Iron Loss Characteristics Evaluation Using a High Frequency GaN Inverter Excitation

Wilmar Martinez, Shunya Odawara, Keisuke Fukisaki

Research output: Contribution to journalArticleScientificpeer-review


Recently, novel magnetic materials have been developed for high efficiency and high power density electric motors. In addition, next-generation semiconductor devices like Silicon Carbide (SiC) or Gallium Nitride (GaN) have been introduced for power converters due to their high frequency operation. Therefore, high frequency operation of new magnetic materials is possible when they are driven by GaN or SiC Inverters. Nevertheless, iron loss characterization of magnetic materials when they are excited by high frequency signals have not been conducted yet. This paper introduces the iron losses characterization of a magnetic material at high carrier frequency excitation using a GANFET inverter. This characterization was carried out by the experimental evaluation of iron losses at carrier frequencies from 5 kHz to 500 kHz at different deadtimes. As a result of the measurements, iron losses seem to have a trend to increase at high carrier frequencies and large deadtimes. In addition, filtering is introduced and it seems to be an effective technique for reducing iron losses.
Original languageEnglish
Article number1000607
Number of pages7
JournalIEEE Transactions on Magnetics
Issue number11
Publication statusPublished - 2017
MoE publication typeA1 Journal article-refereed


  • Coils
  • Frequency measurement
  • Inverters
  • Iron
  • Loss measurement
  • Magnetic materials
  • Voltage measurement
  • gallium nitride
  • high frequency
  • inverter
  • iron losses
  • magnetic characteristic
  • sampling frequency


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