摘要
为同时兼顾千米量级尺度空间太阳能电站聚光系统的在轨发射安装难度、光学收集效率、稳定性及结构工艺等多方面的因素,提出采用基于球面正多面体的经纬线划分法模块化构建球形聚光器。该方法不仅可实现基础划分单元分布均匀、规格种类少,降低在轨构建与运载发射难度。而且只要合理控制弧高等分数和基础划分单元的口径就可以同时保证聚光系统的光学收集效率。理论与仿真结果显示,当弧高等分数为24时,该划分法共有25种基础单元件,整个球面被分成5762块。并且此时模块化构建的实际球形聚光器的光学收集效率与理想球面相比基本保持不变,解决了太阳能电站聚光系统设计中存在的关键问题。
How to mesh the large-scale spacesolar concentrator system,reduce its construction and launch difficulty on orbit and simultaneously guarantee the light collection efficiency have always been very complex and difficult problems in the current space solar concentrator systems.As for these problems,a mesh method based on the meridian and parallel of the spherical polyhedron is proposed to modularize the spherical concentrator.This approach offers a mesh with fewer evenly distributed basic dividing cells.Also,the aperture of the basic cell can be easily controlled by optimally selecting the dividing fraction of the circular arc height to guarantee the light collection efficiency at the same time.The theoretical and simulated results indicate that when selecting the dividing fraction of the circular arc height of 24,the types and total number of the dividing cells are 25 and 5765 respectively.In this case,the light collection efficiency remains the same before and after the spherical concentrator is meshed.These results show that the proposed mesh method has fundamentally solved the crucial issues in the space solar concentrator systems.
作者
李仙丽
王东旭
张逸群
段竹竹
LI Xian-li;WANG Dong-xu;ZHANG Yi-qun;DUAN Zhu-zhu(Key Laboratory of Electronic Equipment Structure Design of Ministry of Education,Xidian University,Xi'an 710071,China)
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2018年第4期450-456,共7页
Journal of Astronautics
基金
高等学校学科111创新引智计划(t B14042)
国家自然科学基金(51607131,51775404)
民用航天项目和中央高校基本科研业务费
关键词
空间太阳能电站
聚光系统
经纬线划分法
拓扑构型
Space solar power station
Spherical concentrator
Meridian and parallel of the spherical polyhedron based mesh method
Topology construction
作者简介
李仙丽(1985-),女,讲师,主要从事空间太阳能电站聚光系统的研究。通信地址:陕西省西安市太白南路2号(710071),电话:(029)88203040,E-mail:xlli@xidian.edu.cn
