Transformer-less Drive and Operation Stability Analysis of Dielectric Barrier Discharge using a Double Resonance Circuit

Abstract

A dielectric barrier discharge load (DBD) with a maintenance voltage of 1.5kV has been successfully driven stably from a 48V inverter only by resonance voltage boost and no transformer. The proposed circuit consists of a two-stage resonant circuit. The circuit operation is investigated using both prototyping measurement and circuit simulation, which shows that despite the high Q value, the design margin and operating stability of the circuit are extremely wide. It is found that this operational stability can be explained by considering the impedance characteristics of DBD. We believe that the circuit is suitable for driving discharge loads such as DBD in practical applications.