Non-linear numerical expression of surge voltage for electromagnetic clutch

Junya Muramatsu, Takashi Kojima, Hiroya Tanaka, Yoshiyuki Hattori, Hiroshi Okada, Hiroki Keino, Takashi Nakanishi, Keisuke Fujisaki

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


In this paper, we propose a numerical method for accurately predicting the surge voltage generated in an electromagnetic (EM) clutch, which is the inductive load of a vehicular air conditioner compressor. The EM clutch is expressed by a 2-D transient response model that considers eddy currents and the non-linear magnetization characteristics of the clutch materials. We found that the surge voltage can be calculated exactly using this model. The calculation result differed from the measured value by <5%.

Original languageEnglish
Article number7093547
JournalIEEE Transactions on Magnetics
Issue number3
Publication statusPublished - 2015 Mar 1


  • Eddy current
  • electromagnetic (EM) clutch
  • electromagnetic simulation
  • non-linear magnetic material
  • surge voltage

ASJC Scopus subject areas

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


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