operating point optimization of a hydrogen fueled hybrid solid oxide fuel cell-steam turbine (sofc-st) plant

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ID: 129159
2013
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Abstract
This paper presents a hydrogen powered hybrid solid oxide fuel cell-steam turbine (SOFC-ST) system and studies its optimal operating conditions. This type of installation can be very appropriate to complement the intermittent generation of renewable energies, such as wind generation. A dynamic model of an alternative hybrid SOFC-ST configuration that is especially suited to work with hydrogen is developed. The proposed system recuperates the waste heat of the high temperature fuel cell, to feed a bottoming cycle (BC) based on a steam turbine (ST). In order to optimize the behavior and performance of the system, a two-level control structure is proposed. Two controllers have been implemented for the stack temperature and fuel utilization factor. An upper supervisor generates optimal set-points in order to reach a maximal hydrogen efficiency. The simulation results obtained show that the proposed system allows one to reach high efficiencies at rated power levels.
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ugartemendia2013energiesoperating Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Juanjo Ugartemendia;Itziar Zubia;J. Xabier Ostolaza
Journal acs combinatorial science
Year 2013
DOI
10.3390/en6105046
URL
http://www.mdpi.com/1996-1073/6/10/5046
Keywords
Fuel cell solid oxide fuel cell (sofc) bottoming cycletechnology

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