Fault diagnosis and fault-tolerant operation of current source inverter for safety-critical applications

Majid Tahmasbi Fard, Jiangbiao He, Zheng Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

16 Scopus citations

Abstract

This paper presents the fault-tolerant current source inverter based motor-drive system, which can diagnose the open-circuit failure of the switches and restructure the topology of the inverter to keep the inverter operating in the post-fault condition. The proposed diagnostic method is able to detect the open-circuit fault both in the main switches and those of the redundant switches. During fault-tolerant operation, the identified faulty switch is fully replaced by one of the switches from the fourth leg to ensure full rating operation of the inverter without any extra overrating requirements for switches. In addition, wide bandgap (WBG) devices are employed to conFigure the redundant fourth leg. During normal operation, soft switching is enabled across all the silicon IGBTs, while just WBG devices in the fourth leg undertake hard switching. Thus, the inverter efficiency is improved and the thermal stress in the IGBTs is relieved.

Original languageEnglish
Title of host publication2020 IEEE Transportation Electrification Conference and Expo, ITEC 2020
Pages925-929
Number of pages5
ISBN (Electronic)9781728146294
DOIs
StatePublished - Jun 2020
Event2020 IEEE Transportation Electrification Conference and Expo, ITEC 2020 - Chicago, United States
Duration: Jun 23 2020Jun 26 2020

Publication series

Name2020 IEEE Transportation Electrification Conference and Expo, ITEC 2020

Conference

Conference2020 IEEE Transportation Electrification Conference and Expo, ITEC 2020
Country/TerritoryUnited States
CityChicago
Period6/23/206/26/20

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

Keywords

  • Current source inverter
  • Fault Tolerant operation
  • Fault diagnosis
  • High efficiency
  • Silicon Carbide

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Automotive Engineering
  • Transportation

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