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Proposal for a benchmark model of a laminated iron core and a large‐scale and highly accurate magnetic analysis
Author(s) -
Takahashi Yasuhito,
Wakao Shinji,
Fujiwara Koji,
Kaimori Hiroyuki,
Kameari Akihisa
Publication year - 2009
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.20809
Subject(s) - homogenization (climate) , benchmark (surveying) , finite element method , diagonal , multipole expansion , nonlinear system , core (optical fiber) , boundary value problem , fast multipole method , computer science , structural engineering , mathematics , mechanical engineering , engineering , physics , mathematical analysis , geometry , geology , biodiversity , telecommunications , ecology , geodesy , quantum mechanics , biology
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