新型大功率直流继电器建模与仿真分析  

Modelingand Simulation Analysis of New High-Power DC Relays

作　　者：李敏 陈平[1,2] LI Min;CHEN Ping(School of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Ningbo Jinchen Technology Co.,Ltd.,Ningbo 315506,China)

机构地区：[1]北京化工大学机电工程学院,北京100029 [2]宁波·金宸科技有限公司,浙江宁波315506

出　　处：《电器与能效管理技术》2023年第8期10-16,46,共8页Electrical & Energy Management Technology

摘　　要：高压直流继电器的结构一般都十分紧凑,没有设置灭弧室,导致灭弧难度大。为此,研发了新型大功率直流继电器。区别于传统继电器,新型继电器利用电机带动齿轮传动机构进行动、静触头分离,小巧的传动机构使得分断间隙足够,可以达到12~15 mm,能够高效分断高电压大电流。基于磁流体动力学模型,使用Comsol Multiphysics有限元软件建立新型继电器二维对称模型,并对不同因素下的电弧进行仿真,分析不同因素与燃弧时间之间的关系,从而确定各个因素合适的取值范围,同时也证明了新型继电器的灭弧能力。The structure of high-voltage DC relay is generally very compac.The lack of an arc extinguishing chamber results in high difficulty in extinguishing the arc.In order to solve the existing problems,a new high-power DC relay is developed.Different from the traditional relay,the new type of relay utilizes a motor to drive a gear transmission mechanism to separate the dynamic and the static contacts.The compact transmission mechanism makes the breaking gap enough,which can reach 12~15 mm and effectively break the high voltage and high current.Based on the MHD model,using the Comsol Multiphysics finite element software to establish the new relay two-dimensional symmetrical model,the arcs of the relay under different factors are simulated and the relationship between different factors and the arcing time is analyzed,which can determine the appropriate value range of each factor and also prove the arcing ability of the new relay.

关 键 词：高压继电器 直流电弧 磁流体动力学 不同因素 燃弧时间 

分 类 号：TM585[电气工程—电器]