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This paper discusses experimental studies conducted to determine the effects of methods used to increase the electrical stress limit of polystyrene dielectric samples. Surfaces of samples were laser annealed to create a more uniform surface and decrease voids where charge may accumulate. Geometry of the dielectric samples were considered with the aim of reducing electric field intensity at the triple...
An atmospheric pressure non-thermal plasma needle has been developed to study the potential impact of plasma on melanoma cancer cells. The device operates at a frequency of 113 kHz with the plasma sustaining electrode at a potential of approximately 2.5 kV ac and a power less than 1.5 W. The plasma is generated by ionizing helium gas with flow rates in the range of 1-9.7 L/min. The plasma needle was...
Tests validating the consistency and repeatability of controlled electrical surface flashover on metallized thin film insulators were performed. The study of electrical surface flashover has been mainly confined to its prevention under various contaminated conditions such as ice. The experiments discussed in this paper have gone in the opposite direction. The focus of the experiments was not to prevent...
A set of advanced metallized polymer film capacitors was characterized as to their partial discharge (PD) behavior. The sample set of these capacitors was each at various stages of capacitor lifetime. The stages of lifetime were new/unused, moderate/midlife, and heavy use/end of life. The onset of partial discharges was initiated via the application of dc voltage not exceeding the design rating of...
A novel method of generating a low energy plasma utilizing the underlying characteristics of exploding wires was investigated. The plasma was formed by exciting the metallization on samples of polypropylene film with an impulse voltage of 2500 V. A concise method of simultaneously measuring the low energy plasma's current, light intensity, and event duration in the infrared spectrum was performed...
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