Extrapolating B–H curve data using common electrical steel characteristics for high magnetic saturation applications

Seung Hee Chai, Ji Hyun Kim, Sung Il Kim, Jung Pyo Hong

Research output: Contribution to journalArticle

Abstract

In this paper, an adequate B–H curve extrapolation method is proposed and its reliability is verified through experiments. A method is developed to estimate the magnetic saturation induction from the density of the lamination core and electrical resistivity. The magnetic saturation induction of electrical steels measured using a vibration sample magnetometer are compared with the analytical results to validate the accuracy of the proposed estimation method. It is found that the predicted error in the magnetic saturation induction of the electrical steels are approximately 1.2% when the proposed method is used. The performance of interior permanent magnet synchronous motors that applies the proposed method are evaluated via 2D nonlinear finite element analysis and through experiments. Based on the obtained results, the extrapolated B–H curves from the estimated saturation induction can be used for various analyses in saturation region.

Original languageEnglish
Pages (from-to)258-264
Number of pages7
JournalJournal of Magnetics
Volume20
Issue number3
DOIs
StatePublished - 2015 Sep 30

Keywords

  • B-H curve
  • Electrical steel
  • Extrapolation method
  • Magnetic saturation induction

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