solar array, ultrahigh vacuum, aerospace environment, electromagnetic interaction, spacecraft charging, solar energy conversion, microwave transmission, microwave generator, multipactor discharge, electric field strength
その他のタイトル（英）
Preliminary study on interaction between high intensity microwave and solar array surfaces in vacuum
Kyushu Institute of Technology Department of Electrical Engineering, Faculty of Engineering
Kyushu Institute of Technology Department of Electrical Engineering, Faculty of Engineering
Kyushu Institute of Technology Department of Electrical Engineering, Faculty of Engineering
Kyushu Institute of Technology Department of Electrical Engineering, Faculty of Engineering
Japan Aerospace Exploration Agency
出版者
宇宙航空研究開発機構宇宙科学研究本部
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
雑誌名
第25回宇宙エネルギーシンポジウム 平成17年度
雑誌名(英)
The Twenty-fifth Space Energy Symposium March 10, 2006
ページ
31 - 35
発行年
2006-06
抄録（英）
Space Solar Power System (SSPS) transfers enormous amount of electrical energy of microwave. As the microwave may diffract to solar array surface, there is concern of multifactor discharge caused by the microwave. There has been no experiment on interaction between high intensity microwave and solar array. The verification experiment is essential for Space Solar Power System to become a reality. We examined the interaction between solar array surface and microwave in a vacuum chamber. We investigated a discharge phenomenon on the solar array surface that receives RF irradiation with 400 W maximum power and 5.8 GHz frequency generated by a magnetron. We observed discharge on solar array depending on the microwave strength and vacuum condition. The discharge occurred mostly at N-electrodes of solar cells that acted as an antenna as good as a dipole antenna. We calculated the distribution of electric field inside the chamber by Finite Difference Time Domain (FDTD) method. The result of numerical simulation shows that macroscopic electric field is not high enough to cause multifactor discharges. Future works involve more precise estimation of local electric field and gas pressure near the N-electrodes of solar cells.
真空環境下での高強度マイクロ波と宇宙機太陽電池アレイ表面の干渉相互作用に関する基礎的検討
