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Li F.,China Academy of Space Technology | Kang Q.,China Academy of Space Technology | Kang Q.,Joint Laboratory of Technology Innovation for Space Power Supply System | Xing J.,China Academy of Space Technology | And 3 more authors.
Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics | Year: 2016

Higher requirements are proposed to propulsion for space technology in new environment. As an advanced propulsion technology, electric propulsion has the virtue of high specific impulse, low launching mass and low cost. High voltage power supply is the key technology for high power and high efficiency design, since it is the main power supply for power processing unit (PPU). Application of novel power electronics technology will have a deep effect on geosynchronous orbit, geostationary earth orbit (GEO) telecommunication satellite and deep explanation. This paper focuses on PPU of 5 kW and introduces the current status and development of large power electric propulsion. The characteristics and prospects of large power and high efficiency PPU are analyzed in detail from three aspects of power electronic topology, components and control strategy. It supplies a reference for developing Chinese high voltage power supply of large power PPU. © 2016, Editorial Board of JBUAA. All right reserved.


Zhang Y.,China Academy of Space Technology | Zhang Y.,Joint Laboratory of Technology Innovation for Space Power Supply System | Wei Q.,China Academy of Space Technology | Xing J.,China Academy of Space Technology | And 7 more authors.
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2015

Based on the DFH-4 platform developed and the first successful launch of the XX satellite in geosynchronous orbit, the paper uses GaAs solar array output current data of the satellite as a statistical basis. Analyzing the incidence angle of the sun factor, the earth-sun distance factor, solar array drive assembly (SADA) and the temperature of the solar array factors, eliminates the impact of the above factors on the attenuation factor and get its fitting expression, the attenuation factor of 15-years life is Fn=0.9377. ©, 2015, Science Press. All right reserved.

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