Dynamic control of a gas turbine engine compressor during rapid transients
First Claim
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1. A method, comprising:
- driving an electric power generator with a gas turbine engine including two or more compressors to produce AC electricity, a first one of the compressors including a compressor variable geometry mechanism;
regulating operation of the first one of the compressors to a desired surge margin, which includes;
determining rotational speed of a second one of the compressors;
adjusting the compressor variable geometry mechanism to a target position as a function of the rotational speed of the second one of the compressors.
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Abstract
A gas turbine engine is disclosed that has with two or more compressors. A first one of the compressors include a compressor variable geometry mechanism that may be in the form of adjustable vanes, bleed valves, or the like. A first one of the compressors is turned at a first speed and the second one of the compressors is turned at a second speed. The first speed is maintained approximately constant while the second speed varies and position of the compressor variable geometry mechanism is modulated in accordance with the second speed of the second one of the compressors to regulate surge margin for the first one of the compressors.
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Citations
23 Claims
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1. A method, comprising:
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driving an electric power generator with a gas turbine engine including two or more compressors to produce AC electricity, a first one of the compressors including a compressor variable geometry mechanism; regulating operation of the first one of the compressors to a desired surge margin, which includes; determining rotational speed of a second one of the compressors; adjusting the compressor variable geometry mechanism to a target position as a function of the rotational speed of the second one of the compressors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method, comprising:
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operating a gas turbine engine with two or more compressors, a first one of the compressors including a compressor variable geometry mechanism; turning a first one of the compressors at a first speed and a second one of the compressors at a second speed; maintaining the first speed approximately constant while the second speed varies; and modulating position of the compressor variable geometry mechanism in accordance with the second speed to regulate surge margin. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. An apparatus, comprising:
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a gas turbine engine including two or more compressors, a first one of the compressors including a compressor variable geometry mechanism; a sensor to provide one or more sensor signals corresponding to rotational speed of a second one of the compressors; a controller operatively coupled to the sensor, the controller including operating logic responsive to the signal to regulate surge margin of the first one of the compressors, the operating logic being structured to select a target position of the compressor variable geometry mechanism as a function of the one or more sensor signals and generate one or more corresponding output signals; and wherein the compressor variable geometry mechanism is responsive to the one or more corresponding output signals to adjust to the target position. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification