Finite element analysis of bipolar corona

This paper aims at analysis of the bipolar corona in two conductors-to-plane configuration. The physical model is based on the Poisson and continuity equations. The model employs an iterative technique, wherein the finite element method is used to compute electric field structure for an assumed charge density distribution, and the method of characteristics is used to compute charge density structure for an assumed electric field distribution. A linear biased probe is used to measure, at the ground plane, current density and electric field during the bipolar corona. The computed values are in good agreement with experimental data.