Proposal for a benchmark model of a laminated iron core and a large-scale and highly accurate magnetic analysis

Yasuhito Takahashi, Shinji Wakao, Koji Fujiwara, Hiroyuki Kaimori, Akihisa Kameari

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Pages (from-to)26-35
Number of pages10
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Volume170
Issue number1
DOIs
Publication statusPublished - 2010 Jan 15

Keywords

  • Fast multipole method
  • Homogenization method
  • Hybrid finite element-boundary element method
  • Laminated iron core
  • Nonlinear analysis

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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