Zeliang Shu, Zuhang Kuang, Shi-tao Wang, Xu Peng, Xiaoqiong He
{"title":"Diode-clamped three-level multi-module cascaded converter based power electronic traction transformer","authors":"Zeliang Shu, Zuhang Kuang, Shi-tao Wang, Xu Peng, Xiaoqiong He","doi":"10.1109/IFEEC.2015.7361418","DOIUrl":null,"url":null,"abstract":"A diode-clamped three-level multi-module based power electronic transformer is proposed in application of locomotive traction for single-phase 25kV/50Hz railway. Each module is composed of three-level H-bridge AC-DC rectifier and half-bridge bidirectional DC-DC converter. Compared to traditional two-level H-bridge structure, the three-level module can improve interface voltage and power scale. Meanwhile, the number of cascaded modules and medium frequency transformers is decreased by half. The AC-DC rectifier is controlled by direct current control loop with dc-link voltage equalization algorithm. A minimum RMS current control algorithm is adopted in DC-DC converter to improve system efficiency. Finally, experimental results on three-module cascaded prototype verified the performances of the developed topology and control under different operating conditions.","PeriodicalId":268430,"journal":{"name":"2015 IEEE 2nd International Future Energy Electronics Conference (IFEEC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"18","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 IEEE 2nd International Future Energy Electronics Conference (IFEEC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IFEEC.2015.7361418","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 18
Abstract
A diode-clamped three-level multi-module based power electronic transformer is proposed in application of locomotive traction for single-phase 25kV/50Hz railway. Each module is composed of three-level H-bridge AC-DC rectifier and half-bridge bidirectional DC-DC converter. Compared to traditional two-level H-bridge structure, the three-level module can improve interface voltage and power scale. Meanwhile, the number of cascaded modules and medium frequency transformers is decreased by half. The AC-DC rectifier is controlled by direct current control loop with dc-link voltage equalization algorithm. A minimum RMS current control algorithm is adopted in DC-DC converter to improve system efficiency. Finally, experimental results on three-module cascaded prototype verified the performances of the developed topology and control under different operating conditions.
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