交流继电器电弧动态特性仿真分析  

Simulation Analysis on Dynamic Characteristics of AC Relay Arc

作　　者：谢雅霜 鲍光海[1] XIE Yashuang;BAO Guanghai(College of Electrical&Automation,Fuzhou University,Fuzhou 350108,China)

机构地区：[1]福州大学电气工程与自动化学院,福建福州350108

出　　处：《电器与能效管理技术》2023年第4期28-33,共6页Electrical & Energy Management Technology

基　　金：福建省科技计划项目(2021H0014)。

摘　　要：继电器触头分断过程中产生的电弧是造成触头电烧蚀进而导致继电器失效的主要原因之一。为了方便分析交流电弧物理特性,通过对Fluent进行二次开发,基于流体动力学方程、电磁场方程建立三维交流电弧的磁流体动力学(MHD)模型。结合触头的实际运动过程,计算分析交流继电器分断电弧的动态过程。通过与实测数据进行对比,验证了电弧仿真的准确性,对进一步了解交流电弧特性及优化产品设计有一定的指导意义。The arc generated during the breaking process of relay contacts is one of the main reasons for electrical erosion of the contacts,which leads to relay failure.In order to facilitate the analysis of AC arc physical characteristics,through the secondary development of Fluent,the magneto-hydrodynamic(MHD)model of 3D AC arc is established based on the fluid dynamics equation and the electromagnetic field equation.Combined with the actual movement process of the contact,the dynamic process of the AC relay breaking arc is calculated and analyzed.By comparing with the measured data,the accuracy of the arc simulation is verified,which has certain guiding significance for the further understanding of AC arc characteristics and the optimizing product design.

关 键 词：交流电磁继电器 动态电弧 磁流体动力学模型 FLUENT 

分 类 号：TM501.2[电气工程—电器]