摘要
为了改善并网电流的波形品质,在大功率整流器中采用了空间矢量相移多重化技术。在分析大功率相移SVM整流器基本工作原理的基础上,提出了简单的d,q坐标控制方案。该控制方案由负载电流环、均流环及电网电压前馈三部分组成,在稳定直流侧电压的同时实现了各并联整流器交流侧的良好均流。最后分析了并联环流特性,给出了相应的均流电抗器设计方法。工程实验验证了系统方案的可靠性和控制系统的有效性。
This paper presents a control scheme of simple d,q coordinates based on the basic operating principle of phaseshifted multi-converter system.This control scheme consists of load current loop, circulating current loop and grid voltage feedforward.The circulating current between the parallel converter is limited with the stable DC voltage control.The circulating current feature of the parallel converter is analyzed and the design method of circulating current reactor is presented.The experiment shows reliability of the scheme and validity of the control system.
出处
《电力电子技术》
CSCD
北大核心
2008年第8期35-36,70,共3页
Power Electronics
基金
国家十一五科技支撑计划(2006BAA01A20)~~
关键词
整流器
脉宽调制/相移
converter
pulse width modulation / phase-shifted
