Second order sliding mode maximum power point tracking of wind turbine systems based on double fed induction generator

摘要

This paper deals with maximum power point tracking control (MPPT) of wind turbines systems based on double fed induction generator (DFIG). To minimize the variable and random character of wind speed impact on the wind turbine system, a maximum power point tracking algorithm based on sliding mode control is proposed. The MPPT algorithm is designed with sliding-mode control theory, this solution shows good robustness with respect to parameter variations, measurement errors and robustness with respect to external disturbances and unmodeled dynamics (DFIG-WT). A comparative study is elaborated using PI, first and second order sliding mode controllers. The simulation results confirm the effectiveness of the proposed approach either in transient and steady state.