Gujarat Technological University 2011-6th Sem B.E Electrical Engineering Power Electronics-2 , - Question Paper

* Gujarat Technological university
* Power electronics-2
* 2011

Q-1(a) discuss Half & full bridge topology of inverter.[Mark 07]
(b) discuss 3-phase inverter operation 180 mode.[Mark 07]

Q-2(a) Comparison : current souce inverter & voltage souce inverter.[Mark 07]
(b) What is PWM? discuss SPWM technique.[Mark 07]
*OR*
(b) discuss space vector pulse modulation technique.

Q-3(a) discuss 3-phase inverter operation 120 mode.[Mark 07]
(b) discuss basic principle of cycloconverter with circuit diagram and waveform.[Mark 07]
*OR*

Q-3(a)Explain three phase to single phase cycloconverter.
(b)Explain the basics of Matrix converter.

Q-4(a) Comparison : ON/OFF control & phase control of AC voltage controller[Mark 07]
(b) discuss fullwave controller with R-L load with waveform. [Mark 07]

Q-5(a) discuss V/f control induction motor drives, with merits & demerits.[Mark 07]
(b) discuss method of rotor resistance control using static device for wound rotor motor.[Mark 07]
*OR*
Q-5(a)Explain stator voltage control of induction motor drives
(b)Explain Mcmurray inverter with every mode of operation. provide its limitation.

Earning:   Approval pending.