Patent
Electrostatic precipitator slow pulse generating circuit
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TLDR
In this article, an apparatus and method for generating slow rise-time, high voltage electrical pulses to a load, preferably using an existing transformer/rectifier set or power supply to charge an inversion or high voltage switching circuit to produce the pulsed voltage.Abstract:
An apparatus and method for generating slow rise-time, high voltage electrical pulses to a load, preferably using an existing transformer/rectifier set or power supply to charge an inversion or high voltage switching circuit to produce the pulsed voltage. An energy recovery circuit ( 100, 102 ) is used to return unused energy from the load ( 24 ) back to the means for producing pulsed voltage ( 110, 130 ). A load matching circuit ( 120 ) uses a blocking diode and a capacitor for charging the load. An additional blocking diode ( 32 ) inhibits load voltage discharge back through the slow pulse generating circuit. A transformer ( 20 ) can be used to step-up voltage from the inversion circuit, or high voltage switching circuit, to the load. One or more magnetic switch stages are used to transfer energy from the inversion circuit, or high voltage switching circuit, to the load matching circuit. A fire-on voltage controller ( 66 ) triggers the inversion or high voltage switching circuit.read more
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References
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Patent
Electrostatic precipitator power supply
Richard Dipl.-Ing. Dallhammer,Franz Dipl Ing Neulinger,Walter Dipl.-Ing. Schmidt,Helmut Schummer +3 more
TL;DR: In this article, an electrostatic precipitator is supplied with a d-c voltage of variable level upon which is superimposed a series of voltage pulses, and the difference between a positive current-time area and a negative current time area beneath a current-voltage curve is determined and maximized by changing the pulse amplitude, pulse width, pulse repetition frequency and/or the rate of pulse rise.
Patent
Pulsed power supply for an electrostatic precipitator
TL;DR: In this article, a method and apparatus for generating a supply of pulsed power to an electrostatic precipitator where a residual collection field is maintained on the electrodes during interpulse periods while, in addition, high voltage pulses in excess of the residual are periodically impressed on electrodes.
Patent
Modulated power supply for an electrostatic precipitator
Finney James A,Gallo Frank +1 more
TL;DR: In this paper, an electrostatic precipitator system powered by a primary power source, the power supply has a converter and a high voltage device, which can be coupled to the primary source for producing a converter voltage with a different frequency content.
Patent
A method of controlling intermittant voltage supply to an electrostatic precipitator
TL;DR: In this article, a search procedure is carried out at predetermined time intervals or at time intervals determined by one or more continuously monitored/measured precipitator or operational parameters, and the search is stopped when the relation between the charge transmitted per system half-period and the maximum voltage at transition from one search stage to the succeeding one remains constant or increases.