太阳电池测试系统及其参数匹配优化研究

Study on solar cell testing system and its parameter matching optimization

为了获得太阳电池的I-V特性曲线及特性参数，利用Visual C＋＋语言开发出基于Windows平台的太阳电池测试软件系统，并对基于补偿原理的I-V测试电路参数匹配进行了详细分析。电路中串联电阻及桥式直流电源对电池的暗特性影响变化不大，但可使光特性I-V曲线发生显著变化。通过参数匹配的调整与优化，测量数据与电池的标准数据基本吻合，其误差仅为1％～2％，表明该测试软件系统满足实际使用要求，为电池性能分析提供了准确的依据。

In order to get I-V characteristic curves and characteristic parameters of solar cells, the software system for solar cell testing is developed using Visual C＋ ＋ based on Windows operator system. The parameters matching in compensative I-V testing circuit is analyzed in details. Analysis results show that series resistance and bridge DC power in the measurement circuit can slightly affect the dark I-V curve, however, they modify the light I-V curve significantly. The measurement data are basically agree with the standard data of solar cells by adjusting and optimizing the matching parameters and this error is only between 1% and 2 %. The results show that this software system can meet the practical needs and also can provide accurate basis for the analysis of solar cells performances.