A Global Maximum Power Point Tracking Algorithm for Photovoltaic Systems Under Partially Shaded Conditions Using Modified Maximum Power Trapezium Method

被引：52
作者：
Xu, Shungang [1 ]
Gao, Yuan [1 ]
Zhou, Guohua [1 ]
Mao, Guihua [1 ]
机构：
[1] Southwest Jiaotong Univ, Sch Elect Engn, Chengdu 611756, Peoples R China
来源：
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2021年 / 68卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Global maximum power point tracking (GMPPT); modified maximum power trapezium (M-MPT); partially shaded conditions (PSCs); photovoltaic (PV) systems; PARTIAL SHADING CONDITIONS; PV SYSTEMS; ARRAY; MPPT; COMPENSATION; CONTROLLER; SCHEME;
D O I：
10.1109/TIE.2020.2965498
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this article, a modified maximum power trapezium (MPT) method for global maximum power point tracking of photovoltaic (PV) systems under partially shaded conditions (PSCs) is proposed. Compared with the traditional MPT method, the proposed method introduces a variable current range lower bound by utilizing the monotonic output characteristics of the PV array. Moreover, considering the influence of the initial operating point of the PV array on the scanning path under dynamic PSCs, a judgment mechanism for the initial voltage is added in the modified method. The proposed method guarantees that the global maximum power point is tracked accurately with a smaller voltage scanning range and shorter tracking time under all conditions. Furthermore, the excellent performance of the proposed method has been verified by both simulation and experimental results.
引用
收藏
页码：370 / 380
页数：11
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