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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...
In this paper, a method is proposed to simulate the two-dimensional random motion of a single cathode spot step by step. Simulation parameters, e.g., the characteristic displacement and time step of random motion, are taken from relevant experimental data. In every motion step, the moving direction along the x axis (+x or −x) and y axis (+y or −y) are chose randomly, and the displacements along the...
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