The performance of thermal based modified solid oxide fuel cell (SOFC) model under different DC load conditions

Journal of Engineering Research

Ayetül GELEN¹  Tankut YALCINOZ² 

[1] Gaziosmanpasa University;Mevlana University

关键词: Different load types;    Load following;    Solid Oxide Fuel Cell;    Thermal model.;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: Kuwait University * Academic Publication Council

【 摘 要 】

In this paper, a thermal-baseddynamic model of a Solid Oxide Fuel Cell under different direct current loadconditions is improved by using our previous developed fuel cell model, whichincludes ohmic, activation and concentration voltage losses, thermal dynamics,and methanol reformer. The modified SolidOxide Fuel Cell model covers restriction of fuel utilization factor. Hence, the voltage and power of the Solid OxideFuel Cell stack are limited to avoid excessive fuel flow and temperature. The SolidOxide Fuel Cell model is developed in a Matlab/Simulink environment and testedfor different direct current load conditions, which are step, ramp, random and stair-caseloads. The simulation results show that the modified Solid Oxide Fuel Cellmodel can be used to precisely follow the direct current load variations. Thisis true because reaching thesteady state of the system takes a shorter time for the ramp load, and takes a longertime for the step load. Besides, the limitation of the fuel utilizationfactor can be seen more clearly from the system with the stair-case load.

【 授权许可】

Unknown