基于单周控制的三相PWM整流器负序电压补偿型不平衡控制策略

被引：8

作者：

徐友 ^{[1
,2
]}

郑建勇 ^{[1
]}

梅军 ^{[1
]}

姚磊 ^{[1
]}

机构：

[1] 东南大学电气工程学院

[2] 南京农业大学工学院

来源：

电工技术学报 | 2012年 / 27卷 / 11期

基金：

国家高技术研究发展计划(863计划);

关键词：

三相PWM整流; 单周控制; 电网电压不平衡; 恒有功功率控制; 电压跌落;

D O I：

10.19595/j.cnki.1000-6753.tces.2012.11.025

中图分类号：

TM461 [整流器];

学科分类号：

080801 ;

摘要：

针对三相脉宽调制(PWM)整流器在电网电压不平衡条件下的控制问题,提出一种基于单周控制的三相PWM整流器负序电压前馈补偿型不平衡控制策略。该控制策略在单周控制的基础上采用电网负序电压对三相PWM整流器电网电流反馈量进行前馈补偿,无需实时计算电网电流的正、负序分量,仅使用1个比例积分(PI)直流电压外环控制器即可实现三相PWM整流器恒有功功率控制,简化了系统控制结构。仿真和实验结果表明,该控制策略可从根本上抑制三相PWM整流器在电网电压不平衡条件下直流侧电压2次谐波和电网电流谐波,大大优化了三相PWM整流器不平衡运行性能。

引用

页码：183 / 190

页数：8

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