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Control of wind turbine based on DFIG using Fuzzy-PI and Sliding Mode controllers

This paper presents the study of a wind energy conversion system (WECS) based on a doubly fed induction generator (DFIG) connected to electric power grid. The performances (reference tracking and robustness) of classical Proportional-Integral (PI), Fuzzy-PI and Sliding Mode (SM) controllers are compared with respect to the wind speed fluctuation and the impact on the produced energy quality. Moreover, direct vector control with stator flux orientation of the DFIG is used to control the active and reactive powers between the stator and the grid. The performances of the system were analyzed and compared by simulation using Matlab/Simulink/SimPower Systems.