Fuzzy Logic Control for Wind Energy Conversion System based on DFIG

This paper concentrates on fuzzy logic control (FLC) of variable speed wind turbines with doubly fed induction generator(DFIG). The wind energy conversion system (WECS) is equipped with a wind turbine, a mechanical transmission system, a DFIG, a Rotor Side converter (RSC), a Grid Side converter (GSC), and a common DC-link capacitor. The main objective is to regulate the active power by extracting the maximum of power and to have a null stator reactive power. In this study, four FLC are implemented separately in RSC, GSC, DC bus voltage, and the maximum power point tracking (MPPT). The performances of the proposed controllers have been tested and compared with a PI controller. The obtained results show a satisfactory performance in terms of stability, precision, and robustness under variable wind speed conditions.