A novel backtracking approach for two-axis solar PV tracking plants

被引：27

作者：

Fernandez-Ahumada, L. M. ^{[1
]}

Ramirez-Faz, J. ^{[2
]}

Lopez-Luque, R. ^{[3
]}

Varo-Martinez, M. ^{[3
]}

Moreno-Garcia, I. M. ^{[4
]}

Casares de la Torre, F. ^{[2
]}

机构：

[1] Univ Cordoba, Comp & Numer Anal, Campus Rabanales, E-14071 Cordoba, Spain

[2] Univ Cordoba, Elect Engn, Campus Rabanales, E-14071 Cordoba, Spain

[3] Univ Cordoba, Appl Phys, Campus Rabanales, E-14071 Cordoba, Spain

[4] Univ Cordoba, Elect & Comp Engn, Campus Rabanales, E-14071 Cordoba, Spain

来源：

RENEWABLE ENERGY | 2020年 / 145卷

关键词：

PV solar plants; Two-axis solar tracker; Power losses by shading in PV plants; Backtracking; PHOTOVOLTAIC SYSTEMS; ENERGY; RADIATION; FIELD; SUN; ALGORITHM; TRACKERS; GEOMETRY; DESIGN; OUTPUT;

D O I：

10.1016/j.renene.2019.06.062

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Solar tracking is a technique required to increase energy production in multiple photovoltaic (PV) facilities. In these plants, during low-elevation solar angle hours, shadows appear between the collectors causing a dramatic decrease in production. This paper presents a novel optimal tracking strategy to prevent the creation of these shadows. The presented method determines whether or not there is shading between collectors. Thus, when the collectors are not shaded, a tracking trajectory for maximum irradiance on the collectors is suggested. However, when the collectors are shaded, backtracking is proposed. Therefore, energy production in plants with this novel tracking method can be 1.31% higher than that in PV installations with astronomical tracking. Moreover, this method allows the study of PV facilities for which there have been no published approaches, such as plants with non-rectangular collectors or those located on topographically heterogeneous surfaces. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：1214 / 1221

页数：8

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