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US 12,006,880 B2Granted
High bandwidth control of turbofan/turboprop thrust response using embedded electric machines
AssigneeGeneral Electric Company
InventorsHarry Kirk Mathews, Jr., Stefan Joseph Cafaro, Brendon Leeker, Kevin Graziano
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Abstract
Systems and methods for high bandwidth control of thrust response for turbofan or turboprop engines are provided. Such systems and methods include an engine control system that processes a rate command and a feedback signal from an engine to generate separate fuel and electric machine control signals that respectively control fuel and electric machine dynamics of the engine to produce engine dynamics that result in desired thrust response.
Claims17
An engine control system comprising:
- a fuel controller that directs supply of fuel to a turbine engine based on a first error signal;
- an electric machine controller that directs one or more electric machines to apply positive torque to the turbine engine based on an electric machine control signal;
- and
- a disturbance observer electrically coupled to the electric machine controller,
- wherein the disturbance observer generates a second error signal, the second error signal being for an expected response of the turbine engine to the fuel controller, and
- wherein the disturbance observer generates the electric machine control signal from the second error signal.
3 more elements
A method for controlling engine thrust, the method comprising:
- generating a fuel control signal and an electric machine control signal from a rate command and a feedback signal from a turbine engine by:
- subtracting the feedback signal from the rate command to generate a first error signal;
- passing the first error signal to a fuel controller of the turbine engine as the fuel control signal;
- processing the feedback signal through an inverse linearized model of operation of the turbine engine by the fuel controller to generate an expected response;
- subtracting the first error signal as sent through a first filter from the expected response as sent through a second filter to generate a second error signal;
- and
- passing the second error signal to an electric machine controller as the electric machine control signal;
- directing, via the fuel control signal sent to the fuel controller, supply of fuel to the turbine engine based on the fuel control signal;
- and
- directing, via the electric machine control signal sent to the electric machine controller, an electric machine to apply positive torque to the turbine engine based on the electric machine control signal.
7 more elements
Dependencies are inferred from the claim text.