The Magnet Operating Point Estimation using Motor Parameter Estimation and Magnetic Equivalent Circuit in PMSM

Minho Jang, Kan Akatsu

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

Abstract

This paper proposes a method of estimating motor parameters in permanent magnet synchronous motor and estimating the magnet operating point using magnetic equivalent circuit. The first step of the proposed method is that the electrical parameters of the motor can be estimated independently using the modified model reference adaptive system with additional current sampling points. The second is to estimate the flux leakage of stator and the residual magnetic flux density of the magnet corresponding to the components of the magnetic equivalent circuit, using estimated inductances and flux linkage. This results in the compensated magnetic permeance and magnetomotive force being reflected in the magnetic equivalent circuit, and the magnetic flux density of magnet can be estimated more accurately. Finally, using the estimated residual magnetic flux density, the magnet temperature can be estimated by the temperature coefficient equation. The simulation and experimental verification have been provided to demonstrate the effectiveness of the proposed method. The proposed method is relatively simple and can identify the operating point of the permanent magnet in real time. Therefore, it is expected that this study will help in terms of the protective logic design for permanent magnet and an improvement of efficiency in PMSM.

Original languageEnglish
Title of host publication2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages73-78
Number of pages6
ISBN (Electronic)9781728153018
DOIs
Publication statusPublished - 2020 Nov 29
Event9th IEEE International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia - Nanjing, China
Duration: 2020 Nov 292020 Dec 2

Publication series

Name2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia

Conference

Conference9th IEEE International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia
CountryChina
CityNanjing
Period20/11/2920/12/2

Keywords

  • magnet operating point
  • magnet temperature
  • magnetic equivalent circuit
  • magnetic flux density
  • model reference adaptive system

ASJC Scopus subject areas

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

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