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为满足微小卫星编队飞行与无线能量传输技术协调发展的需求,提出并设计一种以会聚太阳光作传输媒介的空间无线能量传输系统。系统以菲涅尔透镜作为太阳光聚集装置,利用光纤束对会聚太阳光转向,后端使用斯特林发动机作热电转换装置。通过对能量供给平台各部分光学效率的设计计算以及对斯特林发动机的等温分析法分析,得出系统各环节的效率分配,在100 m距离上输出电功率234 W,系统从能量收集端入口到接收端出口的总效率达20%。
In order to meet the needs of coordinated development of micro-satellite formation flying and wireless energy transmission technology, a space wireless energy transmission system using convergent sunlight as a transmission medium is proposed and designed. The system uses the Fresnel lens as a solar light gathering device, uses a fiber bundle to divert the concentrated sunlight, and uses a Stirling engine as a thermoelectric conversion device at the back end. Through the design and calculation of the optical efficiency of each part of the energy supply platform and the isothermal analysis of the Stirling engine, the efficiency distribution of each part of the system is obtained. The output electric power is 234 W at a distance of 100 m. The total efficiency of the receiver exit of 20%.