power electronics lab manual
TRANSCRIPT
Shree Balaji Electronics
POWER ELECTRONICS LAB
1.VI Characteristics of SCR, TRIAC & MOSFET
2.To measure the latching and holding current of a SCR
Feature:-
SPECIFICATION FRONT PANEL DETAILS:
1. Power :: Mains ON/OFF switch with indicator
2. Devices :: 6A/600V SCR,TRIIAC & MOSFET
3. Power Supply :: 0-15V/250mA,, 0-35V/500mA
4.Load :: 2.5K OHMS/25W
5. Digital Meters :: 0-20mA/0-20V, 0-200V, 0-2 A
6. Protection :: Fuse, Heat sink
EXPERIIMENT
� To draw static characteristics off SCR,, TRIIAC & MOSFET
� To measure the latching and holding current off a SCR
3.Study of the V-I characteristics of UJT
Features:-
SPECIFICATIONS/FRONT PANEL DETAILS:
1. Power :: Mains ON/OFF switch with indicator
2. Devices :: 8A/600V MOSFET,IIGBT
3.Power Supply :: 0-15V/250mA,0-35V/500mA
4. Load :: 2.5K OHMS/25W
5.Digital Meters:: 0-20V for VE,0-200V for VBB,, 0-200mA for IE
6.Protection :: Fuse, Heat sink
EXPERIIMENT
� To draw static characteristics off UJT
4. (a) Study of the synchronized UJT triggering circuit.
SPECIFICATION/FRONT PANEL DETAILS
1. Power :: Mains ON/OFF switch with indicator
2.Devices :: 4A/400V SCR
3. Power Supply :: 0-12V/1A, AC
4. Load :: 100OHMS/10W
5.Circuit : Line synchronized UJT relaxation oscillator circuit
6. Protection :: Fuse , Heat sink
EXPERIIMENT
� To construct SCR HWR//FWR using UJT Triggering
4. (b) Study of the cosine controlled triggering circuit
SPECIIFIICATIIONS FRONT PANEL DETAIILS
1. Power :: Mains ON/OFF switch with indicator
2.Devices :: 16A/1200V SCR
3. Power Supply :: 0--12V/1A,, AC
4. Load :: 100OHMS/10W
5. Circuit:: Line synchronized cosine Triggering circuit
6. Protection :: Fuse,, Heat sink
EXPERIIMENT
� To construct SCR Rectifier using cosine Triggering
5. Study of the single phase half wave controlled rectifier and semi converter
circuit with R and R-L Load
Isolation Transformer L Load
1Ph half bridge firing unit
SPECIIFIICATIIONS//FRONT PANEL DETAIILS
Power Circuit :: 5A//250V
1.Devices :: 25A/1200V SCRs – 2No, Diode 3 No
2. Protection:: 6A MCB, 5A Fuses, Heat sink, Snubber ckts
3. Meters :: 5A Ammeter, 300V voltmeter
Firing Circuit
1. Power :: Mains ON/OFF switch with indicator
2.Gate pulses :: Two isolated Gate pulses
3.Testing points :: Four testing points
4. Firing Angle :: 0--180 through potentiometer
Input Source :: Through suitable isolation transformer
Loads :: Works with Suitable R, RL, Motor loads
1Ph half bridge Power Ckts
Experiments
� Single phase half wave controlled rectifier and semi converter circuit with R and R--L Load
6. Study of single phase full wave controlled rectifier circuits (mid point and
Bridge type) with R and R-L Load
1Ph Full bridge firing unit 1Ph Full bridge Power Ckts
SPECIIFIICATIIONS FRONT PANEL DETAIILS
Power Circuit :: 5A/250V
1. Devices :: 25A/1200V SCR – 4Noss,Diode 1 No
2. Protection :: 6A MCB, 5A Fuses , Heat sink
3. Meters :: 5A Ammeter, 300V voltmeter
L Load Isolation Transformer
Firing Circuit
1. Power :: Mains ON/OFF switch with indicator
2. Gate pulses :: Four isolated Gate pulses
3. Testing points :: Four testing points
4.Firing Angle :: 0--180 through potentiometer
Input Source :: Through suitable isolation transformer
Loads :: Works with Suitable R,RL, Motor loads
Experiments
� Single phase fully wave controlled rectifier circuits (mid point and Bridge type) with R and R--L Load
7. Study of three phase full wave controlled rectifier circuits (Full and Semi converter) with R and R-L Load
3Ph half/fully controlled bridge firing unit 3Ph half/fully controlled bridge Power Circuit
L Load Isolation transformer
SPECIFICATION FRONT PANEL DETAIILS
Power Circuit :: 5A/430V
1. Devices : 25A/1200V Scars – 6Noss, Diode 4 No
2. Protection:: 6A MCB, 5A Fuses, Heat sink, Snubber
3.Meters :: 5A Ammeter, 500V voltmeter
Firing Circuit
1. Power :: Mains ON/OFF switch
2. Gate pulses :: Six isolated Gate pulses
3. Testing Points :: Eight testing points
4. Firing Angle :: 0--180 through potentiometer
Input Source
:: Through suitable isolation transformer
Loads :: Works with Suitable R,, RL,, Motor loads
Experiments
� Three phase full wave half/fully controlled rectifier circuits with R and R-L Load ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Plot No-1775, 3rd Lane, Chintamaniswar, Bhubaneswar-751006 Phone: 0674-2314422, 6451025.Mob-09861445071 E-mail:[email protected], [email protected], www.shreebalajiedu.com
8. Study of the forward converter (Buck converter) and fly back converter (boost converter) operation.
SPECIFICATION FRONT PANEL DETAIILS:: 1. Power :: Mains ON/OFF switch with indicator
2. Devices:: 16A/800V MOSFET--1Nos,
16A/1200V Diodes--2Nos
3. Inductor :: 100 mH
4. Capacitor :: 4..7 µF
5. Protection :: Fuse,, Heat sink,, Snubber ckts
6.Frequency :: 25Hz--100Hz
7. Duty cycle :: 10% to 90%..
8. Gate signals :: One isolated gate signals
EXPERIIMENT
� To construct & to study forward converter and
fly back converter
9. Study of the single phase PWM voltage source inverter.
SPECIFICATION
1. Devices :: 30A/1200V IGBT-4Nos, Diodes-
4Nos
2. DC Supply :: 0--200V Variable DC power
supply
3. Gate pulses :: Four isolated Gate pulses
4. Frequency :: 20 Hz to 50 Hz
5. Modulation :: Sinusoidal modulation 0-100%
index
6. Display :: For modulation index & frequency
7. Load :: Works with R,, RL & Motor load
10. Study the performance of three phase VSI with PWM control.
SPECIFICATIONS FRONT PANEL DETAIILS
1.Power :: Mains ON//OFF switch with indicator
2. Devices:: 30A/1200V IGBTs-6Nos, 16A/1200V
Diodes--6Nos
3.DC Supply :: 0-200V Variable DC power supply
4. Gate pulses :: Six isolated Gate pulses
5. Testing Points :: Six testing points
6. Frequency :: 20 Hz to 50 Hz
7.Load :: Works with R,, RL & Motor load
Experiments
� To construct & to study three phase VSI with PWM
controls.
11. Study the performance of single phase AC Voltage controller with R and R-L Load
SPECIFICATION FRONT PANEL DETAIILS
1. Power Device :: 16A/1200V TRIIAC – 1Nos,,
2.Protection :: Fuses, Heat sink,, Snub err ckts
3. Power :: Mains ON/OFF switch with indicator
4. Firing Circuit :: Line synchronized Triggering circuit
5. Firing Angle :: 0-1800 through potentiometer
6. Gate pulses :: Two isolated Gate pulse
7. Testing Points :: Six testing points
Input Source
:: Through built-in 24V isolation transformer
Loads :: Works with R,, RL load
Experiments
� AC Voltage controller with R and R-L Load
12. Study of the resonant inverter.
1. Power :: Mains ON/OFF switch with indicator
2. Devices :: 16A/1200V SCR-2Nos
3.Inductor :: 100-0-100 mH
4.Capacitor :: 4.7 µF-2Nos
5. Protection :: Fuse, Heat sink,Snub err ckts
6. Frequency :: 25Hz-100Hz
7.Gate signals :: Two isolated gate signals
Experiments
� To construct & to study Resonant Inverter