串联电阻对不均匀铜铟镓硒电池性能的影响  

EFFECTS OF THE SERIES RESISTANCE ON THE PERFORMANCE OF INHOMOGENEOUS Cu(In,Ga)Se_2 SOLAR CELLS

作　　者：欧阳良琦 庄大明[1] 郭力[1] 曹明杰[1] 刘江[1] 李晓龙[1] 谢敏[1] 宋军[1] 

机构地区：[1]清华大学材料学院,先进成形制造教育部重点实验室,北京100084

出　　处：《太阳能学报》2015年第7期1561-1566,共6页Acta Energiae Solaris Sinica

摘　　要：由于铜铟镓硒太阳电池的不均匀性以及电池输出特性的非线性,现有表征大面积电池的加权平均效率需要进行修正以便更好反映光伏组件的效率。由于串联电阻的增加常被认为可改善电池均匀性,因此本文针对串联电阻的影响进行重点研究。本文基于太阳电池模型,假定大面积太阳电池可看作是多个小面积太阳电池单元并联而成的太阳电池单元组件。计算结果表明,并联光伏组件的效率比加权平均效率低;提高光伏组件的串联电阻能在一定程度上改善电池不均匀性,但未必能提高光电转换效率,这有赖于光伏组件的不均匀程度和其本身的串联电阻大小;当光伏组件本身的均匀性较好且串联电阻也较小时,提高光伏组件的串联电阻能提高光伏组件效率。Due to the non-uniformity and the nonlinear output characteristic of Cu（In, Ga）Se2 solar cells, the weighted averaged efficiency of different parts obtained from the whole large scale cell used to represent its total efficiency needs to be amended. The increase of the series resistance is usually considered to be able to improve the uniformity of solar cells, therefore, the effects of the series resistance are focused on. Based on the model of the solar cell, a large scale solar cell is regarded as a module comprised of several small scale solar ceils in parallel. The computational results showed that the actual efficiency of the large scale solar cell is lower than the weighted averaged one. The increase of the series resistance can improve the uniformity of the module, but it cannot necessarily enhance the conversion efficiency. Only when the uniformity is good and the series resistance is small, can the increase of the series resistance enhance the conversion efficiency.

关 键 词：铜铟镓硒 太阳电池 不均匀性 串联电阻 效率 

分 类 号：TM615[电气工程—电力系统及自动化]