摘要
由于局部阴影的影响,使光伏阵列出现失配现象而导致输出效率大幅降低,为此该文对不同结构的光伏阵列在多种阴影情况下的输出特性进行对比研究,研究表明网状(TCT)结构均优于其他结构,尤其是当出现离散局部阴影时。在此基础上,提出一种阴影离散化方法,并将其应用于TCT结构。仿真结果证明:阴影离散化方法能使光伏阵列最大输出功率增加约20%,可有效提高光伏系统的发电效率。与模块式和重构式光伏发电系统相比,上述方法更易于实现,且成本较低。
Due to the impact of partial shading,the mismatch phenomenon of photovoltaic array will appear,and the output efficiency greatly reduced.In view of the above questions,this paper made a comparative study on the output characteristics of photovoltaic arrays with different structures under different shading conditions.The results show that TCT structure is superior to other structures,especially under discrete partial shading conditions.On this basis,a method of shadow discretization was proposed and applied to the TCT structure.The simulation results show that the method can increase the maximum output power of PV array by about 20%.Compared with the modular and reconfigurable photovoltaic power generation system,the method is more easy to implement and lower cost.
作者
卢泉
韦雪菲
张玉
邓海华
Lu Quan;Wei Xuefei;Zhang Yu;Deng Haihua(College of Electrical Engineering,Guangxi University,Nanning 530004,China;Guangxi Key Laboratory of New Energy and Building Energy Saving,Guilin University of Technology,Guilin 541006,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2019年第4期1003-1010,共8页
Acta Energiae Solaris Sinica
基金
国家自然基金(NSFC51567002)
广西自然科学基金(2014GXNSFBA118266)
广西科技攻关项目(桂科攻1598008-3)
关键词
光伏阵列
局部阴影
网状结构
离散化
photovoltaic array
partial shading
total-cross-tied(TCT)
discretization method
