Patent ID: 8245493

Claim:
A method for controlling a stoichiometric exhaust gas recirculation power plant arrangement, comprising the steps of: compressing ambient air into a compressed ambient gas flow with at least one main air compressor; delivering at least a first portion of the compressed ambient gas flow, with a compressed ambient gas flow rate, to a turbine combustor that is fluidly connected to the at least one main air compressor via a turbine compressor bypass conduit; delivering a fuel stream, having a fuel stream flow rate, to the turbine combustor for mixing with the at least a first portion of the compressed ambient gas flow and with at least a first portion of a recirculated gas flow to form a combustible mixture; burning the combustible mixture in the turbine combustor and thereby forming the recirculated gas flow and driving a turbine connected to a turbine compressor via a turbine shaft; recirculating the recirculated gas flow from the turbine to the turbine compressor using a recirculation loop; measuring at least one emission level by at least a first emission sensor in the recirculated gas flow; using the at least one emission level measured by the at least a first emission sensor to generate at least a first control signal; and adjusting the fuel stream flow rate based on the at least a first control signal to achieve substantially stoichiometric combustion.