Operating Point Optimization of a Hydrogen Fueled Hybrid Solid Oxide Fuel Cell-Steam Turbine (SOFC-ST) Plant

被引:9
作者
Ugartemendia, Juanjo [1 ]
Xabier Ostolaza, J. [2 ]
Zubia, Itziar [1 ]
机构
[1] Univ Basque Country UPV EHU, Dept Elect Engn, Donostia San Sebastian 20018, Spain
[2] Univ Basque Country UPV EHU, Syst Engn & Control Dept, Donostia San Sebastian 20018, Spain
关键词
solid oxide fuel cell (SOFC); hybrid generation; steam turbine; fuel cell; wind generation; gas turbine; bottoming cycle; EXERGY ANALYSIS; DYNAMIC-MODEL; POWER; SYSTEMS; PERFORMANCE; ENERGY;
D O I
10.3390/en6105046
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
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.
引用
收藏
页码:5046 / 5068
页数:23
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