Power plants – Combustion products used as motive fluid
Patent
1994-05-02
1996-01-30
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
60 3927, F02C 950
Patent
active
054872650
ABSTRACT:
A method of minimizing undesirable emissions from and acoustic pressure oscillations in a gas turbine includes the step of coordinating modulation of turbine fuel and air supply signals to maintain the fuel air ration (FAR) within a selected range. Coordination of the modulation of fuel and air supply signals includes the steps of producing a turbine fuel supply control signal in correspondence with a turbine speed error signal, generating a coordinated turbine exhaust temperature error signal by modifying a preliminary turbine exhaust temperature error signal in correspondence with the speed error signal, and producing a turbine air supply control signal from the coordinated turbine exhaust temperature error signal; the coordinated turbine exhaust temperature error signal provides coordination between the turbine fuel supply signal and the turbine air supply signal so as to maintain the fuel-air ratio of the combustible mixture being fed to the turbine within the selected range.
REFERENCES:
patent: 3584459 (1971-06-01), Amann
patent: 3899886 (1975-08-01), Swick
patent: 4529887 (1985-07-01), Johnson
patent: 4550565 (1985-11-01), Ozono
Bulkley Benjamin E.
Minto Karl D.
Norman Bruce G.
Rajamani Ravi
Casaregola Louis J.
General Electric Company
Ingraham Donald S.
Snyder Marvin
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