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Solar electric energy supply at high altitude

机译：高海拔太阳能供应

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Solar-hydrogen systems were analyzed regarding their usability as energy supply system for high altitude platforms. In a first step for an assessment of solar and photovoltaic resources near-ground spectral transmittances of atmosphere were extended with simplified height correction functions to achieve spectral irradiance descriptions versus atmospheric height up to 25 km. The influence of atmospheric height to different solar cell technologies regarding electrical performance was quantified at some examples for the aspect of spectral distribution with the help of the introduced spectral height factor. The main attention during analysis of the whole solar-hydrogen energy system was directed to characteristics of current or near term available technology. Specific power weight of photovoltaics, electrolyzer, fuel cell and gas tanks and their dependence on operation mode and power range were assessed. A pre-design of a solar-hydrogen energy system was carried out for an airship (volume 580,000 m~3) withstanding continous wind speeds up to ≈ 130 km/h. The calculated coverage ratio of photovoltaics and load share of energy system mark the frame of usability. Depending on the airship size, shape and other external boundary conditions the total electrical energy demand could be covered by a solar-hydrogen energy system of current or near term technology for full year operation. However further investigations are necessary regarding e.g. further mass reductions.
机译：分析了太阳能氢系统作为高海拔平台的能源供应系统的可用性。在评估太阳能和光伏资源的第一步中，使用简化的高度校正功能扩展了大气的近地光谱透射率，以实现相对于不超过25 km的大气高度的光谱辐照度描述。在一些示例中，借助于引入的光谱高度因子，定量了大气高度对不同太阳能电池技术在电气性能方面的影响。在分析整个太阳能-氢能源系统期间，主要关注点是当前或近期可用技术的特征。评估了光伏电池，电解槽，燃料电池和储气罐的比功率重量，以及它们对工作模式和功率范围的依赖性。对一艘飞艇（容量580,000 m〜3）进行了太阳能-氢能系统的预设计，该飞艇的连续风速高达≈130 km / h。计算出的光伏覆盖率和能源系统的负载分担标志着可用性的框架。根据飞艇的大小，形状和其他外部边界条件，总的电能需求可以由当前或近期技术的太阳能氢能系统满足，以进行全年运行。但是，对于例如进一步减少质量。

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