文献类型：期刊文献

英文题名：Submodule-Based Modeling and Simulation of a Series-Parallel Photovoltaic Array Under Mismatch Conditions

作者：Qing, Xiangyun[1];Sun, Hao[1];Feng, Xiangsai[2];Chung, C. Y.[3]

机构：[1]East China Univ Sci & Technol, Dept Automat, Shanghai 200237, Peoples R China;[2]Shanghai Solar Energy Res Ctr, Shanghai 201100, Peoples R China;[3]Univ Saskatchewan, Dept Elect & Comp Engn, Saskatoon, SK S7N 5A9, Canada

年份：2017

卷号：7

期号：6

起止页码：1731

外文期刊名：IEEE JOURNAL OF PHOTOVOLTAICS

收录：;EI(收录号：20173704162277);WOS:【SCI-EXPANDED(收录号:WOS:000413934100036)】；

基金：This work was supported in part by the Chinese Scholarship Council, in part by the Natural Sciences and Engineering Research Council of Canada, and in part by the Saskatchewan Power Corporation.

语种：英文

外文关键词：Bisection method; mismatch; modeling; partial shading; photovoltaic (PV) array; submodule

摘要：This paper presents a simple and theoretically sound submodule-based model to simulate the characteristics of a photovoltaic (PV) array with a series-parallel configuration. The proposed model can describe the behavior of bypass diodes as well as the full PV array characteristics under varying irradiance and temperature conditions. Rather than using the nonlinear system of equations solved with a Jacobian matrix, separate equations are employed to model the submodule-based PV array and solved by an easy-to-implement bisection search method. Consequently, the output current of the PV array can be readily determined when its output voltage, the irradiance levels, and temperature values of all submodules are given. The robustness and calculation efficiency of the proposed computational method are analyzed. Some test examples allow us to exhibit the acceptable accuracy of the proposed model. Special attention of this work is paid to the simulation approach to evaluate the electrical mismatch losses in large-scale PV arrays with nonuniform aging after several years of field operation and exposure.