Energy Transfer Analysis for Capacitor Voltage Balancing of Modular Multilevel Converters

被引：6
|
作者：
Li, Binbin [1 ,2 ]
Li, Rui [1 ]
Williams, Barry W. [1 ]
Xu, Dianguo [2 ]
机构：
[1] Univ Strathclyde, Glasgow G1 1XQ, Lanark, Scotland
[2] Harbin Inst Technol, Harbin, Peoples R China
来源：
2016 IEEE TRANSPORTATION ELECTRIFICATION CONFERENCE AND EXPO (ITEC) | 2016年
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1109/ITEC.2016.7520283
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：
Voltage balancing between sub-module (SM) capacitors is essential for reliable operation of the modular multilevel converter (MMC). To facilitate design and understanding of the balancing controllers, this study presents an energy transfer analysis for MMC, which explains how the energy can be independently transmitted from/to one phase, between the upper and lower arms, and among the SMs, of an MMC. Using this analysis, the variables which can be utilized to achieve capacitor voltage balancing are identified. Validity of this study has been verified by experimental results based on a three-phase MMC prototype.
引用
收藏
页数：6
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