Analysis of Electromagnetic Characteristics of AC Contactor

doi:10.16628/j.cnki.2095-8188.2021.02.003

Abstract

Abstract:

AC contactors are widely used in the field of rail transit and railways.The main contacts of the contactors are frequently closed,resulting in that their electrical life is often lower than the mechanical life.Effectively analyzing the electromagnetic characteristics of the contactor under different working conditions is the premise of its failure analysis and life prediction.The voltage of the coil controlled by the contactor has a great influence on its working performance.Based on the finite element software,a simulation model of electromagnetic characteristics was established and analyzed.The influence of the coil pull-in phase angle and voltage amplitude on the electromagnetic performance of the contactor was given.Combined with ADAMS software co-simulation,the dynamic characteristics of impact force and penetration depth are analyzed,and the analysis results of the vibration phenomenon of the contact of the contactor are given.The simulation and result analysis in this paper provide a basis for the analysis of the contactor failure cause.

Key words: contactor, electromagnetic performance, dynamic characteristics, finite element simulation

CLC Number:

TM581.2

GUO Shucai, MA Yanshen, WANG Xilian. Analysis of Electromagnetic Characteristics of AC Contactor[J]. LOW VOLTAGE APPARATUS, 2021, 0(2): 14-18.

Figures/Tables 11

References 17

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