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Integrated Solid Oxide Fuel Cell Power System Characteristics Prediction

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Author(s): Marian GAICEANU | Gianmichele ORSELLO

Journal: Annals of Dunarea de Jos
ISSN 1221-454X

Volume: 32;
Issue: 1;
Start page: 18;
Date: 2009;
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Keywords: solid oxide fuel cell | power conditioning system | mathematical model

ABSTRACT
The main objective of this paper is to deduce the specific characteristics of the CHP 100kWe Solid Oxide Fuel Cell (SOFC) Power System from the steady state experimental data. From the experimental data, the authors have been developed and validated the steady state mathematical model. From the control room the steady state experimental data of the SOFC power conditioning are available and using the developed steady state mathematical model, the authors have been obtained the characteristic curves of the system performed by Siemens-Westinghouse Power Corporation. As a methodology the backward and forward power flow analysis has been employed. The backward power flow makes possible to obtain the SOFC power system operating point at different load levels, resulting as the load characteristic. By knowing the fuel cell output characteristic, the forward power flow analysis is used to predict the power system efficiency in different operating points, to choose the adequate control decision in order to obtain the high efficiency operation of the SOFC power system at different load levels. The CHP 100kWe power system is located at Gas Turbine Technologies Company (a Siemens Subsidiary), TurboCare brand in Turin, Italy. The work was carried out through the Energia da Ossidi Solidi (EOS) Project. The SOFC stack delivers constant power permanently in order to supply the electric and thermal power both to the TurboCare Company and to the national grid.
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