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A Fault-Tolerant Control Strategy for Cascaded H-Bridge Multilevel Rectifiers
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  • A Fault-Tolerant Control Strategy for Cascaded H-Bridge Multilevel Rectifiers
  • A Fault-Tolerant Control Strategy for Cascaded H-Bridge Multilevel Rectifiers
저자명
Iman-Eini. Hossein,Farhangi. Shahrokh,Schanen. Jean-Luc,Khakbazan-Fard. Mahboubeh
간행물명
Journal of power electronics : JPE
권/호정보
2010년|10권 1호|pp.34-42 (9 pages)
발행정보
전력전자학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Reliability is an important issue in cascaded H-bridge converters (CHB converters) because they use a high number of power semiconductors. A faulty power cell in a CHB converter can potentially lead to expensive downtime and great losses on the consumer side. With a fault-tolerant control strategy, operation can continue with the undamaged cells; thus increasing the reliability of the system. In this paper, the operating principles and the control method for a CHB multilevel rectifier are introduced. The influence of various faults on the CHB converter is investigated. The method of fault diagnosis and the bypassing of failed cells are explained. A fault-tolerant protection strategy is proposed to achieve redundancy in the CHB rectifier. The redundant H-bridge concept helps to deal with device failures and to increase system reliability. Simulation results verify the performance of the proposed strategy.