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An original analytical expression of the maximum magnet thicknessin surface mounted permanent magnet motors

Published online by Cambridge University Press:  10 May 2007

F. Dubas ,
C. Espanet  and
A. Miraoui
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Abstract

An exact two-dimensional (2-D) analytical model (AM) of slotless permanent magnet (PM) machines in polar coordinates is used to determine the analytical equations of the air-gap flux density at no-load operation. The authors show that, for a radial magnetization, there is an optimal magnet thickness which permits to maximize the no-load flux density. In order to use easily and directly this optimal value during the design of surface mounted PM motors (SMPMM), the authors propose an original analytical expression of this maximum magnet thickness that have been obtained by interpolation of the values given by several analytical computations. This interpolation function could be applied to SMPMM having a parallel or radial magnetization direction.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 38 , Issue 2 , May 2007 , pp. 169 - 176
Copyright
© EDP Sciences, 2007

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References

F. Dubas, C. Espanet, A. Miraoui, International Agean Conference on Electrical Machines (ACEMP 04), 26–28 May 2004, Ïstanbul, Türkiye, pp.283–290
F. Dubas, C. Espanet, A. Miraoui, Conference on Electromagnetic Field Computation (CEFC 04), 6–9 June 2004, Seoul, Korea, p. 202
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C. Espanet, Modélisation et conception optimale de moteurs sans balais à structure inverse, Application au moteur-roue, Thesis of the University of Franche-Comté (UFC), Belfort, France, January 1999
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F. Dubas, C. Espane, A. Miraoui, IEEE Vehicular Power and Propulsion Conference (VPPC 05), 7–9 September 2005, Chicago, USA, pp. 603–610. This article gained a Prize Paper Hawards in the IEEE conference VPP in 2005