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首页> 外文期刊>Journal of the American Helicopter Society >Hydrogen Fuel Cell and Battery Hybrid Architecture for Range Extension of Electric VTOL (eVTOL) Aircraft
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Hydrogen Fuel Cell and Battery Hybrid Architecture for Range Extension of Electric VTOL (eVTOL) Aircraft

机译：用于电动VTOL（EVTOL）飞机的范围延伸的氢气燃料电池和电池混合架构

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The objective of this paper is to study the impact of combining hydrogen fuel cells with lithium-ion batteries through an ideal power-sharing architecture to mitigate the poor range and endurance of battery powered electric vertical takeoff and landing (eVTOL) aircraft. The benefits of combining the two sources is first illustrated by a conceptual sizing of an electric tiltrotor for an urban air taxi mission of 75 mi cruise and 5 min hover. It is shown that an aircraft of 5000-6000 lb gross weight can carry a practical payload of 500 lb (two to three seats) with present levels of battery specific energy (150 Wh/kg) if only a battery-fuel cell hybrid power plant is used, combined in an ideal power-sharing manner, as long as high burst C-rate batteries are available (4-10 C). A power plant using batteries alone can carry less than half the payload; use of fuel cells alone cannot lift off the ground. Next, the operation of such a system is demonstrated using systematic hardware testing. The concepts of unregulated and regulated power-sharing architectures are described. A regulated architecture that can implement ideal power sharing is built up in a step-by-step manner. It is found only two switches and three DC-to-DC converters are necessary, and if placed appropriately, are sufficient to achieve the desired power flow. Finally, a simple power system model is developed, validated with test data and used to gain fundamental understanding of power sharing.
机译：本文的目的是研究通过理想的电力共享架构将氢燃料电池与锂离子电池组合的影响，以减轻电池供电的电动垂直起飞和着陆（EVTOL）飞机的差的范围和耐久性。首先是通过75英里巡航的城市空中出租车任务和5分钟的悬停，首先通过电动乘以的概念尺寸来阐述组合两个来源的好处。结果表明，如果仅电池 - 燃料电池混合动力厂，则5000-6000磅毛重重量的飞行器可以携带500磅（两到三个座位）的实际有效载荷（150w / kg）使用，以理想的功率共享方式组合，只要可用的高突发C速率电池（4-10℃）即可。单独使用电池的电厂可以承载不到一半的有效载荷;单独使用燃料电池不能抬起地面。接下来，使用系统硬件测试来证明这种系统的操作。描述了未调节和监管的电力共享架构的概念。可以以逐步的方式建立可以实现理想电力共享的受调节架构。它发现只有两个开关，三个DC-DC转换器是必要的，如果适当地放置，则足以实现所需的功率流动。最后，开发了一种简单的电力系统模型，验证了测试数据，并用于获得对电力共享的基本理解。

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