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An Energy-Compliant Magnetodynamic Error Criterion for Eddy-Current Calculations

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3 Author(s)
Rondot, L. ; CEDRAT, Meylan, France ; Mazauric, V.G. ; Wendling, P.F.

In order to improve the finite element modeling of macroscopic eddy currents, a quadratic energy-based error criterion is obtained from a thermodynamic description of electromagnetism. Attention is first paid on the analytical derivation of the criterion in a general sense-i.e. without any assumption about the potential formulation and including possible body motion-especially to validate its relevance in 2D or 3D and to stress its independence from the formulation or the kind of application. Preliminary validation is given on a Thomson's effect device: As expected, the state functions provide the global convergence of the calculation within an iterative procedure whereas the conservation of the electromagnetic power is assessed locally to highlight the ill-checked elements.

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Magnetics, IEEE Transactions on  (Volume:46 ,  Issue: 6 )