基于SVPWM三相电流源整流器的研究

Study on three-phase current source rectifier based on SVPWM

介绍了三相电流型整流器(CSR)基本原理和空间矢量脉宽调制(SVPWM)控制技术。三相电流型SVPWM整流器调制信号生成的步骤为:判断指令电流所在的扇区、选择开关矢量及其作用顺序和计算开关矢量的作用时间。利用Matlab/Sim-ulink搭建整个系统的仿真模型,并进行了仿真。仿真结果表明,该系统具有良好的静、动态特性,交流侧电流接近于正弦,功率因数接近于1。

This paper introduces the basic principle of three - phase current source rectifier （CSR） and space vec- tor pulse width modulation （SVPWM）. The steps of modulated signal generation by three - phase current source rectifier based on SVPWM are： to judge the sector of instruction current, to select switching vector and its action sequence, and to calculation the action time of switching vector. The simulation model of the whole system is estab- lished by Matlab/Simulink. The result shows that the system is of great static and dynamic characteristics; the ac current is close to sine, while the power factor close to 1.