Mathematical Problems in Engineering 
Volume 3 (1997), Issue 3, Pages 267-286
doi:10.1155/S1024123X97000574

A 2D finite element procedure for magnetic field analysis taking into account a vector Preisach model

Luc R. Dupré,1 Roger Van Keer,2 and Jan A. A. Melkebeek1

1Department of Electrical Power Engineering, University of Gent, Sint-Pietersnieuwstraat 41, Gent B-9000, Belgium
2Department of Mathematical Analysis, University of Gent, Galglaan 2, Gent B-9000, Belgium

Received 1 July 1996

Abstract

The main purpose of this paper is to incorporate a refined hysteresis model, viz. a vector Preisach model, in 2D magnetic field computations. To this end the governing Maxwell equations are rewritten in a suitable way, which allows to take into account the proper magnetic material parameters and, moreover, to pass to a variational formulation. The variational problem is solved numerically by a FE approximation, using a quadratic mesh, followed by the time discretisation based upon a modified Cranck Nicholson algorithm. The latter includes a suitable iteration procedure to deal with the nonlinear hysteresis behaviour. Finally, the effectiveness of the presented mathematical tool has been confirmed by several numerical experiments.