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Analysis and Measurements of Iron Loss and Flux Inside Silicon Steel Laminations

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11 Author(s)
Zhiguang Cheng ; R&D Center, Baoding Tianwei Group Co., Ltd., Baoding ; Takahashi, N. ; Forghani, B. ; Gilbert, G.
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This paper investigates an efficient macroscopic modeling method for laminated iron cores made of grain-oriented silicon steel sheets. Under actual operating conditions, the material exhibits nonlinearity as well as a strong anisotropy resulting in a nonuniform distribution of the iron loss and the flux within each lamination. The presented results, based on a benchmark problem, are helpful in building a finite element model that takes into account the effects of the eddy current, induced by the magnetic field normal to the sheets, on the total iron loss and the distortion of the local magnetic flux in the laminations adjacent to the exciting coils, even though both the total flux inside the entire lamination stack and the source voltage are sinusoidal.

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Magnetics, IEEE Transactions on  (Volume:45 ,  Issue: 3 )