PDM Control Method for High-frequency Voltage Inverter for Dielectric Barrier Discharge

Abstract

We examined the application of the pulse density modulation (PDM) method to a high-frequency voltage-source inverter for dielectric barrier discharge (DBD). The inverter consists of a full-bridge inverter, step-up transformer, and resonant circuit, and the high-frequency output is supplied to a pair of dielectric electrodes. It is characterized by applying the PDM method to inverter control, and burst controlling the inverter. In this paper, we first describe the specifications and circuit configuration required for a high-frequency voltage-source inverter. Next, we describe the concept of burst frequency setting as a new parameter and the method of constructing a pulse-generating circuit. Finally, a discharge test by prototype inverter is carried out, and it is demonstrate that discharge is stabilized by using PDM.