摘要
为减小压力波动对燃料电池寿命的不利影响,通过仿真及对比试验,探究增加旁通阀对阴极供给系统压力波动的改善效果。根据对燃料电池输出特性与各组件工作原理的分析,建立机理与控制模型;采用基于自抗扰的反向解耦方法实现流量与压力的解耦控制;运用模糊PI方法实现压力波动控制。通过Matlab/Simulink仿真验证了解耦方法在该系统结构下的控制效果,在对比试验中,压力波动峰值分别为无旁通阀1.82kPa与有旁通阀1.09kPa,旁通阀的增加减小了压力波动,使阴极流道压力的稳定性得到了更有效的控制,对提升燃料电池寿命有重要意义。
In order to reduce the adverse effects of pressure fluctuations on the service life of fuel cells,the effectiveness of adding a bypass valve to control pressure fluctuations was investigated through simulation and comparative experiments.Based on the analysis of the fuel cell output characteristics and operating principles of each component,the mechanism and control model were established.An inverted decoupling method based on active disturbance rejection was used to achieve decoupling control of flow and pressure.Pressure fluctuation control was implemented using a fuzzy PI control.The effect of decoupling control within this system structure was verified using the Matlab/Simulink platform.The peak pressure fluctuation in the comparative experiments is 1.09 kPa with the bypass valve and 1.82 kPa without the bypass valve respectively.The addition of a bypass valve can reduce pressure fluctuations,thereby increasing the service life of the fuel cell.
作者
周雅夫
吕浩然
胡宾飞
ZHOU Yafu;LYU Haoran;HU Binfei(School of Automotive Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China;State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,Liaoning,China)
出处
《汽车工程学报》
2024年第4期653-660,共8页
Chinese Journal of Automotive Engineering
基金
辽宁省科学技术计划揭榜挂帅项目(2021JH1/10400076)。
关键词
旁通阀
燃料电池
流量压力解耦控制
压力波动控制
bypass valve
fuel cell
flow and pressure decoupling control
cathode air pressure fluctuation control
