This paper describes weakness of the control strategy of traditional double-loop for single-phase VSR, and based on it, introduces the advantages of PR controller, so as to PR controller replaces the PI controller. At the same time, the method of active damping, with the trap filter correction, is used to suppress the resonance peak value of the LCL filter. Moreover, the voltage feed-forward control method is put into use, as a result, the control method is a strategy that contains voltage loop,grid-connected current loop and capacitor current loop. Finally the control parameters are set up, and the model of simulation are conducted in with the help of Matlab/Simulink. The simulation results indicate that the strategy can control the grid-connected current well, and it has a good effect of filtering, meanwhile it also has strong ability of anti the disturbance of the grid voltage.The target, electrical energy can be fed to the grid in the way of unit power factor, is achieved, that is to say the feasibility and the superiority are verified.
