Treatment of unbounded skin-effect problems in the presence of material inhomogeneities

Author

Aiello, G. ; Alfonzetti, S. ; Coco, S. ; Salerno, Nunzio

Author_Institution

Dipartimento Elettrico Elettronico e Sistemistico, Catania Univ., Italy

Volume

31

Issue

3

fYear

1995

fDate

5/1/1995 12:00:00 AM

Firstpage

1504

Lastpage

1507

Abstract

An iterative finite-element procedure is described for the solution of skin-effect problems, under the assumption of quasi-static TEM conditions. The systems considered consist of parallel straight conductors of arbitrary cross section, with inhomogeneous conductivity and permeability, embedded in an unbounded homogeneous dielectric medium. A fictitious boundary enclosing all the conductors is introduced; an initial guess for the magnetic vector potential is assumed on this boundary and is iteratively improved according to the Laplacian behaviour of the potential outside the conductors. An example of application to a simple transmission line is given

Keywords

conductors (electric); electromagnetic field theory; finite element analysis; iterative methods; skin effect; transmission line theory; FEM; inhomogeneous conductivity; inhomogeneous permeability; iterative finite-element procedure; magnetic vector potential; material inhomogeneities; parallel straight conductors; quasistatic TEM conditions; transmission line; unbounded homogeneous dielectric medium; unbounded skin-effect problems; Conducting materials; Conductivity; Conductors; Dielectrics; Finite element methods; Integral equations; Laplace equations; Magnetic materials; Permeability; Transmission lines;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.376315

Filename

376315