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CSEE Journal of Power and Energy Systems 2022, 8(5): 1408-1416 https://doi.org/10.17775/CSEEJPES.2020.06930
Open Access | Issue | Published: 06 May 2022

Reconfiguration of PV Arrays (T-C-T, B-L, H-C) Considering Wiring Resistance

Show Author's Information Kandipati Rajani,  Tejavathu Ramesh ( )
Electrical and Electronics Engineering Department, National Institute of Technology Andhra Pradesh, West Godavari-534101, India
Keywords:
efficiency, reconfiguration, fill factor, Bridge-link, global maximum power, honey-comb, photovoltaic array, Sudoku, Total-Cross-Tied
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Rajani K, Ramesh T. Reconfiguration of PV Arrays (T-C-T, B-L, H-C) Considering Wiring Resistance. CSEE Journal of Power and Energy Systems, 2022, 8(5): 1408-1416. https://doi.org/10.17775/CSEEJPES.2020.06930
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Abstract Full text About this article

Partial shadings on the photovoltaic (PV) array causes reduction in maximum power generation. Reconfiguration of PV arrays plays an important role in increasing the maximum power generation from PV array configurations under partial shadings. In general, partial shadings on the PV arrays are concentrated on a group of modules. Therefore, the distribution of shading over the array increases the maximum power generation. This paper uses a modified Sudoku pattern to increase the maximum power generation from the PV array configurations. The PV array configurations are analyzed by considering column wiring resistance and cross ties resistance. The modified Sudoku pattern is applied to Total-Cross-Tied (T-C-T), Bridge-Link (B-L) and Honey-Comb (H-C) configurations and their performances are analyzed under various shading patterns, such as short narrow, short wide, long narrow, long wide, middle and diagonal. The specifications, such as Global Maximum Power (GMP), Mismatch losses, Fill Factor, Efficiency are considered to see the efficacy of various PV array configurations and their reconfigurations. From the results, it can be concluded that reconfigured T-C-T PV array generates the highest GMP compared to other configurations under considered shading patterns.


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About this article

Reconfiguration of PV Arrays (T-C-T, B-L, H-C) Considering Wiring Resistance

Show Author's information Kandipati Rajani, Tejavathu Ramesh ( )
Electrical and Electronics Engineering Department, National Institute of Technology Andhra Pradesh, West Godavari-534101, India

Abstract

Partial shadings on the photovoltaic (PV) array causes reduction in maximum power generation. Reconfiguration of PV arrays plays an important role in increasing the maximum power generation from PV array configurations under partial shadings. In general, partial shadings on the PV arrays are concentrated on a group of modules. Therefore, the distribution of shading over the array increases the maximum power generation. This paper uses a modified Sudoku pattern to increase the maximum power generation from the PV array configurations. The PV array configurations are analyzed by considering column wiring resistance and cross ties resistance. The modified Sudoku pattern is applied to Total-Cross-Tied (T-C-T), Bridge-Link (B-L) and Honey-Comb (H-C) configurations and their performances are analyzed under various shading patterns, such as short narrow, short wide, long narrow, long wide, middle and diagonal. The specifications, such as Global Maximum Power (GMP), Mismatch losses, Fill Factor, Efficiency are considered to see the efficacy of various PV array configurations and their reconfigurations. From the results, it can be concluded that reconfigured T-C-T PV array generates the highest GMP compared to other configurations under considered shading patterns.

Keywords: efficiency, reconfiguration, fill factor, Bridge-link, global maximum power, honey-comb, photovoltaic array, Sudoku, Total-Cross-Tied

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Received: 25 December 2020
Revised: 06 April 2021
Accepted: 26 July 2021
Published: 06 May 2022
Issue date: September 2022

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