DC voltage balance control strategy among phases for cascaded STATCOM

被引：0

作者：

Zhao, Bo ^{[1
]}

Guo, Jianbo ^{[2
]}

Zhou, Fei ^{[1
]}

机构：

[1] China EPRI Science and Technology Co., Ltd., Changping District, Beijing 102200, China

[2] China Electric Power Research Institute, Haidian District, Beijing 100192, China

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2012年 / 32卷 / 34期

关键词：

Voltage control - Power converters - Bridge circuits - Chains - Electric current regulators;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Chain structure is widely used in static synchronous compensator (STATCOM), which is composed of several H-bridge modules with identical structure. The stability of DC voltage of each converter determines the stability of the device. This article analyzed the converter chain power equation, sets forth the basic mathematical principles to achieve DC voltage balance control among the converter chains, and put forward an averaging DC voltage control strategy based on negative sequence current. The scheme also took system unbalanced voltage into consideration. Simulation results and industrial prototype tests show the high steady-state control accuracy and excellent transient and dynamic performance of the proposed control strategy, thus proves it to be an effective solution to the chain converter DC voltage control problems. © 2012 Chin. Soc. for Elec. Eng.

引用

页码：36 / 41