摘要
城市空中交通(urban air mobility, UAM),是近期解决当前地面交通拥堵困境的有效方法。因此,研究飞行汽车典型飞行任务剖面下的动力系统工作特性至关重要。由于电池能量密度的限制以及纯电动飞行汽车的里程限制,因此使用油电混合作为飞行汽车的动力系统更为合理。总结垂直起降飞行汽车(vertical takeoff and landing, VTOL)任务剖面下混动系统运行性能的相关研究。基于MATLAB Simulink,提出一种混合动力的协调方法,其中同时考虑两种操作模式。根据实际操作条件,预设垂直起降和平飞两种工况下不同的操作模式。在此基础上,研究作为主要电源的增程器调节功率流和提高增程器工作效率的电池协调。直流母线电压由DC/DC转换器调节,有利于电池组的整体寿命,实现了充电和放电状态期间的功率共享。仿真结果表明:可以很好地控制直流母线电压,并且增程器和电池之间的功率共享遵循设计。
Urban air mobility(UAM)represents a promising solution for alleviating contemporary ground traffic congestion challenges.Consequently,a comprehensive analysis of power system operational characteristics within typical flight mission profiles for flying cars is of utmost importance.Due to constraints associated with battery energy density and the limited range of all-electric flying cars,the adoption of an oil-electric hybrid power system for flying cars is a more pragmatic choice.An overview of pertinent research concerning the operational performance of hybrid systems in vertical takeoff and landing(VTOL)vehicles was provided.Utilizing MATLAB Simulink,a hybrid power coordination method was proposed that accounted for both operational modes.Distinct operational modes were predefined in accordance with actual operational conditions,encompassing vertical take-off and landing as well as level flight scenarios.Building upon this foundation,the coordination of the battery was explored,serving as the primary power source,to regulate power flow and enhance the efficiency of the range extender.The DC bus voltage was subject to regulation through a DC/DC converter.To promote the overall longevity of the battery pack,power sharing mechanisms were introduced during both charging and discharging phases.Simulation results underscore the proficient control of the DC bus voltage,and power distribution between the range extender and the battery aligns with the predetermined design parameters.
作者
张钰锋
李京阳
宝音贺西
ZHANG Yu-feng;LI Jing-yang;BAOYIN He-xi(School of Mechanical Engineering,Tiangong University,Tianjin 300387,China;Beijing TsingAero Armament Technology Co.,Ltd.,Beijing 102101,China;School of Aerospace Engineering,Tsinghua University,Beijing 100084,China)
出处
《科学技术与工程》
北大核心
2024年第16期6943-6950,共8页
Science Technology and Engineering
基金
国家自然科学基金(11602123)
内蒙古自治区杰出青年培育基金(2019JQ002)。
关键词
飞行汽车
多源混动系统
功率分配
flying cars
multi-source hybrid systems
power distribution
