Quasi-static and dynamical computation of V-I characteristics of a dust-loaded pulse-energized electrostatic precipitator

This paper describes an accurate model and a new procedure for the numerical computation of the electric field, current and charge density, in a pulse energized electrostatic duct-type precipitator, in presence of dust. The proposed model is compared to the classical steady-state model used in the past. The old model shows nonphysical bumps and discontinuity whereas the new approach predicts the natural transient behavior of electrical quantities. The partial differential equations governing the transient phenomena are solved by means of an implicit-explicit finite-difference time-domain method, which ensures a fast computation. The obtained results, compared with experimental values, show a good accuracy of the presented method.