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Research on a Calculation Method of Permanent Magnet for Balanced Force Relay based on Attractive-Counter Force Coordination Curve

  • Ding Ding
  • , Yufei Qiao*
  • , Libing Shi
  • , Chenglong Zhou
  • , Rui Tu
  • , Guofu Zhai
  • *Corresponding author for this work

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

Abstract

The performance of the balanced force hermetically sealed electromagnetic relay (HSER) mainly reflects on the relationship between its attractive force and the counter force. Permanent magnet (PM) has key role in the design process of the electromagnetic attractive force. In this paper, an operating point-return line model of PM is built. A finite element model (FEM) is established to calculate static attractive force. A test system is built to validate the accuracy of the model. The attractive force and counter force curve under different voltage are solved. Under a counter force curve fixed condition, attractive force curve has been matched in design process by adjusting dimensions and materials of the PM. Based on this curve, an electromagnetic system has been designed. The accuracy of this method is verified by its prototype. Finally, the matching optimization rules and computational efficiency of this method are discussed.

Original languageEnglish
Title of host publicationProceedings of the 66th IEEE Holm Conference on Electrical Contacts, HLM 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages179-183
Number of pages5
ISBN (Electronic)9781665421072
DOIs
StatePublished - 2021
Event66th IEEE Holm Conference on Electrical Contacts, HLM 2021 - San Antonio, United States
Duration: 24 Oct 202127 Oct 2021

Publication series

NameElectrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts
Volume2021-October
ISSN (Print)0361-4395

Conference

Conference66th IEEE Holm Conference on Electrical Contacts, HLM 2021
Country/TerritoryUnited States
CitySan Antonio
Period24/10/2127/10/21

Keywords

  • Electromagnetic Relay
  • Modeling
  • Permanent Magnet
  • Preisach Model
  • Working Point

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