三相磁保持继电器短路电动力不一致性分析  

Investigation on Inconsistency of Short Circuit Electrodynamic Force of Three-Phase Magnetic Latching Relay

作　　者：苏秀苹[1,2] 金尧 李文华[1,2] SU Xiu-ping;JIN Yao;LI Wen-hua(State Key Laboratory of Reliability and Intelligence of Electrical Equipment(Hebei University of Technology),Tianjin 300132,China;Hebei Key Laboratory of Electromagnetic Field and Electrical Reliability(Hebei University of Technology),Tianjin 300132,China)

机构地区：[1]省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学),天津300132 [2]河北省电磁场与电器可靠性重点实验室(河北工业大学),天津300132

出　　处：《机械设计与制造》2023年第6期84-88,共5页Machinery Design & Manufacture

基　　金：河北省自然科学基金(E2020202221)。

摘　　要：针对三相磁保持继电器各相电动力不一致的问题,进行了相间磁场影响下的短路电动力研究。建立了三相触头系统电磁仿真模型,通过计算单相短路与三相短路工况下的电动力,得到了电动力的数值变化规律,分析了导电杆距与等效力臂长度对电动斥力峰值的影响,并设计了三相电动力仿真计算App。结果表明,相间磁场主要对回路力的数值产生影响,对Holm力影响极小;在三相短路工况下,B相所受的电动斥力峰值最大;减小相间距与增大等效力臂长度均有益于减小电动斥力。该研究可为三相触头系统优化设计提供参考。Aimed at the inconsistency problem of the electrodynamic force of three-phase magnetic latching relay,this paper studied the short circuit electrodynamic force under the influence of interphase magnetic field.The electromagnetic field numerical simulation model of three-phase contact system was built.To obtain the numerical variation rule of electrodynamic power,the electrodynamic power under the single-phase short faulty and three-phase short faulty was calculated.At the same time,the influence of conducting rod distance and equivalent arm length on the peak value of electric repulsion force was analyzed and the three-phase electrodynamic power simulation app was designed.The results show that interphase magnetic field mainly affects the value of Ampere force,but has little influence on Holm force.Under the condition of three-phase short faulty,the peak value of electric repulsion force of phase B is the largest.The electrodynamic repulsion force could be reduced by reducing the interphase distance and increasing the equivalent arm length.This study can provide reference for the optimal design of three-phase contact system.

关 键 词：三相磁保持继电器 电动力 不一致性 仿真计算App 

分 类 号：TH16[机械工程—机械制造及自动化] TM501[电气工程—电器]