摘要
为了得到太阳能电池板的最佳工作效率,需要求出单体太阳能电池各参数的数值。通过理论分析和仿真研究发现,串联电阻Rs有使太阳能电池的I-U特性曲线左移的特性;并联电阻Rsh有使太阳能电池的I-U特性曲线下移的特性。在此特性的基础上,根据太阳能电池的电流方程,提出了一种估算串联电阻Rs、并联电阻Rsh的新方法。在相同温度条件下,通过测量不同光照条件下的开路电压和短路电流的实验值,经过曲线拟合发现二极管品质因子n不受光照强度的影响,可以认为是常数。该算法能够较方便地得到太阳能电池的四个重要参数Io,n,Rs,Rsh的值。实验及分析结果表明,理论估算结果与实验结果误差在1.8%以下,满足工程应用的精度要求。
To obtain an optimum efficiency of a solar panel, it is necessary to calculate the parameters of the solar cells. The theoretical analysis and simulation study find that the series resistance makes the I-U characteristics curve move left while the shunt resistance makes it move down. Based on this feature, according to the current equation, we introduce a new method to estimate the series and shunt resistance. In the same temperature and different light conditions, we measure the experimental values of the open-circuit voltage and the short-circuit current, and through the curve-fitting we find that the diode ideality factor n can be thought as a constant. The presented method can get the solar cells parameters easily. The experiment and analysis results show that the error between estimation results and experiment results is less than 1.8%, meeting the engineering application accuracy.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2012年第9期133-136,共4页
Power System Protection and Control
基金
河南省重点科技攻关项目(102102310041)
关键词
太阳能电池
串联电阻
并联电阻
二极管品质因子
反向饱和电流
solar cells
series resistance
shunt resistance
diode ideality factor
reverse saturation current
