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Using magnetic fields to control the vacuum arc is a major way to improve the breaking capacity of vacuum interrupters. Besides the single transverse magnetic field (TMF) and single axial magnetic field (AMF), new type of TMF-AMF contact structure has been put forward to control the vacuum arc in recent years. In this paper, two different structure contacts are used in experiments. The arc evolution...
In this paper, a 3D model for vacuum arc controlled by transverse magnetic field (TMF) is built and simulation on its parameters is calculated. In the simulation, only the external TMF is taken into consideration and arc is assumed to contracts itself. Arc is not neutral so that ions and electrons are calculated respectively. According to the simulation results, both ions and electrons are deflected...
Vacuum arc is usually driven to rotate and deflect by transverse magnetic field (TMF). This paper presents the 2D simulation results of vacuum arc controlled by external transverse magnetic field based on the magneto-hydro-dynamic (MHD) model. It is assumed that anode and cathode spots only occupy a small part of contact area for arc maintains a constricted status under TMF. In the simulation, external...
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