A novel scan pattern for reconfiguration of partially shaded photovoltaic arrays for maximum power extraction,International Journal of Circuit Theory and Applications

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A novel scan pattern for reconfiguration of partially shaded photovoltaic arrays for maximum power extraction
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2022-09-26 , DOI: 10.1002/cta.3452
Rayappa David Amar Raj ₁ , Kanasottu Anil Naik ₁

Affiliation

Reconfiguration plays an indispensable role in augmenting the output of the photovoltaic (PV) array under partial shading conditions. Various reconfiguration schemes have been proposed in the literature to disperse the shade in partially shaded PV arrays. Nevertheless, most of these schemes can be employed only for less-rated arrays, are not compatible with all array sizes, fails in effective shade dispersion over the entire array, and so forth. To overcome these shortcomings, a calligraphy-based diagonal scan pattern is proposed to reconfigure the PV array to improve the row currents of the PV array thereby reducing the mismatch between them. The superiority of the proposed scheme is examined by comparing it with conventional Series-Parallel, Total-Cross-Tied, and the existing image processing based-Chaotic Baker Map, Odd-Even, and Odd-Even-Prime configurations. Besides, the system is extensively studied for various symmetrical 9 × 9, 8 × 8, 4 × 4, and unsymmetrical 8 × 6 PV arrays under 34 distinct shading cases with various performance indices. An experimental laboratory prototype model of a 4 × 4 PV array reconfiguration system is developed and studied under distinct shading conditions. Subsequently, an inclusive economic analysis is also conducted, and it is noted that there is a notable enhancement in electricity units and revenue generation by executing the proposed reconfiguration scheme.

中文翻译：

一种用于重构部分遮蔽光伏阵列以实现最大功率提取的新型扫描模式

在部分遮荫条件下，重新配置在增加光伏 (PV) 阵列的输出方面起着不可或缺的作用。文献中提出了各种重新配置方案，以分散部分遮蔽的光伏阵列中的阴影。然而，这些方案中的大多数只能用于额定值较低的阵列，不能与所有阵列尺寸兼容，不能在整个阵列上有效地分散阴影，等等。为了克服这些缺点，提出了一种基于书法的对角线扫描模式来重新配置光伏阵列，以提高光伏阵列的行电流，从而减少它们之间的不匹配。通过将其与传统的串并联、全交叉捆绑和现有的基于图像处理的 Chaotic Baker Map、Odd-Even、和奇偶素数配置。此外，该系统还针对各种对称 9×9、8×8、4×4 和非对称 8×6 光伏阵列在 34 种具有各种性能指标的不同遮阳情况下进行了广泛研究。在不同的阴影条件下开发和研究了 4 × 4 光伏阵列重构系统的实验实验室原型模型。随后，还进行了包容性经济分析，注意到通过执行拟议的重组计划，电力单位和创收显着增强。在不同的阴影条件下开发和研究了 4 × 4 光伏阵列重构系统的实验实验室原型模型。随后，还进行了包容性经济分析，注意到通过执行拟议的重组计划，电力单位和创收显着增强。在不同的阴影条件下开发和研究了 4 × 4 光伏阵列重构系统的实验实验室原型模型。随后，还进行了包容性经济分析，注意到通过执行拟议的重组计划，电力单位和创收显着增强。

更新日期：2022-09-26

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