Experiment and analysis for characterization of electric discharge system with floating conductor

In this paper, we present the numerical analysis method for analyzing discharge characteristic with the presence of a floating conductor. The Fowler-Nordheim electron emission is employed for the charge injection condition, and the Poisson's equation is coupled with the hydrodynamic drift-diffusion equation to calculate the space charge distributions. In the analysis model, the electric field is affected by the presence of a floating conductor that the space charges can be accumulated on or emitted from its surface. Therefore, the space charge distributions are calculated considering the surface charge on a floating conductor. The analysis results show discharge mechanism with the presence of a floating conductor. The experiments using corona generators are carried out, and the obtained current data shows the space charge distribution affected by the presence of a floating conductor.