Sliding mode control of the active and reactive power of DFIG for variable-speed wind energy conversion system

The present research paper deals with a study of a variable speed wind energy conversion system (VSWECS) based on a Doubly Fed Induction Generator (DFIG).A direct control of doubly fed induction generator (DFIG) with a variable structure control based on a sliding mode controller (SMC). Our aim is to make the stator active and reactive power control track their reference variations. The use of the nonlinear sliding mode control gives very good active and reactive power performance when it applies to DFIG. Simulation results and improvement of the behaviour of the DFIG are presented, using Matlab/Simulink software, and discussed to validate the proposed control strategy. Simulation results illustrate the good performance of the controller and prove feasibility of the power control strategy.

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