Fault-tolerant Method Based on Reconstructed Modulation for H-bridge Converter in Power Electronic Traction Transformer

被引：0
|
作者：
Zhao, Nan [1 ]
Zheng, Zedong [1 ]
Li, Yongdong [1 ]
机构：
[1] Tsinghua Univ, State Key Lab Power Syst & Generat Equipment, Dept Elect Engn, Beijing, Peoples R China
来源：
2021 IEEE TRANSPORTATION ELECTRIFICATION CONFERENCE & EXPO (ITEC) | 2021年
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1109/ITEC51675.2021.9490127
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：
A fault-tolerant method for H-bridge converter in power electronic traction transformer is proposed. This fault-tolerant mothed can ensure safe operation for H-bridge converter under open-circuit fault condition based on modulation reconstruction strategy. The faulty module can still transfer certain power. The influence of open-circuit fault on a single full-bridge circuit is illustrated, and the influence on modulation and PWM voltage is analyzed. Based on the analysis, the fault-tolerant method is given to reconstruct the modulations of both faulty module and normal modules with the change of current direction. Correctness and efficiency are validated through experimentation.
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页数：4
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