Investigation of algebraic multigrid method for magnetic field analysis of an electric machine with a laminated core

Masahiko Miwa, Takashi Yamada, Shinji Wakao

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2 Citations (Scopus)


In this paper, we describe the applicability of Algebraic Multigrid Method (AMG method) as a fast solution for magnetic field analysis of an electric machine with a laminated core. In an experimental analysis, we have found that there are some cases where the calculation speed can be improved by using the AMG method for a fine mesh that models a laminated iron core exactly. Therefore we investigated the convergence characteristic of the standard Incomplete Cholesky Conjugate Gradient method (standard ICCG method) and the Conjugate Gradient method preconditioned with AMG method (AMGCG method) for the simple and actual analysis models. The numerical results show that the AMGCG method provides fast solutions for laminated mesh models for which the standard ICCG method does not work well in many analysis cases.

Original languageEnglish
Article number4787397
Pages (from-to)992-995
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number3
Publication statusPublished - 2009 Mar 1



  • Algebraic multigrid method
  • Finite element methods
  • Iterative methods
  • Laminated core

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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