Sparkover characteristics of prototype precipitator subjected to DC/pulse energization

Rajanikanth, BS; Prabhakar, B.R.

doi:10.1109/ias.1991.178319

Cited by 2 publications

(2 citation statements)

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“…The study also shows that a t 50 pulses per second, the current density increases exponentially with increase in pulse voltage as compared to that at lower repetition rates. A further insight into these results are presented by the author in [20][21][22]. In the present work, the studies were carried out with a pulse repetition rate of 50, at which good electrical characteristics were obtained.…”

Section: Experimental Studiesmentioning

confidence: 71%

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Modeling of prebreakdown VI characteristics of a wire-plate electrostatic precipitator operating under combined dc-pulse energization

Rajanikanth

Prabhakar

1994

IEEE Trans. Dielect. Electr. Insul.

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With the advent of pulse energization in electrostatic precipitators, the need for developing a model to simulate the physical processes in the prebreakdown region, at which the precipitator normally operates, is also increasing. The development of such a model helps in predicting the V I characteristics of a precipitator, which will be important to diagnose the electrical problems associated with the precipitator during its operation. The paper reports the details of a proposed model t o predict the V I characteristics of a wire-plate precipitator operating under the influence of repetitive pulses superposed on a dc bias. The model begins with the calculation of space charge density near the HV electrode during the pulse-on period and then proceeds with the drift of space charges in the pulse-off period aided by the dc bias. The pulse duration was-250 ns. The pulse repetition rate was 50 Hz. The predicted results were validated against the experimental results conducted on a laboratory model of a wire-plate precipitator. The studies were conducted for dust free conditions.

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Section: Experimental Studiesmentioning

confidence: 71%

“…The Equations (5) to (19) describe the process of negative corona discharge in a wire-cylinder geometry for time scales less than t , . The calculations begin under the influence of the Laplacian field governed by Equation (20). The electronic and ionic charge densities are computed using Equations (8) to (10).…”

Section: Methods Of Solutionmentioning

confidence: 99%