Time domain finite element simulation of conductive regions

Author

Celozzi, S. ; Feliziani, M.

Author_Institution

Dept. of Electr. Eng., Rome Univ., Italy

Volume

29

Issue

2

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

1705

Lastpage

1710

Abstract

Transient magnetic fields are analyzed in the time domain by using the finite-element method (FEM) in space and the finite-difference method in time. Conductive regions are eliminated from the domain under examination by imposing impedance boundary conditions on the surfaces separating conductive and nonconductive regions. In the time domain, the impedance boundary conditions are represented by a convolution integral in which the transient surface admittance appears whose expression can be obtained analytically by the inverse Laplace transform. A 2-D numerical procedure is presented for the solution of the integral equation deriving from the application of surface impedance boundary conditions

Keywords

Laplace transforms; eddy currents; electromagnetic field theory; finite difference time-domain analysis; finite element analysis; integral equations; transients; 2D numerical method; FEM; conductive regions; convolution integral; eddy current; finite-difference method; finite-element method; integral equation; inverse Laplace transform; surface impedance boundary conditions; time domain finite element simulation; transient magnetic field; transient surface admittance; Boundary conditions; Convolution; Finite difference methods; Finite element methods; Integral equations; Magnetic analysis; Magnetic fields; Surface impedance; Time domain analysis; Transient analysis;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.250734

Filename

250734