摘要
分析了不平衡负载下的正负序电流提取问题,建立了三电平脉宽调制整流器数学模型,提出将正负序提取用于对三相电流不平衡进行治理,并论述了三相电流不平衡治理的控制策略。对正负序提取在三相电流不平衡治理中的应用进行了仿真研究,确认治理效果良好。
The issue of positive and negative sequence current extraction under unbalanced load was analyzed.The mathematical model of three-level PWM rectifier was established.It was proposed that the imbalanced three-phase current could be controlled by positive and negative sequence extraction with a discussion on the control strategy for the governance of imbalanced three-phase current.By simulating the application of positive and negative sequence extraction in the governance of imbalanced three-phase current it is confirmed that the treating effect is satisfied.
出处
《上海电气技术》
2018年第4期36-40,共5页
Journal of Shanghai Electric Technology
关键词
电流
正序
负序
提取
不平衡
应用
Current
Positive Sequence
Negative Sequence
Pick-up
Imbalance
Application
