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Wide frequency range analysis of the electromagnetic emissions of electrical machine for diagnosis*

Published online by Cambridge University Press:  30 April 2008

R. Romary ,
D. Roger  and
J. F. Brudny
R. Romary*
Affiliation:
LSEE-Université d'Artois, Technoparc future, 62400 Béthune, France
D. Roger
Affiliation:
LSEE-Université d'Artois, Technoparc future, 62400 Béthune, France
J. F. Brudny
Affiliation:
LSEE-Université d'Artois, Technoparc future, 62400 Béthune, France
*
[email protected]

Abstract

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The paper presents the possibilities to evaluate the health of an electrical machine by analyzing its electromagnetic emissions. Different piece of information can be detected according to the frequency range. First of all, a monitoring system sensitive to the degradation of the turn-to-turn insulation quality of the stator winding is presented; it is based on high frequency electromagnetic emissions. The second part of the paper is based on the medium and low frequency emission analysis. It explains how to detect turn-to-turn short circuits in stator windings or in the excitation coils of synchronous machines.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 43 , Issue 2: Reliability in Electromagnetic Systems (IET) , August 2008 , pp. 165 - 172
Copyright
© EDP Sciences, 2008

Footnotes

*

This article has been submitted as part of “IET –Colloquium on Reliability in Electromagnetic Systems”, 24 and 25 May 2007, Paris

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