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An improved magnetic reluctivity model is developed to describe two-dimensional magnetic properties of anisotropic material. In this model, the behavior of magnetic field intensity is explained in terms of magnitude and direction of magnetic flux density, and reluctivity tensor always has zero off-diagonals. The proposed reluctivity model is incorporated into nonlinear finite element formulation using Newton-Raphson method, and applied to magnetic field analysis of a single-phase transformer core model. By comparing the analyzedB-waveforms with experimental ones, the effectiveness of the proposed reluctivity model and FE formulation is investigated.
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Yoon et al. (2009) studied this question.
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