Siemens Aktiengesellschaft

Siemens Energy, Inc.

Siemens Energy Global Gmbh & Co. Kg

Danny W Kozachuk

Jatinder P Singh

Damien G Teehan

Satish B Gadde

Krishna C Miduturi

Gary V Hildebrandt

Joseph L Kollar

A control system and method for a gas turbine engine are provided A controller () is responsive to at least one parameter to control an air-to-fuel ratio. The parameter may be a measured engine exhaust temperature from a temperature sensor (). During a transient, such as a ramping condition of the engine, a measured value of such parameter may have a time lag affecting one or more control settings during the transient condition. The controller is programmed to predictively determine a bias for the measured value of the parameter to correct such control settings and avoid combustion instabilities and high emissions during such transient conditions.

Control system and method for controlling a gas turbine engine during transients

A method of controlling fuel flow to a combustor () of a gas turbine engine () during startup of the engine includes determining a relationship between Cand valve position for a flow control valve (e.g.,) in a fuel supply () to the combustor as a function of at least one real time parameter of fuel () in the fuel supply. The method also includes determining a value of the at least one parameter of the fuel before initiating a flow of the fuel to the combustor, and then calculating a first actual Cvalue for the flow control valve at a target flow rate using the determined value of the parameter. The method then includes positioning the flow control valve to a first position corresponding to the actual Cvalue based upon the determined relationship between Cand valve position, and initiating the flow of fuel to the combustor through the flow control valve.

Fuel control for starting a gas turbine engine

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Oviedo, FL, United States of America

Danny W Kozachuk