EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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MUTHAYAMMAL ENGINEERING COLLEGE, RASIPURAM Department of Electrical and Electronics Engineering
I Semester – ME (PED)
Modeling and Simulation Laboratory
Manual Prepared by Approved by Prof.M.Muruganandam, M.E.(Ph.D), Dr P.Murugesan,B.E.,Ph.D., AP / EEE Proff. & HOD/EEE Revision No.:0 Date:15.09.2008
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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INSTRUCTIONS TO THE CANDIDATE
SAFETY: You are doing experiments in Power Electronics lab with high voltage and
high current electric power. It may cause even a fatal or loss of energy of your body system. To avoid this please keep in mind the followings
In case of any wrong observations, you have to SWITCH OFF the power supply related with it.
You have to tuck in your shirts or wear an overcoat. You have to wear shoes compulsorily and stand on mats made by
insulating materials to electrically isolate your body from the earth. ATTENDANCE:
If you absent for a lab class then you have lost several things to learn. Laboratory should be treated as temple, which will decide your life. So don’t fail to make your presence with your record notebook having completed experiments, observation with completed experiments, day’s experiment particulars with required knowledge about it and stationeries. RECORD:
Shows the performance of equipment and yourself. It will be very useful for future reference. So keep it as follows.
Write neatly; as they have to be preserved enter the readings in the record notebook those have been written in your observation.
Units should be written for all quantities. Draw necessary graphs and complete the record before coming to the
next lab class. Don’t forget to write the theory with precaution and inference of each
experiment.
MAY I HELP YOU
1. Device ratings should be noted. 2. Moving coil meters should be used for DC measurements. 3. Moving iron meters should be used for AC measurements. 4. Use isolated supply for the CRO. 5. Use attenuation probe for high voltage measurements in CRO.
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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CONTENTS
Sl.No. Name of the experiment Page No.
1. VI CHARACTERISTICS OF SCR 2
2. VI CHARACTERISTICS OF TRIAC 8
3. VI CHARACTERISTICS OF MOSFET
14
4. VI CHARACTERISTICS OF IGBT
20
5. TRANSIENT CHARACTERISTICS OF MOSFET AND SCR
24
6. SINGLE PHASE AC TO DC FULLY CONTROLLED CONVERTER
30
7. SINGLE PHASE AC TO DC HALF CONTROLLED CONVERTER
36
8. STEP DOWN MOSFET BASED CHOPPER
42
9. STEP UP MOSFET BASED CHOPPER
46
10. IGBT BASED SINGLE PHASE PWM INVERTER 50
11. SERIES RESONANT DC-DC CONVERTER (ZERO CURRENT SWITCHING)
56
12. PARALLEL RESONANT DC-DC CONVERTER (ZERO VOLTAGE SWITCHING)
60
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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TRANSIENT CHARACTERISTICS OF MOSFET AND SCR
CIRCUIT DIAGRAM: FOR MOSFET
MATLAB CIRCUIT FOR MOSFET
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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TRANSIENT CHARACTERISTICS OF MOSFET AND SCR
AIM: (i) Obtain and explain both turning ‘ON’ and turn ‘OFF’ characteristics of
given SCR (ii) Obtain and explain both turning ‘ON’ and turn ‘OFF’ characteristics of
given MOSFET.
APPARATUS REQUIRED: S.No. Blocks Type Items Quantity
1 Simulink i. Sink Scope 1
ii. Source Pulse Generator 1 2 Sim power system
i. Measurements MC Ammeter 1 MC Voltmeter 1
ii. Elements - RLC series branch 1 iii. Power electronics - MOSFET 1
- SCR 1 iV. Electrical source - DC source 1
PROCEDURE: FOR MOSFET
1. Open MATLAB and open Simulink then create a new file (new module) 2. Connections are made as per the circuit diagram by taking the required items
from the corresponding blocks. 3. According to the MOSFET, we should give the block parameter for MOSFET,
RLC series branch, pulse generator and the scope. 4. Now simulate the circuit. The graph of Gate pulse, Drain current and drain to
source voltage can be shown. 5. Finally the print out of the MATLAB circuit and the output is taken.
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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FOR SCR
MATLAB CIRCUIT FOR SCR
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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FOR SCR
1. Open MATLAB and open Simulink then create a new file (new module) 2. Connections are made as per the circuit diagram by taking the required items
from the corresponding blocks. 3. According to the SCR, we should give the block parameter for SCR, RLC series
branch, pulse generator and the scope. 4. Now simulate the circuit. The graph of Gate pulse, Anode current and anode to
cathode voltage can be shown. 5. Finally the print out of the MATLAB circuit and the output is taken.
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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MODEL GRAPH: FOR MOSFET
FOR SCR
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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INFERENCE: DISCUSSION QUESTIONS: 1. What is MATLAB? 2. What is a transient characteristic? 3. What is commutation? 4. Where the natural commutation is not possible in SCR? 5. What is the function of scope in MATLAB? RESULT:
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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SINGLE PHASE AC TO DC FULLY CONTROLLED CONVERTER
CIRCUIT DIAGRAM FOR R LOAD
Model graph for R Load (αααα = 30°°°°, R=100ΩΩΩΩ)
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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SINGLE PHASE AC TO DC FULLY CONTROLLED CONVERTER
AIM: (i) To study the operation of single phase fully controlled bridge converter with R
and R-L loads for continuous and discontinuous conduction modes. (ii) Also find the performance parameters (Rectification efficiency, form factor,
peak inverse voltage and ripple factor)
APPARATUS REQUIRED: S.No. Name of the item Type Range Quantity
1 1 ϕ SCR bridge module TYN612 600V,12A 1 2 SCR Triggering Kit - - 1 3 Ammeter MC (0-500) mA 1 4 Voltmeter MC (0-30) V 1 5 CRO - - 1 6 CRO Brobe - - 1 7 Patch Cards - - 10
FORMULA USED:
For R load 1. Average dc output voltage Vdc is )cos1( απ += m
dcVV
2. RMS output voltage is Vrms 21
22sin
21
+−= ααππmrms VV
For R-L load continuous conduction: 1. Average dc output voltage Vdc is απ cos2 m
dcVV =
2. RMS output voltage Vrms is sm
rms VVV == 2
For RL load discontinuous conduction: 3. Average dc output voltage Vdc is )cos(cos βαπ −= m
dcVV
4. RMS output voltage Vrms is 21
2
22sin
22sin
2
+−−= αβαβπm
rmsVV
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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CIRCUIT DIAGRAM FOR R-L LOAD
Model graph for R-L Load with continuous conduction
(αααα = 30°°°°, R=100ΩΩΩΩ, L=200mH)
Model graph for R-L Load with discontinuous conduction
(αααα = 90°°°°, R=100ΩΩΩΩ, L=200mH)
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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General Formula: 5. Rectification efficiency 2
2%
rms
dcVV
=η
6. Form factor dc
rmsVVFF =
7. Peak inverse voltage mVPIV = 8. Ripple factor 12 −= FFRF
Where mV = maximum or peak voltage in volts = sV2 sV = Supply voltage in volts
α = Firing angle β = Extinction angle γ = Conduction angle = β -α
Procedure:
1. Connections are made as per the circuit diagram for R load 2. Switch on the triggering kit 3. Switch on the 230 V AC supply 4. Switch on the debounce logic 5. By varying potentiometer vary the firing angle of the converter in order to vary the
output voltage step by step. 6. For each step note down the firing angle, output voltage and load current. 7. The output voltage is theoretically calculated for each step and the readings are
tabulated. 8. Repeat the same procedure for RL load.
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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Tabulation for R load:
Vs= R=
S.No. Firing Angle αααα in degree
Idc Measured in milliamps
Vdc Measured in volts
Vdc Calculated in volts
Vrms Calculated in volts
Tabulation for RL load:
Vs= R= L= ββββ=
S.No. Firing Angle αααα in degree
Idc Measured in milliamps
Vdc Measured in volts
Vdc Calculated in volts
Vrms Calculated in volts
Continuous conduction
Discontinuous conduction
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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INFERENCE: DISCUSSION QUESTIONS:
1. What is inversion mode of operation? 2. When we connect a freewheeling diode in full converter, what will be the output? 3. Why the inversion mode is not possible in semi converter? 4. Why the power factor of full converter is lower than semi converter? 5. What isα,β,γ and µ?
RESULT:
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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SINGLE PHASE AC TO DC HALF CONTROLLED CONVERTER
CIRCUIT DIAGRAM FOR R LOAD
Model graph for R Load (αααα = 30°°°°, R=100ΩΩΩΩ)
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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SINGLE PHASE AC TO DC HALF CONTROLLED CONVERTER
AIM:
(i) To study the operation of single phase semi converter with R and R-L loads for continuous and discontinuous conduction modes.
(ii) Also find the performance parameters (Rectification efficiency, form factor, peak inverse voltage and ripple factor)
APPARATUS REQUIRED: S.No. Name of the item Type Range Quantity
1 SCR module with protection TYN612 600V,12A 2 2 Diode module with protection BY126 - 3 3 SCR Triggering Kit - - 1 4 Battery - 12V 1 5 Ammeter MC (0-500) mA 1 6 Voltmeter MC (0-30) V 1 7 CRO - - 1 8 CRO Brobe - - 1 9 Patch Cards - - 10
FORMULA USED:
For R and RL load continuous & discontinuous conduction: 1. Average dc output voltage Vdc is )cos1( απ += m
dcVV
2. RMS output voltage is Vrms 21
22sin
21
+−= ααππmrms VV
General Formula: 3. Rectification efficiency 2
2%
rms
dcVV
=η
4. Form factor dc
rmsVVFF =
5. Peak inverse voltage mVPIV = 6. Ripple factor 12 −= FFRF
Where mV = maximum or peak voltage in volts = sV2 sV = Supply voltage in volts
α = Firing angle β = Extinction angle
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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γ = Conduction angle = β -α CIRCUIT DIAGRAM FOR R-L LOAD
Model graph for R-L Load with continuous conduction
(αααα = 30°°°°, R=100ΩΩΩΩ, L=100mH)
Model graph for R-L Load with discontinuous conduction
(αααα = 90°°°°, R=100ΩΩΩΩ, L=100mH)
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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Procedure:
1. Connections are made as per the circuit diagram for RL load 2. Switch on the triggering kit 3. Switch on the 230V AC supply 4. Switch on the debounce logic 5. By varying potentiometer vary the firing angle of the converter in order to vary the
output voltage step by step. 6. For each step note down the firing angle, output voltage and load current. 7. The output voltage is theoretically calculated for each step and the readings are
tabulated. 8. Repeat the same procedure for RL load.
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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Tabulation for R load:
Vs= R= S.No. Firing Angle
αααα in degree Idc Measured in milliamps
Vdc Measured in volts
Vdc Calculated in volts
Vrms Calculated in volts
Tabulation for RL load: S.No. Firing Angle
αααα in degree Idc Measured in milliamps
Vdc Measured in volts
Vdc Calculated in volts
Vrms Calculated in volts
Continuous conduction
Discontinuous conduction
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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INFERENCE: DISCUSSION QUESTIONS: 1. What is power electronics? 2. What are the types of converter in power electronics? 3. What is firing angle? 4. What is active load? 5. Why the negative voltage is not possible in semi converter? 6. What is freewheeling diode? 7. Is a separate freewheeling diode necessary for semi converter? Justify your answer. RESULT:
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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STEP DOWN MOSFET BASED CHOPPER
CIRCUIT DIAGRAM
MODEL GRAPH
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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STEP DOWN MOSFET BASED CHOPPER
AIM: To study the waveform for MOSFET based step down chopper for different load
for continuous and discontinuous conduction modes. APPARATUS REQUIRED: S.No. Name of the item Type Range Quantity
1 MOSFET Module IRF 840 - 1 2 Ammeter MC (0-500mA) 1 3 Voltmeter MC (0-30V) 1 4 Rheostat - - 1 5 RPS - (0-30V) 1 6 CRO - - 1 7 CRO Probe - - 1 8 Patch cards - - -
FORMULA USED:
1. Average dc output voltage Vdc is sdc VV δ= 2. RMS output voltage Vrms is srms VV δ= Where: δ = Duty cycle of the chopper T
TON=δ TON = on time T = Total time
Procedure:
1. Connections are made as per the circuit diagram. 2. Switch on the RPS and turn on triggering kit 3. Switch on the debounce logic 4. By changing the width of the pulse, obtain the different set of reading. 5. For each step note down the duty cycle, output voltage and load current and
tabulate it. 6. The output voltage is theoretically calculated. 7. Draw the graph as per the reading in the table.
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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TABULATION: Vs= T=
S.No. TON
in ms δδδδ = TTON Idc (Avg)
Measured in mA
Vdc (Avg) Measured
in volts
Vdc (Avg) Calculated
in volts sdc VV δ=
1 2 3 4 5
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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INFERENCE: DISCUSSION QUESTIONS:
1. What is chopper and what are the devices generally used for chopper? 2. What are the types of chopper? 3. What is step down chopper? 4. What are the control strategies used for choppers? 5. Why frequency modulation is not preferred mostly? 6. Why thyristor is not preferred in chopper circuit mostly?
RESULT:
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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STEP UP MOSFET BASED CHOPPER
CIRCUIT DIAGRAM:
Model graph for step up operation
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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STEP UP MOSFET BASED CHOPPER
AIM:
To study the waveform for MOSFET based step up chopper for different load for continuous and discontinuous conduction modes. APPARATUS REQUIRED: S.No. Name of the item Type Range Quantity
1 MOSFET Module IRF 840 - 1 2 Ammeter MC (0-500mA) 1 3 Voltmeter MC (0-30V) 1 4 Rheostat - - 1 5 RPS - (0-30V) 1 6 Diode Py 127 - 1 7 Inductor Ferrite core 100mH 1 8 CRO - - 1 9 CRO Probe - - 1
10 Patch cards - - - FORMULA USED:
Average dc output voltage Vdc is ( )δ−= 1
sdc
VV Where: δ = Duty cycle of the chopper T
TON=δ TON = on time T = Total time
PROCEDURE:
1. Connections are made as per the circuit diagram 2. Switch on the RPS and turn on triggering kit 3. Switch on the debounce logic 4. By changing the width of the pulse, obtain the different set of reading. 5. For each step note down the duty cycle, output voltage and load current and
tabulate it. 6. The output voltage is theoretically calculated for each step. 7. Draw the graph as per the reading in the table.
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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TABULATION:
Vs= T=
S.No. TON
in ms δδδδ = TTON Idc (Avg)
Measured in mA
Vdc (Avg) Measured
in volts
Vdc (Avg) Calculated
in volts
( )δ−= 1s
dcVV
1 2 3 4 5
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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INFERENCE: DISCUSSION QUESTIONS:
1. What is chopper and what are the devices generally used for chopper? 2. What are the types of chopper? 3. What is step up chopper? 4. What are the control strategies used for choppers? 5. Why frequency modulation is not preferred mostly? 6. Why thyristor is not preferred in chopper circuit mostly?
RESULT:
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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IGBT BASED SINGLE PHASE PWM INVERTER
CIRCUIT DIAGRAM
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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IGBT BASED SINGLE PHASE PWM INVERTER
AIM:
To study the operation of single-phase bridge inverter with sinusoidal pulse width modulation with R load. APPARATUS REQUIRED: S.No. Name of the item Type Range Quantity
1 IGBT Module - - 1 2 Inverter control module - - 1 3 CRO - - 1 4 Ammeter MI (0-5A) 1 5 Voltmeter MI (0-300V) 1 6 Patch cards - - -
FORMULA USED:
1. Modulation index (m) is m = Ar / Ac 2. Output voltage V0 = m Vs
Where
Ar = Amplitude of reference signal Ac = Amplitude of carrier signal Vs = Source voltage
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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Model graph
Sinusoidal Pulse width modulation
Voltage and current waveforms
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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Precaution:
1. Check whether AC main switch is off condition in both the trainer. 2. Check whether control module mode selector switch is in first position (Sine
wave). 3. Check whether control module pulse release switch SW4 in control module is off
position. 4. Check whether 24V AC switch is in off position.
Procedure: 1. Make the connection as per the circuit diagram. 2. Switch on the AC main in both the trainer. 3. Measure the amplitude and frequency of sine wave and carrier triangular wave
and tabulate it. Also adjust sine wave frequency to 50Hz. 4. Connect CRO probe to observe the load voltage and load current waveform. 5. Release the switch SW4 in the inverter control module and switch SW1 in the
IGBT power module. 6. Measure the output voltage. 7. Using the amplitude POT to vary step by step, for each step note down the
amplitude and frequency of sine wave and triangular waveform and also measure the output voltage and tabulate it.
8. Then find the theoretical output voltage by using the formula.
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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Tabulation:
Vs=
S.No. Amplitude of carrier triangular
wave (Ac) in volts
Amplitude of
reference sine wave
(Ar) in volts
Modulation index
m= Ar/Ac
I0 Measured in Amps
V0 Measured in Volts
V0 Calculated
in Volts V0 = m X Vs
1 2 3 4 5 6
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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INFERENCE: DISCUSSION QUESTIONS:
1. What is inverter? 2. Why we go for PWM? 3. What are the different types of PWM? 4. What is modulation index and what are the types? 5. What are the advantages of IGBT?
RESULT:
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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SERIES RESONANT DC-DC CONVERTER
(ZERO CURRENT SWITCHING)
CIRCUIT DIAGRAM:
MODEL GRAPH:
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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SERIES RESONANT DC-DC CONVERTER
(ZERO CURRENT SWITCHING) AIM:
To determine the voltage and current wave form of series resonant dc-dc converter (Zero current switching).
APPARATUS REQUIRED: S.No. Name of the item Type Range Quantity
1 Resonant converter module VPET-315 - 1 2 Ammeter MC (0-2) A 1 3 Voltmeter MC (0-30) V 1 4 CRO - - 1 5 CRO Brobe - - 1 6 Patch Cards - - 10
FORMULA USED: Frequency Tf 1= Hz Where: T= Time f = Frequency PRECAUTIONS:
Initially keep the frequency adjustment POT in minimum position PROCEDURE:
1. Connections are made as per the circuit diagram. 2. Initially keep frequency adjustment POT in minimum position. 3. Switch on the main supply 4. Connect the “P” Pin connector from PWM output and PWM input\ 5. Connect the banana connector P10 to P4 , P8 to P11 6. Connect the current sensing resistor (1Ω / 20 W) across the banana connector P2
to P3. 7. The voltmeter is connected across P5 and P12
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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TABULATION:
S.No. Time (ms) Switching Frequency
(KHz) Output
Voltage (V) Output
Current (A) 1 2 3 4 5
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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8. Connected the R load across P5 and P12 through ammeter. 9. Adjust the frequency POT and set switching frequency 40KHz. 10. Connect the CRO across the connector T1 (+) and ground. Another channel is
connected to P2 (+), P3 (-) 11. Now observe the switch voltage and current wave. 12. Similarly observe the switch voltage and current waveform for various switching
frequency. INFERENCE: DISCUSSION QUESTIONS: 1. What is resonance? 2. What is the condition for resonance? 3. What are the advantages of resonant converter? 4. What is soft switching? 5. What types of resonant converter? 6. What is zero current switching? 7. What is zero voltage switching? RESULT:
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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PARALLEL RESONANT DC-DC CONVERTER
(ZERO VOLTAGE SWITCHING) CIRCUIT DIAGRAM:
MODEL GRAPH:
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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PARALLEL RESONANT DC-DC CONVERTER
(ZERO VOLTAGE SWITCHING)
AIM:
To determine the voltage and current wave form of parallel resonant dc-dc converter (Zero voltage switching).
APPARATUS REQUIRED: S.No. Name of the item Type Range Quantity
1 Resonant converter module VPET-315 - 1 2 Ammeter MC (0-2) A 1 3 Voltmeter MC (0-30) V 1 4 CRO - - 1 5 CRO Brobe - - 1 6 Patch Cards - - 10
FORMULA USED: Frequency Tf 1= Hz Where: T= Time f = Frequency PRECAUTIONS:
Initially keep the frequency adjustment POT in minimum position PROCEDURE:
1. Connections are made as per the circuit diagram. 2. Initially keep frequency adjustment POT in minimum position. 3. Switch on the main supply 4. Connect the “9” Pin connector from PWM output and PWM input\ 5. Connect the banana connector P10 to P4, P8 to P11 6. Connect the current sensing resistor (1Ω / 20 W) across the banana connector P2
to P3. 7. The voltmeter is connected across P5 and P12
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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TABULATION:
S.No. Time (ms) Switching Frequency
(KHz) Output
Voltage (V) Output
Current (A) 1 2 3 4 5
EE1303-Power Electronics Lab Manual
Muthayammal Engineering college, Rasipuram.
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8. Connected the R load across P5 and P12 through ammeter. 9. Adjust the frequency POT and set switching frequency 40KHz. 10. Connect the CRO across the connector T1 (+) and ground. Another channel is
connected to P2 (+), P3 (-) 11. Now observe the switch voltage and current wave. 12. Similarly observe the switch voltage and current waveform for various switching
frequency. INFERENCE: DISCUSSION QUESTIONS: 1. What is resonance? 2. What is the condition for resonance? 3. What are the advantages of resonant converter? 4. What is soft switching? 5. What types of resonant converter? 6. What is zero current switching? 7. What is zero voltage switching? RESULT: