Simulation and Analysis of Charge Distribution and Capacitance Effect on Uneven Surface of Dielectric with Leakage Current
摘要
Insulation parts made of materials with the characteristics of dielectric and conductive media not only have capacitance and conductance effects between electrodes, but also have capacitance effects between adjacent surfaces on uneven surfaces. Positive and negative charges will accumulate on the surface, thereby affecting the surface electric field and insulating properties. This paper discusses the mechanism of the capacitance effect caused by the uneven surface, and gives the mathematical expression and solution method of the related electric field and charge distribution. Furthermore, this paper uses the finite element method to simulate and solve the electric field under AC excitation. The simulation results are demonstrated and discussed.