日照强度和内部电阻对太阳能电池光伏性能的影响  

Effect of Illumination Intensity and Internal Resistance on Photovoltaic Performance of Solar Cells

作　　者：钟志有[1] 汪浩[1] 顾锦华[2] 

机构地区：[1]中南民族大学电子信息工程学院,武汉430074 [2]中南民族大学计算与实验中心,武汉430074

出　　处：《中南民族大学学报（自然科学版）》2012年第1期61-65,79,共6页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：湖北省自然科学基金资助项目(2011CDB418);中南民族大学学术团队基金资助项目(XTZ09003);中央高校基本科研业务费专项资金资助项目(CZZ11001)

摘　　要：在分析太阳能电池等效直流电路的基础上,利用电流-电压特性的函数关系式,建立了太阳能电池的仿真模型,研究了日照强度和内部电阻对电池伏安特性和光伏性能(如短路电流、开路电压、填充因子、输出功率和光电转换效率)的影响.研究结果表明:日照强度和内部串联电阻不仅明显影响了太阳能电池的伏安特性、短路电流和开路电压,而且也明显影响了太阳能电池的输出功率、填充因子和光电转换效率,同时太阳能电池的输出特性具有明显的非线性特征,并且存在一个最大的输出功率点和一个最佳的负载电阻值.Based on the analysis of the direct-current equivalent circuit of solar cells,the simulation model of solar cells is established by means of the mathematical function formula of current-voltage under Matlab environment.The effects of solar illumination intensity and internal resistance on the current-voltage characteristics and photovoltaic performance such as short-circuit current,open-circuit voltage,fill factor,output power and energy conversion efficiency were studied.The results demonstrate that the current-voltage characteristics and photovoltaic performance of solar cells are subjected to the illumination intensity and internal series resistance.For the output power curves of solar cells,each curve is nonlinear and possesses a maximum power point and an optimal load resistance.

关 键 词：太阳能电池 光照强度 内部电阻 光伏性能 

分 类 号：TM914[电气工程—电力电子与电力传动]