中文摘要：

现有的阴影条件下的光伏阵列机理模型多为分段函数形式,较为复杂。提出采用傅里叶函数并使用曲线拟合的方法对阴影条件下光伏阵列进行非机理建模。改进了局部阴影条件下的光伏阵列的机理模型,获取光伏阵列的输出数据并进行线性插值。选取不同阶数的傅里叶函数对单阴影和多阴影条件下的光伏阵列的输出进行曲线拟合。该非机理模型具有统一的数学表达式,不需要分段描述,能对不同功率等级、不同精度要求的光伏阵列进行建模,简化了模型。

英文摘要：

Most existing mechanism models ofphotovoltaic （PV） array under the shade are expressed by piecewise function and such a form is a bit of complexity, so it is proposed that to utilize the Fourier function and curve fitting for non-mechanism modeling of PV array under partial shade, thus the mechanism model of PV array under partial shade is improved to obtain the output data of PV array and perform linear interpolation. Fourier functions with different orders are chosen to fit the output curves of PV array under single shade and multi-shades. The proposed non-mechanism model possesses unified mathematical expression, therefore the piecewise description is no more needed, the proposed method can be used for the modeling of PV arrays, which belong to different power levels and different accuracy requirements, and using it the modeling of PV array under partial shade can be simplified.