Article (Scientific journals)
Progressive inductor modeling via a finite element subproblem method
Dular, Patrick; Krähenbühl, Laurent; Ferreira da Luz, Mauricio et al.
2015In COMPEL, 34 (3), p. 851-863
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Keywords :
Finite element methods; Eddy currents; Adaptive techniques; Decomposition method,; Inductors; Model refinement; Subproblem method
Abstract :
[en] Purpose – The purpose of this paper is to develop a subproblem method (SPM) for progressive modeling of inductors, with model refinements of both source conductors and magnetic cores. Design/methodology/approach – The modeling of inductors is split into a sequence of progressive finite element (FE) SPs. The source fields (SFs) generated by the source conductors alone are calculated at first via either the Biot-Savart (BS) law or FEs. With a novel general way to define the SFs via interface conditions (ICs), to lighten their evaluation process, the associated reaction fields for each added or modified region, mainly the magnetic cores, and in return for the source conductor regions themselves when massive, are then calculated with FE models. Changes of magnetic regions go from perfect magnetic properties up to volume linear and nonlinear properties, and from statics to dynamics. Findings – For any added or modified region, the novel proposed ICs to define the SFs appear of general usefulness, which opens the method to a wide range of model improvements. Originality/value – The resulting SPM allows efficient solving of parameterized analyses thanks to a proper mesh for each SP and the reuse of previous solutions to be locally corrected, in association with novel SF ICs that strongly lighten the quantity of BS evaluations. Significant corrections are progressively obtained for the fields, up to nonlinear magnetic core properties and skin and proximity effects in conductors, and for the related inductances and resistances.
Research center :
Applied and Computational Electromagnetics
Disciplines :
Electrical & electronics engineering
Author, co-author :
Dular, Patrick ;  Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Applied and Computational Electromagnetics (ACE)
Krähenbühl, Laurent;  Université de Lyon, Ecole Centrale de Lyon > Ampère
Ferreira da Luz, Mauricio;  Universidade Federal de Santa Catarina > GRUCAD
Kuo-Peng, Patrick;  Universidade Federal de Santa Catarina > GRUCAD
Geuzaine, Christophe  ;  Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Applied and Computational Electromagnetics (ACE)
Language :
English
Title :
Progressive inductor modeling via a finite element subproblem method
Publication date :
May 2015
Journal title :
COMPEL
ISSN :
0332-1649
eISSN :
2054-5606
Publisher :
Boole Press, Dublin, Ireland
Special issue title :
Modelling of magnetic and electric circuits
Volume :
34
Issue :
3
Pages :
851-863
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
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