Skip to Content
Find More Like This
Return to Search

Method and system to estimate variables in an integrated gasification combined cycle (IGCC) plant

United States Patent

September 17, 2013
View the Complete Patent at the US Patent & Trademark Office
System and method to estimate variables in an integrated gasification combined cycle (IGCC) plant are provided. The system includes a sensor suite to measure respective plant input and output variables. An extended Kalman filter (EKF) receives sensed plant input variables and includes a dynamic model to generate a plurality of plant state estimates and a covariance matrix for the state estimates. A preemptive-constraining processor is configured to preemptively constrain the state estimates and covariance matrix to be free of constraint violations. A measurement-correction processor may be configured to correct constrained state estimates and a constrained covariance matrix based on processing of sensed plant output variables. The measurement-correction processor is coupled to update the dynamic model with corrected state estimates and a corrected covariance matrix. The updated dynamic model may be configured to estimate values for at least one plant variable not originally sensed by the sensor suite.
Kumar; Aditya (Niskayuna, NY), Shi; Ruijie (Niskayuna, NY), Dokucu; Mustafa (Niskayuna, NY)
General Electric Company (Niskayuna, NY)
13/ 053,690
March 22, 2011
STATEMENT REGARDING FEDERALLY SPONSORED DEVELOPMENT This invention was made with government support under Contract No. DE-FC26-07NT43094, awarded by the United States Department of Energy. Accordingly, the United States Government may have certain rights in this invention.