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US 7,685,802 B2Granted
Methods and apparatus to facilitate gas turbine fuel control
AssigneeGeneral Electric Company
InventorMajid Feiz
Life of this patent
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Abstract
A method for controlling a dynamic response of a fuel control valve in a gas turbine fuel control system is provided. The method includes regulating a fuel supply pressure for a gas turbine using a component model, sensing a pressure of a fuel supply to the gas turbine, and applying a proportional plus integral control algorithm combined with a gas supply pressure feedforward signal to a pressure command signal controlling the fuel control valve to increase a system response in rejecting a pressure disturbance and increase a disturbance rejection bandwidth of a fuel control valve response.
Claims6
A control system comprising:
- a component model configured to regulate a fuel supply for a gas turbine;
- at least one pressure sensor configured to sense a pressure of fuel supplied to the gas turbine;
- a proportional plus integral controller combined with a fuel supply pressure feedforward configured to provide a feedforward signal that represents a predetermined pressure setpoint for the control system;
- and
- a summer to configured to:
- sum an integral signal with a proportional signal to create an integral/proportional signal;
- add the feedforward signal to the integral/proportional signal to create a feedforward/integral/proportional signal;
- subtract a fuel supply pressure adjustment signal from the feedforward/integral/proportional signal;
- and
- transmit an adjusted feedforward/integral/proportional signal to the component model to facilitate increasing a system response in rejecting a pressure disturbance and increase a disturbance rejection bandwidth of a fuel control valve response.
7 more elements
Dependencies are inferred from the claim text.