Input-output linearization of wind energy system based on PMSG for direct active and reactive power control via sliding mode approach

This paper proposes a new direct power control (DPC) for wind turbine system driven by permanent synchronous generator (PMSG) in order to track maximum absorbable power in different wind speeds. The desired optimum power is determined for per wind speed by lookup table. Finally new direct power control (DPC) employs input output linearization and sliding mode nonlinear controller for robust control of active and reactive power and obtaining maximum power from wind turbine. Also constant switching frequency and required pulse for converters is achieved by using space vector modulation (SVM). Simulation results on 5.7-KW wind turbine are provided Results show that the proposed controller has low error for tracking maximum power in presence wind speed variation.