化工学报2019，Vol.70Issue(z2)：329-335,7.DOI:10.11949/0438-1157.20190597
无人机用燃料电池系统性能分析
Performance analysis of fuel cell system for unmanned aerial vehicle
摘要
Abstract
The biggest technical difficulty in developing small drones is to solve the problems of their power systems. In order to maintain the flight of aircraft, the power system of small drone also provides energy for the airborne equipment. Therefore, the unmanned aerial vehicle (UAV) power unit requires a small volume with high energy density, and can be easily and efficiently converted into thrust force. In this paper, proton exchange membrane fuel cell (PEMFC) is used as the power source candidate of the UAV. Based on the PEMFC stack model and the environmental model, numerical simulations were conducted by Matlab to investigate the effect of altitude on operation status and thermodynamic performance of PEMFC system. The results indicated that as the height increases, the variations of system output voltage, output electric power and system electrical efficiency exhibit a downward trend. When the height is constant, the output power of the system has the highest value with the rise of current density, but the output voltage of the stack and the output efficiency of the system decrease. Moreover, it has been found that the increase of the hydrogen inlet pressure intensifies the output voltage, electric power and electrical efficiency of the system. For the purpose of performance improvement of PEMFC system at a certain height, it is necessary to select a suitable current density and a high hydrogen inlet pressure.关键词
燃料电池/无人机/海拔高度/动态仿真/热力学性质Key words
fuel cells/ unmanned aerial vehicle/ altitude/ dynamic simulation/ thermodynamic properties分类
信息技术与安全科学引用本文复制引用
万忠民,全文祥,阎瀚章,陈曦,黄泰明,张焱,张敬,孔祥忠..无人机用燃料电池系统性能分析[J].化工学报,2019,70(z2):329-335,7.基金项目
国家自然科学基金项目(51676067,51706064) （51676067,51706064）
湖南省杰出青年基金项目(2018JJ1011) （2018JJ1011）
