PV Array Reconfiguration Based on the Shaded Cells'Number for PV Modules
作者机构：College of Information EngineeringZhejiang University of TechnologyHangzhou 310014China
出 版 物：《CSEE Journal of Power and Energy Systems》 (中国电机工程学会电力与能源系统学报（英文）)
年 卷 期：2023年第9卷第2期
页 面：733-742页
核心收录：
学科分类：0710[理学-生物学] 080801[工学-电机与电器] 0808[工学-电气工程] 080802[工学-电力系统及其自动化] 08[工学]
基 金：supported by the Key Research and Development Program of Zhejiang Province[grant number 2019C01149].
主 题：Maximum power point(MPP) partial shadow PV array PV module reconfiguration
摘 要：Reconfiguration can increase the output power for a PV array under partial shadows.However,traditional reconfiguration methods consider the PV module as either totally shaded or totally unshaded,and module-based simulation is employed to evaluate the reconfiguration effect.Actually,there is an unneglectable error when treating a partially shaded PV module as totally shaded,through using a more accurate cellbased simulation.Based on the analysis of the determinant factors on MPPs’power of a PV array,a new reconfiguration method is proposed based on the exact partial shadow shape projected on the PV array.This method restructures the electrical connection among PV modules of a PV array according to the shaded cells’number(SCN)of every PV module.Extensive cell-based simulations are carried out on a PV array to verify the effectiveness of the proposed SCN-based reconfiguration method.Comprehensive comparisons among various reconfiguration methods and shadow distributions clearly show its suitability to different irregular shadows and its superiority in PV output power enhancement.
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