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Sensors 2010, 10(11), 10448-10466; doi:10.3390/s101110448
Article

An Online Universal Diagnosis Procedure Using Two External Flux Sensors Applied to the AC Electrical Rotating Machines

1,2,* , 1,2
,
1,2
 and
1,2
1 Univ Lille Nord de France, F-59000 Lille, France 2 LSEE, Faculté des Sciences Appliquées, technoparc futura, 62400 Bethune, France
* Author to whom correspondence should be addressed.
Received: 28 September 2010 / Revised: 27 October 2010 / Accepted: 10 November 2010 / Published: 18 November 2010
Download PDF [401 KB, 21 June 2014; original version 21 June 2014]

Abstract

This paper presents an original non-invasive procedure for the diagnosis of electromagnetic devices, as well as AC electrical rotating machines using two external flux coil sensors that measure the external magnetic field in the machines’ vicinity. The diagnosis exploits the signal delivered by the two sensors placed in particular positions. Contrary to classical methods using only one sensor, the presented method does not require any knowledge of a presumed machine’s healthy former state. On the other hand, the loading operating is not a disturbing factor but it is used to the fault discrimination. In order to present this procedure, an internal stator inter-turn short-circuit fault is considered as well.
Keywords: AC motors; fault diagnosis; magnetic field sensors; maintenance AC motors; fault diagnosis; magnetic field sensors; maintenance
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Pusca, R.; Romary, R.; Ceban, A.; Brudny, J.-F. An Online Universal Diagnosis Procedure Using Two External Flux Sensors Applied to the AC Electrical Rotating Machines. Sensors 2010, 10, 10448-10466.

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