直接电流控制的三相桥式PWM整流电路的设计与分析

文章对直接电流控制的PWM整流电路开展研究,主要内容如下：（1）设计BOOST型三相桥式PWM整流器的主电路。（2）设计基于直接电流控制的PWM整流电路的控制系统。（3）建立直接电流控制系统Simulink仿真模型,进行仿真分析。仿真结果证明直接电流控制方案使得PWM整流器功率因数接近于1,流入电网的电流基本接近正弦波,对电网的谐波污染小。

The Design and Analysis of Direct Current Controlled Three-Phase Bridge-Type PWM Rectifier Circuit

In this paper, direct current controlled three-phase PWM rectifier is studied, the main contents are as follows： （1） Design the main circuit of the Boost type three-phase PWM rectifier. （2） Design the control system of direct current controlled PWM rectifier. （3） Establish the simulate model of control system of the direct durrent controlled Three- phase PWM Rectifier, and carry on simulating and analysis. The results of the simulation prove that the direct current control system has much advantage in controlling the PWM rectifier, such as： high power factor approximate to unit, the line current flowing into line side is close to the sine wave basically and pollution of the harmonic is low, etc.