Solid oxide fuel cell (SOFC) has been identified as an effective and clean alternative choice for marine power system.This paper emphasizes on the dynamic modeling of SOFC power system and its performance based upon m...Solid oxide fuel cell (SOFC) has been identified as an effective and clean alternative choice for marine power system.This paper emphasizes on the dynamic modeling of SOFC power system and its performance based upon marine operating circumstance.A SOFC power system model has been provided considering thermodynamic and electrochemical reaction mechanism.Subcomponents of lithium ion battery, power conditioning unit, stack structure and controller are integrated in the model.The dynamic response of the system is identified according to the inertia of its subcomponent and controller.Validation of the whole system simulation at steady state and transit period are presented, concerning the effects of thermo inertia, control strategy and seagoing environment.The simulation results show reasonable accuracy compare with lab test.The models can be used to predict performance of a SOFC power system and identify the system response when part of the component parameter is adjusted.展开更多
The stability of micro-tubular solid oxide fuel cell （MT-SOFC） is predicted at ambient and operating temperatures via simulation method. The results reveal that as long as the anode failure probability satisfies the...The stability of micro-tubular solid oxide fuel cell （MT-SOFC） is predicted at ambient and operating temperatures via simulation method. The results reveal that as long as the anode failure probability satisfies the failure criterion of 1E-6 at ambient temperature, the anode will retain its structural integrity at operating temperature. For the electrolyte or cathode, the stress strength ratio at operating temperature is significantly higher than that at ambient temperature. For an inappropriate component thickness, the cathode maybe fractures at operating temperature. In order to ensure the stability of MT-SOFC, the cathode thickness must be smaller than the maximum cathode thickness （tmax-cathode）, which is derived from. tmax-cathode = 5.49 ＋ 5.54 te展开更多
文摘Solid oxide fuel cell (SOFC) has been identified as an effective and clean alternative choice for marine power system.This paper emphasizes on the dynamic modeling of SOFC power system and its performance based upon marine operating circumstance.A SOFC power system model has been provided considering thermodynamic and electrochemical reaction mechanism.Subcomponents of lithium ion battery, power conditioning unit, stack structure and controller are integrated in the model.The dynamic response of the system is identified according to the inertia of its subcomponent and controller.Validation of the whole system simulation at steady state and transit period are presented, concerning the effects of thermo inertia, control strategy and seagoing environment.The simulation results show reasonable accuracy compare with lab test.The models can be used to predict performance of a SOFC power system and identify the system response when part of the component parameter is adjusted.
基金the financial support of the National Science Foundation of China (21406095)the Jiangsu Province Colleges and Universities Natural Science Projects (13KJB480003)
文摘The stability of micro-tubular solid oxide fuel cell （MT-SOFC） is predicted at ambient and operating temperatures via simulation method. The results reveal that as long as the anode failure probability satisfies the failure criterion of 1E-6 at ambient temperature, the anode will retain its structural integrity at operating temperature. For the electrolyte or cathode, the stress strength ratio at operating temperature is significantly higher than that at ambient temperature. For an inappropriate component thickness, the cathode maybe fractures at operating temperature. In order to ensure the stability of MT-SOFC, the cathode thickness must be smaller than the maximum cathode thickness （tmax-cathode）, which is derived from. tmax-cathode = 5.49 ＋ 5.54 te
