Control strategy for a solid oxide fuel cell and gas turbine hybrid system

Control strategy for a solid oxide fuel cell and gas turbine hybrid system

This paper presents a multi-loop control strategy for a SOFC/GT hybrid system. A detailed dynamic model of the system is presented and its part-load performance is studied. The control objectives are discussed, with the main issue being a fairly constant fuel cell temperature under all conditions. B...

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Veröffentlicht in:Journal of power sources 2006-07, Vol.158 (1), p.303-315
Hauptverfasser: Stiller, Christoph, Thorud, Bjørn, Bolland, Olav, Kandepu, Rambabu, Imsland, Lars
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Sprache:eng
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Control
Hybrid cycle
Modelling
Part-load
SOFC
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container_end_page 315
container_issue 1
container_start_page 303
container_title Journal of power sources
container_volume 158
creator Stiller, Christoph
Thorud, Bjørn
Bolland, Olav
Kandepu, Rambabu
Imsland, Lars
description This paper presents a multi-loop control strategy for a SOFC/GT hybrid system. A detailed dynamic model of the system is presented and its part-load performance is studied. The control objectives are discussed, with the main issue being a fairly constant fuel cell temperature under all conditions. Based on the system configuration and part-load performance, input and output variables of the control system are detected. Control cycles are introduced and their design is discussed. The responses of the resulting system on load changes, external disturbances as well as malfunction and degradation incidents are investigated. The system is stable under all incidents. An error in fuel flow measurement or assumed fuel quality provokes a steady-state fuel cell temperature offset. For a degraded system, it may be advisable to readjust the control system to the new characteristics.
doi_str_mv 10.1016/j.jpowsour.2005.09.010
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subjects Control
Hybrid cycle
Modelling
Part-load
SOFC
title Control strategy for a solid oxide fuel cell and gas turbine hybrid system
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