Virtual Neutral Point Selection for Three-Leg Railway Power Quality Conditioner

被引：0
|
作者：
Zhang Chunpeng [1 ]
Jiang Qirong [1 ]
Tian Xu [1 ]
Wei Yingdong [1 ]
机构：
[1] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
来源：
2013 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2013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：
With the development of series connection of IGBTs, the transformerless high-voltage converter becomes an important type utilized in power quality improvement applications. Electric railway is a kind of unbalanced load and the compensators based on three-leg converters are potential solutions for it. This paper proposes a modeling method for three-leg railway power quality conditioner, by means of selecting a virtual neutral point. This method, compared with conventional ways, replaces the two higher actual phase voltages by three lower virtual ones, which helps the converter lower the requirement of dc-link voltage level and the number of series-connected devices by about 30%. Simulation results prove that the control strategy based on this new model represents satisfying performances.
引用
收藏
页码：5237 / 5239
页数：3
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