Evaluation of surface impedance of hysteretic materials

Author

Bertoncini, Francesco ; Cardelli, Ermanno ; Di Fraia, Sebastiano ; Tellini, Bernardo

Author_Institution

Dept. of Electr. Syst. & Autom., Univ. of Pisa, Italy

Volume

39

Issue

3

fYear

2003

fDate

5/1/2003 12:00:00 AM

Firstpage

1369

Lastpage

1372

Abstract

In this paper, a numerical procedure capable to analyze the nonlinear diffusion of the electromagnetic field into a hysteretic magnetic conductor half-space is presented. The result of such calculation allows for the evaluation of the surface impedance of the material and the formulation of nonlinear impedance boundary conditions. The procedure for calculating the surface impedance is based on the implementation of the modified scalar Preisach model (MSPM) in a finite difference implicit time domain (FDITD) algorithm. Simulations have been performed assuming as input source a periodic magnetic field linearly polarized at the plane interface.

Keywords

Maxwell equations; electromagnetic fields; finite difference time-domain analysis; magnetic hysteresis; surface impedance; electromagnetic field; finite difference implicit time domain; hysteretic materials; magnetic conductor half-space; modified scalar Preisach model; nonlinear diffusion; nonlinear impedance boundary conditions; periodic magnetic field; plane interface; surface impedance; Boundary conditions; Conducting materials; Electromagnetic analysis; Electromagnetic fields; Finite difference methods; Magnetic analysis; Magnetic fields; Magnetic hysteresis; Magnetic materials; Surface impedance;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2003.810364

Filename

1198476