Title :
Complex representation in nonlinear time harmonic eddy current problems
Author :
Paoli, Gerhard ; Biro, Oszkar ; Buchgraber, Gerhard
Author_Institution :
IGTE, Tech. Univ. of Graz, Austria
fDate :
9/1/1998 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
