Abstract: The working principle of the three-phase voltage source PWM rectifier is described. Based on the grid-side current vector of the rectifier, the mathematical model of the system in the synchronous rotating coordinate system is derived, and a current feedforward decoupling control algorithm is given. At the same time, the design method of the PWM rectifier dual-loop control system based on current feedforward decoupling is introduced in detail. And the DSP digital experimental system of the PWM rectifier is established using TMS320LF2407A. The experimental results show that the rectifier can obtain a sinusoidal input current with unity power factor, a stable DC output voltage and a fast dynamic response.
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