Analysis of Magnetic Characteristic in the Three-Phase Transformer Core Considering Two-Dimensional Magnetic Anisotropic Property

摘要

This paper presents a magnetic reluctivity tensor model considering the two-dimensional magnetic anisotropy of the Grain-oriented electrical steel sheet from the point of view of numerical implementation, in which the behavior of magnetic field intensity is explained in terms of magnitude and direction of magnetic flux density, and reluctivity tensor is derived into zero off-diagonals. The finite element formulation for considering the magnetic reluctivity tensor model is also derived. The model is applied to finite element analysis of transformer cores and the computed results are compared with traditional anisotropic model.