Patent
Automatic controller for electrostatic precipitator
TLDR
In this paper, a hill climbing technique is used to increase the input energy to the electrostatic precipitator electrodes until the electrode potential decreases, and then the voltage is controlled by an automatic voltage controller including an electrode potential sense circuit.Abstract:
By using a hill climbing technique, the input energy to the electrostatic precipitator electrodes is automatically increased until the electrode potential decreases. In response to the electrode potential decrease, the input energy is decreased. The electrode potential is controlled by an automatic voltage controller including an electrode potential sense circuit. The controller includes a digital store for increasing the count of the store and means responsive to the count in the store provide an output signal related to the count and means responsive to the signal from the electrode potential sensing circuit which is indicative of a fall in the electrode potential is used to reduce the count in the store. The count in the store is converted into an analog voltage used to control the duty cycle of thyristers and thus the precipitator electrode potential.read more
Citations
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Patent
System for controlling an electrostatic precipitator using digital signal processing
Gallo Frank,Jean-François Vicard +1 more
TL;DR: In this article, a system for controlling an electrostatic precipitator (10, 12) adapted to be powered by an alternating power source (60) includes means for regulating (Q2, Q4, 14) at least one precipitators operating parameter in response to at least a control signal, and measurement means (110, 120) coupled to the precipitors for providing measurement signals corresponding to precipitors secondary voltage and secondary current.
Patent
Method of controlling operation of an electrostatic precipitator
TL;DR: In this paper, a method for controlling the operating parameters of an electrostatic precipitator of the type having electrodes energized by pulses superimposed upon a DC-voltage is disclosed.
Patent
Detector for detecting voltage breakdowns on the high-voltage side of an electric precipitator
TL;DR: A detector for detecting breakdowns on the highvoltage side of an electric precipitator, the voltage of which was supplied from an a-c network through a thyristor control circuit, a high-voltage transformer and a rectifier, was presented in this article.
Patent
Monolithic solid state power controller
William A. McFall,Stanley A. White,Howard K. Lane,Daryl T. Butcher,Donald V. Anderson,Patrick E. McCollum,James F. Kirk,Richard Plesset +7 more
TL;DR: In this paper, the current sensing and trip timing logic functions are implemented in a monolithic device, which provides flexible mode of operation of the switch, operator command validation, status and mode indication, drive enablement in synchronization with zero voltage crossing of the source voltage, and tripout operation in synchrony with zero current crossing in the load current.
Patent
High voltage control of an electrostatic precipitator system
TL;DR: In this article, a precipitator system including a voltage controller and a conductive element coupled to the high voltage converter is described. And the controller is used to adjust the control signal when a spark is imminent, thereby avoiding it.
References
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Patent
Spark interval responsive precipitator voltage control
TL;DR: In this paper, a method and digital circuit for modifying the voltage applied to the electrodes of a precipitator in accord with the elapsed time interval between the presently detected spark and the spark immediately preceding is presented.
Patent
Apparatus for controlling the mean value of current supplied by an alternating current source to an electric apparatus
TL;DR: In this article, a cycle counter with N binary flip-flops providing N binary signal combinations of a series of 2N pulses was used to regulate the mean value of current supplied by an AC current source to an electrical apparatus, dependent on data supplied by a computer.
Patent
Circuit arrangement for automatic control of the voltage of an electrical filter
TL;DR: In this article, a photo element is coupled by a circuit to the discharging circuit for supplying a control signal dependent upon the irradiation of the photo element, whereby the control signal controls the controllable resistor of the discharge circuit to a low resistance value when the glow lamp does not glow and controls the control resistor to a high resistence value when a glow lamp glows.