Influence of accumulated charges on characteristic of dielectric barrier discharge

To study the influence of accumulated charges on characteristics of dielectric barrier discharge, voltage-current characteristics of the dielectric barrier discharges for different applied voltages, air gap distances and thickness of the dielectric were measured, and the experimental results and the dielectric barrier discharges developing process were theoretically analyzed based on the theory of gas discharges and a simple theory model. The results show that the time of starting discharge on positive and negative half cycle is asymmetry and the intervals of adjacent two discharges are alternated. And the number of micro-discharges, the charges transported in discharges and the charges accumulated on dielectric layers increase with amplitude of applied voltages increasing and thickness of dielectric layers or air gap distances decreasing, so the effect of accumulated charges is enhanced. And if the accumulated charges are enough, reverse discharges are even possible.