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Authors:Jianbo Gao: Technische Universität München, Munich, Germany
Yang Ji: German Aerospace Center, Wessling, Germany
Johann Bals: German Aerospace Center, Wessling, Germany
Ralph Kennel: Technische Universität München, Munich, Germany
Publication title:Fault Detection of Power Electronic Circuit using Wavelet Analysis in Modelica
Conference:Proceedings of the 9th International MODELICA Conference, September 3-5, 2012, Munich, Germany
Publication type: Abstract and Fulltext
Issue:076
Article No.:052
Abstract:In more electric aircrafts (MEA) the electric power network is important for the reliability. To prevent severe faults it is the key issue to identify the faults in the early stage before a complete failure happens. In this paper an early stage fault detection method using wavelet multi-resolution analysis (MRA) for a regulated buck DC-DC converter is studied. Specifically, the electrolyte input capacitor is diagnosed. The study was carried out using simulation with Modelica / Dymola. The fault features that were extracted from different levels of MRA decomposition provided clear information for both fast and slow occurring faults. This method showed significant advantages compared with filter technique. It is concluded that wavelet transform is a suitable tool for early stage fault detection of the power electronics in MEA. In addition, the simulation language Modelica provides a convenient possibility for the quick design of fault detection strategy.
Language:English
Keywords:power electronics, DC-DC converter, fault detection, wavelet, Modelica, Dymola
Year:2012
No. of pages:10
Pages:513-522
ISBN:978-91-7519-826-2
Series:Linköping Electronic Conference Proceedings
ISSN (print):1650-3686
ISSN (online):1650-3740
File:http://www.ep.liu.se/ecp/076/052/ecp12076052.pdf
Available:2012-11-19
Publisher:Linköping University Electronic Press, Linköpings universitet

REFERENCE TO THIS PAGE
Jianbo Gao, Yang Ji, Johann Bals, Ralph Kennel (2012). Fault Detection of Power Electronic Circuit using Wavelet Analysis in Modelica, Proceedings of the 9th International MODELICA Conference, September 3-5, 2012, Munich, Germany http://dx.doi.org/10.3384/ecp12076513 (accessed 9/1/2014)