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Eddy-current-effect homogenization of windings in harmonic-balance finite-element models coupled to nonlinear circuits

par Sabariego, Ruth;Niyomsatian, Korawich ;Gyselinck, Johan
Référence IEEE transactions on magnetics, 54, 3, 8057577
Publication Publié, 2018

Article révisé par les pairs

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Résumé :

This paper deals with the harmonic-balance (HB) finite-element (FE) analysis of a multi-turn winding device coupled to electrical circuits comprising nonlinear components. The eddy-current effects in the windings are accounted for via a frequency-dependent reluctivity and impedance determined with a homogenization technique. The proposed multi-frequency approach is validated through a single-phase four-diode rectifier with an axisymmetric FE model of an inductor. The system of nonlinear algebraic equations is solved by means of the Newton-Raphson method. The HB results are validated with classical time-stepping simulations. The computational cost is briefly discussed.