光伏组件切片技术是提升组件功率的一种有效方法,但结构的变化给研究复杂场景下光伏组件输出性能的建模带来一定的难度。该文提出一种阴影遮挡场景下三分片光伏组件性能模拟的方法,该方法以单太阳电池为基础,结合等效电路的串并联结构,对阴影遮挡场景下三分片组件的输出性能进行模拟,最后采用不同遮光实验来验证算法的准确性。通过模型计算功率与实测值对比,三分片组件5参数的最大误差为2.68%,最小误差为0.51%;三分片组件遮阴失配模型中最大功率点的最大功率误差为3.34%,最小误差为1.02%,证明该方法具有较高的精度。此外,该文还对三分片组件在不同遮挡场景下的输出性能进行对比研究,结果表明：三分片串并联的电路结构能使组件在局部阴影遮挡情况下获得更高的输出,三分片组件抗阴影遮挡性能更优。
Abstract
PV module slicing technology is an effective method to enhance the module power, but the variation of structure makes it difficult to study the modeling of PV module output performance under complex scenarios. A method to simulate the performance of three-slice PV modules under shadow shading scenarios is proposed. The method is based on a single cell and combines the series-parallel structure of the equivalent circuit to simulate the output performance of three-slice modules under shadow shading scenarios, and finally different shading experiments are used to verify the accuracy of the algorithm. By comparing the calculated power of the model with the measured value, the maximum error of the five parameters of the three sliced PV modules is 2.68% and the minimum error is 0.51%; the maximum error of the maximum power point power in the shading mismatch model of the three sliced module is 3.34% and the minimum error is 1.02%, which proves that the method has high accuracy. In addition, a comparative study on the output performance of the three-split module under different shading scenarios is conducted, and the results show that the circuit structure of three sliced series-parallel connection can enable the module to obtain higher output under local shading shading situation, and the three sliced PV module has better performance of shading resistance.
关键词
光伏组件 /
发电量仿真 /
失配损失 /
阴影遮挡 /
切片组件
Key words
PV modules /
power generation simulation /
mismatch /
shading /
sliced PV modules
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基金
国家重点研发计划（2022YFB4201000）;国家自然科学基金（51676063）
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