提出一种深空探测器电源系统设计方案,采用高转换效率三结砷化镓太阳电池、半刚性基板轻量化技术及高比能锂离子蓄电池组;提出并采用一种基于顺序开关分流(S3 R)结构的扰动交错法最大功率点跟踪(MPPT)技术,提高了太阳能源利用率;提出并采用一种适应空间电源的机内测试技术(BIT),以提升电源自主管理能力.32%效率三结砷化镓太阳电池及其半刚性基板,已经通过鉴定试验验证.能量密度 1 9 5 W?h/kg 的钴酸锂离子蓄电池组及 MPPT 和 BIT 技术,已经应用到国内航天器正样产品;经过验证,MPPT追踪速度为毫秒级,追踪精度可达 9 8%.文章提出的设计可为深空探测器电源系统轻量化和电源能量自主管理需求提供解决途径.%A design scheme of power supply system for deep space probe is provided.It mainly in—volves the application of 3JGaAs solar cells with high conversion efficiency,and proposes a semi—rigid substrate lightweight technology,and a high power density lithium—ion battery is also devel—oped.An interleaved perturbation MPPT technique based on S3R is proposed to improve solar en—ergy efficiency,and a BIT (built in test technology)is adopted to improve the self—management of power supply.3JGaAs solar cells with 32% conversion efficiency and their semi—rigid substrate solar wings design have been verified in practical proj ect tests.1 95 W?h/kg energy density lithi—um—ion battery,MPPT and BIT have been applied to Chinese spacecraft products.The result shows that the tracking accuracy of MPPT can reach 98% with milliseconds.The design proposed in the paper provides a solution of power supply system lightweight technology and power energy self—management for deep space probe.
展开▼
