三相高功率因数电压型PWM整流器建模与仿真

提出了三相高功率因数电压型PWM整流器全数字控制的数值仿真方法,实现了数字控制逻辑与主电路仿真的统一.文中详细地分析并建立了三相电压型PWM整流器的高频数学模型,建立了三相高功率因数PWM整流器控制到输出的传递函数,给出了电压调节器的设计方法.数字逻辑仿真所用的高级语言可直接转换成DSP能识别的逻辑语言来实现实验样机的数字控制.仿真和实验波形的一致性表明:本文建立的电压型PWM整流器的高频数学模型是正确的,提出的仿真方法是有效的.

Modeling and Simulation of Three-Phase High-Power-Factor PWM Rectifier

A numerical simulation methodology based on high-frequency model for a DSP controlled three phase high-power-factor PWM rectifier was proposed in this paper. Unitive simulation with digital control logic and power circuit was achieved. High frequency model for the rectifier mentioned and the input-to-output transfer function for the system were deduced with analysis. Design principle and method of the voltage regulator were given based on the model. The simulated control logic in M file at Matlab can be translated into DSP controller language directly for the rectifier system to simplify design of the control with improved performance. At the end of the paper, simulation and experimental results are given and both of them match each other. That verifies the validity of both of the high frequency model and the simulation method proposed.