US 11,933,231 B2
Methods and systems for tuning a gas turbine engine
Wenping Wang, Jupiter, FL (US); Matthew Yaquinto, Jupiter, FL (US); Nicolas Demougeot, Jupiter, FL (US); Alex Steinbrenner, Jupiter, FL (US); Cory Dodson, Jupiter, FL (US); and Jaime Serrano, Jupiter, FL (US)
Assigned to Power Systems Mfg., LLC, Jupiter, FL (US)
Filed by Power Systems Mfg., LLC, Juipter, FL (US)
Filed on Feb. 7, 2022, as Appl. No. 17/665,935.
Prior Publication US 2023/0250765 A1, Aug. 10, 2023
Int. Cl. F02C 9/28 (2006.01)
CPC F02C 9/28 (2013.01) [F05D 2270/07 (2013.01); F05D 2270/20 (2013.01)] 30 Claims
OG exemplary drawing
 
11. A system comprising:
an auto-tune controller; and
one or more sensors coupled to a gas turbine engine, the one or more sensors configured to transmit one or more operating parameters associated with the gas turbine engine to the auto-tune controller, wherein the auto-tune controller comprises a memory and a processor, the memory storing computer-executable instructions that, when executed by the processor, cause the processor to perform operations comprising:
performing a sensitivity step process on a tuning parameter of the gas turbine engine comprising:
monitoring an operating parameter of the gas turbine engine, wherein the gas turbine is operating in a first operational state and the operating parameter has an initial condition;
selecting the tuning parameter of the gas turbine engine for adjustment;
adjusting the selected tuning parameter of the gas turbine engine by a predefined amount to generate a biased tuning parameter, the adjusting comprising applying an incremental bias adjustment to a fuel flow fraction schedule;
adjusting operation of the gas turbine engine to a second operational state based on the biased tuning parameter, wherein the operating parameter has an adjusted condition;
applying the adjusted condition and the initial condition of the operating parameter to a cost function;
determining that the cost function results in a cost function value indicative of a decreased cost; and
writing the incremental bias adjustment and the cost function value to a bias look-up table, wherein the incremental bias adjustment and the cost function value are associated with the selected tuning parameter.
 
21. A method for tuning a gas turbine engine, said method comprising:
performing a sensitivity step process on a tuning parameter of the gas turbine engine comprising:
monitoring an operating parameter of the gas turbine engine, wherein the gas turbine is operating in a first operational state and the operating parameter has an initial condition;
selecting the tuning parameter of the gas turbine engine for adjustment;
adjusting the selected tuning parameter of the gas turbine engine by a predefined amount to generate a biased tuning parameter, the adjusting comprising applying an incremental bias adjustment to a fuel flow fraction schedule;
adjusting operation of the gas turbine engine to a second operational state based on the biased tuning parameter, wherein the operating parameter has an adjusted condition;
applying the adjusted condition and the initial condition of the operating parameter to a cost function;
determining that the cost function results in a cost function value indicative of a decreased cost; and
writing the incremental bias adjustment and the cost function value to a bias look-up table, wherein the incremental bias adjustment and the cost function value are associated with the selected tuning parameter.