Measurement method of the B-H characteristics in open circuit for Nd-Fe-B magnet

Naoya Hieda, Kan Akatsu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Variable Flux Permanent Magnet Synchronous Machine(VFPMSM) has been proposed for the purpose of high efficiency motor. However, in order to perform magnetization control of VFPMSM and optimum design, it is necessary to measure the operating point of the permanent magnet. Since the motor is located in the open magnetic circuit, the effect of the demagnetization field cannot be ignored. In general, the demagnetization coefficient is calculated from the permeance of the magnetic circuit, the demagnetization field correction is performed. However, there is a problem that the formula is complicated and errors between calculated value and experimental values are existed. Therefore, in this paper, we discuss a demagnetization field correction method using the slope of the hysteresis curve. The purpose of this study is to obtain the operating point of the permanent magnet under the motor driven condition by simple and accurate demagnetization field correction.

Original languageEnglish
Title of host publication2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728133980
DOIs
Publication statusPublished - 2019 Aug
Event22nd International Conference on Electrical Machines and Systems, ICEMS 2019 - Harbin, China
Duration: 2019 Aug 112019 Aug 14

Publication series

Name2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019

Conference

Conference22nd International Conference on Electrical Machines and Systems, ICEMS 2019
CountryChina
CityHarbin
Period19/8/1119/8/14

Keywords

  • Demagnetization field correction
  • Operating point of the permanent magnet
  • Variable Flux
  • style

ASJC Scopus subject areas

  • Control and Optimization
  • Energy Engineering and Power Technology
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Measurement method of the B-H characteristics in open circuit for Nd-Fe-B magnet'. Together they form a unique fingerprint.

Cite this