Complex representation in nonlinear time harmonic eddy current problems

Author

Paoli, Gerhard ; Biro, Oszkar ; Buchgraber, Gerhard

Author_Institution

IGTE, Tech. Univ. of Graz, Austria

Volume

34

Issue

5

fYear

1998

fDate

9/1/1998 12:00:00 AM

Firstpage

2625

Lastpage

2628

Abstract

Several possibilities are presented to deal with nonlinearity in ferromagnetic media in the case of time harmonic excitation in steady state, without losing simplicity in describing the potentials by means of complex peak values. The main idea is to introduce a fictitious time independent and inhomogeneous material to take into account the nonlinear relationship between the field quantities. Four methods are shown and investigated on a 3D time harmonic eddy current problem, using the T,Φ-Φ finite element formulation. The vector potential is represented by means of edge elements and the scalar potential by nodal elements. The results obtained are compared with transient computation

Keywords

eddy currents; finite element analysis; frequency-domain analysis; harmonics; magnetisation; transients; complex peak values; edge elements; ferromagnetic media; field quantities; inhomogeneous material; nodal elements; nonlinear time harmonic eddy current problems; scalar potential; transient computation; Eddy currents; Finite element methods; Frequency domain analysis; Linearity; Magnetic materials; Nonlinear magnetics; Saturation magnetization; Shape; Steady-state; Vectors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.717607

Filename

717607