Claims
- 1. A method of active control of surge in a compressor, comprising:
detecting precursor information of the compressor; and controlling the compressor based on the precursor information to avoid a surge condition in the compressor.
- 2. The method of claim 1, wherein detecting precursor information includes the use of a pressure transducer.
- 3. The method of claim 1, wherein detecting precursor information includes measuring an inlet pressure of the compressor and observing frequency and amplitude of a dominant wave of the inlet pressure.
- 4. The method of claim 1, wherein detecting precursor information includes measuring pressure signals at locations where blade passing frequency content exists and observing cross correlations and auto correlations of the measured signals to obtain a measure of disorder in the flow.
- 5. The method of claim 1, wherein detecting precursor information includes measuring pressure signal at locations where blade passing frequency content exists and observing auto correlation of the measured signal to obtain a measure of disorder in the flow.
- 6. The method of claim 1, wherein controlling the compressor includes controlling a bleed air valve.
- 7. The method of claim 1, wherein controlling the compressor includes controlling a fuel valve.
- 8. The method of claim 1, wherein controlling the compressor includes controlling stator guide vanes.
- 9. The method of claim 1, wherein controlling the compressor includes a fuzzy logic scheme.
- 10. The method of claim 1, wherein the compressor is an axial compressor.
- 11. The method of claim 1, wherein the compressor is a centrifugal compressor.
- 12. A compressor system comprising:
a compressor having an inlet and an outlet; a combustor coupled to the outlet of the compressor; a transducer sensing a pressure in the compressor and generating a pressure signal; and a controller using the pressure signal to proactively prevent the compressor from exhibiting into a surge condition.
- 13. The system of claim 10, wherein the compressor is an axial compressor.
- 14. The system of claim 13, wherein the axial compressor includes a rotor and the transducer is located adjacent to the rotor.
- 15. The system of claim 10, wherein the compressor is an centrifugal compressor.
- 16. The system of claim 10, wherein the combustor includes a fuel valve controlled by the controller to control the amount of fuel provided to the combustor.
- 17. The system of claim 10, wherein the compressor includes a bleed air valve controlled by the controller to control a plenum pressure in the combustor.
- 18. The system of claim 10, wherein the compressor includes a stator vane guide controlled by the controller to control the flow of air through the compressor.
- 19. The system of claim 10, wherein the transducer senses a pressure at the inlet of the compressor.
- 20. The system of claim 10, wherein the controller includes an observer capable of identifying at least one of amplitude, frequency, and phase of at least one dominant wave of the pressure signal.
- 21. The system of claim 10, wherein the controller includes an observer capable of identifying at least one of the measure of disorder in the flow using cross and autocorrelation of measured pressure signals.
- 22. The system of claim 10, wherein the controller includes a fuzzy logic control scheme.
- 23. An apparatus for controlling a compressor system, comprising:
means for identifying at least one surge precursor of the compressor system; and means for controlling the compressor system using the surge precursor to proactively prevent the compressing system from entering a surge condition.
- 24. An engine comprising:
a compressor having an inlet and an outlet; a combustor coupled to the outlet of the compressor; a turbine coupled to the compressor; transducer sensing a pressure in the compressor and generating a pressure signal; and a controller using the pressure signal to proactively prevent the system from exhibiting a surge condition.
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of and priority to U.S. Provisional Patent Application Serial No. 60/267,513, entitled “Method and Apparatus for Active Control of Surge in Compressors,” filed Feb. 8, 2001, which is incorporated herein by reference in its entirety.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0002] The U.S. government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of DAAH04-96-1-0008 awarded by the U.S. Army Research Office.
Provisional Applications (1)
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Number |
Date |
Country |
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60267513 |
Feb 2001 |
US |