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Using the FEM Meshes Adaption and Genetic Algorithms for Identification of Permeability in Normal Direction of Anisotropic Sheets

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6 Author(s)
Komeza, K. ; Inst. of Mechatron. & Inf. Syst., Tech. Univ. of Lodz, Lodz, Poland ; Juszczak, E.N. ; Di Barba, P. ; Napieralski, P.
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This paper proposes the identification of the B-H curve of anisotropic magnetic laminations in the direction normal to the sheet surface. An automated procedure for linking an identification algorithm implemented in a Matlab environment with a commercial finite-element code Opera for 3-D magnetic field analysis has been used. In particular, an optimization procedure is proposed, where the computation time is reduced by adjusting the refinement of the FEM mesh. The use of a multiprocessor computer allowed to perform parallel computations and to realize the calculation in a reasonable time. The finite element mesh density is changed during operation of the procedure depending on the level of magnetic flux density difference between calculation and measurements.

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Magnetics, IEEE Transactions on  (Volume:48 ,  Issue: 2 )