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THE START-UP ANALYSIS OF A PEM FUEL CELL SYSTEM IN VEHICLES

机译:车辆中的PEM燃料电池系统的启动分析

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Addressing large load fluctuation in automotive applications, dynamic analysis of a polymer electrolyte membrane fuel cell system is conducted here. Operations of a comprehensive system-level control-oriented fuel cell model with all necessary auxiliary components are demonstrated and simulation results for start-up scenario are presented. It is shown that system stability is influenced by slow thermal management controls. High loads at start-up affect voltage and system efficiency adversely. Cathode inlet water levels are found to be adequate for humidification of recirculated fuel stream. Liquid water at cathode outlet is considerably higher at high current density start-ups, pertaining to water removal issues.
机译:为了解决汽车应用中的大负载波动,本文对聚合物电解质膜燃料电池系统进行了动态分析。演示了具有所有必要辅助组件的综合系统级面向控制的燃料电池模型的运行,并给出了启动方案的仿真结果。结果表明,系统稳定性受缓慢的热管理控制的影响。启动时的高负载会对电压和系统效率产生不利影响。发现阴极入口水位足以使再循环燃料流加湿。在高电流密度启动时,阴极出口处的液态水要高得多,这与除水问题有关。

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