Experimental and theoretical investigation of surface discharges for charged dielectric materials

The paper presents experimental investigations of electrostatic discharges for charged dielectric materials. The aim of the work is to develop a model that allows the calculation of the dissipated power and energy during brush and surface discharges. For a higher surface charge density, the discharge pattern changes from brush- to surface discharge. An important point is to find the transition value of the surface charge density. The decisive parameter for the development of surface discharges is the tangential electric field strength. Therefore, the tangential electric field strength on the surface was simulated. Parameter for this are the initial surface charge density and the discharge length.