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Model predictive control for ethanol steam reformers with membrane separation

AuthorsSerra, Maria ; Ocampo-Martínez, Carlos ; Li, Mingming; Llorca, Jordi
KeywordsLinear model predictive control
Control-oriented model
Staged-separation membrane reactor
Ethanol steam reformer
Issue Date2017
CitationInternational Journal of Hydrogen Energy 42(4): 1949-1961 (2017)
AbstractThis paper focuses on the dynamic modelling and the predictive control of an ethanol steam reformer (ESR) with Pd[sbnd]Ag membrane separation stage for the generation of pure hydrogen. Hydrogen purity necessary to feed a proton exchange membrane fuel cell (PEMFC) is required. A non-linear dynamic model of the ESR is developed together with a procedure for adjusting the model parameters in order to fit a bank of experimental data of a real ESR system. Static and dynamic analysis of the non-linear ESR model is presented. From this non-linear model, a linear, reduced order and discretised model is derived and a model predictive controller (LMPC) is designed for the ESR system. Control objectives are pure hydrogen flowrate tracking and ethanol inlet minimization. Comparisons between the non-linear and linear models are carried out to determine the control constraints. Finally, simulation results for the implemented LMPC controller are presented and discussed.
Publisher version (URL)https://doi.org/10.1016/j.ijhydene.2016.10.110
Identifiersdoi: 10.1016/j.ijhydene.2016.10.110
issn: 0360-3199
Appears in Collections:(IRII) Artículos
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