JAXA Repository / AIREX 未来へ続く、宙(そら)への英知

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title宇宙用太陽電池アレイの高電圧化を目指したパネル表面の研究
Other TitleExperimental Study on Solar Array Panel for Prevention of High-voltage Discharge
Author(jpn)野地, 紘史; 斎藤, 智彦; 佐々木, 進; 田中, 孝治
Author(eng)Noji, Hirofumi; Saito, Tomohiko; Sasaki, Susumu; Tanaka, Koji
Author Affiliation(jpn)東京理科大学理学部応用物理学科; 東京理科大学理学部応用物理学科; 宇宙航空研究開発機構宇宙科学研究本部; 宇宙航空研究開発機構宇宙科学研究本部
Author Affiliation(eng)Tokyo University of Science, Department of Applied Physics, Faculty of Science; Tokyo University of Science, Department of Applied Physics, Faculty of Science; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS); Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)
Issue Date2010-02
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)
宇宙航空研究開発機構宇宙科学研究本部
Publication titleSpace Energy Symposium
宇宙エネルギーシンポジウム
Volume29
Publication date2010-02
Languagejpn
eng
AbstractIt is required to use a high voltage preferable more than 1000V in the design of power generation system for the Solar Power Satellite (SPS). But under this condition the electron collection through the inter-connector of the solar cells becomes large in the environment of space plasma, and the possibility of the electrical discharge on the panel increases. It is necessary to suppress the electrical discharge that may cause an electromagnetic interference, the surface deterioration, and the circuit destruction.When the solar array has a positive electric potential with respect to the plasma space potential, the secondary electrons emitted from the surface of the panel can contribute to the electrical discharge. Therefore, there is a possibility that the electrical discharge can be suppressed by selecting proper material for the array panel. If we can control the emission conditions of the secondary electron, we can restrain the unwanted discharge of the solar array.Moreover, the electron collection by the inter-connector closely depends on the sheath structure surrounding the panel. There is a possibility that the electrical discharge can be suppressed by controlling the electrical potential distribution which depends on the solar cell distribution and form the sheath structure on the solar array. We carried out the plasma current collection experiments utilizing two types of simulated solar array panels that were covered with low and high secondary electron emission coefficients. In case of the high secondary electron emission coefficient materials, increase of the plasma current was observed when over several hundred voltage was applied. On the other hand, in case of the low coefficient, increasing of the plasma current was not observed. Also we confirmed that alignment of the electrodes on the panel affected plasma current collections.In this paper we report experimental results on the electrical discharge control when the array has the positive electric potential from these above two aspects.
DescriptionOriginal contains color illustrations
Meeting Information: The twenty-ninth Space Energy Symposium (February 26, 2010, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara)
形態: カラー図版あり
会議情報: 第29回宇宙エネルギーシンポジウム(2010年2月26日, 宇宙航空研究開発機構宇宙科学研究本部相模原キャンパス)
形態: CD-ROM1枚
Note: One CD-ROM
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会
NCIDAN10324356
SHI-NOAA0064737013
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/20831


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