The AC side of three-phase current-type PWM rectifier has LC filter link

which is used to filter out current harmonic of the grid side and help the switching device commutate

but it has resonance peak causing current distortion of the grid side.In view of this issue

a kind of new PWM rectifier control strategy is proposed in this paper

that is to suppress resonance peak through active damping and eliminate the influence of coupling items on the system performance by the use of de-coupling control.The system block diagram is analyzed by setting up internal and external loop system block diagram and analyzing the system block diagram and the design method of the inner and outer loop controller parameters is given.The practicality of the proposed method is proved by way of setting up experimental platform.