Hybrid control law for maximum power point tracking in variable-speed wind generation

In using of fuzzy logic supervisor an hybrid controller is proposed, it based on Sliding Mode (SM) and Proportional Integral (PI) control and applied in the Maximum Power Point Tracking (MPPT) of Wind Energy Conversion System (WECS). The WECS based on doubly fed induction generator (DFIG) was controlled via a three phase Matrix Converter to ensure reliability and good energy conversion management. Simulation results of the WECS are proven and compared for each mode. Very attractive results in terms of reference tracking and oscillations around Optimal Power Points (OPP) are achieved especially when using this proposed hybrid control which provide a quick and smooth energy conversion. In addition to that a unified power factor and a good conditioning to the electrical injected power are enhanced.