FY-2C星电源分系统及其在轨性能

介绍了风云二号(FY-2)C气象卫星电源分系统的组成、技术指标和工作原理,以及太阳电池阵、Cd-Ni蓄电池组和电源控制设备等主要部件的设计和改进.遥测数据分析结果显示,C星太阳电池阵功率裕度优于设计要求,采用BSFR太阳电池对方阵工作温度影响不明显,地影轨道72 min地影蓄电池最大放电深度减小,涓流态第三极电性能信号与A,B星-致.在轨运行结果表明,C星电源分系统各部件状态良好,能满足任务要求.国内首次用于地球静止轨道空间电源工程的BSFR太阳电池方阵性能稳定,蓄电池组容量增大,简化了地影期卫星地面管理,改善卫星地影期环境工作温度;解决了A,B星进出影电源分系统自主转电时全调节母线电压的负冲.

Power Source Subsystem of FY-2C Meteorological Satellite and Its On-Orbit Performance

The composition,performance and principle of the power subsystem for FY-2C meteorological satellite were introduced in this paper.The design and improvement for the major parts of the power subsystem such as solar cell array,power control unit and batteries were also presented.The analysis of telemetry data showed that the power margin of FY-2C satellite was better than the requirement, the BSFR solar cell array adopted had little effect on the operation temperature for the array,the maximum discharge depth of the batteries in 72 min eclipse was decreased,and the performance signal of the third pole in trickling for C satellite was agreed with that of A and B satellite.The on-orbit operation illustrated that the major parts of the power subsystem for C satellite were operated in good condition,which could satisfy the mission requirement.The performance of the BSFR array that was first time used in geostationary orbit was stable.The capacity of the batteries was enlarged.The ground management for satellite was simplified and the operation environment temperature was improved in eclipse.The negative pulse in bus voltage for A and B satellite was solved in C satellite.