Comparative Studies on Performance of Two Variants of Nonlinear Kalman Filters for Controlling a Sofc Unit

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Amedi, Hamid Reza | 2012

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 43736 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Pishvaie, Mahmoud Reza
Abstract:
In thisstudy, a three-dimensional modelbased onpartial differential equations (PDEs) was used foraplanarsolid oxidefuel cellunit. These PDEs were evaluatedregardingthe equations ofconservation involvingelectric, ionic charge, mass,energy andmomentum equilibriums.To investigate the behavior and strength of the presented model, thestatic and dynamic analyses were considered. The trend of the system against thechanges incurrent density, flow rateand fuelflow ratewere investigated.The PDE of the real model evaluated using the finite element method inCOMSOLsoftware and The PDE of the EstimatorisimplementedinMATLABenvironment by orthogonalcollocation method.Kalman Nonlinearobserverto estimate thestates (specifically Extended Kalman Filterand Ensemble Kalman Filter) was utilized.Ensemble kalmanfilterestimationwith20 data sets posed a similar optimum behavior in comparison to of extendedkalmanfilter.
Keywords:
Solid Oxide Fuel Cell (SOFC) ; State Estimation ; Extended Kalman Filter ; Ensemble Kalman Filter ; Modeling ; Simulation

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