Control of wind system based on DFIG using a Super Twisting

The quality of the energy produced and the performance of the doubly fed induction generator (DFIG) based wind energy conversion systems (WECS’s) are affected by nonlinearity and external disturbances, so the system needs a high-performance control system to reduce non-linearity and disturbances. This paper presents an advanced technic which is a developed sliding mode called super-twisting sliding mode control (STSMC), where this technic applied to control and correct the active and reactive powers. Firstly, modeling the system that contain main parts (turbine, shaft and DFIG) then the control theory can be described under assumption of Field Oriented Control (FOC) after that SMC and STSMC can be applied on the system where this last two are non-linear control and offer robustness against the uncertainties and external disturbances. Finally, using mathematical model in Matlab-Simulink to understand the system and comparing the results to see performance of each control.