Consideration of eddy current loss estimation in SPM motor based on electric and magnetic networks

Yukihiro Yoshida, Kenji Nakamura, Osamu Ichinokura

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


This paper presents a method for calculating eddy current loss in permanent magnets of a surface permanent magnet (SPM) motor based on electric and magnetic networks. First, an electric network model to calculate the eddy current loss is indicated. Then, to find the resistivity of a Nd-Fe-B magnet, eddy current loss in the magnet is measured by using a test core. Next, a reluctance network analysis (RNA) model of the SPM motor considering the rotor rotation is presented. The eddy current losses in the magnet of the SPM motor from no load to full load conditions are calculated by the RNA model and electric network model. The eddy current losses calculated by the proposed model agree well with the ones obtained from three-dimensional finite-element analysis.

Original languageEnglish
Article number6332622
Pages (from-to)3108-3111
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number11
Publication statusPublished - 2012


  • Eddy-current loss
  • reluctance network analysis (RNA)
  • surface permanent magnet (SPM) motor

ASJC Scopus subject areas

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


Dive into the research topics of 'Consideration of eddy current loss estimation in SPM motor based on electric and magnetic networks'. Together they form a unique fingerprint.

Cite this