A Parallel Control Strategy for the Cascaded Multi-Level Inverters in the Distributed Generation System

被引：0

作者：

Qiao, Daoji ^{[1
]}

Wang, Tianzhen ^{[1
]}

Tang, Tianhao ^{[1
]}

Benbouzid, M. E. H. ^{[2
]}

机构：

[1] Shanghai Maritime Univ, Shanghai 201306, Peoples R China

[2] Univ Brest, EA 4325, LBMS, Brest, France

来源：

PROCEEDINGS OF THE 36TH CHINESE CONTROL CONFERENCE (CCC 2017) | 2017年

基金：

中国国家自然科学基金;

关键词：

Cascaded Multi-Level H-bridge Inverter; Unbalance Power Source; Droop Control; Secondary Control; Islanded Mode;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In the distributed generation systems, three-phase inverters are the basement because they are used as power electronics interface between the generators and the grid. Cascaded multi-level H-bridge inverters are widely used for industrial application due to the simple topology and good power quality. However, unbalanced power source problem will easily happen in such an application. In this paper, a parallel control strategy for three-phase cascaded multi-level H-bridge inverters is proposed. The voltage and current inner control loops are introduced to deal with unbalanced power source problem. The droop method with the virtual impedance loops is introduced in order to share power between parallel inverters. Besides, a secondary control method is added to remove the frequency and amplitude deviation produced by the droop control. The performance and robustness under Islanded operation mode are validated by the simulation results.

引用

页码：8701 / 8706

页数：6

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