Feedback linearization control with sliding mode disturbance compensator for PMSG based wind energy conversion system

A feedback linearization controller with a sliding mode disturbance compensator for a permanent magnet synchronous generator based wind energy conversion system is proposed in this paper. The feedback linearization is based on Lie derivatives, input and disturbance relative degrees of the nonlinear generator system. The turbine torque is considered as unknown disturbance to the controller and its effects is rejected by a sliding mode compensator based on the speed tracking error. This compensator ensures the disturbance rejection and the robustness to the uncertainties present in the system. The effectiveness of the proposed controller is experimentally verified by a wind energy conversion system driven by the Opal-RT real-time simulator (OP5600).