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An Improved Engineering Model of Vector Magnetic Properties of Grain-Oriented Electrical Steels

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4 Author(s)
Yanli Zhang ; Sch. of Electr. Eng., Shenyang Univ. of Technol., Shenyang ; Young Hwan Eum ; Dexin Xie ; Chang Seop Koh

This paper presents an improved magnetic reluctivity model for vector magnetic properties of anisotropic electrical steel sheet based on Chua-type model using Fourier series expansion of measured B and H waveforms in the viewpoint of engineering application. In the modeling, B-spline surface interpolation is adopted to obtain smooth approximation of measured data. The accuracy of the proposed magnetic reluctivity model is verified by comparing its modeling results with experimentally measured B- and H-waveforms with 30 PG110 grain-oriented silicon steel sheet. The nonlinear finite element (FE) formulation is also derived to incorporate the proposed reluctivity model, and applied to magnetic field analysis of a single phase transformer core model. By comparing the numerical results with experimental ones, the effectiveness of the reluctivity model and FE formulation is investigated.

Published in:

Magnetics, IEEE Transactions on  (Volume:44 ,  Issue: 11 )