Improved Super Twisting Based High Order Direct Power Sliding Mode Control of a Connected DFIG Variable Speed Wind Turbine

This work presents the theoretical and practical comparison of linear nonlinear control laws for direct power a grid-connected double fed induction generator (DFIG), based wind energy conversion system (WECS) under different operating modes. We will show improvement brought by super twisting high order sliding mode to mitigate chattering phenomenon, due switching frequency. It also avoid hyperlink controller settings system’s mathematical model reduce sensibility external disturbances. The overall structure proposed requires use DFIG simplified with field-oriented (FOC). last allows an instantaneous decoupled stator active reactive acting on dq rotor currents (Iqr , Idr ) respectively. In preliminary tests, comparative study is conducted verify superior performance WECS scheme during various modes including maximum point tracking MPPT mode. reveals effectiveness each implemented law its advantages drawbacks.