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Development of the verification model on the sandwich type of the Solar Power Satellite

三明治式太阳能卫星验证模型研制

基本信息

批准号：
14350512
负责人：
KAYA Nobuyuki
金额：
$ 10.24万
依托单位：
Kobe University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14350512/
关键词：
Solar Power Satellite Sandwich module Inverse F class amplification Rectenna Inflatable structure F class amplification Microwave Power Transmission Solar Power Generation 実証モデル

项目摘要

We have proposed the Solar Power Satellite (SPS) of the sandwich concept, which consists of a power generator/transmitter of the sandwich structure and large reflectors. The major benefit of the sandwich concept is that heavy long power transmission lines and a rotary joint are reduced, because the solar cells are directly and shortly connected to high power amplifiers. And the large reflectors have an inflatable structure and are very light. Thus, the cost for launch and production can be reduced very much and the sandwich SPS concept looks very reasonable enough to realized. We have developed and fabricated the total working model of the sandwich SPS, which was displayed at World Space Congress in Houston.1.Inflatable reflectorThe Inflatable reflectors have an advantage of a light and compact structure enough to realize the practical SPS. The reflectors in this SPS model are constructed with inflatable tubes, made from the CFRP of triaxial woven fabric composite, and thin film coated with aluminum. The reflectors can effectively concentrate the sunlight on the solar cells of the sandwich module.2.Power generator/transmitterThe sandwich module consists of 25 solar cells and 16 transmitter modules. A F-class or inverse F-class amplifier, a phase shifter, the circuit to detect phases of pilot signal, and 4 slot antennas are mounted on a transmitter module. The F-class and inverse F-class amplifiers can effectively convert electric DC power generated by photovoltics into microwave power at a high efficiency of 50%.3.RectennaWe have newly developed the bar-type and coaxial rectennas, which are composed only of metal and diode. They consist of a dipole antenna, an input filter, a diode for rectification, an output filter. These rectennas are very simple, cheap and tough. The RF-DC efficiency of arrayed rectennas is measured over 70%.

我们提出了三明治概念的太阳能卫星（SPS），它由三明治结构的发电机/发射机和大型反射镜组成。三明治概念的主要优点是减少了沉重的长电力传输线和旋转接头，因为太阳能电池直接且短距离地连接到高功率放大器。而且大型反光罩采用充气结构，非常轻。因此，发射和生产的成本可以大大降低，并且三明治SPS概念看起来非常合理，足以实现。我们开发并制作了三明治SPS的整体工作模型，并在休斯敦世界航天大会上展出。 1.充气式反射器充气式反射器具有结构轻、结构紧凑的优点，足以实现实用的SPS。该 SPS 模型中的反射器由充气管构成，充气管由三轴编织织物复合材料 CFRP 制成，并涂有铝薄膜。反射器可以有效地将阳光集中到夹层组件的太阳能电池上。2.发电机/发射器夹层组件由25个太阳能电池和16个发射器模块组成。发射机模块上安装有F级或反F级放大器、移相器、检测导频信号相位的电路以及4个缝隙天线。 F级和反F级放大器可以有效地将光伏产生的直流电转换为微波功率，效率高达50%。3.整流天线我们新开发了条形和同轴整流天线，仅由金属和二极管组成。它们由偶极天线、输入滤波器、整流二极管和输出滤波器组成。这些整流天线非常简单、便宜且坚固。经测量，阵列整流天线的 RF-DC 效率超过 70%。