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Predictive control of wind energy conversion system

Grid connected wind energy conversion systems (WECS) present interesting control demands, due to the intrinsic nonlinear characteristics of windmills and electric generators. In this paper a predictive control strategy for doubly fed induction machine is proposed. The doubly fed induction machine is used in generating mode for large-scale grid-connected variable speed wind turbines. In order to control the active and reactive power exchanged between the stator and the grid, the rotor is fed by a bi-directional power converter. In suggested controller, maximizing power including speed and torque control is considered. Simulation results verify the effectiveness of the proposed methods.