Research on Arc Morphology of AC Contactor Interrupting Based on Magnetohydrodynamics

doi:10.16628/j.cnki.2095-8188.2025.05.005

Abstract

Abstract:

Based on magnetohydrodynamics (MHD) theory, a 3D arc motion model for the dynamic breaking of contacts is established to simulate in the practical industrial products,making the simulation model closer to the real physical conditions of arc interruption.The arc motion process after interruption under different initial currents is analyzed.High-speed photography technology is used to carry out the relevant experiments.The comparison and verification with the simulation results fully demonstrate the effectiveness of the simulation model.Through the simulation study of arcs interruption under different currents,the location and causes of arc stagnation in the structure are pointed out,the reasons for the aggravation of arc stagnation during the interruption of large currents are analyzed,and the theoretical guidance is provided for the subsequent research and development of such products.

Key words: contactor, air arc, arc simulation, multi-physics simulation, arc chamber

CLC Number:

TM572.2

LUO Yang, YU Xiuyi, JIANG Xuyan, XU Junshuai, CHEN Yuan, LIU Zhenxiang. Research on Arc Morphology of AC Contactor Interrupting Based on Magnetohydrodynamics[J]. LOW VOLTAGE APPARATUS, 2025, 0(5): 34-42.

Figures/Tables 18

References 11

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