EE6503 [Old Code: EE2301] POWER ELECTRONICS April May 2015 Question Paper

Looking for EE6503 POWER ELECTRONICS old question papers ? You will find here one which was asked in the year April May 2015 for B.E EEE examinations by Anna University Chennai. Its subject code was EE2301. Get more details below

Anna University Chennai
B.E / B.Tech. DEGREE EXAMINATION APRIL / MAY 20215
Fifth Semester
Electrical and Electronics Engineering
EE2301 / EE 51 / 10133 EE504 / 10144 / EE 504 - POWER ELECTRONICS
(Common to Instrumentation and Control Engineering)
(Regulation 2008/2010)
(Common to PTEE 2301110144 EE 504 Power Electronics for B.E. (Part-Time) Fourth Semester - Electrical and Electronics Engineering - Regulation 2009/2010)
Time: Three hours
Maximum: 100 marks

Answer ALL questions.
PART A - (10 x 2 = 20 marks)
1. Draw TRIAC characteristic.
2. Draw switching times characteristic of BJT.
3. What is the effect of source impedance on the performance of converter?
4. Draw circuit and waveform of ideal dual converter.
5. What is time ratio control in DC to DC converter.
6. Define current limit control in DC to DC converter.
7. What is Harmonic elimination by PWM?
8. Draw the circuit diagram and waveform of single phase current source inverter
9. Draw matrix converter circuit.
10. What is the principle of ON- OFF control of AC controller?

PART B - (5 x 16 = 80 marks)

11. (a) Explain with circuit IGBT static I-V ,transfer and turn-on and turn - off characteristics. (16)
Or
(b) Describe switching model, equivalent circuit and switching wave-forms and times of MOSFET. (16)

12. (a) Explain with circuit and output wave form working of single phase two pulse fully controlled converter with RL load discontinuous current mode of operation. (16)
Or
(b) With neat sketch describe voltage and current wave-forms of a circulating current type dual converter. (16)

13. (a) Describe with basic circuit and waveform the principle of operation step up converter. ( 16)
Or
(b) With neat sketch explain operation of Buck - boost converter with its wave for Continuous current mode of operation. ( 16)

14. (a) Explain with waveform of three phase inverter for 180° conduction of each thyristor. (16)
Or
(b) Explain with waveform multiple pulse modulation inverter. (16)

15. (a) Explain with circuit and waveform principle of phase control of single phase controller with RL load and obtain expression for voltage and power factor. (16)
Or
(b) Explain operating principle of single phase to single phase cycloconverter with continuous and discontinuous load current with circuit and wave form. (16)

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