Hollaus, K., & Schöberl, J. (2022). A Higher Order Multi-Scale FEM With A for 2-D Eddy Current Problems in Laminated Iron. IEEE Transactions on Magnetics, 51(3), Article 7093479. https://doi.org/10.1109/TMAG.2014.2360075
E101-03-1 - Forschungsgruppe Computational Mathematics in Engineering
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Journal:
IEEE Transactions on Magnetics
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ISSN:
0018-9464
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Date (published):
2022
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Number of Pages:
4
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Publisher:
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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Peer reviewed:
Yes
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Keywords:
Eddy currents; higher order multi-scale finite element methods (MSFEMs); laminates; non-linear materials; numerical simulation
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Abstract:
The simulation of eddy currents in laminated iron cores by the finite element method (FEM) is of great interest in the design of electrical machines and transformers. The overall dimensions of an iron core and the thickness of the laminates are very different. An FE model, which considers each laminate, requires many FEs leading to extremely large systems of equations and prohibitively high-computational costs. An efficient and arbitrarily accurate approximation of the main magnetic flux, which is parallel to the laminates, across the lamination with penetration depths significantly smaller than the thickness of the laminates is the focus of this paper. A higher order multi-scale FEM has been developed. Material properties are assumed to be non-linear. Numerical simulations demonstrate the excellent accuracy and very low computational costs.
