Multi-scale FEM and magnetic vector potential A for 3D eddy currents in laminated media
ISSN: 0332-1649
Article publication date: 7 September 2015
Abstract
Purpose
The purpose of this paper is an accurate computation of eddy currents in laminated media with minimal computer resources.
Design/methodology/approach
Modeling each laminate of the laminated core of electrical devices requires prohibitively many finite elements (FEs). To overcome this restriction a higher order multi-scale FE method with the magnetic vector potential
A
has been developed to cope with 3D problems considering edge effects.
Findings
The multi-scale FE approach facilitates an accurate simulation of the eddy current losses with minimal computer resources. Numerical simulations demonstrate a remarkable accuracy and low computational costs. The effect of regularization on the results is shown.
Practical implications
The eddy current losses are of great interest in the design of electrical devices with laminated cores.
Originality/value
The multi-scale FE approach takes also into account of the edge effects in 3D.
Keywords
Citation
Hollaus, K. and Schöberl, J. (2015), "Multi-scale FEM and magnetic vector potential A for 3D eddy currents in laminated media", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 34 No. 5, pp. 1598-1608. https://doi.org/10.1108/COMPEL-02-2015-0090
Publisher
:Emerald Group Publishing Limited
Copyright © 2015, Emerald Group Publishing Limited