2015 IPFW Student Research and Creative Endeavor Symposium
 
Development of a Variable Frequency, Constant Power, High Voltage Power Supply for Driving Dielectric Barrier Discharges

Title

Development of a Variable Frequency, Constant Power, High Voltage Power Supply for Driving Dielectric Barrier Discharges

Files

Faculty Sponsor

Dr. Mark Masters

Department/Program

Department of Physics

University Affiliation

Indiana University – Purdue University Fort Wayne

Abstract

Here we present the construction of the necessary equipment to investigate the electrical excitation frequency dependence of Dielectric Barrier Discharge (DBD) emissions. A DBD is a type of electrical discharge occurring between two electrodes just as many other discharges. However, in a DBD at least one electrode is covered with an insulating material which prohibits the formation of a complete arc. Instead a small amount of charge seeps through the insulator and builds up on its surface until a small discharge (in the form of a filament) can form. This happens all across the surface of the insulator at such a rate that the space near the insulator becomes filled with a haze of filaments. The light emitted from this plasma includes a significant amount of ultraviolet radiation. When combined with the energetic ions present in the plasma, DBDs can be used as a means of sterilization. What is unknown is how the emission from a DBD depends upon frequency of the excitation source.

The most difficult part to performing this investigation is a power source that provides variable frequency at a constant power. We present our custom, variable-frequency, high voltage power supply and the subsequent tests of the same.

Disciplines

Physical Sciences and Mathematics | Physics

Development of a Variable Frequency, Constant Power, High Voltage Power Supply for Driving Dielectric Barrier Discharges

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