Principle, Control and Comparison of Modular Multilevel Converters (MMCs) with DC Short Circuit Fault Ride-through Capability

被引：0
|
作者：
Cui, Shenghui [1 ]
Kim, Sungmin [1 ]
Jung, Jae-Jung [1 ]
Sul, Seung-Ki [1 ]
机构：
[1] Seoul Natl Univ, Dept Elect & Comp Engn, Seoul, South Korea
来源：
2014 TWENTY-NINTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC) | 2014年
关键词：
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Lack of DC short circuit fault blocking and ride through capability is one of main issues in applications of Modular Multilevel Converter (MMC) to actual HVDC transmission system. Recently, several topologies have been proposed to provide DC short circuit fault blocking capability and/or DC fault ride through capability. In this paper, the operation principles, functionalities, and characteristics of several topologies are compared. And, it's revealed that the conventional leg capacitor energy balancing strategy by regulating DC component of leg current fails under DC short circuit fault. A corresponding new leg capacitor energy balancing method by common mode voltage injection is proposed. Validity of the proposed method is verified by computer simulation.
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收藏
页码：610 / +
页数：2
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