Effect of carrier frequency and circuit resistance on iron loss of electrical steel sheet under single-phase full-bridge PWM inverter excitation

H. Kaihara, N. Takahashi, M. Nakano, M. Kawabe, T. Nomiyama, A. Shiozaki, D. Miyagi

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The pulse width modulation (PWM) inverter has been used for the control of a motor since the rotating speed can be changed efficiently and easily. In order to estimate the iron loss in an iron core with sufficient accuracy under a PWM inverter excitation, it is necessary to understand correctly the influence of operating condition and circuit parameter on iron losses. In this paper, we measured magnetic properties of the nonoriented electrical steel sheet excited by a single-phase full-bridge PWM inverter using a ring specimen that corresponds to a magnetic circuit of an actual motor core. The effect of the carrier frequency and circuit resistance on the iron loss and the behavior of minor loops was examined. It is shown that the iron loss is increased when the circuit resistance is increased due to the generation of minor loops. Therefore, the circuit resistance should be decreased in an actual motor system.

Original languageEnglish
Article number6332949
Pages (from-to)3454-3457
Number of pages4
JournalIEEE Transactions on Magnetics
Volume48
Issue number11
DOIs
Publication statusPublished - 2012 Oct 29

Keywords

  • Carrier frequency
  • Circuit resistance
  • Iron losses
  • Pulse width modulation (PWM) supply

ASJC Scopus subject areas

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

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