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Fast Detection of Open-Switch Fault in Cascaded H-Bridge Multilevel Converter

Shahbazi, M.; Zolghadri, M.R.; Khodabandeh, M.; Ouni, S.

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Authors

M.R. Zolghadri

M. Khodabandeh

S. Ouni



Abstract

Cascaded H-Bridge converter has recently been utilized in different high-power applications due to its modular and simple structure. In order to have a balanced operation after a fault occurrence in this converter, it is necessary to detect the switch fault and its location. In this paper, a fast power switch fault detection method is presented to identify the fault and its location. Only one voltage measurement per phase is required by this method, and the fault detection is faster compared to the existing methods. Moreover, it is suitable for implementation on an FPGA device, due to the use of simple math, relational and state machine blocks. The proposed method is verified by computer simulations and FPGA-based experimental tests.

Citation

Shahbazi, M., Zolghadri, M., Khodabandeh, M., & Ouni, S. (2018). Fast Detection of Open-Switch Fault in Cascaded H-Bridge Multilevel Converter. Scientia iranica, 25(3), 1561-1570. https://doi.org/10.24200/sci.2017.4371

Journal Article Type Article
Acceptance Date Dec 24, 2016
Online Publication Date Aug 30, 2017
Publication Date Jun 1, 2018
Deposit Date Nov 7, 2016
Publicly Available Date Nov 8, 2016
Journal Scientia Iranica : Internationa journal of science & technology.
Print ISSN 1026-3098
Electronic ISSN 2345-3605
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 25
Issue 3
Pages 1561-1570
DOI https://doi.org/10.24200/sci.2017.4371

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