply current Vs slip characteristics at firing angle 95 to 145 Here supply current is computed as phasor sum of stator current and inverter current on A C side 5 Supply power factor Vs slip P U Characteristics at different firing angle 6 System efficiency Vs slip curves at different angle at full load Determination of Transfer function 19 DSP BASED STATIC KRAMMER DRIVE PEC16HV10C It consists of three major parts namely SCR 3 phase inverter DSP Based inverter firing circuit Slip ring induction motor setup with rotor converter circuit amp RL For DC filtering SCR 3 phase Inverter It consists of 6 Nos of SCRs rated at 1200V 50Amp with suitable heat sinks to form 3 phase fully controlled converte
75. igh speed opto coupler used for PWM isolation TR2110 1IR2130 Driver IC used for IGBT gate drive Three no hall effect current sensor for output DC current measurement and protection LED Indication for over current short circuit condition Diode bridge converter and filter capacitor for input DC voltage IGBT inverter One voltmeter indicate DC voltage MCB for input ON OFF over current SPECIFICATION Input voltage Output voltage 230V AC 50Hz Three phase 0 200V AC variable voltage each phase 0 50Hz variable frequency each phase Output rating 5Amp each phase Motor RL load can be used as load open closed loop possible optional 4 THREE PHASE INPUT IGBT BASED THREE PHASE INVERTER PECI6HVS5 Six no IGBT IPM forms H bridge three phase sine PWM inverter Sine triangle PWM generation for IGBT switching frequency 2 5HKz One potentiometer used to vary the reference sine wave R Y B frequency One potentiometer used to vary the reference sine wave R Y B amplitude High speed opto coupler used for pulse isolation Built in driver IC in PWM power circuit Three no hall effect sensor for output DC current measurement and protection LED indication for over current short circuit condition Three phase diode bridge converter and filter capacitor for input DC voltage for IGBT inverter power circuit One voltmeter indicate DC rail voltage M
76. ints and SCR input and output connectors are provided for easy studying and patching All are mounted on a wooden box Power Devices circuit Four nos of SCRs rated for 1200 volts VAK amp 25 Amps 1A One diode for free wheeling Each device is provided with RC Snubber for dv dt protection Necessary terminals are terminated on connectors 24volt AC 2Amp provided for low voltage operation In the low voltage operation the student can see the waveform using an Oscilloscope without any Isolation Transformer One no of fuse provided at output section for over current part One no of SPDT to ON OFF power circuit AC Input One no of Digital speed indicator indicate set actual speed of motor ANALOG PI CONTROLLER One analog PI Controller provided for closed loop operation LOAD 24V PMDC Motor Make Panasonic with output feedback facility 70 PART IV POWER ELECTRONICS ACCESSORIES A LOW VOLTAGE ACCESSORIES 1 RESISTIVE LOAD PEC LV ACCIAI 50 Ohm 4amp rating Variable type Single phase AC or DC input Tubular type 2 RESISTIVE LOAD PEC LV ACCI1B 220 Ohm 2amp rating Variable type Single phase Tubular type B INDUCTIVE LOAD PEC LV ACC2 120Mh 4Amp Rating Single phase inductive load With 0 15 30 45 60 75 90 120mH tapping Tron core type Banana connector provided for all inputs 71 C MOTOR LOAD PEC LV ACC3 L 12V PMDC MOTOR LOAD
77. ion to vary duty cycle ratio Provision to vary phase shift of two chopper PWMs SKHz Frequency operation Necessary test points provided to view waveform in CRO 230V AC Input 15 V DC for control circuit All are mounted in a nice cabinet DC MOTOR CONTROL USING H BRIDGE PEC 16M3C One no of IC H Bridge L 298 used for power circuit IC based PWM Generation with variable duty cycle ratio One Potentiometer used to vary duty cycle ratio 10 90 12V PMDC Motor used as load 230V AC I O 15V DC for control circuit All components are placed in a PCB fixed on a cabinet IGBT MOSFET BASED HIGH VOLTAGE APPLICATION TRAINERS SINGLE PHASE IGBT BASED PWM INVERTER PECI6HV1 1 Four no IGBT forms H bridge single phase sine PWM inverter Sine triangle PWM generation for IGBT Switching frequency 2 5KHz One potentiometer used to vary the reference sine wave frequency 10 50Hz One potentiometer used to vary the reference sine wave amplitude 0 10V High speed opto coupler used for gate PWM isolation TR2110 1IR2130 Driver IC used for IGBT gate PWM drive Two no hall effect current sensor for output DC current measurement and protection LED Indication for over current short circuit condition Diode bridge converter and filter capacitor for input DC voltage of IGBT inverter power circuit One voltmeter indicate DC rail voltage MCB for input ON OFF over curr
78. is trainer is designed to drive the 1 HP DC motor optional both open loop and closed loop Both armature control and field control facility provided It consists of SCR based fully controlled converter for armature voltage variation 0 200V DC variable 5Amp capacity One no SCR based fully controlled converter for field voltage adjustment 100 220V DC variable 1 AMP Two sets of op amp based linear triggering circuit for SCR voltage One no rotary switch to select open loop closed loop 1 and closed Loop II Two No s potentiometer used to vary armature amp field voltage Over current amp field failure protection provided MCB for input ON OFF Shut down status indicator and reset switch for protection circuit One no Hall effect current sensor for current feed back closed loop and protection One no digital speed indicator to indicate set speed and actual speed One no toggle switch to select the feedback circuitry Provision to control the motor speed through external 0 5V DC source 230V 50Hz AC input 15V 15V DC for control circuits SUGGESTED EXPERIMENTS 1 Open loop armature control of DC shunt motor 2 Closed loop armature control of DC shunt motor speed current feedback 3 Field control of DC shunt motor 2 SPEED CONTROL OF SINGLE PHASE INDUCTION MOTOR PECI4HVAC This trainer is designed to drive the single phase AC induction motor or u
79. lation Pulse output terminated in the PCB for user patching Power circuit consists of two No s SCR TYN612 center tapped inductor center tapped capacitor LM 723 Based 24V 2A DC power supply with LED indication One no toggle switch used to ON OFF 24V DC power supply Over load and short circuit protection of input DC 15 230V 50Hz AC input 15V DC 1 AMP for control circuit One no output PI filter to filter series inverter output voltage One no fuse provided for power supply protection necessary test points provided SUGGESTED EXPERIMENTS 1 Study of series inverter firing circuit 2 Testing of series inverter with R load with frequency variation 11 SCR PARALLEL INVERTER PEC14M7 Consists of SCR power circuit and firing circuit 4046 IC Based square wave generation with adjustable frequency One no potentiometer used to vary the frequency 50 100Hz 1 1 Pulse transformer used for gate pulse isolation Pulse output terminated in the PCB for user patching Power circuit consists of two No s SCR TNY612 inverter transformer with flay back winding One no Iron core inductor provided for power circuit One no AC capacitor commutation LM 723 Based 24V 2A DC power supply with LED indication One no toggle switch used to ON OFF 24V DC power supply for SCR Over load and short circuit protection provided for DC power supply
80. me 24V AC Operation External Resistor Lamp load provided All output of IC s provided by banana connectors so users can patch and study ZVS One No Pot is provided for vary the frequency of Ramp used for ZVS applications One No Pot is provided for vary the AC cycle used for ZVS applications Mimic diagram provided in PCB fixed nice powder coated cabinet EXPERIMENTS Study of ZVS using TRIAC Study of Half cycle ZVS using SCR ZVS Application Study of integral cycle control using TRIAC or H W Integral cycle control using SCR DOCUMENTATION One technical experimental manual consists of experimental procedure and ICs data sheets etc 9 OPTICAL TRIAC SYSTEM VPET 400 One no of TSA3100G Optical TRIAC provided for power circuit One no of TCA785 IC based TRIAC firing pulse generation with firing angle variation One no of potentiometer provided for firing angle variation 180 100W lamp provided for load 230V AC Input for power circuit 15V DC provided for control circuit 10 AUTOMATIC LIGHTNING CONTROL USING SCR amp OPTO ELECTRONIC COMPONENTS VPET 401 Input control is opto coupling Two SCRs rated at 600 Volt 12 Amp Output Rating 230 Volt 5 Amp isolated by 1 1 SUGGESTED EXPERIMENTS THREE DEVICES PART II IGBT MOSFET RELATED PRODUCT IGBT MOSFET STATIC AND DYNAMIC CHARACTERISTICS TRAINER BJT IGBT MOSFET CHARACTERISTICS TRAINER
81. nd SCR input and output connectors are provided for easy studying and patching One no of SPDT provided to ON OFF AC Input One no LED indicate the input AC Status All are mounted on a wooden box Universal motor as load 14 CLOSED LOOP CONTROL OF FHP AC INDUCTION MOTOR VPET 213 One no of Phase control IC used for pulse generator One no of potentiometer used to vary firing the firing angle 0 180 Pulse amplifier and pulse isolation provided 2 Nos of 1 1 pulse transformer used for pulse isolation 2 Nos of SCR used as power device 230V AC used for power circuit input Necessary test points and SCR input and output connectors are provided All are mounted on a wooden box One Analog PI controller for closed loop operation One FHP AC Induction motor without loading arrangement Make Panasonic with tacho feedback arrangement One no of fuse provided for output section for output current protection One no of SPDT Provided to ON OFF AC input One no Digital speed indicator provided to indicate set actual speed of the motor 15 DC MOTOR SPEED CONTROL TRAINER CLOSED LOOP VPET 214 Ramp and Pedestal Trigger circuit One no of Phase control IC used for pulse generator One no of potentiometer used to vary firing the firing angle 0 180 Pulse amplifier and pulse isolation provided 2 Nos of 1 1 pulse transformer used for pulse isolation Necessary test po
82. ne Control amp Power Regenerative Breaking circuit for INPUT CIRCUITRY One potentiometer to vary the field voltage One Potentiometer provided to vary the armature voltage One SPDT switch provided to ON OFF armature power Test points are provided for 1 Carrier frequency 11 Armature control voltage 111 One pair of Armature PWM pulses iv Field control PWM pulse One Rocker switch provided to power the equipments MOTOR SETUP 3 hp DC shunt Motor with loading arrangement fixed on a mechanical frame spring balance loading with dial indication One optical encoder is provided for the speed measurement 7 SPEED CONTROL OF SLIP RING INDUCTION MOTOR USING IGBT CHOPPER PECI4HV10 A This module consists of three blocks 1 Motor mounted on a mechanical frame 2 Three phase converter inverter 3 Inverter firing control circuitry MAIN FEATURES Rotor voltage is controlled to vary the motor speed One transformer to feedback the recovered power to the line Efficiency is improved by returning power into AC system bus Wound rotor Induction motor mounted on a mechanical frame 3hp 30 1410 rpm slip ring induction motor Optical encoder with speed motor Optional One DC Generator coupled with motor to load the motor Optional Entire control circuit mounted inside a compact box Mimic circuit is drawn in the front panel Many test points are provided along with front panel
83. nets THREE PHASE AC VOLTAGE REGULATOR TRAINER VPET 215B Consists of SCR power circuit Firing circuit 6 Nos of SCR TYN612 with heat sink amp snubber circuit TCA785 based 3 phase firing pulse generator One Pot used to vary firing angle 180 0 6 Nos 1 1 pulse transformer used to isolate the gate pulses Gate carrier logic input provided One no SPDT used for PWM ON OFF Low voltage step down transformer for power circuit input Input 230 230 230V Output 24 24 24V 3A Fixed R L Load Experiment Testing of 3 phase AC Voltage regulator using R RL Load 7 DC CHOPPER TRAINER VPET 208 Consists of single quadrant chopper control circuit mosfet power circuit amp load TL494 pwm controller ic based pwm generation for mosfet chopper One number of potentiometer provided for pwm frequency adjustment One number of potentiometer provided for pwm duty cycle adjustment High speed opto provided for pwm isolation IR2110 driver ic used for pwm driving IRF840 mosfet used for power circuit 24vdc 2amp provided for chopper power circuit input One number on off switch with indication provided for dc voltage 230v ac input 15vde for control circuit Necessary test points provided all components are mounted in the pcb fixed with wooden cabinet LINE SYNCHRONIZED UJT TRIGGERING MODULE VPET 200 Consists of ujt firing circuit scr power
84. niversal motor using SCR based V F controller open closed loop SCR Based single phase converter and inverter forms V F controller Variable voltage achieved by controlling the firing angle of SCR converter Variable frequency achieved by controlling the firing pulse frequency of SCR Mc Murray inverter SCR CONVERTER AND FIRING CIRCUIT Op amp based linear firing circuit gives 0 180 d firing angle variation One no potentiometer used to vary the firing angle adjustment All four pulses isolated by pulse transformer and terminated in the front panel Four No s TYN1225 SCR forms single phase fully controlled converter with LC Filter gives 300V DC to SCR inverter MCB and fuse DC side provided for over current protection SCR MC MURRAY INVERTER AND FIRING CIRCUIT IC based firing circuit with variable frequency 10 50Hz 10 5V DC adjust the firing angle frequency Four No s Firing pulse with pulse transformer isolation terminated in the front panel 24 Four No s TYN612 SCR and four No s diode forms power circuit Four no Capacitor and two No s Center tapped inductor for commutation Separate control circuits for adjusting V F ratio Provision to control the V F ratio in external 0 5V DC closed loop Input 230V AC Output 0 230V variable AC and 10 50Hz variable frequency Current 7 5Amp 3 SPEED CONTROL OF THREE PHASE INDUCTION MOTOR C
85. nsformer used for gate pulse isolation Pulse output terminated at connector in the pcb for scr patching Two number of TY N612 scr inductor capacitor forms basic series inverter power circuit 24v dc 2amp provided for series inverter power circuit input One number of toggle switch provided for dc on off with indication Necessary test points provided for varies sections for waveform measurement 230v ac input 15vdc for control circuit input All components are mounted in the pcb fixed with wooden cabinet SINGLE PHASE CYCLOCONVERTER MODULE VPET 209 Consists of cycloconverter firing circuit scr power circuit load Ic based firing pulse generation to trigger four scr One number of potentiometer provided for firing angle variation 0 180d Two number of toggle switch provided to select output frequency 50hz 50 2 50 3 50 4hz etc Pulse transformer provided for gate pulse isolation All four pulses terminated in connector for scr patching Four number of TY N612 scr with heat sink and center tapped inductor provided for power circuit 24 0 24vac 2amp provided for power circuit input One number of fixed resistor provided for load One number of toggle switch provided for ac on off 69 12 Necessary test points provided for waveform measurement 230vac input 15 15vde for control circuit DC MOTOR SPEED TRAINER VPET 211 CONTROL One no of P
86. nt and protection LED Indication for over current short circuit condition Diode bridge converter and filter capacitor for input DC voltage IGBT inverter One voltmeter indicate DC voltage MCB for input ON OFF over current SPECIFICATION Input voltage Output voltage 230V AC 50Hz Three phase O0 200V AC variable voltage each phase 0 50Hz variable frequency each phase Output rating SAmp each phase Motor RL load can be used as load open closed loop possible optional 3 SPEED CONTROL OF THREE PHASE INDUCTION MOTOR USING IGBT INVERTER PEC16HV5 54 Six no IGBT IPM forms H bridge three phase sine PWM inverter Sine triangle PWM generation for IGBT switching frequency 2 5HKz One potentiometer used to vary the reference sine wave R Y B frequency One potentiometer used to vary the reference sine wave R Y B amplitude High speed opto coupler used for pulse isolation Built in driver IC in PWM power circuit Three no hall effect sensor for output DC current measurement and protection LED indication for over current short circuit condition Three phase diode bridge converter and filter capacitor for input DC voltage for IGBT inverter power circuit One voltmeter indicate DC rail voltage MCB for input ON OFF over current SPECIFICATION 230V AC 50Hz Three phase O0 240V AC variable voltage each phase 10 50H
87. o No s fixed load resistor for all devices Four No s potentiometer to vary all voltages LED indication for all power supply Three No s digital multimeter measurement of device parameters 230V AC input with Power ON OFF switch for SUGGESTED EXPERIMENTS 1 Study of VI characteristics of SCR 2 Study of VI characteristics of TRIAC 3 Study of Transfer characteristics of MOSFET Study of Transfer characteristics of IGBT characteristics of MOSFET 6 Study of Dynamic characteristics of IGBT J IGBT CHARACTERISTICS TRAINER VPET 202 Consists of one IGBT power device One no of 12V fixed DC power supply and one no of30V fixed power supply for characteristics of IGBT One no of potentiometer to vary the gate current One no of potentiometer to vary the collector current Fixed load resistor Power ON OFF switch provided All necessary points terminated in the front panel Provision for connecting ammeter and voltmeter TRANSIENT CHARACTERISTICS OF SCR AND MOSFET VPET 216 Make Vi Microsystems Model PECI6M1D Transient Characteristics of SCR One SCR TYN 612 with proper heat sink Turn ON transient OR turn off transient characteristics can be studied b c IC Based square wave generation for V and Vok One No of fixed load resistor Transient Characteristics of MOSFET One IRF840 MOSFET with heat sink One no 15V 30V
88. oller for Closed loop operation Intel 8051 Microcontroller based CPU card 2 Row x 16 Column LCD Dot Matrix with back light Display Alphanumeric Display Single Channel Single ended Analog Input Range 0 5 V DC Single Channel Analog Output 0 5 Volt One I V Converter and V I converter provided 4 Number of keys provided to give setpoint increment Decrement function etc In Built IC regulated power supply Provision to change any one of the following Input 0 5 V Output 0 5 V hp Single phase AC Motor setup 1hp Single phase Permanent capacitor induction motor 230V AC Input 1400 rpm Spring balance load setup Speed sensor with digital speed indication with speed feedback facility 0 5V Isolation Transformer Used for power circuit input voltage isolation Input 230V AC Output 110 0 110V AC IK VA Capacity SPEED CONTROL OF THREE PHASE INDUCTION MOTOR USING IGBT INVERTER V FCONTROL PEC16HV2 Six no IGBT Forms Bridge type three phase sine PWM inverter Sine triangle PWM generation with switching frequency 2 5KHz One potentiometer used to vary the reference sine wave RV Bi frequency One potentiometer used to vary the reference sine wave R Y B amplitude High speed opto coupler used for PWM isolation TR2110 IR2130 Driver IC used for IGBT gate drive Three no hall effect current sensor for output DC current measureme
89. oltage 180vdc 5 lamp Field voltage 220vdc 0 3amp Speed 1500 rpm Double side shaft extension Make benn De generator spec Power Lhp 6kw shunt type Armature voltage 180vdc 2 7amp Field voltage 220vdc 0 3amp Speed 1500 rpm Double side shaft extension Make benn Both motor and generator are coupled with base plate 3 1 HP DC MOTOR EDDY CURRENT LOAD SET UP PEC HV ACC3C This set up consists of one number of 1 de shunt motor coupled with 2 eddy current load set up with 3 digital speed and torque indicator Dc motor spec Power Lhp 75kw Armature voltage 180vdc 5 lamp Field voltage 220vdc 0 3amp Speed 1500 rpm Double side shaft extension Make benn Eddy current load set up 1 hp rating 0 80v lamp current rating 1500 rpm speed Electronic dc voltage controller provided for torque variation Torque sensor with torque indicator Speed sensor with speed indicator Both motor and eddy set up coupled with base plate 4 440V DC MOTOR LOAD SET UP PEC HV ACC3D This set up consists of one number of 1 dc shunt motor coupled with 2 mechanical spring balance load set up with 3 digital speed indicator 74 Dc motor spec Power Armature voltage Field voltage Speed Lhp 75kw 440vdc 2amp 220vdc 0 3amp 1500 rpm Double side shaft extension Make benn 5 440V DC MOTOR GENERATOR LOAD SET UP PEC HV ACC3E This set up consists of one number of 1 de shunt motor coupled with 2 1 H
90. on One No potentiometer used to vary the firing angle 180 0 All four pulses terminated on the front panel for external SCR device module PEC14M15 interface Carrier logic implemented for SCR self start carrier frequency 4KHz Debounce logic circuit implemented for gate pulse ON OFF One No toggle switch provided for gate pulse ON OFF 230V 50Hz AC input fuse provided for over load protection One No rocker switch with LED indication for power ON OFF Provision to control the firing angle through external 0 5V DC Provision to control the firing angle through external 4 20mA optional By external interface with SCR device module PECI4M15 the following experiments can be conducted l Single phase half controlled converter 2 Single phase fully controlled converter 3 Single phase AC regulator SINGLE PHASE BRIDGE FIRING CIRCUIT WITH PI PEC14M14 PI 5 CHOPPER FIRING MODULE PEC14M16 Line synchronized IC based linear firing circuit for SCR applications Line synchronization achieved by 230 9V step down transformer Four No s firing pulses to trigger four SCRs 1 1 1 Pulse transformer used for gate pulse isolation One no potentiometer used to vary the firing angle 180 0 All four pulses terminated on the front panel for external SCR device module interface Carrier logic circuit implemented for SCR self start carrier frequ
91. on of Separately excited Motor b Transfer function of DC Servo Motor This setup consists of d 16 DC MOTOR a 100W DC Separately excited DC servo Motor setup b Manual 100W Separately Excited DC Servo Motor Armature Voltage Amp Field Voltage 0 48V DC Shunt type separately excited Speed 1500 rpm Rating 100W One Optical Encoder provided to sense the speed One 3 2 Digital Display provided to display the speed Double side shot extension with speed indication Mechanical loading arrangement 0 48V DC 2 7 b Manual Detailed Experimental Manual provided to explain To measure the motor parameters Determination of Transfer function GENERATOR TRANSFER FUNCTION STUDY TRAINER PEC14HV1 33 17 WARD This trainer is designed to drive the 1HP DC motor optional So that varies parameters of DC motor generator can be found experimentally It consists of SCR based fully controlled converter for armature voltage variation 0 200V DC variable 5 AMP capacity One no SCR based fully controlled converter for field voltage adjustment 100 220V DC variable 1AMP One no SCR based AC regulator for motor generator winding inductance measurement 0 100V 1 AMP variable One no diode bridge converter for DC generator field voltage 200V fixed Four No s DPM for armature current voltage and field current voltage measurement Two
92. ontrolled SPECIFICATIONS CONVERTER SINGLE PHASE FIRING BRIDGE CIRCUIT Four Isolated gate signals for Full Bridge converter Firing Angle vary from 180 to 0 through Ramp and pedestal control Gated carrier source at 4 KHz SCR CIRCUIT Four thyristors are provided Snubber circuit is provided to each device All gate signals are feed through polarized connectors Thyristor power pack used to provide variable field voltage of DC Motor OTHER FEATURES One F V converter provided to convert the pulses of the speed sensor to voltage One 3 digit display provided to display the actual and reference speed Opto coupler is provided for coupling Pulse transformer provided for coupling Pulse transformer provided to isolate low power and high power sides of the circuitry APPLICATIONS Study of Thyristor control of DC Motor Measure the speed of DC motor Display the speed of DC Motor Establish an open loop control Study of DC variable Speed Drive 6 SPEED CONTROL OF DC SHUNT MOTOR USING SCR DUAL CONVERTER PECI4HV6A Consists of dual converter firing circuit and SCR power circuit FIRING CIRCUIT PECI4HV6A Two sets of op amp based linear firing circuits for ve amp ve group SCRs 8 No s of triggering pulse with 1 1 pulse transformer isolation One No SPDT with debounce logic for all pulse ON OFF One no toggle switch to select circulating
93. or setup with rotor converter circuit amp RL For DC filtering SCR 3 phase Inverter It consists of 6 Nos of SCRs rated at 1200V 50Ampwith suitable heat sinks to form 3 phase fully controlled converter work as a 3phase inverter gt 90 SCR 3 phase inverter firing circuit Six Isolated gate signals for Full Bridge Converter Firing Angle variable from 180 to 0 through Ramp and pedestal control Gated carrier source at 4 KHz Housed in a Sleek cabinet Test points are provided on the front panel for detailed study of circuit signals by the student Necessary test points are terminated at sockets so that the student can monitor measure study the signals using CRO DVM etc One potentiometer to vary the angle One ON OFF switch with indicator provided to power the control circuitry so that the students can monitor all the test points of the control circuitry for correct functioning firing Slip ring motor with diode bridge rectifier 3 phase 3 hp slip ring induction motor Make Benn Volts 400 440V 3 phase 50 Hz 2 2 KW 3 hp RPM 1440 4 5 Amps Rotor Volts 210 Volt 29 Rotor Current 6 Amps One no of 3 phase bridge rectifier is provided to convert rotor circuit volt 13 210V to DC One no of L amp R provided for DC filtering Necessary test points provided for easy study Entire control circuit mounted inside a compact box Mimic ci
94. os are provided to isolate gate control circuitry IGBT IC drivers are used to drive switches Output 0 to 220Volt AC 5 Amp One MCB provided to switch on the AC input to the power circuit One DC Voltmeter provided to measure the DC link voltage One hall effect current transducer provided in the DC link bus and used for protection The AC output of IGBT bridge is terminated at banana sockets One Hall effect current transducer provided in the AC output line and used for protection Test points provided on the Front panel DC link Current DC link Voltage AC output current Breaking IGBT with Breaking resistor provided PROTECTIONS The protection circuit monitors 1 AC output current ii DC link voltage 11 DC link current and takes appropriate protection like Over Voltage Under Voltage and Over Load One LED to indicate the Shut Down condition due to protection One Reset switch is provided to restart the operation One Control amp Power circuit in DC rail for Breaking over voltage INPUT CIRCUITRY One Potentiometer provided to vary the AC Output voltage One potentiometer provided to vary the frequency of the output voltage Range 10Hz 100Hz One SPDT switch provided to release gate pulses 5 Test points are provided for 1 Carrier frequency 11 PWM 1 and PWM 2 pulses 11 DC link current iv load current One Rocker switch provided to power the equipment b Digital PI Contr
95. otor coupled with 2 mechanical spring balance load set up with 3 digital speed indicator Ac motor spec Power hn Single phase permanent capacitor type 230vac 50hz input Speed 1400 rpm Speed sensor with speed indicator 17 1 HP AC MOTOR GENERATOR LOAD SET UP PEC HV ACC3B This set up consists of one number of 1 ac motor coupled with 2 1 HP de shunt generator act as load with 3 digital speed indicator Ac motor spec Power le Single phase permanent capacitor type 230vac 50hz input Speed 1400 rpm Speed sensor with speed indicator De generator spec Power 3hp 1 8kw shunt type Armature voltage 180vdc 7amp Field voltage 220vdc 0 8amp Speed 1500 rpm Double side shaft extension Make benn Both motor and generator are coupled with base plate T1 18 1 HP AC MOTOR EDDY CURRENT LOAD SET UP PEC HV ACC3C This set up consists of one number of 1 ac shunt motor coupled with 2 eddy current load set up with 3 digital speed and torque indicator Ac motor spec Power hn Single phase permanent capacitor type 230vac 50hz input Speed 1400 rpm Eddy current load set up 1 hp rating 0 80v 3amp current rating 1500 rpm speed Electronic dc voltage controller provided for torque variation Torque sensor with torque indicator Speed sensor with speed indicator Both motor and eddy set up coupled with base plate 19 1 HP THREE PHASE MOTOR LOAD SET UP PEC HV ACC3M This set up consists of one number of 1
96. over load SUGGESTED EXPERIMENTS 1 Single phase cyclo converter with different output frequency with the different voltage 9 SINGLE PHASE SCH FULL BRIDGE INVERTER PEC14M14 INV Consists of SCR power circuit and firing circuit 4046 IC based square wave generation with adjustable frequency One no potentiometer used to vary the frequency 10 100Hz 1 1 Pulse transformer used for gate pulse isolation Pulse output terminated in the front panel for user patching Power circuit consists of four No s SCR TNY612 four no diodes Two No s center tapped inductor and capacitors provided for power circuit commutation LM 723 Based 24V 2A DC power supply with LED indication One no toggle switch used to ON OFF 24V DC power supply Over load and short circuit protection provided for DC power supply 230V 50Hz AC input 15V DC LAMP for control circuit One no fuse provided for power supply protection necessary test points provided SUGGESTED EXPERIMENTS 1 Study of inverter firing circuit 2 Testing of SCR inverter with R load with frequency variation 10 SCR SERIES PEC14M6 INVERTER Consists of SCR power circuit and firing circuit IC Based firing pulse generation to trigger SCR One no pot used to vary the frequency of firing pulse 300 600Hz One no toggle switch to ON OFF SCR gate pulses 1 1 Pulse transformer used for gate pulse iso
97. p DC shunt Motor with loading arrangement fixed on a mechanical frame spring balance loading with dial indication One optical encoder is provided for the speed measurement 6 SPEED CONTROL OF DC SHUNT MOTOR USING IGBT USING FOUR QUADRANT CHOPPER THREE PHASE INPUT PEC16HV7 This trainer is designed to study the working principle and demonstrate various section of a 3 Phase Input IGBT 4 Quadrant Chopper Drive This trainer is provided with Hall Effect Current Transducers at required lines for protection and used for measuring the current The front panel mimic diagram shows various section of the trainer like Power circuitry Protection Input circuitry etc Various Test points provided at the front panel allows the students to study various signals of the circuitry of the trainer FEATURE 4 Quadrant Chopper for Armature for bidirectional drive for Separately exiting DC motor of lhp 3hp Separate variable field system is IGBT chopper Hall Effect Current Transducer for measuring Armature Field Currents amp DC link Bus Regenerative Breaking provided POWER CIRCUIT Uncontrolled Bridge rectifier Rated for 1200V 25Amps for converting AC input to DC link voltage DC link capacitors provided One Intelligent power module consisting of 6 IGBTs of 1200 volt 25Amps provided IPM provides one 12A IGBT for Breaking 4 Nos of IGBTs of IPM are provided to form 4 Quadrant Armature Drive and 2
98. per circuit Separate firing circuit for unipolar PWM generation PWM frequency 2 to 5KHz One potentiometer used to vary the duty cycle ratio High speed opto coupler used for pulse isolation TR2112 IR2130 Driver IC for IGBT gate drive Three no hall effect current sensor for output DC current measurement and protection Output overcurrent short circuit protection with LED indication Diode bridge converter and filter capacitor for input DC voltage IGBT chopper One Voltmeter indicate DC rail voltage MCB for input ON OFF over current SPECIFICATION Input voltage Output voltage 230V AC 50Hz 0 to 200V DC Oto 200V DC variable voltage Output rating 5Amp One no IGBT forms single quadrant chopper for field circuit Separate control circuit for field chopper PWM generation One pot used to vary the duty cycle ratio of PWM Separate opto driver circuit provided for single quadrant chopper Motor R amp L load can be as load optional current 7 THREE PHASE INPUT IGBT BASED FOUR QUADRANT CHOPPER PEC16HV7 Four no IGBT IPM forms H bridge four quadrant unipolar chopper circuit Separate firing circuit for unipolar PWM generation PWM frequency 5KHz One potentiometer used to vary the duty cycle ratio High speed opto coupler used for opto coupler used for pulse isolation Built in driver IC for IGBT IPM gate drive Three no
99. put One no auto transformer used to vary It consists of two sections the 24V AC 0 24V AC a DC chopper control circuit with One no analog voltmeter indicate the variable duty cycle ratio AC output voltage 0 30V AC b MOSFET Based chopper power Fuse amp LED provided circuit Used for line regulation IC Based PWM generator SMPS CONTROLLER One no of Potentiometer used to vary duty TRF250 MOSFET based forward cycle of PWM signal 10 75 converter Necessary test points provided to study the TL 494 Used for PWM generation control circuit 62 One no of IRF 840 MOSFET used as a power switch SV 10V DC unregulated power supply for power circuit input One no of fixed R Load provided One no of inductor and power diode for power circuit One ON OFF switch provided for power circuit input voltage By adjusting duty cycle output voltage can be varied One no of Analog DC Voltmeter Output Voltage lt Input Boost Mode Output Voltage gt Input Buck Mode All are mounted on a wooden box Input 230V 15V DC for power circuit 3 PUSH PULL PECI6M11 Two nos of IRF840 MOSFET used as a power device High frequency transformer used to isolate the output signals TL494 used to generate PWM for MOSFET Two nos of Potentiometer used to vary duty cycle ratio frequency of PWM 24V DC Input 12V DC Output 1 Amp Necessary test points INVERTER 4 RESON
100. r SCR self start 7 Nos of test points provided for signal test measure purpose b Power Circuit It consists of two nos of SCRs rating at 600V 12A with heat sink is provided Two nos of power diode provided One no of output transformer is provided Input 24V with 5 tappings Output 230V 24V One no of Iron core Inductor is provided 100mH 1 Amp One no fuse is provided for over load protection One no AC Capacitor provided for SCR commutation c 24V DC Source It consists of LM723 based voltage regulator provided for DC input to SCR power circuit Rating 24V DC 2 Amps One no of toggle switch provided for DC ON OFF One LED Indication Current fold back facility provided for output Over current Short circuit Documentation Support One no of technical User manual with circuit diagram 20 Experiments Study of Parallel inverter firing circuit Study of SCR parallel inverter with different frequency Calculation of SCR turn ON OFF time of SCR parallel inverter Protection Output Over Load or short circuit protection Input 230V AC 5 50Hz operation 6 THREE PHASE PARALLEL INVERTER PEC14HV12 This trainer 1s designed to study the working principle of three phase parallel inverter This set up consists of a Three phase parallel inverter firing circuit b Parallel inverter power circuit c LM723 based 23V DC source a Three phase
101. r load input B INDUCTIVE LOAD PEC HV ACC2 1 SINGLE PHASE INDUCTIVE LOAD 3kw rating PEC HV ACC2A Single phase input Different selector switch provided for current 5 AMP capacity selection Variable type Fuse provided for input protection Single phase input All are mounted on a moveable cabinet Banana connector provided for input Banana connector provided for power input Fuse provided for protection 72 2 THREE PHASE INDUCTIVE LOAD PEC HV ACC2B SAMP capacity Variable type Three phase input Banana connector provided for input Fuse provided for protection C MOTOR LOAD PEC HV ACC3 l 2 J 10 11 12 14 e 16 17 18 19 20 1 hp dc shunt motor spring balance load set up PEC HV ACC3A 1 hp de shunt motor generator load set up PEC HV ACC3B 1 hp de shunt motor eddy current load set up PEC HV ACC3C 1 hp 440vdc shunt motor spring balance load set up PEC HV ACC3D 1 hp 440vde shunt motor generator load set up PEC HV ACC3E 1 hp 440v de shunt motor eddy current load set up PEC HV ACC3F 1 hp dc series motor spring balance load set up PEC HV ACC3G bp dc series motor generator load Set up PEC HV ACC3H 1 hp de series motor eddy current load set up PEC HV ACC3 3 hp de shunt motor spring balance load set up PEC HV ACC3M 3 hp dc shunt motor generator load set up PEC HV ACC3N 3 hp de shunt motor
102. r setup b Variable AC DC source with meter setup a 100W Separately Excited DC Servo Motor Armature Voltage 0 48V DC 2 7 Amp Field Voltage 0 48V DC Shunt type separately excited Speed 1500 rpm Rating LOOW One Optical Encoder provided to sense the speed One 3 2 Digital Display provided to display the speed Double side shot extension with speed indication Mechanical loading arrangement b Variable AC DC Source One no of LM723 based 0 S50V 3A Variable DC Source with Short circuit Over load protection for Armature Voltage variation One no of LM723 based 0 50V 1A DC Variable source with short circuit Over load protection for field section One no of Isolated 0 50V AC 1Amp variable AC source for motor inductance measurement One no of DC digital voltmeter 0 50V provided for Armature voltage measurement One no of DC digital ammeter 0 5A provided for Armature current measurement One no of 0 50V DC digital meter provided for Field Voltage measurement One no of 0 2A DC digital ammeter provided for field current measurement One no of 0 50V AC digital Voltmeter for AC Voltage measurement One no of 0 1 A AC digital ammeter for AC current Measurement One no of Digital stop clock provided for time List of Experiments Determination of Armature amp Field parameters Determination of Motor mechanical parameters Derivation of Transfer Functi
103. r work as a 3phase inverter a gt 90 DSP Based inverter firing circuit TMS320F2407A DSP Based firing circuit Six Isolated gate signals Bridge Converter Firing Angle variable from 180 to 0 through Ramp and pedestal control Gated carrier source at 4 KHz Housed in a Sleek cabinet Test points are provided on the front panel for detailed study of circuit signals by the student Necessary test points are terminated at sockets so that the student can monitor measure study the signals using CRO DVM etc One potentiometer to vary the firing angle One ON OFF switch with indicator provided to power the control circuitry so that the students can monitor all the test points of the control circuitry for correct functioning for Full 36 Slip ring motor with diode bridge rectifier 3 phase 3 hp slip ring induction motor Make Benn Volts 400 440V 3 phase 50 Hz 2 2 KW 3 hp RPM 1440 4 5 Amps Rotor Volts 210 Volt Rotor Current 6 Amps One no of 3 phase bridge rectifier is provided to convert rotor circuit volt 13 210V to DC One no of L amp R provided for DC filtering Necessary test points provided for easy study Entire control circuit mounted inside a compact box Mimic circuit is drawn in the front panel Many test points are provided along with front panel A Nice text lab manual is provided Power Supply Input 230V 10 3 phase AC
104. ransformer for power circuit input Input 230 230 230V Output 24 24 24V 3A Fixed R L Load 4 THREE PHASE HALF CONTROLLED CONVERTER VPET 215A re Consists of SCR power circuit Firing circuit 3 Nos of SCR TYN612 with heat sink amp snubber circuit 3 Nos of Power diode TCA785 based 3 phase firing pulse generator One Pot used to vary firing angle 180 0 3 Nos 1 1 pulse transformer used to isolate the gate pulses Gate carrier logic input provided One no SPDT used for PWM ON OFF Low voltage step down transformer for power circuit input Input 230 230 230V Output 24 24 24V 3A Fixed R L Load RAMP amp PEDESTAL TRIGGER CIRCUIT FOR AC LOAD VPET 203 Consists of BTA12 triac based ac regulator for lamp intensity control Tca785 ic based firing pulse generation to trigger triac One number of potentiometer used ac variable R One number of potentiometer provided for firing angle adjustment 0 180d 67 Pulse transformer provided for gate pulse isolation 230v on off pulse output terminated in the pcb with on off switch Necessary test points provided for firing circuit waveform measurement 230v ac input for power circuit with on off switch fuse protection One number of 230v lamp provided for load One number 230 9v step down transformer provided for output waveform measurement in cro All are mounted in the pcb fixed with wooden cabi
105. ransmitter amp receiver are terminated by banana connector in the base plate One no of Digital AC Voltmeter used PWM frequency at 63KHz APP to indicate stator rotor voltage of 6N137 Opto used for pulse isolation transmitter or receiver One potentiometer used to vary the One no of 230V S50V AC Step down frequency of PWM study module transformer for rotor voltage input One potentiometer used to vary the Two nos of ON OFF switch for rotor ref voltage of controller S M voltage of transmitter receiver Provision to select single multi output One no of power ON OFF switch Output filtered by LC filter Varies fault with indication analysis switches Al are mounted on a nice cabinets ELECTRONIC LOAD 5 DC DC CONVERTER SMPS Transistor based single quadrant TRAINER chopper circuit load instead of resistive load L SINGLE amp MULTIPLE OUTPUT Separate circuits for PWM generation SMPS TRAINER VSMPS 02 One potentiometer used to vary the duty cycle ratio so as load current Voltmeter Ammeter for output voltage Used for LOAD regulation SPECIFICATION Input 0 24V AC Output 5V 2Amp single output S5V 2Amp 12V 5A 12V 5A 2 BUCK BOOST CHOPPER VPET 350 This set up consists of three separate modules 1 Input power module 2 SMPS controller 3 Electronic load INPUT POWER MODULE 230V 24V 3Amp step down transformer Used to give isolated 24V AC for SMPS in
106. rator One number of high speed Opto isolator provided for PWM isolation Driver IC IR2110 used to drive power switch High frequency transformer provided for isolation Power circuit I P voltage 15V DC Output voltage 0 25 VDC 1 amp One number of fuse provided for protection Voltage feed back from the output for closed loop operation L amp C Provided for filtering 3 MOSFET BASED BUCK BOOST CONVERTER It consists of two sections A DC chopper control Circuit with variable duty cycle ratio b MOSFET based chopper power circuit IC based PWM Generator One no of Potentiometer used to vary duty cycle of PWM signal 10 75 Necessary test points provided to study the control circuit One no of IRF 840 MOSFET used as a power switch SV 10V DC unregulated power supply for power circuit One ON OFF switch provided for power circuit input voltage By adjusting duty cycle output voltage can be varied One no of analog DC voltmeter Output Voltage lt input Boost mode Output Voltage gt Input Buck Mode All are mounted on a wooden box Input 230V 115V DC for power circuit MOSFET BASED FORWARD CONVERTER One number of powers MOSFET IRF840 used as power switch with suitable heat sink TL494 IC based PWM generator One number of high speed Opto isolator provided for PWM Isolation Driver IC IR2110 used to drive power switch High frequency transform
107. rcuit 1s drawn in the front panel Many test points are provided along with front panel A Nice text lab manual is provided Power Supply Input 230V 10 3 phase AC 15V DC 0 5A regulated output for the control circuitry 11 D C SERIES MOTOR CONTROLLER USING JONES CHOPPER PEC14M21A This setup designed for open loop amp closed loop speed control of DC Series motor using SCR Jones chopper circuit It consists of a SCR Jones chopper firing and power circuit b DC Motor setup c Digital PI Controller d Isolation transformer a SCR Jones chopper firing and power circuit Two nos provision SCR with RC snapper Two nos Diodes and one fixed load resistor One center tapped 0 50 100 inductor 120mH for power circuit with one commutating capacitor Two isolated firing pulses to fire SCR Two nos Toggle switches to switch ON Auxiliary SCR pulse and main SCR pulse One 300V Fixed DC Supply for power circuit and one toggle switch to ON OFF DC supply All input and outputs of Power circuit components SCR DIODE LOAD are terminated in a PCB for student patching Necessary test points for study of firing circuit One Potentiometer variation for Dutycycle b DC Series Motor Lhp Armature voltage 220vdc 5amp Speed 1500rpm Double side shaft extension Speed sensor with speed display and speed feed back 0 5vdc facility Mechanical spring balance load
108. s are isolated using Opto Isolator Protection circuit for over current with LED indication Independent Power supplies for all Isolated circuits Voltmeter to Indicate the DC Link Voltage All current PWMS amp Feedbacks are terminated at Front panel FRC Connectors are provided to Interface with the External digital controllers All the Input Output Lines are Terminated at Banana sockets 0 5hp 3d AC Induction Motor 39 200V 1415 RPM 4 IGBT MOSFET BASED AC DC DRIVES 1 SPEED CONTROL OF SINGLE PHASE INDUCTION MOTOR USING IGBT INVERTER V F CONTROL PECI6HV1 1 V F Control of Single phase Induction Motor This setup consists of Single phase inverter PECI6HV1 Digital PI Controller bp Single phase AC Motor setup Isolation Transformer ao oP a Single phase inverter PECI6HV1 IGBT based sine wave Inverter Output Input 230V AC Output 230V AC 5Amp Frequency 10Hz 100Hz Hall Effect Current Transducers provided to DC link voltage and AC output Protection circuits provided to protect on various conditions Mimics circuit screen printed in the front panel More than 8 Test points are provided Housed in a sleek box POWER CIRCUIT Uncontrolled Bridge rectifier Rated for 600V 35Amps for converting AC input to DC link voltage DC link capacitors provided 4 Nos of IGBT to form full bridge Inverter Snubber circuit is provided to each device High speed Opt
109. set up for closed Ss Digital PID controller operation Intel 8051 Microcontroller based CPU card 2 Row x 16 Column LCD Dot Matrix with back light Display Alphanumeric Display single Channel Single ended Analog Input Range 0 5 V DC Single Channel Analog Output 0 5 Volt One I V Converter and V I converter provided 4 Number of keys provided to give set point increment Decrement function etc In Built IC regulated power supply 30 Provision to change any one of the following Input 0 5 V Output 0 5 V 12 AC SERVO MOTOR POSITION CONTROL TRAINER PEC 02 This trainer designed for versatile applications Experiments mentioned above It consists of An AC Servo motor mounted on a open frame Power driver to control speed of the motor To study speed servo control of AC servo motor One Optical sensor provided for speed sensor and display on a 3 digit display This trainer system 1s a compact amp advanced version for class room experiment set up for the students to operate and study a practical speed measurement using AC Servo motor FEATURES One 230V 11 5 Control Voltage Two phase AC servo motor mounted on a open frame Speed Range 0 to 1500 RPM geared down in 1 30 ratio One Optical sensor coupled to shaft to measure speed AC Servo Motor s speed is controlled by varying control voltage 11 5V Direction of the motor is varied by phase reversal of
110. sink snubber circuit amp two No s power diode provided for power circuit One no center tapped inductor capacitor used for commutation circuits LM723 Based 24V DC 2AMP DC power supply with S C O C protection for chopper power circuit input voltage One no toggle switch for 24V DC ON OFF with LED indication SUGGESTED EXPERIMENTS 1 Auxiliary SCR commutated chopper Complementary SCR commutated chopper 3 Jones chopper 8 SINGLE PHASE CYCLO CONVERTER PECI4M14CY Consists of firing circuit SCR power circuit and load Line synchronized IC based linear firing circuit Line synchronization achieved by step down transformer Four No s firing pulse with pulse transformer isolation to trigger four SCR One no potentiometer used to vary the firing angle 180 0 Carrier logic implemented carrier frequency 4KHz One no toggle switch with debounce logic for pulse ON OFF EPROM Based firing pulse frequency variation Two No s toggle switch to select different frequency 50 50 2 50 3 50 4 Hz Power circuit consists of four No SCR with fuse protection 14 Anode Cathode Gate terminals are terminated in the front panel for user connection 24V AC LAMP Provided for power circuit input with ON OFF switch One no fixed R load provided Center tapped inductor for power circuit 230V 50Hz AC input with ON OFF rocker switch fuse for
111. sis SPECIFICATIONS Capacity 500V A Input voltage 24V DC Output voltage 150 230V AC variable voltage 45 55Hz variable frequency Output rating 2 5A 9 DSP BASED 500VA UPS TRAINER PEC16HV DSUPS This trainer is designed to study the working principle of solar panel powered or SCR Mains converter powered DSP Based UPS system This trainer consists of a IGBT Based Single phase SPWM inverter b TMS320F2407A DSP based PWM Controller c Battery 24V 48V d Solar panel based Battery Charger SCR Based Battery Charger a IGBT MOSFET Based Single phase SPWM Inverter A Nos of IGBT MOSFET with suitable heat sink and snubber circuit forms H Bridge inverter One no of Inverter transformer used for IGBT output for step up the voltage and Isolation 50 One no of LC Filter used to Filter the inverter output voltage One no of Voltage sensing transformer and current sensing transformer for feedback voltage for closed loop and protection One no of filter capacitor for DC input b TMS320F2407A DSP Based PWM Controller Digital signal processor TMS320F2407 used to generator 16 SPWM Pulses to trigger IGBT amp to generate single phase converter gate pulse for battery charger 4 Nos of PWM output used to generate 4 PWM IGBT MOSFET 2 Nos of PWM output used to generate 2 Pulses SCR 2 Nos of ADC Used to sense the Inverter output voltage and current for feedback 1 No
112. splay single Channel Single ended Analog Input Range 0 5 V DC Single Channel Analog Output 0 5 Volt One I V Converter and V I converter provided 4 Number of keys provided to give set point increment Decrement function etc In Built IC regulated power supply Provision to change any one of the following Input 0 5 V Output 0 5 V d Motor set up Ihp DC shunt Motor Armature voltage 440vdc 2amp Field voltage 220vdc Samp Speed 1500rpm double side shaft extension Speed sensor with speed display and speed feed back 0 5vdc facility mechanical spring balance load set up 5 CLOSED LOOP SPEED CONTROL OF PMDC MOTOR USING SCR CONVERTER PEC 03A This experiment setup consists of a 180Volt Permanent Magnet DC motor SCR control module to drive the DC motor 3 digit digital speed indicator and optional speed measurement amp control module which is interface to a Microprocessor kit or an IBM PC computer FEATURES 180V Permanent Magnetic DC motor 1s provided Line commutated SCR converter to feed the armature Voltage of the DC motor Phase angle firing A Potentiometer is provided for setting the speed Sensor for speed sensing provided A Digital Indicator with 3 2 digit LED display for standalone operation Open Loop to indicate the speed of the DC motor Can Operate in 1 Stand alone mode Only open loop 11 Microprocessor controlled 111 IBM PC Computer c
113. ssary accessories to charge 24 48V Battery Gi SCR Mains converter based battery charger 2 Nos of SCR amp Diode forms 1 half controlled converter for battery charging 230V AC Input 24 48V DC output One no of LC Filter Two no of pulse transformer for pulse isolation and pulse amplification circuits Technical Specifications Input 24V 48V DC Output 1d 230V Sine wave output Capacity IKW Protection Circuit Inverter over current shut down with buzzer indication Battery deep discharge and over charge cut off protection with indication Battery over current cut off protection with indiction PC Based Software Windows based powerful software to operate the DSP based UPS trainer system It displays all parameters of UPS Inverter Voltage Inverter current Battery voltage Battery current Temperature ON line OFF line mode of operation RS232 interface provision to UPS 51 10 IGBT BASED THREE PHASE PWM INVERTER PECI6HV2A This trainer consists of three sections a Digital controller for 1 Sine PWM amp Multiple PWM generator 11 PWM Generation for 3 phase AC Drive ut PWM Generation for 3 phase UPS b 3 Phase IGBT Based power module c Battery with charger Optional dsPIC 30F4011 Based controller for SPWM Multiple PWM Generator Microchip s dsPIC30F4011 16 Bit Digital Signal Controller Operating at 33 nS amp 30 MIPS On Chip Motor Control Peripher
114. t Built in 50 30V 2Amp DC for power circuit input Over current protection circuit with LED indication All devices terminated individually for different configuration By suitable interface with external firing module PEC16M4 M5 it can be work as Single quadrant chopper Two quadrant chopper Four quadrant chopper unipolar Four quadrant chopper bipolar Single phase SPWM inverter 6 Single phase single pulse inverter All four device gate pulse inputs are terminated on the front panel for external interface MP MC DSP etc 230V AC Input 15V 15V DC for control circuits Optionally a hall effect current transducer provided for current measurement ae ET e SINGLE PHASE PWM INVERTER CONTROL CIRCUIT PEC16M4 1 Four no gate signal to trigger four IGBT MOSFET IC Based carrier triangular wave generation with variable frequency One no potentiometer used to vary the carrier frequency 2KHz to KHz IC Based reference sine square trapezoidal wave generation with variable amplitude amp frequency One no rotary switch to select different type of reference waves Two no potentiometer used to vary the frequency amplitude of reference signal LM311 Based comparator circuit it compares 43 carrier amp reference wave One no rotary switch to select PWM for different types of modulation sin trapezoidal square One no toggle switch with debounce
115. ted for pulse with on off switch Pulse transformer used for gate pulse isolation All pulses are terminated in the pcb for scr patching Two no TYN 612 scr and power diode used for power circuit Necessary test points provided for waveform measurement 24v ac 2Zamp provided for power circuit input with on off switch SINGLE PHASE FULLY CONTROLLED CONVERTER VPET 205 66 Consists of scr firing circuit fully controlled scr power circuit and R L load TCA 785 ic based firing pulse generation One number potentiometer provided for firing angle adjustment 0 180d 230 9v synchronization transformer provided for firing circuit Carrier logic implemented for pulse with on off switch Pulse transformer used for gate pulse isolation All pulses are terminated in the PCB for scr patching Four No TYN 612 scr with heatsink provided for power circuit Necessary test points provided for waveform measurement 24v ac 2Zamp provided for power circuit input with on off switch THREE PHASE FULLY CONTROLLED CONVERTER VPET 215 Consists of SCR power circuit Firing circuit 6 Nos of SCR TYN612 with heat sink amp snubber circuit CA785 based 3 phase firing pulse generator One Pot used to vary firing angle 180 0 6 Nos 1 1 pulse transformer used to isolate the gate pulses Gate carrier logic input provided One no SPDT used for PWM ON OFF Low voltage step down t
116. ters like Current Voltages etc A Separate dual ported RAM is provided for fast transfer of all parameters Motor current Voltage Speed etc to the PC for displaying Graphically The digitized datas are stored in the Dual ported RAM to be sent to IBM PC through RS232C port for displaying these on the CRT screen graphically and for further analysis Detailed Specifications Slip Ring Induction Motor 3 H P 3 Phase 400V 440V 50Hz 2 2 KW R P M 1440 Amp 4 5 with suitable rotor volts 210V or so and current 6 amp rating continuously coupled with appropriate DC 3 H P 2 2K W machine for electrical loading purpose through a resistive lamp load Make Benn Volts 400 440V 3 phase 50 Hz 2 2 KW 3 hp RPM 1440 4 5 Amps Rotor Volts 210 Volt Rotor Current 6 Amps DC Generator as Load Make Kirloskar Grampton Greaves 5 hp 1500 rpm Resistive load of 4 KW provided Both Slip Ring Induction motor and DC Generator are coupled together One optical encoder is provided for the speed measurement The output of optical encoder is signal conditioned amp calibrated to indicate the speed of the motor amp display on a 3 digit display Converter Inverter unit for slip power recovery scheme with inverter being Microcontroller controller 8051 thyristor PIV 1200V Current 25 Amp having a filter R C in between for filtering ripples of output DC of converter uncontrolled rectifier
117. three phase ac motor coupled with 2 mechanical spring balance load set up with 3 digital speed indicator Ac motor spec Three phase squirrel cage induction motor Power Lhp 75kw Current 1 8amp star connection three phase 415vac 50hz input Speed 1390 rpm Make siemens benn Speed sensor with speed indicator 20 1 HP THREE PHASE AC MOTOR GENERATOR SET UP PEC HV ACC3B This set up consists of one number of 1 three phase ac motor coupled with 2 1 HP dc shunt generator act as load with 3 digital speed indicator
118. tion achieved by 230 9V step down transformer One No firing pulse to trigger TRIAC 1 1 Pulse transformer used for TRIAC gate pulse isolation One No potentiometer used to vary the firing angle 180 0 Provision to control the firing angle through external 0 5V optional Carrier logic circuit implemented carrier frequency 4KHz Debounce logic circuit implemented for gate pulse ON OFF One No toggle switch for gate pulse 11 ON OFF One No TRIAC with snubber amp fuse for AC regulator power circuit 24V AC lamp with ON OFF switch for power circuit input One o fixed R and L used as load for power circuit 230V 50Hz AC input fuse provided for over load protection One no rocker switch for power ON OFF SUGGESTED EXPERIMENTS 1 Single phase AC regulator using TRIAC with R and RL load 3 SINGLE PHASE AC VOLTAGE CONTROLLER USING SCR and TRIAC PEC14M14A CH2 Line synchronized IC based linear firing circuit for TRIAC Line synchronization achieved by 230 9V step down transformer One No firing pulse to trigger TRIAC 1 1 Pulse transformer used for TRIAC gate pulse isolation One No potentiometer used to vary the firing angle 180 0 Provision to control the firing angle through external 0 5V optional Carrier logic circuit implemented carrier frequency 4KHz Debounce logic circuit implemented for gate pulse ON OFF
119. trolled converter for field voltage variation This set up is designed for speed control of dc motor both armature and field control method Separate PID controller can be used for armature closed operation It consists of a SCR based three phase fully controlled converter for dc motor armature circuit b Scr based single phase half controlled converter for motor field circuit One number of TCA785 phase control ic provided for scr firing pulse generation One number of potentiometer provided for firing angle variation 90 20degree Single phase step down transformer provided for supply synchronization 25 Two number of Pulse transformer provided for scr pulse isolation One number of Spdt switch provided for pulse on off All two pulses are terminated on the front panel for power circuit connection Test points provided for wave form measurement Two number of tyn1225 scr with suitable snubber and heat sink provided for Power circuit All two scr ans diode forms single phase half controlled converter power circuit Power circuit input and outputs are terminated by banana connector on the front panel Input Single phase 230v ac Output 100 200vdc lamp Protection circuit over current protection Field failure protection c Digital PID controller for closed operation Intel 8051 Microcontroller based CPU card 2 Row x 16 Column LCD Dot Matrix with back light Display Alphanumeric Di
120. ulator with R and RL load load optional 3 SINGLE PHASE DUAL CONVERTER PECI4HV6A a Firing Module 8 nos Isolated gate pulses for P group and N group SCR converter One DPDT switch is provided for selection of Dual converter with circulating current mode and without circulating current mode Two nos potentiometer to vary the firing angle of with circulating current mode and without circulating current mode One pulse ON OFF switch and power ON OFF switch is provided Necessary test points provided for student measurement 15V DC amp 9V AC for control circuit All components are housed in a fine screen printed cabinet b Power Circuit 8 Nos of SCR with snubber protection is provided for DN group converter All Al Ki terminals are terminated in front panel for student patching 25 pin shielded cable for pulse input Two Nos 230 24V 3A step down transformer for power circuit input AC voltage One Center tapped inductor 0 50 100 for power circuit with circulating current mode Optional All components are housed in a fine screen printed cabinet 4 THYRISTOR CHOPPER FOR SCR DC DRIVE PEC14HV7 19 Consists of SCR power circuit and firing circuit IC Based firing pulse generation to trigger auxiliary and main SCR Pulse transformer provided for gate pulse isolation One potentiometer used to vary the duty cycle ratio of PWM 10 90 Two no toggle s
121. witch with debounce logic for ON OFF gate pulse Power circuit consists of two no s TYN1225 SCR diode forms auxiliary SCR commutation circuit Fixed L C provided for power circuit commutation One no diode bridge converter with filter capacitor convert input 230V AC to DC for power circuit input MCB Provided for input AC ON OFF over current protection One no diode converter provided for field circuit DC motor control experiment optional 230V 50Hz Input Built in 15 15V DC for control circuit Provision to control the duty cycle ratio from external source voltage 0 5V Power ON OFF switch necessary test points for firing circuits SUGGESTED EXPERIMENTS 1 High voltage auxiliary SCR commutated chopper with R RL load 2 Speed control of DC shunt motor using SCR chopper 5 SINGLE PHASE PARALLEL INVERTER HIGH VOLTAGE PECI4M7HV Input 24V DC 2Amp Output Voltage a 230V AC 50VA b 24V AC 50VA Output Frequency 50Hz to 100Hz Variable It consists of 3 separate sections which is as follows a Parallel Inverter firing circuit b SCR power circuit c 24V DC Source a Parallel Inverter Firing Circuit 4046 VCO Based square wave generation with adjustable frequency 50 to 100Hz Square wave modified into short pulses by control ICs Two nos of 1 1 Pulse transformer provided for pulse Isolation Pulses imposed with high frequency square 4KHz fo
122. with R and RL load 2 THREE PHASE HALF amp FULLY CONTROLLED BRIDGE CONVERTER PEC14HV5 Specially designed for high voltage operation It consists of three phase firing module SCR three phase power circuit and high voltage accessories optional 1 FIRING MODULE Line synchronized op amp based three phase linear triggering circuit One No potentiometer used to vary the triggering angle 0 180 18 Line synchronization achieved but three phase step down transformer Carrier logic implemented for SCR self starting One No Toggle switch with debounce logic for pulse ON OFF Six No s 1 1 pulse transformer used for gate pulse isolation All six pulses output terminated in the front panel for device module interface 2 SCR POWER CIRCUIT Power circuit consists of two No SCR TNY1225 rating at 1200V 25AMP two no power diode rating at 1200V 50AMP All terminals of diode and SCRs terminated on the front panel for external connection One No MCB provided to ON OFF input three phase AC and over current protection Indicator and fuse provided for mains R Y B 3 SPECIFICATION Input 0 440V AC 50KHz Output 0 600V DC 5AMP 10AMP_ optional Three phase converter 0 440V AC JAMP 10AMP optional Three phase regulator 4 SUGGESTED EXPERIMENTS Three phase half and fully controlled converter with R and RL load optional Three phase AC reg
123. xiliary SCR commutated chopper Complementary SCR commutated chopper Jones chopper Current commutated chopper 5 Speed control of PMDC motor motor optional oo 6 CYCLO CONVERTER FIRING MODULE PEC14M17 7 COSINE FIRING CIRCUIT FOR SCR CONVERTER PEC14M18 Provision to vary frequency amp phase angle of SCR triggering pulses Line synchronized IC based firing circuit for phase control Line synchronization achieved by step down 12 0 12V transformer One no potentiometer used to vary the firing angle 180 0 Programmable IC for firing circuit frequency variation Two Nos toggle switch to select frequency 50Hz 50 2Hz 50 3Hz 50 4Hz Four No s gate pulse to trigger four SCR 1 1 1 pulse transformer used for gate pulse isolation All four pulses terminated on the front panel for external device module PEC14M15 interface Carrier logic circuit implemented carrier frequency 4K Hz Debounce logic circuit implemented for SCR gate pulse ON OFF One no toggle switch for SCR gate pulse ON OFF 230V 50Hz AC input fuse provided for over load protection One no rocker switch with LED indication for power ON OFF By external interface with device module PEC14M15 and inductive load PECI3ACC1 step down cyclo converter experiment can be performed Line synchronized IC based cosine wave crossing firing circuit Line synchronization achieved b
124. y step down transformer Op amp based integrator circuit for cosine wave generator Four No s gate pulse to trigger four SCR 1 1 1 pulse transformer used for pulse isolation One No potentiometer used to vary the firing angle 180 0 All four pulses terminated on the front panel for external device module PEC14M15 interface Carrier logic circuit implemented for SCR self starting Carrier frequency 4KHz Debounce logic circuit implemented for SCR gate pulse ON OFF One no toggle switch provided for SCR gate pulse ON OFF 230V 50Hz AC input fuse provided for over load protection One No rocker switch with LED indication for power ON OFF By external interface with device module PEC14M15 the following experiments can be conducted l Single phase half controlled converter 2 Single phase fully controlled converter 3 Single phase AC regulator 8 MICROPROCESSOR BASED SINGLE PHASE SCR TRIGGERING CIRCUIT TRAINER PEC18MP1 I a 4 e r d ce i du n S E CW P d es e Leger This trainer consists of 1 8085 microprocessor kit 2 SCR firing pulse interface chord with SCR device module PECI8MP1 MICROPROCESSOR TRAINER 8085 Microprocessor Micro 85eblII 8KB RAM 8KB EPROM One 8255 port to provide 24 TTL I O lines 21 Keys multifunction key board with double short characters for long life 6 Digit 7 segment display SCR FI
125. z variable Input voltage Output voltage frequency each phase Outputrating 10Amp each phase Motor RL can be used a load open closed loop possible optional 4 SPEED CONTROL OF DC SHUNT MOTOR USING IGBT USING SINGLE QUADRANT CHOPPER PEC16HV3 S One no IGBT forms single quadrant chopper for armature control open closed loop operation One no IGBT forms single quadrant chopper for field control TL494 Based PWM generation for both armature amp field circuit One potentiometer used to vary the duty cycle ratio of PWM armature One potentiometer used to vary the duty cycle ratio of PWM field High speed opto coupler used for pule isolation TR2110 IR2130 Driver IC used for IGBT gate drive Two no hall effect current sensor for field armature current measurement and protection Output over current short circuit protection with LED indication Diode bridge converter and filter capacitor for input DC voltage of IGBT chopper One voltmeter indicate DC rail voltage MCB for input ON OFF over current SPECIFICATIONS Input 230V AC 50Hz Output Armature circuit 0 200V DC variable 5Amp suitable 1HP motor Field circuit 90 220V DC 1Amp 5 SPEED CONTROL OF DC SHUNT MOTOR USING IGBT USING FOUR QUADRANT CHOPPER SINGLE PHASE INPUT PEC16HV3 This trainer is designed to study the working principle and demonstrate various section of
126. zation One No s 26 pin header to interface microprocessor kit Six Nos pulse amplifier with pulse isolation circuits Six No s 1 1 pulse transformer provided for gate pulse isolation All six pulses terminated in the PCB for SCR interface with ON OFF switch SCR POWER CIRCUIT PEC1I4HV1 P Six Noe TYN612 SCR with snubber circuit provided for power circuit All A K G terminals are terminated for external power circuit configuration One no three phase 230V 24V AC 2Amp provided for SCR power circuit input SUGGESTED EXPERIMENTS 1 Three phase fully controlled converter with R amp L load 2 Three phase AC regulator with R amp L load 10 TCA 785 IC BASED SINGLE PHASE SCR FIRING CIRCUIT PEC14M24 It consists of four number of isolated triggering pulse to trigger four scr TCA785 ic used for phase angle variation One number of 230 9v step down transformer provided for supply synchronization One number of potentiometer provided for phase angle or firing angle variation 180 0 Degree Carrier logic implemented in the pulses for scr self starting Pulse transformer provided for scr pulse isolation 230v ac input 15vdc for control circuit Necessary test points provided for wave form measurement All components are mounted in the PCB fixed with nice cabinets Facility provided for external control 0 5 Vdc 11 TCA 785 IC BASED THREE PHASE SCR FIRING CIRCUIT PEC14M2

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