NDLI: Clamping diodes failure identification based on the discrete wavelet decomposition of the magnetic near-field

Content Provider	IET Digital Library
Author	Lahouar, Ali Hamouda, Mahmoud Abari, Ibtissem Slama, Jaleleddine Ben Hadj
Abstract	Diagnosis of static power converters for distributed power generation systems and electric machines is nowadays a common concern of researchers interested in the reliability of power electronic systems. The conventional diagnosis approaches such as those based on voltage, current, and flux analysis have already been well developed in recent decades. Recently, it was shown that the magnetic near-field measured above the power converter may carry substantial information about the health state of power components. This study proposes, therefore, a novel non-invasive diagnosis method based on the discrete wavelet decomposition of the near-field metered above a static power converter. It is proved that each faulty component can be identified by its appropriate electromagnetic signature. Accordingly, all faulty cases are easily distinguishable, which makes fault classification possible using very simple tools such as envelope detection. The proposed method is validated through experimental tests carried out on a three-phase three-level neutral point clamped inverter operating with faulty clamping diodes. Its advantages compared to previous diagnosis methods are also discussed.
Starting Page	1141
Ending Page	1148
Page Count	8
ISSN	17554535
Volume Number	12
e-ISSN	17554543
Issue Number	Issue 5, May (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/12/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.5043
Journal	IET Power Electronics
Publisher Date	2019-01-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Clamping Diodes Failure Identification Conventional Diagnosis Approach Discrete Wavelet Decomposition Distributed Power Generation Distributed Power Generation System Electric Machines Fault Diagnosis Faulty Clamping Diode Faulty Component Integral Transforms Invertors Knowledge Engineering Technique Magnetic Near-field Maintenance And Reliability Novel Noninvasive Diagnosis Method Power Component Power Converter Power Electronic System Power Electronics Power Supplies to Apparatus Previous Diagnosis Method Reliability Static Power Converter Statistics Wavelet Transform
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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