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直流输电MMC变流器容错研究进展

来源：电工电气发布时间：2017-12-20 13:20 浏览次数：3

直流输电MMC变流器容错研究进展

胡雪松，唐圣学，李志刚

（河北工业大学电磁场与电器可靠性省部共建重点实验室，天津 300130）

摘要：对模块化多电平变流器（MMC）进行容错控制可提高MMC-HVDC系统的可靠性。介绍了MMC容错原理，从故障类型、子模块特性、容错策略、故障检测等方面阐述了现有的MMC容错研究成果和进展，指出了现有成果的优缺点，分析了存在的问题。指出MMC大范围应用已成为一种趋势，确保MMC的安全运行，缩短其子模块故障检测时间、提高容错运行可靠性以及降低容错运行控制策略的复杂性将成为今后研究重点。

关键词：模块化多电平变流器；故障检测；容错；可靠性

中图分类号：TM46；TM721.1 文献标识码：A 文章编号：1007-3175(2017)12-0001-08

Reviews on Fault Tolerance of Modular Multilevel Converter

HU Xue-song, TANG Sheng-xue, LI Zhi-gang

（Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability,

Hebei University of Technology, Tianjin 300130, China）

Abstract: That the modular multilevel converter (MMC) is carried out the fault tolerance control could improve the reliability of the MMCHVDC (high voltage direct current transmission) system. Introduction was made to the principle of MMC fault tolerance. This paper expounded the existing MMC fault tolerance research result and progress from fault type, submodule characters, tolerance strategy, fault detection etc aspects, pointing out the advantages and disadvantages of the current achievements and analyzing the existing problems. The wide-range MMC has become a trend to ensure the MMC safe operation, shortening the submodule fault detection time and improving the reliability of fault detection to lower the complexity of fault tolerance operation control strategy, which will be the research emphasis in future.

Key words: modularization multilevel converter; fault detection; fault tolerance; reliability

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