摘要
大量变频器的广泛应用对电力系统造成的污染越来越严重,本文从硬件结构、控制策略以及外接滤波电路等三个方面提出了一系列抑制变频器谐波污染的方法和措施,同时本文对变频器低载时输入电流不对称引起的功率因数不平衡现象作了分析,并提出了相应的改善建议。
The far-ranging application of plentiful frequency converters brought severe pollute to the power system. And a series of methods about reducing harmonic produced by frequency converter were brought out in this paper, which include three views of hardware structure, control strategy and filter circuit. Additionally the phenomenon of asymmetry input current producing unbalance power factor when frequency converter low loaded was analyzed and some suggestions relevant to it were also advanced.
出处
《变频器世界》
2006年第8期103-107,90,共6页
The World of Inverters
关键词
变频器
谐波
功率因数
不平衡
Frequency converter Harmonic Power factor Unbalance
