Article (Scientific journals)
A time-domain homogenization technique for laminated iron cores in 3-D finite-element models
Gyselinck, Johan; Dular, Patrick
2004In IEEE Transactions on Magnetics, 40 (2, Part 2), p. 856-859
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Keywords :
Eddy currents; finite-element methods (FEMs); homogenization; lamination stack
Abstract :
[en] The authors present a novel time-domain homogenization technique for laminated iron cores in three-dimensional (3-D) FE models of electromagnetic devices when using the magnetic vector potential formulation. The method is based on a polynomial orthogonal decomposition of the variation of the induction throughout the thickness of the laminations. The nonconstant components, due to skin effect, produce additional degrees of freedom and equations for the homogenized core. Insulating layers of finite width between the laminations (fill factor < 1) are taken into account as well. A linear 3-D axisymmetric test case is considered. The results agree well with those obtained with the reference model, in which all laminations are finely discretized and the eddy currents are directly modeled.
Disciplines :
Electrical & electronics engineering
Physics
Author, co-author :
Gyselinck, Johan
Dular, Patrick ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Applied and Computational Electromagnetics (ACE)
Language :
English
Title :
A time-domain homogenization technique for laminated iron cores in 3-D finite-element models
Publication date :
March 2004
Journal title :
IEEE Transactions on Magnetics
ISSN :
0018-9464
eISSN :
1941-0069
Publisher :
Ieee-Inst Electrical Electronics Engineers Inc, Piscataway, United States - New Jersey
Volume :
40
Issue :
2, Part 2
Pages :
856-859
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
F.R.S.-FNRS - Fonds de la Recherche Scientifique
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