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Cross magnetisation effects in electrical machines

Tavner, P.J.

Authors

P.J. Tavner



Abstract

Examples of cross-magnetisation effects in electrical machines are collated and the physical characteristics of the phenomena are reviewed qualitatively. New experimental results to clarify the phenomena are introduced. This subject has also been called a cross-axis, cross-magnetisation, cross-saturation, intersaturation or cross-reactance effect. Cross-magnetisation encompasses the magnetic behaviour of saturable machine materials when the vector of the main magnetomotive force (MMF) is applied in a direction that is not geometrically or analytically favoured in the magnetic structure of the machine. The phenomenon is important because it controls the magnetic behaviour of components that are closest to the highest field strengths in operating machines. A number of cases in electrical machines where this can occur are considered and conclusions drawn. These can be used to allow the cross-magnetisation effects from field calculations of electrical machines to be quantitatively represented and qualitatively explained, particularly for machines of unusual topology, in which key components are not subjected to a magnetic field in the preferred direction.

Citation

Tavner, P. (2004). Cross magnetisation effects in electrical machines. IEE proceedings. Electric power applications, 151(3), 249-259. https://doi.org/10.1049/ip-epa%3A20040345

Journal Article Type Article
Publication Date 2004-05
Deposit Date May 30, 2008
Journal IEE proceedings. Electric power applications.
Print ISSN 1350-2352
Electronic ISSN 1359-7043
Publisher IET
Peer Reviewed Peer Reviewed
Volume 151
Issue 3
Pages 249-259
DOI https://doi.org/10.1049/ip-epa%3A20040345