Study on Optimal Matching of DBD Load and Inverter Power of Series Resonant Type

Inverter power of series resonant type are commonly used in dielectric barrier discharge, By means of theoretical analysis and experiments based on Q-V Lissajous figures, study on optimal matching of DBD load and inverter power are carried out to improve the working performance and efficiency of DBD device. The result indicate that: as the DBD equipment´s discharge power enhanced, the dielectric equivalent capacitance would increase, and the air gap equivalent capacitance would diminish. There are two different resonance frequency of DBD devices powered by medium frequency inverter power of series resonant type, when the DBD device works at the resonance frequency of the pre-discharging circuit, the discharge starts easily, and works near the resonance frequency of the after-discharging circuit would be benefit to the system´s discharge power, and because of the dynamic load characteristics of DBD device, the resonance frequency of the after-discharging circuit will decrease with the increase of input voltage.