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Eddy-current formulation for constructing transmission-line models for machine windings ***

Published online by Cambridge University Press:  03 February 2010

H. De Gersem ,
O. Henze ,
T. Weiland  and
A. Binder
H. De Gersem*
Affiliation:
Katholieke Universiteit Leuven, Faculty of Science, Belgium
O. Henze
Affiliation:
Technische Universität Darmstadt, Institut für Theorie Elektromagnetischer Felder, Germany
T. Weiland
Affiliation:
Technische Universität Darmstadt, Institut für Theorie Elektromagnetischer Felder, Germany
A. Binder
Affiliation:
Technische Universität Darmstadt, Institut für Elektrische Energiewandlung, Germany
*
herbert.degersem@kuleuven-kortrijk.be
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Abstract

In this paper, an eddy-current formulation is used to determine the transmission-line parameters of a machine winding. It is shown that this formulation covers a broader frequency range than the commonly used low-frequency magnetostatic and high-frequency magnetodynamic approximations. The eddy-current formulation, however, suffers from large computation times and may lead to severe inaccuracies if the finite-element mesh does not resolve the skin depth, a modelling concern that does not exist for the traditional formulations. The three finite-element models are compared according to the accuracy of the resulting transmission-line model applied to the winding of a permanent-magnet synchronous machine.


Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 49 , Issue 3: Focus on Metamaterials , March 2010 , 31101
Copyright
© EDP Sciences, 2010

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Footnotes

*

This article has been submitted as part of “NUMELEC 2008 – 6e Conférence Européenne sur les Méthodes Numériques en Électromagnétisme”, 8–10 December 2008, Liège

**

This work has been carried out in the collaborative research group (Forschergruppe 575) “High-frequency parasitic effects in inverter-fed electrical drives” funded by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG).

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