论文标题

垂直机载风能农场,基于多空地系统,每个接地面积高功率密度

Vertical Airborne Wind Energy Farms with High Power Density per Ground Area based on Multi-Aircraft Systems

论文作者

De Schutter, Jochem, Harzer, Jakob, Diehl, Moritz

论文摘要

本文提出并模拟了基于每个接地面积高功率密度(PD)的多空地系统的垂直空降风能(AWE)农场。这些农场由许多独立地面的系统组成,这些系统以相同的倾斜角飞行,但有不同的绳索长度,使所有飞机在大型平面椭圆形区域中飞行,该区域垂直于Tethers。根据风向,各个系统被分配了非重叠的飞行缸。详细的计算考虑了Betz的限制,假设平均风能密度为7 m/s,则可能的年平均PD为43 mW/km $^2 $。在同一风场中,具有典型包装密度的常规风电场将产生2.4兆瓦/km $^2 $的PD。使用最佳控制的更精致的仿真导致实际上推荐的飞行轨迹的6 mw/km $^2 $的较小PD。该PD已经可以用小型飞机实现,机翼跨度为5.5 m。模拟还表明,可实现的PD比具有相同机翼跨度的单动敬畏系统要高的数量级。

This paper proposes and simulates vertical airborne wind energy (AWE) farms based on multi-aircraft systems with high power density (PD) per ground area. These farms consist of many independently ground located systems that are flying at the same inclination angle, but with different tether lengths, such that all aircraft fly in a large planar elliptical area that is vertical to the tethers. The individual systems are assigned non-overlapping flight cylinders depending on the wind direction. Detailed calculations that take into account Betz' limit, assuming a cubically averaged wind power density of 7 m/s, give a potential yearly average PD of 43 MW/km$^2$. A conventional wind farm with typical packing density would yield a PD of 2.4 MW/km$^2$ in the same wind field. More refined simulations using optimal control result in a more modest PD of 6 MW/km$^2$ for practically recommended flight trajectories. This PD can already be achieved with small-scale aircraft with a wing span of 5.5 m. The simulations additionally show that the achievable PD is more than an order of magnitude higher than for a single-aircraft AWE system with the same wing span.

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