Difference in iron loss and magnetic characteristics for magnetic excitation by PWM inverter and linear amplifier

Keisuke Fujisaki, Ryou Yamada, Takahiro Kusakabe

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Iron loss in two kinds of electrical steel, which have the same iron loss in case of conventional linear amplifier excitation but different thickness, is found to have a difference of 10%-20% in case of PWM inverter excitation, which is often used in a motor drive control system. The PWMinverter has many time harmonics in the output voltage, whereas the linear amplifier does not. The difference in iron loss is not always ignored while considering the electrical steel grade in commercial catalogs and the JIS (Japanese Industrial Standards). Since the iron loss also increases by about 10%-60% in PWM inverter excitation, a material evaluation system and a method for reducing iron loss are considered to be important.

Original languageEnglish
Pages (from-to)69-76
Number of pages8
JournalIEEJ Transactions on Industry Applications
Volume133
Issue number1
DOIs
Publication statusPublished - 2013 Feb 4

Keywords

  • Electrical steel
  • Exciting power source
  • Inverter
  • Iron loss
  • Linear amplifier
  • Magnetic material

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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