An improved modified surface impedance for transverse electric problems

Author

Aymard, N. ; Féliachi, M. ; Paya, B.

Author_Institution

LRTI-GE44, Saint-Nazaire, France

Volume

33

Issue

2

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

1267

Lastpage

1270

Abstract

A 1D approximation is the basis of the impedance boundary condition (IBC). We review the use of the IBC conditions and present the errors which occur if those approximations are not checked. For an edge in the transverse electric case, we propose a modified surface impedance that we derive with the exact 2D analytical solution of the electromagnetic problem, and we compare it with the classical impedance and with another solution proposed in publication. We show that this impedance is not always necessary. This study can be used to model induction devices, such as a plasma torch

Keywords

approximation theory; electric fields; electric impedance; electromagnetic induction; plasma torches; 1D approximation; classical impedance; electromagnetic problem; errors; exact 2D analytical solution; impedance boundary condition; induction devices; modified surface impedance; plasma torch; transverse electric problems; Conducting materials; Conductors; Geometry; Magnetic fields; Magnetic flux; Magnetic materials; Permeability; Reactive power; Skin; Surface impedance;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.582485

Filename

582485