电网技术Issue(6)：1726-1731,6.
模块化多电平换流器分桥臂电流控制策略
An Individual Bridge-Arm Current Control Strategy for Modular Multilevel Converter
郑博文 1武守远 2戴朝波 2刘慧文 2李欣 2王广柱3
作者信息
- 1. 中国电力科学研究院，北京市 海淀区 100192
- 2. 中电普瑞科技有限公司，北京市 昌平区 102200
- 3. 山东大学 电气工程学院，山东省 济南市 250061
- 折叠
摘要
Abstract
Most of the current control for modular multilevel converters (MMC) is based on the rotating d-q coordinate system, in which the upper and lower bridge-arms are regarded as a whole to be controlled. In this paper, an individual bridge-arm current control strategy is proposed. Firstly, a switching cycle mean value model and a small signal model of single bridge arm in MMC are derived, and on this basis a closed-loop control system for bridge arm current is designed. Using such a control strategy not only the AC output current and DC current of MMC can be controlled flexibly, but also the AC circulating current between the upper and the lower bridge arms can be eliminated. Results of PSCAD/EMTDC-based simulation show that the proposed control strategy is effective and can fast respond to current control system.关键词
模块化多电平换流器/桥臂数学模型/电流控制/环流/PSCAD/EMTDCKey words
modular multilevel converter (MMC)/mathematical model of MMC bridge arm/current control/circulating current/PSCAD/EMTDC分类
信息技术与安全科学引用本文复制引用
郑博文,武守远,戴朝波,刘慧文,李欣,王广柱..模块化多电平换流器分桥臂电流控制策略[J].电网技术,2013,(6):1726-1731,6.
