A new nonlinear anisotropic model for soft magnetic materials

Author

Lin, D. ; Zhou, P. ; Badics, Z. ; Fu, W.N. ; Chen, Q.M. ; Cendes, Z.J.

Author_Institution

Ansoft Corp., Pittsburgh, PA

Volume

42

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

963

Lastpage

966

Abstract

An accurate and efficient nonlinear anisotropic model for soft magnetic materials is developed. In this model, the cross effects of the magnetic field in the different principle directions are decoupled by introducing an equivalent magnetic field magnitude in each principle direction. This equivalence is based on an anisotropic characterization of the energy density. Only B-H curves in the principal directions of the materials-two curves in two-dimensions or three curves in three-dimensions-need to be measured. The anisotropic behavior of laminations with either isotropic or anisotropic steel is also considered. The model is validated by numerical experiments and is applied to three-dimensional finite element analysis of a synchronous reluctance motor with an axially laminated anisotropic rotor

Keywords

anisotropic media; finite element analysis; laminations; magnetic anisotropy; magnetic field effects; reluctance motors; rotors; soft magnetic materials; steel; 3D finite element analysis; B-H curves; anisotropic characterization; anisotropic steel; axially laminated anisotropic rotor; energy density; equivalent magnetic field magnitude; isotropic steel; magnetic field effects; nonlinear anisotropic model; soft magnetic materials; synchronous reluctance motor; Anisotropic magnetoresistance; Finite element methods; Lamination; Magnetic analysis; Magnetic anisotropy; Magnetic field measurement; Magnetic materials; Rotors; Soft magnetic materials; Steel; Axially laminated anisotropic (ALA) rotor; lamination; nonlinear anisotropy; soft magnetic; transient finite element analysis (FEA);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.871380

Filename

1608368