Method for producing a model-based control device
OwnerBruno Schuermans, Christian Paschereitinventors
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Abstract
Relating to a model-based active control system for a gas turbine, a method for obtaining the data that are used for deriving an active closed loop controller for the gas turbine includes splitting the combustion system into a number of submodels. The measurement of some submodels is achieved by system identification on a single burner test facility. Other submodels are then determined by using known acoustic models. The different submodels are subsequently combined to form an acoustic network model that is subsequently used to develop a closed loop controller.
Claims10
A method for producing a control device for controlling pressure pulsations in a combustion process that is running in a combustion chamber, operated at high pressure, of a gas turbine operating with a number of burners, a closed loop controller of the control device operating with the aid of a control algorithm that is based on an overall mathematical model of the acoustic behavior of the combustion system, the method comprising:
- subdividing the overall model into a number of submodels of which at least one is configured as an analytical submodel that can be calculated by physical relationships, and at least one submodel is configured as an empirical submodel that can be determined by experimental measurements;
- determining the at least one empirical submodel by carrying out experimental measurement on a test facility a test facility gas turbine of which has only a single test facility burner and a test facility combustion chamber operating at atmospheric ambient pressure;
- calculating the at least one analytical submodel by taking into account the results of the experimental measurements in order to determine the at least one empirical submodel;
- and
- networking the determined and calculated submodels at least with computational transformation of the single burner ambient pressure test facility gas turbine to form the multi burner high-pressure gas turbine.
Dependencies are inferred from the claim text.