5EE9 POWER ELECTRONICS LAB-I
 

1. Study the characteristics of SCR: Observe the terminal configuration, Measure the breakdown voltage,Measure latching and holding current and V-I characteristics.

2. Study the different triggering circuits for SCR: R-triggering circuit,R-C triggering circuit and UJT triggering circuit.

3. Study the firing circuit for single-phase converters using ramp comparator scheme.

4. Study the firing circuit for single-phase converters using cosine wave comparator scheme.

5. Study the firing circuit for single-phase converters using op-amps and gates.

6. Study and obtain the characterstics of Diac.

7. Study and obtain the waveforms for single-phase half wave controlled converter.

8. study and obtain the wave forms for single-phase fully controled bridge converter.

9. Study and show the effect of freewheling diode in single-phase fully controlled bridge converter.

10. Study and obtain the waveforms for voltage-commutated chopper.

11. Study and obtain the waveforms for current-commutated chopper.

RECOMMENDED BOOKS.

1. O.P Arora power Electronics Labroratory-Experiments and Organization,wheeler publishing house,1993.

2. P B Zbar:Industrial Electronics-A Text-Lab Manual,2nd Ed., Dhanpat Rai and company,New Delhi,1998.