Author(s): H. Hedia, A. Nicolet, F. Henrotte, A. Genon &
g between thermal and
University of Liege, Department of Electrical
Engineering, Institut Montefiore - Sart Tilman
The aim of this paper is to present a finite element method for solving magneto-
thermal coupled problem with a sinusoidal excitation.
In most cases, the thermal
time constant is higher than the magnetic time constant.
This allows to consider
the magnetic problem as quasi stationary and to uncouple the two time bases.
For the magnetic problem, a complex formulation is used while for the thermal
problem a step by step study is carried out using a semi explicit scheme where
the Joule effect and the electromagnetic properties are evaluated at the previous
The application of the method to an induction furnace is presented to show
Thermal effects are very important in electrical devices, as a principal effect
Size: 485 kb
Paper DOI: 10.2495/HT940441
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