塑壳断路器不同结构触头灭弧系统吹弧磁场的分析  

Analysis of the Magnetic Field which Drives Arc for Different Configuration of Contact and Arc-Quenching System in Molded Case Circuit Breaker

作　　者：童争光[1] 陈德桂[1] 

机构地区：[1]西安交通大学电气工程学院,陕西西安710049

出　　处：《低压电器》2007年第17期1-4,共4页Low Voltage Apparatus

摘　　要：对塑壳断路器内部的触头灭弧系统结构进行改动,其触头打开电弧燃烧时的吹弧磁场亦会有相应的改变。应用三维有限元软件ANSYS分析了4种不同触头灭弧系统结构的吹弧磁场,对比了4个模型在通以相同电流的情况下,电弧中心线的磁感应强度B以及电弧受到的磁吹力。为增强吹弧磁场的磁吹力、提高触头灭弧系统的灭弧性能提供了方法和思路。If the configurations of the contact and arc-quenching system are modified,the magnetic field which can drive the burning arc moving into the plates will be changed accordingly.With equivalent current passed through,four different types of contact and arc-quenching systems magnetic fields were analyzed by the method of 3-D finite element nonlinear analysis.Specially,the magnetic flux densities of the central line of the arc and the magnetic blowout forces acting on the arc are compared.From this analysis,e...

关 键 词：塑壳断路器 有限元分析 磁感应强度 磁吹力 

分 类 号：TM561[电气工程—电器]