US 11,815,032 B2
Controller and method
Nishant Parsania, North Hykeham (GB)
Assigned to SIEMENS ENERGY GLOBAL GMBH & CO. KG, Munich (DE)
Appl. No. 16/644,803
Filed by Siemens Energy Global GmbH & Co. KG, Munich (DE)
PCT Filed Sep. 12, 2018, PCT No. PCT/EP2018/074613
§ 371(c)(1), (2) Date Mar. 5, 2020,
PCT Pub. No. WO2019/053063, PCT Pub. Date Mar. 21, 2019.
Claims priority of application No. 17191559 (EP), filed on Sep. 18, 2017.
Prior Publication US 2021/0108577 A1, Apr. 15, 2021
Int. Cl. F02C 9/28 (2006.01); F23N 5/18 (2006.01); F23N 5/26 (2006.01); F23R 3/34 (2006.01)
CPC F02C 9/28 (2013.01) [F23N 5/18 (2013.01); F23N 5/265 (2013.01); F23R 3/343 (2013.01); F05D 2220/32 (2013.01); F05D 2270/08 (2013.01); F05D 2270/303 (2013.01); F05D 2270/331 (2013.01); F05D 2270/44 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method of controlling a gas turbine arranged to supply a load, the gas turbine comprising a fuel supply arranged to supply fuel at a fuel flow rate to a combustor, wherein the fuel supply comprises a first fuel supply and a second fuel supply, the method comprising:
measuring an ambient temperature and providing the fuel flow rate based, at least in part, on the measured ambient temperature,
measuring a combustion temperature,
controlling a proportion of the fuel flow rate supplied via the first fuel supply based in part on the fuel flow rate in response to the measured combustion temperature exceeding a predetermined temperature,
setting the proportion of the fuel flow rate supplied via the first fuel supply to be a constant in response to the measured combustion temperature being less than or equal to the predetermined temperature,
wherein the fuel is gaseous fuel or liquid fuel, and
wherein the proportion of the fuel flow rate supplied via the first fuel supply considers one of the following: a pressure drop in a spray of the liquid fuel and a pressure ratio of the gaseous fuel.