基于双闭环的高功率因数单-三相电源的研究

Research of Three-phase Power Supply based on Single-double Closed Loop and High Power Factor

介绍了一种利用民用220V单相交流电源变换为三相220V交流电源的研究方法。系统由前级APFC电路和后级电压型逆变电路组成。前级APFC电路由单相不可控整流器和Boost电路组成,采用电压-电流双闭环的控制方法,旨在实现单位功率因数和为后级逆变提供稳定直流电压;后级电压型逆变电路采用SVPWM控制策略,极大的提高了直流母线的利用率。并建立了Simulink仿真模型,仿真结果证明了所提出的三相电源具有很好的动态性能和抗干扰能力。

This paper introduces a research method of converting 220 V single-phase AC power supply into three-phase 220 V AC power supply. The system consists of the former APFC circuit and the post-level voltage inverter circuit. The pre-stage APFC circuit is composed of single-phase uncontrollable rectifier and Boost circuit. The voltage-current double closed-loop control method is adopted to realize the unit power factor and provide a stable DC voltage for the post-stage inverter. The post-stage voltage inverter circuit SVPWM control strategy, greatly improving the utilization of DC bus. Simulink simulation model is established. The simulation results show that the proposed three-phase power supply has good dynamic performance and anti-jamming capability.