Improvement In Active Filter Capabilities Of Doubly Fed Induction Generator Using Fuzzy Logic Controller

Abstract

This paper deals with improvement in Doubly Fed Induction Generator (DFIG) by using FLC based on control of Grid-Side Converter (GSC).GSC does mainly two things which is are very useful to the system to maintain stability: One is Slip power transfer and the other is supply of harmonics which is useful to mitigate the harmonics produced due to nonlinear loads at PCC. The Rotor-Side Converter (RSC) mainly does the power extraction which is called MPPT (Maximum Power Point Tracking) and also for supplying sufficient reactive power to DFIG. In this paper, FLC is used instead of using other controllers because it is best acceptable for the animal controlling mechanism, accouterment the operation of making decisions with experts. This Wind Energy Conversion Arrangement (WECS) acts as a STATCOM for giving harmonics, even though wind turbine not able to operate/shutdown condition. GSC and RSC control algorithms are explained in brief. The DFIG which is based on WECS is explained using the MATLAB/Simulink. By application of FLC for a nonlinear arrangement allows reducing the uncertain effects developed at nonlinear loads also improves the efficiency. The control action for DFIG based WECS is analyzed by simulation results.