Sampling frequency influence on magnetic characteristic evaluation under high frequency GaN inverter excitation

Wilmar Martinez, Shunya Odawara, Keisuke Fujisaki

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

Nowadays, there is a great interest on new magnetic materials and their outstanding properties of low iron losses. However, when a magnetic material is experimentally characterized, it is important to select a suitable sampling frequency specially when the inverter is driven at a high carrier frequency. Nevertheless, iron losses of a magnetic material under inverter excitation are usually underestimated when the inverter is driven at an insufficient sampling frequency. This paper introduces the iron losses of a magnetic material at high carrier frequency excitation using a GANFET inverter. In addition, the experimental evaluation of iron losses at several sampling frequencies is presented. As a result of the measurements, at low sampling frequencies, minor loops of BH curves could not be well constructed, because the inverter waveforms are not measured properly. Finally, experimental tests at 100 kHz and 1 MHz of carrier frequency presented an underestimation of 21.4% and 25.1%, respectively. This measurement error is presented when the inverter is driven at a sampling frequency lower than the suitable one.
Original languageEnglish
Title of host publicationProceedings of the 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC 2017 - ECCE Asia
PublisherIEEE
Pages953-958
Number of pages6
ISBN (Print)978-1-5090-5157-1
DOIs
Publication statusPublished - 1 Jun 2017
MoE publication typeA4 Article in a conference publication
EventIEEE International Future Energy Electronics Conference - Kaohsiung, Taiwan, Republic of China
Duration: 3 Jun 20177 Jun 2017
Conference number: 3

Conference

ConferenceIEEE International Future Energy Electronics Conference
Abbreviated titleIFEEC
CountryTaiwan, Republic of China
CityKaohsiung
Period03/06/201707/06/2017

Keywords

  • III-V semiconductors
  • gallium compounds
  • invertors
  • iron
  • magnetic materials
  • power field effect transistors
  • wide band gap semiconductors
  • Fe
  • GaN
  • frequency 1 MHz
  • frequency 100 kHz
  • inverter
  • iron losses
  • magnetic characteristic evaluation
  • measurement error
  • sampling frequency influence
  • Current measurement
  • 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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