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Diagnostic des machines électriques par l'analyse du champ magnétique de fuite. Application à l'identification de défauts rotoriques d'un alternateur à vide

Abstract : Adiagnosis method of the electrical machines based on the magnetic flux leakage and on the inverse approach is proposed. We developped a direct modelling tool allowing to compute the 3D magnetic flux leakage of the machine. Several numerical methods were studied (finite elements, magnetic moment, boundary integral...). A precise, light and original model was developed. The inverse approach consisted of finding the distribution of flux in the machine airgap according to the measurements of the field outside. We have showed that this approach allows the discrimination, the localization and the quantification of the relevant faults. Finally, our approach was experimentally, validated thanks to the instrumentation of a model of synchronous machine (30k VA, 4 poles) associated with a system of magnetic field sensors Fluxgate.
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https://tel.archives-ouvertes.fr/tel-00187238
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Submitted on : Wednesday, November 14, 2007 - 9:28:20 AM
Last modification on : Thursday, November 19, 2020 - 1:00:26 PM
Long-term archiving on: : Monday, June 27, 2011 - 4:52:55 PM

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Viet Phuong Bui. Diagnostic des machines électriques par l'analyse du champ magnétique de fuite. Application à l'identification de défauts rotoriques d'un alternateur à vide. Energie électrique. Institut National Polytechnique de Grenoble - INPG, 2007. Français. ⟨tel-00187238⟩

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