DocumentCode :
1894208
Title :
Maximum power extraction in grid connected DFIG using multilevel inverter
Author :
Sankar, Ravi ; Rajarajan, R. ; Aravindan, P. ; Shobana, S.
Author_Institution :
Dept. of EEE, SKR Eng. Coll., Chennai, India
fYear :
2012
fDate :
13-15 Dec. 2012
Firstpage :
411
Lastpage :
416
Abstract :
Wind energy is the most promising renewable among all other renewable and hence successful integration of wind to the grid will certainly a better option. Double fed induction generator (DFIG) technology allows extracting maximum energy from the wind, while operating in narrow speed ranges. It has the ability for power electronic converters to generate and absorb reactive power. A three-level back-to-back AC-DC-AC converter used in the system. This analysis is based on reduction of the maximum common mode voltage levels of the rotor side converter which plays the key role in shaft voltage generation of the DFIG. The advantages of proposed method are: voltage balancing of DC link capacitors and controlling of the active and reactive power delivered by the wind generator. The proposed DFIG with multilevel inverter aims at integrating winds farms even in weaker grid with improved Maximum power injection, Minimum harmonic issues with reduced impact on WTG. The proposed method, will improve the power quality which is delivered to the grid in terms of harmonic, inject the maximum power to the grid and improve the voltage profile.
Keywords :
AC-DC power convertors; DC-AC power convertors; asynchronous generators; invertors; power capacitors; power grids; power supply quality; reactive power control; wind power plants; wind turbines; DC link capacitors; WTG; active power control; double fed induction generator technology; grid connected DFIG; maximum common mode voltage levels; maximum energy extraction; maximum power extraction; maximum power injection; multilevel inverter; narrow speed ranges; power electronic converters; reactive power; reactive power control; rotor side converter; shaft voltage generation; three-level back-to-back AC-DC-AC converter; voltage balancing; voltage profile; wind energy; wind generator; winds farms; Carrier based PWM; DFIG; Harmonic Analysis; LC filters; Multilevel Inverter; Wind Turbine;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Emerging Trends in Electrical Engineering and Energy Management (ICETEEEM), 2012 International Conference on
Conference_Location :
Chennai
Print_ISBN :
978-1-4673-4633-7
Type :
conf
DOI :
10.1109/ICETEEEM.2012.6494481
Filename :
6494481
Link To Document :
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