摘要
为了满足航空领域飞机飞行过程中的变负载需求,并获得飞机全飞行过程中的高效能量供给方案,本文搭建了直接氨固体氧化物燃料电池(Solid oxide fuel,cells,SOFC)-锂电池混合动力系统架构,采用基于规则的能量分配策略,开展了典型飞行任务中系统参数的匹配方法和海拔高度对混动系统性能的影响,以及典型飞行包线中混合动力系统的效率和功重比等参数的影响研究。结果表明:以BAe.146四发涡扇短程运输机的飞行为例,系统净发电效率为53.32%,功重比为0.4913 kW/kg,且SOFC系统输出功率和发电效率随着海拔上升而下降。这表明直接氨SOFC-锂电池混合动力系统能够满足不同飞行阶段的能量需求,也为混合动力系统在不同飞行高度下的优化设计提供了重要依据。
To meet the varying load demands and improve the efficiency of the power system during aircraft flights in the aviation field,a hybrid power system architecture combining direct ammonia solid oxide fuel cells(SOFCs)and lithium batteries is established.A rule-based energy distribution strategy is adopted for the comparative analysis of parameters such as efficiency and power-to-mass ratio of the hybrid system within the typical flight envelope.The aim is to find an optimal energy supply scheme for the entire flight process of the aircraft.In the case of the BAe.146,a four-engine turbofan short-range transport aircraft,a net power generation efficiency of 53.32%and a power-to-mass ratio of 0.4913 kW/kg are achieved.Furthermore,it has been found that the output power and power generation efficiency of the SOFC system decrease with increasing altitude.These results indicate that the direct ammonia SOFC-lithium battery hybrid power system is capable of meeting the energy demands of different flight phases and holds promising application prospects in the aviation field.
作者
张业鹏
梁凤丽
毛军逵
蒋新勇
ZHANG Yepeng;LIANG Fengli;MAO Junkui;JIANG Xinyong(College of Energy and Power Engineering,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China)
出处
《南京航空航天大学学报》
CAS
CSCD
北大核心
2024年第5期862-875,共14页
Journal of Nanjing University of Aeronautics & Astronautics
基金
国防科技“一七三”计划基金-重点项目(2021-JCJQ-JJ-0339)
先进航空动力创新工作站基金(HK-CX2022-01-002)
中国航空发动机集团产学研合作项目(HFZL2022CXY032)
航空科学基金(20230040052004)。
关键词
航空动力
SOFC-锂电池
混合动力系统
能量分配策略
系统效率
功重比
aviation power
SOFC-lithium battery
hybrid power system
energy allocation strategy
system efficiency
power-to-mass ratio
