The effect of applied control strategy on the current-voltage correlation of a solid oxide fuel cell stack during dynamic operation

Archives of Thermodynamics

Grzegorz BrusAGH University of Science and Technology, 30 Mickiewicza Avenue, 30-059, Krakow, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹  Anna ?ci??koAGH University of Science and Technology, 30 Mickiewicza Avenue, 30-059, Krakow, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹  Janusz S. SzmydCorresponding authorAGH University of Science and Technology, 30 Mickiewicza Avenue, 30-059, Krakow, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹  Shinji KimijimaShibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitamashi, 337-8570 Saitama, JapanOther articles by this author:De Gruyter OnlineGoogle Scholar²  Yosuke KomatsuShibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitamashi, 337-8570 Saitama, JapanOther articles by this author:De Gruyter OnlineGoogle Scholar²  Francesco GhigliazzaSofcpower S.P.A., Via Trento, 115, 38017 Mezzolombardo Trento, ItalyOther articles by this author:De Gruyter OnlineGoogle Scholar³ 

[1] AGH University of Science and Technology, 30 Mickiewicza Avenue, 30-059, Krakow, Poland;Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitamashi, 337-8570 Saitama, Japan;Sofcpower S.P.A., Via Trento, 115, 38017 Mezzolombardo Trento, Italy

关键词: Keywords: Solid oxide fuel cells;    Stack operation;    Dynamic operation;    Current-based fuel control;    Fuel utilization factor;   

DOI  :  10.2478/aoter-2014-0025

学科分类：能源（综合）

来源: Polska Akademia Nauk * Oddzial w Gdansku, Instytut Maszyn Przeplywowych / Polish Academy of Sciences, Institute of Fluid-Flow Machinery

【 摘 要 】

This paper discusses the transient characteristics of the planar type SOFC cell stack, of which the standard output is 300 W. The transient response of the voltage to the manipulation of an electric current was investigated. The effects of the response and of the operating condition determined by the operating temperature of the stack were studied by mapping a current-voltage (I-V) correlation. The current-based fuel control (CBFC) was adopted for keeping the fuel utilization factor at constant while the value of the electric current was ramped at the constant rate. The present experimental study shows that the transient characteristics of the cell voltage are determined by primarily the operating temperature caused by the manipulation of the current. Particularly, the slope of the I-V curve and the overshoot found on the voltage was remarkably influenced by the operating temperature. The different values of the fuel utilization factor influence the height of the settled voltages. The CBFC has significance in determining the slope of the I-V characteristic, but the different values ofthe fuel utilization factor does not affect the slope as the operating temperature does. The CBFC essentially does not alter the amplitude of the overshoot on the voltage response, since this is dominated by the operating temperature and its change is caused by manipulating the current.

【 授权许可】

Unknown