An effective reluctivity model for nonlinear and anisotropic materials in time-harmonic finite element computations

Author

Sande, Hans Vande ; Henrotte, François ; Gersem, Herbert De ; Hameyer, Kay

Author_Institution

Airtec Div., Atlas Copco Airpower n.v., Wilrijk, Belgium

Volume

41

Issue

5

fYear

2005

fDate

5/1/2005 12:00:00 AM

Firstpage

1508

Lastpage

1511

Abstract

In time-harmonic finite element analysis, the nonlinear behavior of soft-magnetic materials is often modeled by effective reluctivity curves, to account for the time-dependence of the reluctivity during one cycle of the applied sinusoidal signal. In this paper, the effective reluctivity concept is generalized in such a way, that nonlinear and anisotropic materials can be modeled as well. The model is used to simulate the flux line distribution and the loss distribution in a three-phase transformer under no-load operation.

Keywords

anisotropic media; finite element analysis; magnetic flux; nonlinear media; soft magnetic materials; anisotropic materials; effective reluctivity curve; flux line distribution; loss distribution; no-load operation; nonlinear magnetics; nonlinear materials; sinusoidal signal; soft-magnetic materials; three-phase transformer; time-dependency; time-harmonic finite element computation; Anisotropic magnetoresistance; Current density; Finite element methods; Magnetic anisotropy; Magnetic flux; Magnetization; Nonlinear equations; Perpendicular magnetic anisotropy; Tensile stress; Time domain analysis; Anisotropic media; finite element methods; harmonic analysis; nonlinear magnetics;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.845077

Filename

1430896