国外小天体探测器电源系统设计分析

Analysis on Power System Design of Probe for Small Celestial Body

介绍了日本隼鸟号(Hayabusa)、欧洲罗塞塔(Rosetta)、美国黎明号(Dawn)小天体探测器的电源系统设计概况,对电源系统拓扑、母线体制、太阳电池阵功率调节方式、锂离子蓄电池组配置等技术方案的特点进行归纳,总结了小天体探测器电源系统的最大功率点跟踪(MPPT)拓扑、电能自主运行和管理等关键技术,分析了3种不同拓扑结构的MPPT,以及电能自主管理应具备的能力。最后,提出了我国小天体探测器电源系统技术发展的建议,包括优化MPPT功率调节方式、重视电能自主运行和管理的研究,同时开展电源系统轻小型化设计工作。

The power system designs of the Japan's Hayabusa,the Europe's Rosetta and the Dawn of the United States are presented.The technology scheme characteristics are summarized,such as power system topology,bus architecture,regulation mode of solar array power,and Liion battery configuration.The key technologies of the probe power system for small celestial body are proposed,such as MPPT topology and power autonomy and management.In addition,three MPPT topological structures are analyzed,and the abilities possessed by power automatic management are put forward.At last,the development proposals of probe power system for small celestial body are given,including optimizing MPPT power regulation mode,paying attention to the research of power autonomy and management,and developing the miniaturization design of power system.