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Electrical Contact Performance Simulation for Power Electromechanical Relay Under Inrush Current Conditions

  • School of Electrical Engineering and Automation, Harbin Institute of Technology
  • Harbin Institute of Technology

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

Abstract

Enough high inrush current could cause the closed contacts to repulse each other, and further contact welding failures. This paper analyzes the mechanism of contact repulsion in relays and proposes a method for evaluating the endurance capability of relay contacts under inrush current conditions based on the commercial software COMSOL Multiphysics. The electrodynamic repulsion force between contacts and the contact-spring component are calculated. Furthermore, the relationship between contact force, peak inrush current and the repulsion behavior of relay contacts is analyzed. The relevant test rig is designed, and the obtained experimental results validate the feasibility of the proposed simulation method.

Original languageEnglish
Title of host publicationThe Proceedings of 2024 International Conference of Electrical, Electronic and Networked Energy Systems
EditorsAimin Sha, Ming Yang, Li Cai, Changbin Hu, Rui Li, Wenhao Xie
PublisherSpringer Science and Business Media Deutschland GmbH
Pages326-333
Number of pages8
ISBN (Print)9789819618675
DOIs
StatePublished - 2025
Externally publishedYes
EventInternational Conference of Electrical, Electronic and Networked Energy Systems, EENES 2024 - Xi'an, China
Duration: 18 Oct 202420 Oct 2024

Publication series

NameLecture Notes in Electrical Engineering
Volume1332 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

ConferenceInternational Conference of Electrical, Electronic and Networked Energy Systems, EENES 2024
Country/TerritoryChina
CityXi'an
Period18/10/2420/10/24

Keywords

  • Electrodynamic Repulsion Force
  • Electromechanical Relay
  • Inrush Current

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