The Effect of Laminated Structure on Coupled Magnetic Field and Mechanical Analyses of Iron Core and Its Homogenization Technique
The Effect of Laminated Structure on Coupled Magnetic Field and Mechanical Analyses of Iron Core and Its Homogenization Technique
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DOI：
10.1109/tmag.2010.2072777
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发表时间：
2010-05
影响因子：
2.1
通讯作者：
Yanhui Gao;K. Muramatsu;M. J. Hatim;M. Nagata
中科院分区：
文献类型：
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作者：
Yanhui Gao;K. Muramatsu;M. J. Hatim;M. Nagata
为了研究电机的降噪问题，必须进行磁场和机械的耦合分析。本文提出了在磁场与力学耦合分析中考虑叠层结构的等效各向异性参数的均匀铁心模型来模拟叠层铁心的方法，并研究了叠层结构对耦合分析的影响。得到了真实的叠片铁芯模型、忽略叠片结构的实心铁芯模型和考虑叠片结构的均质铁芯模型的磁通密度、电磁和磁致伸缩节点力以及与这些力对应的位移的分布，并进行了比较。结果表明，在磁场分析和力学分析中，叠层结构都不能忽略，由均匀模型得到的位移分布与真实的模型吻合较好。
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.