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

被引：174
|
作者：
Stiller, Christoph
Thorud, Bjorn
Bolland, Olav
Kandepu, Rambabu
Imsland, Lars
机构：
[1] Norwegian Univ Sci & Technol, Dept Energy & Proc Engn, NO-7491 Trondheim, Norway
[2] Norwegian Univ Sci & Technol, Dept Engn Cybernet, NO-7491 Trondheim, Norway
来源：
JOURNAL OF POWER SOURCES | 2006年 / 158卷 / 01期
关键词：
SOFC; hybrid cycle; modelling; part-load; control;
D O I：
10.1016/j.jpowsour.2005.09.010
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：303 / 315
页数：13
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