Optimized Branch Current Control of Modular Multilevel Matrix Converters Under Branch Fault Conditions

被引：35

作者：

Fan, Boran ^{[1
]}

Wang, Kui ^{[1
]}

Zheng, Zedong ^{[1
]}

Xu, Lie ^{[1
]}

Li, Yongdong ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, State Key Lab Power Syst, Beijing 100084, Peoples R China

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2018年 / 33卷 / 06期

关键词：

Branch failure; fault tolerance; Hexverter; modular multilevel matrix converter (M3C); triple star-bridge cells (TSBC) converter;

D O I：

10.1109/TPEL.2017.2769117

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：

The modular multilevel matrix converter (M3C) is a promising topology for high-voltage high-power applications. It features easy scalability, high-quality input and output waveforms, superior availability, etc. This letter aims to further increase the availability of the M3C when one or more of the nine branches are lost. A general nonlinear multivariable optimization model is set up to optimize the branch current configuration after the branch lost. The proposed method reduces system power capability loss after the branch failure. It achieves a smooth transition from a full M3C to a reduced topology without shutdown of the system. AM3C prototype with 27 cells is designed, and experiment results are presented to confirm the validity of this method.

引用

页码：4578 / 4583

页数：6

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