Experimental characterization of electric potential uniformity at the surface of polymer plates corona charged by multiple-row needle-type electrodes

Diverse configurations of needle-type electrodes are commonly used to generate DC or AC corona discharges in various industrial applications. Previous studies confirm that the amount charges generated by discharge is controlled several factors such as level applied voltage, ambient conditions, well geometry electrode system. This paper aimed evaluate distribution uniformity multiple-row and deposited on Polyvinyl Chloride (PVC) plate surface, either at rest (“static” regime) motion (“dynamic” under electrode. The potential PVC surface was measured a non-contact electrostatic voltmeter. electric maps resulting from experiments carried out “static” regime, point charging effect related their voltage. In “dynamic” regime experiments, profiles show corona-charged polymer plates depends number needles direction movement Comparing results obtained this with previous studies, lead us general conclusion can be improved, attain values higher than 95%, system field.