Benchmark calculations of magnetic shielding at low frequencies

Author

Happ, Fabian ; Bruns, Heinz-Dietrich ; Gronwald, Frank

Author_Institution

Inst. of Electromagn. Theor., Tech. Univ. Hamburg, Hamburg, Germany

fYear

2014

fDate

1-4 Sept. 2014

Firstpage

468

Lastpage

473

Abstract

In this paper the shielding against magnetic fields at frequencies between 1 kHz and 10MHz is investigated. Different methods to calculate the magnetic field inside of closed geometries are compared where three canonical shielding geometries with known analytical solutions are used as numerical benchmarks. By means of a number of examples these benchmark calculations are considered both in frequency and time domain. The results can be taken as reference for EMC modelling software that is used to properly take into account magnetic shielding properties at low frequencies.

Keywords

frequency-domain analysis; magnetic fields; magnetic shielding; method of moments; time-domain analysis; EMC modelling software; canonical shielding geometries; frequency domain; magnetic fields; magnetic shielding; numerical benchmarks; time domain; Conductivity; Geometry; Magnetic domains; Magnetic noise; Magnetic shielding; Method of moments; Surface impedance; Benchmark testing; Magnetic shielding; Method of moments; Numerical models; Surface impedance;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility (EMC Europe), 2014 International Symposium on

Conference_Location

Gothenburg

Type

conf

DOI

10.1109/EMCEurope.2014.6930952

Filename

6930952