三结砷化镓太阳电池串联组件遮挡特性的研究  

Study on shading characteristics of triple-junction GaAs solar cell module in series

作　　者：董莉[1] 郄毅鹏[1] 姚元鑫 张肖君 DONG Li;QIE Yi-peng;YAO Yuan-xin;ZHANG Xiao-jun(Tianjin Institute of Power Sources,Tianjin 300384,China)

机构地区：[1]中国电子科技集团公司第十八研究所,天津300384

出　　处：《电源技术》2020年第8期1133-1136,共4页Chinese Journal of Power Sources

摘　　要：在复杂的空间环境中,航天器的太阳电池阵在光照期间可能会受到部分遮挡,影响其输出功率。针对空间三结砷化镓太阳电池串联组件的遮挡特性进行分析研究,特别是研究被遮挡电池及其旁路二极管的工作机理,可以进一步对其Ⅰ-Ⅴ曲线出现的"台阶"进行理论解释。结果表明,当太阳电池串联组件中的电池被部分遮挡后,被遮挡电池的旁路二极管开启,会有一部分电流流过二极管,随着负载电阻的增大,被遮挡电池的旁路二极管闭合,旁路二极管工作状态的改变,使得Ⅰ-Ⅴ曲线会出现"台阶",影响电池阵的在轨功率。In complex space environment,the solar cell array of spacecraft may be partially shaded during the illumination,which affects its output power.The shading characteristics of triple-junction GaAs solar cell module in series was analyzed and studied,especially the working mechanism of the shaded cell and its by-pass diode,which could theoretically explain the "steps" on the Ⅰ-Ⅴ curve.The results show that when the solar cell module is partially shaded,its by-pass diode opens,and part of current flows through it;with the load resistance increasing,the by-pass diode of the shaded cell closes.Due to the working state change of the by-pass diode,the "steps" appears on Ⅰ-Ⅴ curve,which affects the on-orbit power of the solar cell array.

关 键 词：太阳电池组件 Ⅰ-Ⅴ曲线测试 遮挡 

分 类 号：TM914[电气工程—电力电子与电力传动]