采用一种基于输入输出电流解耦反馈的控制策略和PI调节方法，以三相整流器在d-q同步旋转坐标系中的模型为基础，建立电流内环和电压外环的PWM整流器简化数学模型，并且运用MATLABR2009a建立系统仿真模型，保证输出电压的稳定性。%The basic principle of three-phase PWM rectifier is introduced in this paper. A control strategies of decoupling of input and output current based on feedback and methods for regulation of PI is used, and the simplified mathematical model of the PWM rectifier of the current inner loop and outer voltage is established, which is based on the model of the d-q synchronous rotating coordinate system in three-phase rectifier, and a simulation model of the PWM rectifier, which can achieve the stability of the output voltage, is established by the MATLAB R2009a.
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