Proposal for a benchmark model of a laminated iron core and a large‐scale and highly accurate magnetic analysis |
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| Authors: | Yasuhito Takahashi Shinji Wakao Koji Fujiwara Hiroyuki Kaimori Akihisa Kameari |
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| Affiliation: | 1. Kyoto University, Japan;2. Waseda University, Japan;3. Doshisha University, Japan;4. Science Solutions International Laboratory, Inc., Japan |
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| Abstract: | This paper describes a benchmark model proposed for the clarification of the characteristic of various methods for modeling the laminated iron core. In order to obtain a reference solution of the benchmark model, a large‐scale nonlinear magnetostatic field analysis with a mesh fine enough to represent the microscopic structure of the laminated iron core is carried out by using the hybrid finite element–boundary element (FE‐BE) method combined with the fast multipole method (FMM) based on diagonal forms for translation operators. The computational costs and accuracy of two kinds of homogenization methods are discussed, comparing them with the reference solution. As a consequence, it is verified that the homogenization methods can analyze magnetic fields in laminated iron core within acceptable computational costs. © 2009 Wiley Periodicals, Inc. Electr Eng Jpn, 170(1): 26–35, 2010; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20809 |
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| Keywords: | laminated iron core nonlinear analysis hybrid finite element– boundary element method fast multipole method homogenization method |
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