A 3-D magnetic vector potential formulation taking eddy currents in lamination stacks into account

Author

Dular, Patrick ; Gyselinck, Johan ; Geuzaine, Christophe ; Sadowski, Nelson ; Bastos, J.P.A.

Author_Institution

Dept. of Electr. Eng., Univ. of Liege, Belgium

Volume

39

Issue

3

fYear

2003

fDate

5/1/2003 12:00:00 AM

Firstpage

1424

Lastpage

1427

Abstract

A method is developed to take the eddy currents in lamination stacks into account with the finite-element method using the three-dimensional (3-D) magnetic vector potential magnetodynamic formulation. It consists in converting the stacked laminations into continuums with which terms are associated for considering the eddy-current loops produced by both parallel and perpendicular fluxes. Two levels of accuracy are proposed. The best one is based on an accurate analytical expression of the eddy currents and makes the method adapted to a wide-frequency range, i.e., even for low skin depths in the laminations.

Keywords

Maxwell equations; cores; current density; eddy currents; finite element analysis; laminations; magnetic flux; 3D magnetic vector potential formulation; FEM; LF model; eddy current loops; finite-element method; lamination stacks; low-frequency model; magnetodynamic formulation; parallel fluxes; perpendicular fluxes; Conductors; Current density; Eddy currents; Finite element methods; Lamination; Magnetic analysis; Magnetic flux; Magnetic separation; Skin; Testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2003.810386

Filename

1198490