Fast computation of quasi-static magnetic fields around nonperfectly conductive shields

Author

Feliziani, M. ; Maradei, F.

Author_Institution

Dept. of Electr. Eng., l´´Aquila Univ., Italy

Volume

34

Issue

5

fYear

1998

fDate

9/1/1998 12:00:00 AM

Firstpage

2795

Lastpage

2798

Abstract

A prediction model of low frequency, low impedance magnetic fields around conductive shield configurations in presence of arbitrary sources is proposed. The new model is based on the elimination of the shield barrier from the computational domain and consists in the application of impedance network boundary conditions (INBCs) on the shield surfaces which permits one to take into account the field discontinuity produced by the nonperfectly conductive region. The derivation of the INBCs on the shield surfaces is discussed in terms of the magnetic vector potential

Keywords

electromagnetic compatibility; finite element analysis; magnetic fields; magnetic shielding; arbitrary sources; computational domain; conductive shield configurations; field discontinuity; impedance network boundary conditions; low impedance magnetic fields; magnetic vector potential; nonperfectly conductive shields; prediction model; quasi-static magnetic fields; shield barrier; Boundary conditions; Computer networks; Current density; Finite element methods; Frequency; Magnetic analysis; Magnetic domains; Magnetic shielding; Predictive models; Surface impedance;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.717650

Filename

717650