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APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
SECOND SEMESTER M.TECH DEGREE EXAMINATION, MAY 2016
Electrical and Electronics Engineering
(Power Control and Drives)
OIEE6518 Power Electronics for Renewable Systems
Max. Marks: 60 Duration: 3 Hours

Answer any two Full questions from each part

Part A
1. a. Explain the Environmental aspects of electric energy conversion (4)
b. Explain the impacts of renewable energy generation on environment (5)

2. Explain in detail with neat sketches the principle of operation of the following energy
options as applied for stand alone systems.

a. Biomass (4)
b. Hydrogen energy systems (5)
3. Explain with neat circuit diagram and waveforms explain the principle of (9)
operation of SCIG
Part B

4. Explain in detail with neat circuit diagrams the following power converters used in

grid integration of renewable energy sources

a. Uncontrolled rectifier (4)

b. Matrix converter (5)
5. a. Explain the various type of power converters used in solar photo voltaic (5) system
b. Draw and explain MPPT of a solar cell (4) 6. a. With neat block diagram explain the
working of solar photo voltaic system (5)
b. Explain the terms related to wind power analysis (4)
1) Coefficient of Performance, Cp 11)
Tip speed ratio, %

Also draw the analysis graphs relating the above parameters