Super-twisting SMC for MPPT and grid-connected WECS based on SCIG

Bouhenna Amina, Khodja Mohammed, Merabet Boulouiha Houari


This paper proposes a high-order sliding mode control (HO-SMC) with the super-twisting (ST) algorithm for maximum power point tracking (MPPT)  and grid-connected wind energy conversion system (WECS), based on squirrel-cage induction generator (SCIG). The main features of this control strategy are attenuation of the chattering phenomenon inherent in first-order sliding mode control and its robustness against external and internal disturbances encountered by the wind power system. The simulation is carried out under SimPowerSystems of Matlab-Simulink to evaluate the performance and effectiveness of the proposed control compared with conventional and Fuzzy Logic proportional-integral (PI) controllers for three different scenarios of disturbances, a fluctuating wind speed, a grid voltage drop, and parametric variations.

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