Discharge characteristics of coaxial dielectric barrier discharge driven by a microsecond oscillation pulse power

The dielectric barrier discharge (DBD) in atmospheric air is generated with coaxial dielectric structure driven by a microsecond oscillatory pulse power supply. The discharge characteristics of DBD are studied by measurement of the voltage-current waveform and capture of the lighting emission images, and the important discharge parameters such as transfer charge and discharge power are calculated. The influences of applied voltage amplitude and air gap distance on discharge characteristics and parameters of DBD are studied, and the experimental results are explained based on the analysis of the discharge mechanism. Results show that the DBD driven by a microsecond oscillatory pulse power supply consume more discharge power and transfer larger amount of charge, and the average discharge power and the amount of transfer charge could reach 100 W and thousands of nC, respectively. The discharge power and the amount of transfer charge can be increased by increasing applied voltage amplitude and reducing air gap distance.