Abstract

This paper investigates direct active and reactive power control for a variable-speed wind energy conversion system with doubly fed induction generator (DFIG). The stator windings of DFIG are directly connected to the grid whereas rotor windings are connected to an inverter. A nonlinear sliding mode control (SMC) strategy is employed to control the instantaneous active and reactive powers of DFIG. Simulation results show the effectiveness of the proposed control law.

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