3D-simulation of arc motion between arc runners including the influence of ferromagnetic material

M. Lindmayer, M. Springstubbe
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引用次数: 13

Abstract

The behavior of the moving electric arc in low-voltage switching devices is determined by the complex interactions of magnetic forces, current flow, gas flow, heat conduction, and radiation. In this paper, three-dimensional simulations of arc motion between parallel arc runners are presented, which consider all these interactions. These simulations are carried out with a CFD (computational fluid dynamics) finite volume code. Based on earlier simulations (Karetta and Lindmayer, 1998; Karetta, 1998), the magnetic field, expressed as a vector potential formulation, is now treated by the same type of general transport equations as the other processes, which allows direct implementation into the CFD package used. This enables inclusion of the effects of ferromagnetic materials in the arc chamber, such as ferromagnetic flux concentrators or steel splitter plates. Typical simulation examples are presented for different design details.
含铁磁材料影响的电弧流道间电弧运动的三维模拟
低压开关器件中移动电弧的行为是由磁力、电流、气体流动、热传导和辐射的复杂相互作用决定的。本文对并联电弧流道之间的电弧运动进行了三维仿真,并考虑了这些相互作用。这些模拟是用CFD(计算流体力学)有限体积程序进行的。基于早期的模拟(Karetta和Lindmayer, 1998;Karetta, 1998),表示为矢量势公式的磁场,现在用与其他过程相同类型的一般输运方程来处理,这允许直接实现到所用的CFD软件包中。这样可以将铁磁材料的影响包括在电弧室中,例如铁磁通聚光器或钢分离器板。针对不同的设计细节,给出了典型的仿真实例。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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