Abstract: Aiming at the uncertainties of nonlinear terms in permanent magnet synchronous motors and the adverse effects of system parameter perturbation,an adaptive backstepping control strategy based on VIENNA permanent magnet wind power system is proposed.The VIENNA rectification topology is used to maximize the power density of the whole machine,reduce harmonic interference,and improve system reliability. The system control law and parameter self-adaptive law are obtained through self-adaptive backstepping control,which solves the nonlinearity of the system and realizes the parameter self-adaption of the stator resistance and load torque,thereby improving the anti-interference ability of the system. Simulation results show that the control system has strong robustness.