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Perturbation Finite Element Method for Magnetic Model Refinement of Air Gaps and Leakage Fluxes

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5 Author(s)
Dular, P. ; Dept. of Electr. Eng. & Comput. Sci., Univ. of Liege, Liege ; Sabariego, R.V. ; Ferreira da Luz, M.V. ; Kuo-Peng, P.
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Model refinements of magnetic circuits are performed via a subproblem finite element method based on a perturbation technique. An approximate problem considering ideal flux tubes and simplified air-gap models is first solved. It gives the sources for a finite element perturbation problem considering the actual air gaps and flux tubes geometries with the exterior regions. The procedure simplifies both meshing and solving processes, and allows to quantify the gain given by each model refinement.

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Magnetics, IEEE Transactions on  (Volume:45 ,  Issue: 3 )