平流层飞艇表面接收太阳能的建模与分析

平流层飞艇依靠艇载自主光伏发电系统摄取太阳辐射能来达到长期自主飞行和悬停,可应用于无线通信、空间观测和军事侦察等领域,成为当前各国研究的热点之一.分析和计算飞艇表面接收的太阳辐射能是光伏系统设计的基础.文中首先建立飞艇表面接收的辐射能量数学模型,它描述了飞艇的工作纬度、飞行方向、表面形状和接收的太阳辐射能量的关系.然后模拟分析飞艇的工作纬度、飞行方向和表面形状对接收的辐射能量的作用.结果表明:飞艇的工作纬度和飞行方向影响飞艇表面接收的辐射能量的大小和时间分布;飞艇表面的不同部分接收的辐射能量是不同的,在飞艇表面合理覆盖光伏阵列是飞艇光伏系统设计的重要任务.

Modeling and Analysis of Solar Energy Collected by Stratosphere Airship's Surface

Stratosphere airship has received a heightened research focus for its potential applications in telecommunication,space observation,military surveillance,and so on.Its long-duration flying relies on its being powered by an autonomous PV power system.Modeling and analysis of the solar energy collected by the airship's surface is the basis for designing the PV power system.A mathematical model is presented that describes the relation among operation latitude,flying direction,surface shape and solar energy collected by the airship's surface.The analysis of the relation among them has been conducted by simulation.The results indicate: operation latitude and flying direction change the quantity and distribution of the solar energy collected by airship's surface.The different parts of the airship's surface have a different ability of collecting solar energy.So the reasonable arrangement of photovoltaic arrays is an important issue in designing the photovoltaic power system.