An Optimized Open Circuit Switch Faults Diagnosis for Three Level Active NPC Converter

被引：0

作者：

Zhang, Bo ^{[1
,2
]}

Ge, Qiongxuan ^{[1
,2
]}

Li, Yaohua ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Key Lab Power Elect & Elect Drive, Beijing, Peoples R China

[2] Chinese Acad Sci, Inst Elect Engn, Beijing, Peoples R China

来源：

2019 22ND INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS 2019) | 2019年

基金：

国家重点研发计划;

关键词：

active NPC converter; open circuit fault; multi-level; faults diagnosis; INVERTER; SYSTEM;

D O I：

暂无

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：

Compared with three-level neutral point clamped (NPC) converter, three level active neutral point clamped (ANPC) converter provides more flow paths which can improve the balance of power loss distribution. Fault diagnosis in power electronic converters is necessary to prevent further damage, the open circuit switch fault of every device in three level ANPC converter is analyzed in this paper. An optimized open circuit switch faults diagnostic strategy for three level ANPC is proposed. This strategy can diagnose any faulty switch and diode based on the phase voltages. A low cost and fast phase voltage detection circuit based on linear photoelectric isolation is presented in this paper. Compared with the existing open circuit switch faults diagnostic strategies, this strategy has the advantages of simplicity, cost-effectiveness and faster detection speed. Simulation results verified the effectiveness of the introduced fault diagnosis method.

引用

页码：5032 / 5035

页数：4

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