Maximum power point tracking of DFIG wind turbine system based on adaptive higher order sliding mode

An adaptive HOSMC (higher order sliding mode control) scheme is proposed to achieve maximum power point tracking of DFIG wind turbine system. DFIG power generation system is firstly established. Adaptive second order SM (sliding mode) rotor voltage controller is then presented to track maximum wind energy and adjust reactive power. Finally, the system simulation is executed under random wind speed. The proposed method achieved optimal toque tracking and reactive power regulation. The whole control system is robust and chattering is greatly restrained.