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    • Overview of Activities for Space Solar Power Systems in USEF

    Paper number

    IAC-05-C3.1.02

    Author

    Mr. Shoichiro Mihara, Institute for Unmanned Space Experiment Free Flyer (USEF), Japan

    Year

    2005

    Abstract
    Institute for Unmanned Space Experiment Free Flyer (USEF) has been studying wireless power transmission under the contract of Ministry of Economy, Trade and Industry (METI) from FY2004 to FY2005. In the study, we have focused on the microwave power transmission on the ground as a key technology for the realization of future space solar power system. Results of this study together with our past activities such as SSPS system study will be presented in the paper.
1) USEF has been studying SSPS system for more than a decade. The result of these studies have been explained and presented in the past presentation. The latest system candidate is the sandwich panel having solar cells on one side and phased array antenna on the other side. The study has been done for its dynamic stability, construction method on orbit, operation, economical aspect and development scenario. 
2) In FY 2002 and 2003, prototype active phased array panel with software retro-directive beam steering antenna and hardware retro-directive antenna has been manufactured and evaluated. In FY2004, combination test with these two active phased array systems of different beam steering systems was performed. The test was performed to demonstrate basic phase synthetic characteristics and beam steering scheme. The test results indicate appropriate result for the basis of the future hybrid beam steering system. 
3) Investigation of microwave power system for the ground application was also performed. Three types of the system have been proposed and will be explained in this paper.
4) Environmental and safety assessment of microwave power transmission is also the theme of current investigation. The assessment has been performed for acquisition of public acceptance for the future microwave power transmission system. 
5) We are planning to step forward to the development of the future wireless microwave power transmission. The basic plan for the development will be shown in this paper.
    Abstract document

    IAC-05-C3.1.02.pdf

    Manuscript document

    IAC-05-C3.1.02.pdf (🔒 authorized access only).

    To get the manuscript, please contact IAF Secretariat.