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Quantification of magnetostriction for analysis of vibration of electrical machine cores

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4 Author(s)
Sakda Somkun ; Institute of Energy, Cardiff University, United Kingdom ; Anthony J. Moses ; Philip I. Anderson ; Piotr Klimczyk

Magnetostriction in non-oriented electrical steel is a source of vibration of electrical machine cores. This paper covers measurements of magnetostriction in a disc sample of non-oriented electrical steel under unidirectional and two-dimensional magnetisation conditions, close to those occurring in electrical machine stator cores for use in analysis of core vibration. A comparison with magnetostriction measured in conventional Epstein strips is presented. The characterisation of magnetostriction of the disc sample provides better versatility under closer magnetisation conditions present in machine cores.

Published in:

Universities Power Engineering Conference (UPEC), 2010 45th International

Date of Conference:

Aug. 31 2010-Sept. 3 2010