电测与仪表2012，Vol.49Issue(7)：64-69,6.
采用虚拟阻抗的逆变器并联运行均流控制
Current Sharing Strategy for Parallel Inverters by Virtual Impedance
赵洪涛 1程军照2
作者信息
- 1. 淮安信息职业技术学院,江苏淮安223001
- 2. 中国电力科学研究院,武汉430074
- 折叠
摘要
Abstract
Greater capacity of UPS is usually achieved by parallel operation of inverters.Minor difference between inverter voltage magnitude,frequency and phase will trigger great circulating current,which attaches great importance to current sharing.At present,lots of solution have been proposed.Droop control without communication connection and virtual impedance are promising method.In a paper,equal virtual resistance and inductance are introduced and by linear combination of power the coupling between active and reactive power is decreased,which leads to better performance.This paper analyzes the deficiency of this method and points out that voltage correction is essential.Correction method is also provided and Mtalab simulation is carried out to confirm the effectiveness.关键词
逆变器/并联运行/均流/下垂控制/虚拟阻抗Key words
inverters,parallel operation,current sharing,droop control,virtual impedance,coordinate transformation分类
信息技术与安全科学引用本文复制引用
赵洪涛,程军照..采用虚拟阻抗的逆变器并联运行均流控制[J].电测与仪表,2012,49(7):64-69,6.
