单位功率因数PWM整流器矢量控制研究

The Research of Vector Control of Unit Power Factor PWM Rectifier

本文介绍了三相电压型PWM整流器的工作原理及数学模型,并搭建了双闭环矢量控制系统。其中,针对矢量控制中相位角获取的不同方法,分别采用直角坐标-极坐标变换器和锁相环来跟踪电压、电流初始相位,使交流侧输入电压电流同相位,实现零静差矢量控制,完成单位功率因数整流,仿真实验结果验证了该算法的正确性和可行性。

This article describes the three-phase voltage-type PWM Rectifier working principle and mathematical model, and built a double-loop vector control system. Wherein Cartesian coordinates-polar coordinate converter and the phase-locked loop to track voltage and current initial phase were used to control the phase angle for the vector. The methods make the AC-side input voltage and current in phase with the vector control to achieve zero steady-state error, and complete unity power factor rectifier. Simulation results verify the correctness and feasibility of the algorithm.