新一代载人飞船试验船能源管理功能研制特点

Development Characteristics of Power Management Function in New-generation Manned Spacecraft

在系统架构研制中,针对新一代载人飞船试验船8000 km大椭圆轨道的任务特点,以及运行过程反复穿越辐射带的新环境特性,通过开展故障模式与影响分析和故障树分析工作,提出并采用了基于独立冗余的多机组主电源和多机组备份电源的高可靠高安全性能源系统总体技术方案,消除了分系统级单点故障环节,在发生一重甚至二重故障后,经过故障重构,仍然能够确保在全任务阶段安全、可靠地输出额定负载功率;在单机产品研制中,解决了在试验船大直径舱体凹舱壁内嵌安装和展开大型刚性太阳电池翼的研制难题,并部分使用了国内最高光电转换效率的太阳电池电路,成功完成首次在轨工程应用;在产品测试过程中,引入部分先进测试方法,通过使用远程测试技术,起到了简化流程、降本增效的作用。

Considering the mission characteristics of 8000 km large elliptical orbit and the new environment of repeatedly traversing the radiation belt for the test ship of the new generation of manned spacecraft,the Failure Mode and Effects Analysis(FMEA)and Fault Tree Analysis(FTA)were conducted in the system architecture design.The overall technical scheme of a highly reliable and safe power system based on the independent redundancy system with main power supply and backup power supply was proposed and adopted.The subsystem level single points of failure were eliminated.The safe and reliable rated output load power was ensured for the whole mission phase by fault reconstruction even in the event of double fault.In the development of the single product,the problem of installing and developing large rigid solar cell wing embedded in the concave bulkhead of the large diameter cabin of the test ship was solved,and the solar cell circuit with the highest photoelectric conversion efficiency in China was partly used,which was the first on-orbit engineering application.In the process of product testing,advanced testing methods such as remote testing technology were used to simplify the process,reduce the cost and increase the efficiency.