IGBT open-circuit fault diagnosis for VSC-HVDC rectifier

被引：0
|
作者：
Jing Y.-Z. [1 ,2 ]
Liao Z.-Z. [1 ,2 ]
Gong Q.-W. [1 ,2 ]
Qian C. [1 ,2 ]
Peng T. [1 ,2 ]
Zhang C.-H. [1 ,2 ]
机构：
[1] Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle, Ministry of Education, Southwest Jiaotong University, Chengdu
[2] School of Electrical Engineering, Southwest Jiaotong University, Chengdu
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2021年 / 25卷 / 03期
关键词：
Fault diagnosis; IGBT open circuit; Rectifier; Voltage residual; VSC-HVDC;
D O I：
10.15938/j.emc.2021.03.012
中图分类号：
学科分类号：
摘要：
In order to realize the online diagnosis for IGBT open-circuit fault in VSC-HVDC rectifier, firstly, switching function model of the rectifier based on the topology of the rectifier was obtained, and the definition of three-phase voltage residual based on the switching function was given. Then, the three-phase voltage residual calculation formulas of two types of single-bridge IGBT open circuit and four types of double-bridge IGBT open-circuit faults were derived, and the voltage residual characteristics of IGBT open-circuit faults were analyzed. By setting the voltage residual threshold and the IGBT fault flag, a method for IGBT open circuit fault diagnosis based on voltage residual was proposed. Finally, the proposed method is verified by PSCAD/EMTDC platform. The simulation results show that the proposed method is able to diagnose single bridge and double bridge IGBT open-circuit faults accurately. © 2021, Harbin University of Science and Technology Publication. All right reserved.
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页码：104 / 114
页数：10
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