A FOC Based Robust Fuzzy Logic Controller for a Wind Energy Conversion System to Overcome Mechanical Parameter Uncertainties

Abstract

To improve the wind turbine energy yield and strengthen its reliability, the use of robust control strategies is required. This paper presents a robust fuzzy hybrid controller in the context of overcoming the effect of uncertainties in mechanical parameters of a Wind Energy Conversion System (WECS). The WECS is composed of a Doubly-Fed Induction Generator (DFIG). The Field-Oriented Control technique (FOC) is used to separate between the machine's flux and the machine's torque control. In order to demonstrate the efficacy of the proposed controller, a comparison between the fuzzy hybrid controller and a classical PI controller has been carried out. The obtained result shows that the proposed controller is faster to reach the steady state and less sensitive to the parameter uncertainties in comparison to the classical PI controller.