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Method of controlling operation of an electrostatic precipitator

  • US 4,445,911 A
  • Filed: 12/15/1981
  • Issued: 05/01/1984
  • Est. Priority Date: 12/17/1980
  • Status: Expired due to Term
First Claim
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1. A method of controlling the DC-voltage in an electrostatic precipitator having electrodes energized by pulses superimposed upon a preset DC-voltage, which comprises:

  • periodically eliminating said pulses and thereafter measuring a corona discharge current between said electrodes;

    comparing said measured corona discharge current against a predetermined value; and

    selectively adjusting the DC-voltage in accordance with said measured corona discharge current so as to maintain the DC-voltage at approximately the corona extinction voltage by increasing the DC-voltage when the measured discharge current is lower than said predetermined value and by decreasing the DC-voltage when the measured discharge current is higher than said predetermined value.

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