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Electrostatic fluid accelerator and method for control of a fluid flow

A technology of current and control devices, applied in the field of generating corona discharge

Inactive Publication Date: 2011-01-12
TESSERA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] As noted above, existing techniques and devices only address spark events after spark initiation; there is no commercially practical solution to prevent sparking from occurring

Method used

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  • Electrostatic fluid accelerator and method for control of a fluid flow
  • Electrostatic fluid accelerator and method for control of a fluid flow
  • Electrostatic fluid accelerator and method for control of a fluid flow

Examples

Experimental program
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Embodiment Construction

[0121] figure 1 is a schematic circuit diagram of a high voltage power supply (HVPS) 100 configured to prevent spark events within a high voltage device such as an electrostatic fluid accelerator. HVPS 100 includes a high voltage step-up transformer 106 with a primary winding 107 and a secondary winding 108 . The primary winding 107 is connected to an ac voltage provided by the DC voltage source 101 through the half-bridge converter (power transistors 104, 103 and capacitors 105, 114). A gate signal controller 111 generates control pulses at the gates of transistors 104, 113, the frequency of which is determined by the values ​​of resistor 110 and capacitor 116 forming an RC timing circuit. The secondary winding 108 is connected to a voltage rectifier 109 comprising four high voltage (HV), high frequency diodes configured as a full wave bridge rectifier circuit. HVPS 100 generates a high voltage between terminal 120 and ground, which are connected to a HV device or electrode...

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PUM

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Abstract

A device for handling a fluid includes a corona discharge device (602) and an electric power supply (601). The corona discharge device (602) includes at least one corona discharge electrode (603) and at least one collector electrode (605) positioned proximate each other so as to provide a total inter-electrode capacitance within a predetermined range. The electric power supply (601) is connected to supply an electric power signal to the corona discharge and collector electrode (603, 605) so as to cause a corona current to flow between the corona discharge and collector electrodes (603, 605). An amplitude of an alternating component of the voltage of the electric power signal generated is no greater than one-tenth that of an amplitude of a constant component of the voltage of the electric power signal. The alternating component of the voltage is of such amplitude and frequency that a ratio of an amplitude of the alternating component of the highest harmonic of the voltage divided by anamplitude of the constant component of the voltage being considerably less than that of a ratio of an amplitude of the highest harmonic of the alternating component of the corona current divided by an amplitude of the constant component of the corona current, i.e., (Vac / Vdc) < (Iac / Idc).

Description

[0001] related application [0002] The entire contents of the following patents are incorporated herein by reference: Serial No. 10 / 187,983, "Spark Control Method and Apparatus," filed July 3, 2002; Serial No. 10 / 352,193, "Electrostatic Fluid Accelerators and Methods of Controlling Fluid Flow"; "Electrostatic Fluid Accelerators," Serial No. 09 / 419,720, filed October 14, 1999; "Electrostatic Fluid Accelerators," Serial No. 10 / 175,947, filed January 21, 2002. Method and Apparatus for Controlling Fluid Acceleration"; Serial No. 10 / 188,069, "Electrostatic Fluid Accelerator and Method of Controlling Fluid Flow," filed July 3, 2002. technical field [0003] The present invention relates to methods and apparatus for generating corona discharges, and in particular to methods and apparatus for fluid acceleration to provide velocity and momentum to a fluid, especially air, using ions and such electric fields for motion , and the control of such fluids. Background technique [0004]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J7/24H01T23/00H01T19/00B03C3/68H05H1/24
CPCH05H1/24B03C3/68B03C2201/14H05H1/471
Inventor I·A·克里克塔弗维奇V·L·格罗伯特斯
Owner TESSERA INC