A New Virtual Impedance Method for Parallel Inverters with Droop Control

被引：0

作者：

Jin, Liping ^{[1
]}

He, Zhong ^{[2
]}

Zhang, Yingchao ^{[1
]}

Nie, Jintong ^{[1
]}

Zhang, Minglong ^{[1
]}

机构：

[1] Chongqing Commun Inst, Dept Elect Engn, Chongqing, Peoples R China

[2] Tobacco Chongqing Ind Corp, Chongqing Cigarette Factory, Chongqing, Peoples R China

来源：

2016 IEEE VEHICLE POWER AND PROPULSION CONFERENCE (VPPC) | 2016年

关键词：

parallel inverter; droop control; virtual impedance; negative resistance; CONTROL STRATEGY;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper proposes a new virtual impedance method for parallel inverters. To achieve wireless control, the droop control method is adopted, and virtual output impedance is usually added to alleviate the unbalance of output impedance between each inverter and then, improve power sharing accuracy. However, resistive virtual impedance usually causes a certain voltage drop, while inductive virtual impedance leads to a certain phase delay for the output voltage. To solve this problem, a new virtual inductive impedance method combining with a negative resistance is proposed. Thus the output impedance would be corrected to be a pure inductance, which results in better load sharing accuracy for the droop controlled parallel inverters. Simulation and experimental results are presented for a parallel connected inverter to validate this method.

引用

页数：4

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