摘要
PWM整流器由全控型器件构成,能够使输入电流正弦化,使功率因数接近于1,并且还可实现能量双向流通,其中电压型PWM整流器(简称VSR)结构简单、损耗低、控制方便,成为PWM整流器研究的重点。分析了PWM整流器的控制策略,利用MATLAB/SIMULINK仿真软件设计了电压型PWM整流器,实现了交流侧接近单位功率因数和直流侧的电压稳定。
With the development of power electronic technology, conveter devices are used widespreadly in the power system. Three-phase PWM voltage rectifier （VSR） are composed of full controlled power electronic devices, which can overcomes the drawbacks of the conventional rectifiers, and has higher power factor , lower losses, so three-phase VSR becomes the focus in research. In this paper, the control strategy of three-phase VSR is analysed, the model is bulit in MATLAB/SIMULINK, making the DC-side voltage remain steady and the system will run in u- nit power factor.
出处
《电力科学与工程》
2012年第2期12-17,25,共7页
Electric Power Science and Engineering
关键词
电压型PWM整流器
控制策略
电流内环
电压外环
SPWM
three-phase PWM voltage rectifier
control strategy
current-inner-loop
voltage-outer-loop
SPWM
