Establishment of Time-Domain Mathematical Model of Suspension Force for Bearingless Multi-sector Motor Based on Maxwell Stress Tensor Method

  • Yuanyang Cheng*
  • , Jingpo Shi
  • , Huifeng Cui
  • *Corresponding author for this work

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

Abstract

This paper uses the local Maxwell stress tensor method to calculate the suspension force of bearingless multi-sector permanent magnet synchronous motor. Due to the special structure of the motor, the integration area is divided into three independent sub-areas, and surface integrals are established on the surface covered by the sectors to obtain an accurate time-domain mathematical model of the suspension force. The established mathematical model takes into account the asymmetry of the armature currents of each sector, so this model is suitable for bearingless motors with multi-sector winding connections. It can be used to calculate the magnitude and direction of the suspension force vector in real time. Finally, with the help of Ansys Maxwell simulation software, the mathematical model is compared with the finite element results to verify the correctness of the mathematical model.

Original languageEnglish
Title of host publicationThe proceedings of the 16th Annual Conference of China Electrotechnical Society - Volume II
EditorsXidong Liang, Yaohua Li, Jinghan He, Qingxin Yang
PublisherSpringer Science and Business Media Deutschland GmbH
Pages1051-1058
Number of pages8
ISBN (Print)9789811918698
DOIs
StatePublished - 2022
Event16th Annual Conference of China Electrotechnical Society, ACCES 2021 - Beijing, China
Duration: 24 Sep 202126 Sep 2021

Publication series

NameLecture Notes in Electrical Engineering
Volume890 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference16th Annual Conference of China Electrotechnical Society, ACCES 2021
Country/TerritoryChina
CityBeijing
Period24/09/2126/09/21

Keywords

  • Bearingless motor
  • Maxwell stress tensor
  • Multiphase motor
  • Suspension force

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