Title: An investigation of pulsed corona in cylindrical and wire-plate geometries
Abstract: A numerical model for the evaluation of pulsed corona discharges in cylindrical geometries is presented. The procedure assumes that discrete charged shells are liberated during the pulsed discharge. The charged shells are moved in increments in the inter-electrode space depending on the local field calculated using the superposition theorem and assuming static conditions. The predictions of charge per pulse and current—voltage characteristics are compared with laboratory measurements with sinusoidal pulses. Fairly good agreement between theory and experiment is observed. It is seen that the charge per pulse is dependent rather on the peak pulse voltage than on the pulse width in the range of 100 to 300 μs investigated here. Due to the space charge quenching effect, the discharge is observed to cease near the pulse peak as predicted by the theoretical model. From the measurements with a wire—plate geometry, it is seen that the current distribution on the plate perpendicular to the discharge wire is not much altered by theapplication pulsed voltage but the discharge along the length of the wire is observed to be much more uniform compared with DC. The investigation is useful for the development of pulsed energization of electrostatic precipitators.
Publication Year: 1982
Publication Date: 1982-08-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 9
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