基于多峰峰值功率跟踪的月球车一次电源  

Design of primary electrical power subsystem of lunar rover based on global MPPT

作　　者：薛蕾[1] 赵建辉[1] 李帆[1] 郝博[1] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191

出　　处：《电源技术》2015年第10期2184-2188,共5页Chinese Journal of Power Sources

摘　　要：由于月球上月尘、遮挡等造成太阳电池阵输出功率呈现多峰特性,此时传统的峰值功率跟踪(maximum power point tracking,MPPT)失效。为提高功率利用率,需要跟踪全局最大功率。且月球车处于极度低温环境,需要放射性同位素温差发电器(radioisotope thermoelectric generator,RTG)为月球车提供电能和热能。综上,月球车一次电源系统由太阳电池阵-蓄电池组-放射性同位素温差发电器联合供电。仿真结果表明,太阳电池阵按照需要输出峰值功率,蓄电池组通过恒流恒压(CC-CV)充电,母线电压始终维持在42 V左右,各项功率、电流、电压输出都符合月球车供电要求。The multi-peak characteristics of output power of solar array were cause of lunar dust and shading on moon. To improve power utilization, it was necessary to track the global maximum power point. Besides, the lunar rover worked in the extremely low temperature environment, and the Radioisotope Thermoelectric Generator（RTG）provided electricity and heat for the lunar rover. In summary, the lunar rover power system consisted of solar arrays,battery pack and RTG, which supplied power together. The simulation results show that the solar array can output power in accordance with need, the battery pack charges through constant current-constant voltage（CC-CV） and bus voltage are always maintained at about 42 V. The power, current and voltage were in line with power supply requirements of lunar rover.

关 键 词：多峰峰值功率跟踪 联合供电 智能化控制 一次电源 月球车 

分 类 号：TM911[电气工程—电力电子与电力传动]