摘要
质子交换膜燃料电池通过电化学反应,将氢能转换为电能,由于其高效无污染等优点,如今已受到国内外的广泛关注研究。针对燃料电池阳极供气系统,在MATLAB/Simulink中建立了包括输出电压、阳极流道、比例阀与排气阀、氢气循环泵及供气返回歧管在内的燃料电池阳极供气系统模型,并通过极化曲线实验验证了模型的有效性。在此基础上,系统分析了阳极压力、过氢比、负载电流阶跃变化及周期性排气扰动对系统动态特性的影响。结果表明,各变量之间存在强耦合关系,共同影响燃料电池的输出性能。通过合理控制阳极压力与过氢比,并设计相应的排气策略,可显著提升燃料电池的输出特性与运行可靠性。
Proton exchange membrane fuel cells convert hydrogen energy into electrical energy through electrochemical reactions.Due to their high efficiency and pollution-free advantages,they have received widespread attention and research both domestically and internationally.A fuel cell anode gas supply system model was established in MATLAB/Simulink,including output voltage,anode channel,proportional valve and exhaust valve,hydrogen circulation pump,and gas supply return manifold.The effectiveness of the model was verified through polarization curve experiments.On this basis,the system analyzed the effects of anode pressure,hydrogen excess ratio,step changes in load current,and periodic exhaust disturbances on the dynamic characteristics of the system.The results indicate that there is a strong coupling relationship between the variables,which collectively affects the output performance of the fuel cell.By reasonably controlling the anode pressure and hydrogen excess ratio,and designing corresponding exhaust strategies,the output characteristics and operational reliability of fuel cells can be significantly improved.
作者
龙辉
雷基林
杜旻远
李杰
戈志晖
刘懿
LONG Hui;LEI Jilin;DU Minyuan;LI Jie;GE Zhihui;LIU Yi(Kunming University of Science and Technology,Kunming Yunnan 650500,China;Yunnan Vocational College of Transportation,Kunming Yunnan 650500,China)
出处
《电源技术》
北大核心
2025年第11期2326-2335,共10页
Chinese Journal of Power Sources
基金
云南省重大科技专项计划项目(202402AG050005)。
关键词
燃料电池
阳极供气
模型建立
动态特性
fuel cell
anode gas supply
model building
dynamic characteristics
