Analysis and Experimental Verification of the Peaking Capacitor’s Flashover Process in an EMP Simulator

The flashover process of the peaking capacitor in electromagnetic pulse (EMP) simulator is studied based on theoretical analyses and experimental verification this paper. There are deeper denser ablation spots film surface near inner core destroyed capacitor, while damage outer relatively slight, which indicates that current along larger. Besides, circuit simulation show earlier occurs smaller current. electric field non-conical mainly occupied with normal component. Differently, for conical surface, layer dominated by component parallel main part layer. It considered originates from layers develops gradually to until penetrates through all layers. Furthermore, images firstly outermost increase voltage. For such special structure more likely facilitate under nanosecond pulse. These results may exhibit specific reference implication design insulation used EMP simulator.