飞行汽车混动系统动力电池和增程器的协调控制

城市空中交通（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。本文总结了垂直起降飞行汽车（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，其中同时考虑了两种操作模式。根据实际操作条件，预设了垂直起降和平飞两种工况下不同的操作模式。在此基础上，研究了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的协调。直流母线电压则由DC/DC转换器调节。为了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。

Coordination and control of power batteries and processors in the flight car hybrid system

Urban Air Mobility (UAM), is a recent and effective solution to the current ground traffic congestion dilemma. Power and propulsion systems are one of the key technologies for commercial applications of flying vehicles. Therefore, it is crucial to study the operating characteristics of the power system under typical mission profiles of flying vehicles. Due to the limitation of battery energy density and the range limitation of pure electric flying cars, it is more reasonable to use hybrid oil-electric power system for flying cars. This paper summarizes the research related to the operational performance of the hybrid system under the mission profile of vertical takeoff and landing flying vehicle (VTOL). Based on MATLAB Simulink, a hybrid coordination method is proposed, in which two operation modes are considered simultaneously. According to the actual operating conditions, different operation modes are preset for two operating conditions of vertical takeoff and landing and level flight. Based on this, the coordination of the range extender, which is the main power source, to regulate the power flow and the battery, which improves the efficiency of the range extender, is studied. The generator is injected with rated power to maximize generator efficiency, while the DC bus voltage is regulated by a DC/DC converter. Power sharing during charging and discharging states is achieved in order to benefit the overall battery pack life. Simulation results show that the DC bus voltage can be well controlled and that the power sharing between the range extender and the battery follows the design.