局部阴影下光伏组件建模及输出特性研究  

SIMULATION AND EXPERIMENTAL STUDY OF THE PHOTOVOLTAIC MODEL UNDER PARTIAL SHADING

作　　者：周笛青[1] 吴春华[1] 李智华[1] 付立[1] 王元章[1] 

机构地区：[1]上海大学自动化系,上海市电站自动化技术重点实验室,上海200072

出　　处：《太阳能学报》2014年第11期2098-2105,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51107079);上海大学"十一五"211建设项目

摘　　要：分析光伏组件的数学模型,针对遮挡情况的复杂性,提出一种可模拟大部分遮挡情况下光伏组件输出特性的方法,与传统建模方法相比,该模型可对光照强度、温度、遮挡面积等参数进行调节,能较为准确地反映不同光照、温度以及阴影条件下的光伏组件的输出特性,并分析不同旁路二极管结构的组件在遮挡情况下的功率损失问题。仿真和实验结果表明:在局部阴影条件下,非交错组件中6个旁路二极管的组件可最有效地输出功率,其研究结果可为光伏系统设计提供一定的参考。A mathematical model reflecting the output electrical characteristics of the partial shading PV module is put forward in this paper. Compared with the traditional model, it is able to show the variation of the output electrical characteristics of the PV module by adjusting the irradiance, temperature and the area of partial shading. The model is used to analyze the power losses of the partial shaded PV model with different number of bypass diodes. The simulation and experiments results show that PV model under partial shading with 6 bypass diodes is the best configuration to minimize the mismatch power loss. It has an important meaning for practical engineering application.

关 键 词：光伏组件 仿真建模 局部阴影 旁路二极管 输出特性 功率损失 

分 类 号：TK519[动力工程及工程热物理—热能工程]