Feedback Control of Double-VSC DFIG by Sliding Mode

In order to improve the robustness of feedback linearization control scheme to parameter change in maximum wind energy extraction control, feedback decoupling combined sliding mode control is proposed for maximum power point tracking control of double-VSC DFIG system. The addition of sliding mode control negates the disadvantage of feedback linearization. Simulation results show that compared with the PI control based on feedback linearization, the proposed control scheme has stronger robustness.