Abstract: Aiming at the problems of low control accuracy and poor anti-interference performance of permanent magnet synchronous wind generator（PMSG）under the traditional control method and the saturation constraint caused by the rapid change of wind speed in the process of wind energy capture,this paper proposed a finite-time and sliding mode controller（FT-SMC）for input-saturated PMSG based on the input-output feedback linearization（IOFL）method,combined with finite-time（FT）theory and sliding mode control（SMC）a finite-time and sliding mode controller（FT-SMC）is designed for input-saturated PMSG based on the input-output feedback linearization（IOFL）method,combined with finite-time（FT）theory and sliding mode control（SMC）. Firstly,IOFL is introduced to improve the control accuracy of the system,and FT-SMC is designed on the basis of IOFL to enhance the robustness of the system.Then,an anti-saturation compensator（ATC）is introduced into the sliding mode control system to solve the control stability problem caused by input saturation. Besides,the Lyapunov stability theory is used to analyze the stability of the closed-loop system to ensure that the system can achieve fast tracking and stable operation in a finite time. Finally,the effectiveness of the designed controller and the tracking performance of the system speed are further verified on the Matlab/Simulink simulation and semi-physical simulation platform.The experimental results show that FT-SMC has the advantages of high control accuracy,fast response speed and strong anti-disturbance ability.