陈骞,周竞,陆翌,裘鹏,丁超,倪晓军
CHEN Qian,ZHOU Jing,LU Yi,QIU Peng,DING Chao,NI Xiaojun

• 1:国网浙江省电力有限公司电力科学研究院
• 2:国网浙江省电力有限公司杭州供电公司

摘要(Abstract)：

随着能源危机和环境污染问题加剧,燃料电池因其绿色环保得到了越来越多的应用。受调节进气量机械装置的限制,燃料电池的动态性能较差,响应速度较慢,因此需要选择蓄电池、超级电容等作为辅助电源提供瞬时功率、配合燃料电池发电。基于主电源燃料电池和辅助电源超级电容并联供电的架构,分析了各种可能出现的能量流动工况,提出了超级电容后级变换器控制母线电压、燃料电池后级变换器控制超级电容电压的系统控制策略。最后搭建了燃料电池发电系统仿真平台,对2种稳态工况和3种动态工况开展仿真分析,仿真结果证明:提出的控制策略具有优异的直流母线稳态和动态特性,实现能量在主辅电源以及负载之间的合理分配,保证燃料电池的安全稳定运行。
As the energy crisis and environmental pollution are becoming increasingly serious, fuel cell, as environmental-friendly green energy, is adopted in more and more applications. Restricted by mechanical devices that regulate the intake of air, the dynamic performance of fuel cells is poor and the response speed is slow. Therefore, batteries and ultracapacitors need to be selected as auxiliary power sources to provide instantaneous power and generate electricity with fuel cells. The paper analyzes various operating conditions of energy flow based on a paralleled power supply framework of fuel cell and ultracapacitor which serve as main power supply and auxiliary power supply respectively, and proposes a control strategy: ultracapacitor converter controls bus voltage and fuel cell converter controls ultracapacitor voltage. Lastly, a simulation platform of a fuel cell power generation system is built up to simulate two steady-state operating conditions and three dynamic operating conditions. Simulation results show that the control strategy proposed in this paper has excellent steady-state and dynamic characteristics of the DC bus, realizing the reasonable distribution of energy between the main and auxiliary power supply and the load, and ensuring the safe and stable operation of the fuel cell.

关键词(KeyWords)： 燃料电池;超级电容;斜率限制;单向变换器;双向变换器
fuel cell;ultracapacitor;slope limit;uni-directional converter;bi-directional converter

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 陈骞,周竞,陆翌,裘鹏,丁超,倪晓军
CHEN Qian,ZHOU Jing,LU Yi,QIU Peng,DING Chao,NI Xiaojun

DOI: 10.19585/j.zjdl.202101017

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