Fuzzy logic controlled Doubly Fed Induction Generator (DFIG) for Wind Energy Conversion System using MATLAB

This paper presents the operation of doubly fed induction generator (DFIG) with Fuzzy Logic Control & an integrated active filter capabilities using grid-side converter (GSC). The main contribution of this work lies in the control of GSC using Fuzzy Logic Control (FLC) for supplying harmonics in addition to its slip power transfer. The rotor-side converter (RSC) is used for attaining maximum power extraction and to supply required reactive power to DFIG. This wind energy conversion system (WECS) works as a static compensator (STATCOM) for supplying harmonics even when the wind turbine is in shutdown condition. Control algorithms of both GSC and RSC are presented in detail. The proposed FLC based DFIG-based WECS is simulated using MATLAB/Simulink. A prototype of the proposed FLCDFIG based WECS is developed in MATLAB/SIMULINK environment .Simulated results are validated with test results of the developed FLC based DFIG for different practical conditions, such as variable wind speed and unbalanced/single phase loads.