Mathematical Problems in Engineering
Volume 7 (2001), Issue 2, Pages 113-128

Modelling the electromagnetic behaviour of sife alloys using the Preisach theory and the principle of loss seperation

L. Dupré,1,3 R. Van Keer,2 and J. Melkebeek1

1Department of Electrical Engineering, Ghent University, Gent B-9000, Belgium
2Department of Mathematical Analysis, Ghent University, Gent B-9000, Belgium
3Department of Electrical Power Engineering, Laboratory for electrical machines and power electronics, St. Pietersnieuwstraat 41, Gent B-9000, Belgium

Received 9 August 2000

Copyright © 2001 L. Dupré et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In this paper we present 2 simplified methods for the evaluation of magnetisation loops in laminated SiFe alloys, using the Preisach theory and the statistical loss theory. These methods are investigated in detail as a practical alternative for a very accurate, but much involved numerical approach, viz a combined lamination model – dynamic Preisach model earlier developed by the authors. Particularly, one of the 2 methods provides accurate results inspite of a dramatic reduction of the CPU-time in comparison with the earlier developed combined model. For the other simplified method, the reduction of CPU-time is less pronounced but still considerable and the results are fairly good.