基于自适应步进式PI控制的燃料电池氢压控制研究  

Research on Hydrogen Pressure Control of Fuel Cells Based on Adaptive Stepping PI Control

作　　者：葛丽霞 吕健璐 GE Lixia;LYU Jianlu(Jiaxing Nanyang Polytechnic Institute,Jiaxing 314000,China;Zhejiang Fengyuan Hydrogen Energy Technology Co.,Ltd.,Jiaxing 314200,China)

机构地区：[1]嘉兴南洋职业技术学院,浙江嘉兴314000 [2]浙江锋源氢能科技有限公司,浙江嘉兴314200

出　　处：《机械工程师》2024年第10期151-156,共6页Mechanical Engineer

基　　金：浙江省教育厅一般科研项目“车用氢燃料电池系统环境适应能力及可靠性研究”(Y202249285)。

摘　　要：燃料电池系统氢气进堆压力控制中,特别是在关机补气、保压测漏等特殊工况下,容易发生超调现象,超调引起的过高氢压或者压差故障,可能对电堆造成损伤。针对该问题,文中提出了一种自适应的步进式氢压控制方法。根据不同运行工况,可对控制参数进行适应调节,并以步进的方式控制氢压到达目标值。通过建立氢气路的压力流量模型,并在Matlab/Simulink中进行算法的仿真验证,最后通过实验对比,证明了该自适应步进式PI控制,比传统的PI控制响应更快,且能抑制氢压超调。Overshoot is easy to occur during the control of hydrogen inlet pressure in fuel cell system,especially under the special conditions such as shutting down gas recharge,pressure maintenance and leakage detection.Overshoot may cause damage to the reactor due to excessive hydrogen pressure or differential pressure failure.To solve this problem,this paper proposes an adaptive stepping hydrogen pressure control method.According to different operating conditions,control parameters can be adjusted adaptively and hydrogen pressure can be controlled in a step-by-step manner to reach the target value.In this paper,the pressure flow model of hydrogen circuit is established,and the algorithm is simulated and verified in Matlab/Simulink.Finally,the experimental comparison proves that the adaptive stepping PI control has faster response than the traditional PI control,and can inhibit hydrogen pressure overshoot.

关 键 词：燃料电池系统 氢压控制 超调量 自适应 步进式PI 

分 类 号：TM911.4[电气工程—电力电子与电力传动] TM910.3