A nonlinear time-domain homogenization technique for laminated iron cores in three-dimensional finite-element models

Author

Gyselinck, J. ; Sabariego, R.V. ; Dular, P.

Author_Institution

Dept. of Electr. Eng., Univ. Libre de Bruxelles, Brussels

Volume

42

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

763

Lastpage

766

Abstract

The authors present a novel nonlinear homogenization technique for laminated iron cores in three-dimensional (3-D) finite-element (FE) models of electromagnetic devices. The technique takes into account the eddy current effects in the stacked core without the need of modeling all laminations separately. A nonlinear constitutive magnetic law is considered. The system of nonlinear algebraic equations obtained after time discretization is solved by means of the Newton-Raphson scheme. By way of validation, the method is applied to a 3-D FE model of a laminated ring core with toroidal coil

Keywords

Newton-Raphson method; eddy currents; electromagnetic devices; finite element analysis; laminations; nonlinear equations; time-domain analysis; 3D finite-element models; Newton-Raphson scheme; eddy currents; electromagnetic devices; laminated iron cores; lamination stack; nonlinear algebraic equations; nonlinear time-domain homogenization; time discretization; toroidal coil; Eddy currents; Electromagnetic devices; Electromagnetic modeling; Finite element methods; Iron; Lamination; Magnetic cores; Magnetic separation; Time domain analysis; Toroidal magnetic fields; Eddy currents; finite-element methods (FEMs); homogenization; lamination stack;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.872034

Filename

1608318