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The Effect of Laminated Structure on Coupled Magnetic Field and Mechanical Analyses of Iron Core and Its Homogenization Technique

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4 Author(s)
Yanhui Gao ; Dept. of Electr. & Electron. Eng., Saga Univ., Saga, Japan ; Muramatsu, K. ; Hatim, M.J. ; Nagata, M.

To investigate the noise reduction for an electrical machine, coupled magnetic field and mechanical analyses should be carried out. In this paper, the method of modeling the laminated core using a homogeneous core model with equivalent anisotropic parameters considering the laminated structure in the coupled magnetic field and mechanical analyses is proposed and the effect of the laminated structure on the coupled analysis is investigated. The distributions of the flux densities, nodal forces by electromagnetism and magnetostriction, and displacements corresponding to these forces of the real laminated iron core model, the solid core model neglecting the laminated structure and the homogeneous core model considering the laminated structure are obtained and compared. It is shown that the laminated structure cannot be neglected in both the magnetic field and mechanical analyses and the displacement distribution obtained from the homogeneous model is in good agreement with the real model.

Published in:

Magnetics, IEEE Transactions on  (Volume:47 ,  Issue: 5 )

Date of Publication:

May 2011

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