Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/916225

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Title
Fault detection on multicell converter based on output voltage frequency analysis
Author/Creator
Lezana, Pablo;  Aguilera, Ricardo;  Rodríguez, José
Institution
The University of Newcastle. Faculty of Engineering & Built Environment, School of Electrical Engineering and Computer Science
Description
Multilevel converters use a large amount of semiconductors, allowing the reconfigurate of the converter to work even on internal fault condition. This paper presents a method to detect faulty cells in a cascaded multicell converter requiring just one voltage measurement per output phase. The method is based on high-frequency harmonic analysis, using a dynamic prediction of their behavior, avoiding erroneous detection on transients while keeping the precision under real fault events. Once the faulty cell is detected, it can be bypassed allowing the converter to keep working according to previously reported techniques. Experimental results confirm accurate and fast fault detection, with a good rejection to normal operation transients.
Relation
IEEE Transactions on Industrial Electronics Vol. 56, Issue 6, p. 2275-2283
Publisher Link
http://dx.doi.org/10.1109/TIE.2009.2013845
Date
2009
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Keyword(s)
digital control;  fault diagnosis;  multilevel systems;  power electronics
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/916225
Identifier
ISSN:0278-0046
Reviewed
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Subject
"IEEE Transactions on Industrial Electronics"
 
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