Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/4853
Título: Detection and diagnosis solutions for fault-tolerant VSI
Autor: Cordeiro, Armando José Leitão
Palma, João Carlos Pires da
Maia, José
Resende, Maia J.
Palavras-chave: Converter redundancy
Fault detection
Fault-tolerant inverter
Fault protection
IGBT
Failure
VSI
Data: Nov-2014
Editora: Korean Inst Power Electronics
Resumo: This paper presents solutions for fault detection and diagnosis of two-level, three phase voltage-source inverter (VSI) topologies with IGBT devices. The proposed solutions combine redundant standby VSI structures and contactors (or relays) to improve the fault-tolerant capabilities of power electronics in applications with safety requirements. The suitable combination of these elements gives the inverter the ability to maintain energy processing in the occurrence of several failure modes, including short-circuit in IGBT devices, thus extending its reliability and availability. A survey of previously developed fault-tolerant VSI structures and several aspects of failure modes, detection and isolation mechanisms within VSI is first discussed. Hardware solutions for the protection of power semiconductors with fault detection and diagnosis mechanisms are then proposed to provide conditions to isolate and replace damaged power devices (or branches) in real time. Experimental results from a prototype are included to validate the proposed solutions.
Peer review: yes
URI: http://hdl.handle.net/10400.21/4853
DOI: 10.6113/JPE.2014.14.6.1272
ISSN: 1598-2092
2093-4718
Versão do Editor: http://www.jpe.or.kr/archives/view_articles.asp?seq=939
Aparece nas colecções:ISEL - Eng. Electrotécn. - Artigos

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