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Power Generation on a Bare Electrodynamic Tether during Debris Mitigation in Space
International Journal of Aerospace Engineering ( IF 1.1 ) Pub Date : 2021-02-23 , DOI: 10.1155/2021/8834196
Kan Xie 1 , Fuwen Liang 1 , Qimeng Xia 1 , Ningfei Wang 1 , Zun Zhang 2 , Haoxiang Yuan 1 , Xiangyang Liu 1 , Zhiwen Wu 1
Affiliation  

Power generation can be realized in space when current is induced on a bare electrodynamic tether system. The performance of power generation is discussed based on a debris mitigation mission by numerical simulation in the paper. A Li-ion battery subsystem is used to complete the energy conversion—harvest and supply the energy. The battery can provide 10–300 W average electric power continuously during several hundred hour mission time. The energy conversion efficiency ranges from 1% to a maximum value 30%. With constant power consumption on board, the battery operation generally experiences a discharging phase, a charging phase, and a stable phase. The first two phases determine the mission risk coefficient. The heating problem in the stable phase cannot be ignored. The optimization of battery design and tether design should be considered for each debris mitigation mission. An extra control circuit or small battery voltage with large capacity for battery design is suggested to eliminate the stable phase. Wide or long tether designs are more appropriate for mission with high or low power demands on board, respectively. The power generation is affected by the system mass and the mission orbit parameters.

中文翻译:

减少空间碎片过程中裸电动动力系链上的发电

当在裸露的电动系链系统上感应电流时,可以在太空中实现发电。通过数值模拟,基于减碎片任务,讨论了发电性能。锂离子电池子系统用于完成能量转换-收获并提供能量。在数百小时的任务时间内,电池可以连续提供10–300 W的平均电能。能量转换效率的范围从1%到最大值30%。在船上具有恒定功耗的情况下,电池操作通常会经历放电阶段,充电阶段和稳定阶段。前两个阶段确定任务风险系数。稳定阶段的发热问题不容忽视。对于每个碎片缓解任务,应考虑优化电池设计和系链设计。建议使用额外的控制电路或电池容量小的电池电压来消除稳定相位。宽或长的系绳设计分别更适合于船上具有高功率或低功率要求的任务。发电量受系统质量和任务轨道参数的影响。
更新日期:2021-02-23
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