Load Characteristic Analysis of Dielectric Barrier Discharge With Multineedle to Coaxial Cylindrical Configuration

The low-temperature plasma is a widely used technique for gas treatment, which is typically produced using dielectric barrier discharge (DBD). Considering the randomness of space discharge, adopting a multineedle electrode structure will be more controllable and effective, and its electrical behavior needs to be analyzed in the design of the driving power supply. This article studies the load characteristics of DBD using multineedle coaxial cylindrical electrodes based on the state plane analysis method and points out the variations in power and resonance characteristics under different operating situations. It provides a foundation for the design of discharge arrays and driving power supplies. First, the reactor’s construction and the driving converter’s operation were introduced, and the state plane modeling was done with parasitic capacitance taken into account. Then, a DBD platform was built for experimental verification, depicting the working mode of a single discharge load from multiple perspectives. The difference between the ideal model and the state trajectory of a single discharge load was theoretically analyzed. Finally, comparative experiments on the load characteristics of arrays with varying discharge unit counts were carried out. The connection between power, resonant characteristics, and load scale is shown in the experimental data.