Title :
3D-simulation of arc motion between arc runners including the influence of ferromagnetic material
Author :
Lindmayer, Manfred ; Springstubbe, Matthias
Author_Institution :
Inst. fur Hochspannungstech. und Elektr. Energieanlagan, Tech. Univ. Braunschweig, Germany
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
Keywords :
circuit breakers; circuit-breaking arcs; computational fluid dynamics; electric current; ferromagnetic materials; finite volume methods; heat conduction; heat radiation; magnetic forces; 3D simulation; CFD finite volume code; CFD package implementation; arc chamber; arc motion; arc runners; complex interactions; computational fluid dynamics finite volume code; current flow; ferromagnetic flux concentrators; ferromagnetic material; ferromagnetic materials effects; gas flow; heat conduction; heat radiation; low-voltage switching devices; magnetic forces,; moving electric arc; parallel arc runners; steel splitter plates; transport equations; vector potential formulation; Computational fluid dynamics; Computational modeling; Equations; Fluid flow; Magnetic fields; Magnetic forces; Magnetic materials; Magnetic switching; Packaging; Resistance heating;
Conference_Titel :
Electrical Contacts, 2001. Proceedings of the Forty-Seventh IEEE Holm Conference on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-6667-0
DOI :
10.1109/HOLM.2001.953203
