Abstract: In this paper, a predictive power control strategy based on instantaneous power theory in αβ two-phase stationary coordinate system is proposed for the converter. Based on the instantaneous power, the predictive power control is adopted in the inner loop, which reduces the complexity of the traditional PI control and simplifies the control algorithm. The outer ring adopts sliding mode control to eliminate the overshoot of DC output voltage and improve the response speed of the system. Finally, the simulation model of the traditional double closed-loop control strategy and the control strategy proposed in this paper is compared and analyzed in MATLAB/Simulink to verify the feasibility and effectiveness of the control strategy proposed in this paper.