Circulating Current Suppressing Controller in Modular Multilevel Converter

被引：0

作者：

Tu, Qingrui ^{[1
]}

Xu, Zheng ^{[1
]}

Zhang, Jing ^{[2
]}

机构：

[1] Zhejiang Univ, Dept Elect Engn, Hangzhou 310003, Zhejiang, Peoples R China

[2] Zhejiang Elect Power Dispatch & Commun Ctr, Hangzhou, Peoples R China

来源：

IECON 2010 - 36TH ANNUAL CONFERENCE ON IEEE INDUSTRIAL ELECTRONICS SOCIETY | 2010年

关键词：

modular multilevel converter; circulating current; suppressing; doubly fundamental frequency; negative sequence;

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：

A circulating current suppressing controller (CCSC) is presented to eliminate the inner balancing currents in modular multilevel converter (MMC). Based on the double-fundamental-frequency, negative-sequence rotational frame, the three phase alternative circulating currents are decomposed to two DC components, and are limited to a low level by a pair of proportional integral controllers. This control strategy does not affect the MMC outer dynamics in the ac side. Simulation results based on PSCAD/EMTDC demonstrated the circulating current suppressing effect of the proposed CCSC and proved that the distortion of the arm current is mitigated significantly.

引用

页数：5

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