铁心式多极纵磁触头及其磁场计算

Multipole Contact with Iron-core Axial Magnetic Field and It's Caculation

提出了一种新型真空灭弧室触头结构,利用积分方程法对该灭弧室的磁场分布进行了三维计算,结果证明本结构增强了真空灭弧室的纵向磁场;同时通过计算分析了触头开距、铁心形状等参数对本结构纵向磁场大小和分布的影响。

A new design of contact structure of vacuum interrupter is proposed. The 3-dimensional magnetic field is calculated by using integral equation method and the results show that this contact structure enhances the axial magnte -tic field. The influence of gap distance and iron-core shape on the distribution and strength of axial megnetic field is also analysed.