Abstract
Non-thermal plasma reactors offer numerous advantages and are used in a wide variety of applications. Exemplary fields of use include exhaust gas or water quality improvement, surface processing, agriculture, or medical processes. Two of the most popular discharge chamber constructions are dielectric barrier discharge (DBD) and pulsed corona discharge (PCD, barrierless) plasma reactors. Various power supply constructions are presented in the literature with varying complexity and operating principles. A simple, power electronic, pulsed power supply construction is presented in this work, implementing resonant power switch operation, modern silicon carbide (SiC) power semiconductors and a Tesla coil-like transformer design. The power supply construction is immune to short circuits in the reactor and can be used for both types of reactor constructions. The principles of operation, simulation results, and prototype test verifications are presented with main power supply characteristics.
Highlights
Non-thermal plasma discharge properties are used in a wide variety of processes
Regarding the plasma reactor constructions, dielectric barrier discharge (DBD, electrodes separated by a dielectric barrier) and corona discharge (CD, separated electrodes with no dielectric barrier) reactors are most widely used for cold plasma discharge generation under atmospheric pressure
The different properties of both constructions are an important factor in choosing a certain one for industrial applications and have a strong influence on power supply system designs
Summary
Non-thermal plasma discharge properties are used in a wide variety of processes. Further research is needed to provide application possibilities in different fields [4]. Regarding the plasma reactor constructions, dielectric barrier discharge (DBD, electrodes separated by a dielectric barrier) and corona discharge (CD, separated electrodes with no dielectric barrier) reactors are most widely used for cold plasma discharge generation under atmospheric pressure. The different properties of both constructions are an important factor in choosing a certain one for industrial applications and have a strong influence on power supply system designs. It is possible to use a simple, high-voltage sine wave source (from several to several tens of kV) with a frequency of 50 Hz to 50 kHz to generate the plasma in a DBD reactor
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