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Reconfiguration Method to Extract More Power from Partially Shaded Photovoltaic Arrays with Series-Parallel Topology

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  • Xiaoguang Liu

    (Department of Electronic and Optical Engineering, Army Engineering University, Shijiazhuang 050000, China)

  • Yuefeng Wang

    (Department of Electronic and Optical Engineering, Army Engineering University, Shijiazhuang 050000, China)

Abstract

A photovoltaic (PV) array is composed of several panels connected in series-parallel topology in most actual applications. However, partial shading of a PV array can dramatically reduce power generation. This paper presents a new reconfiguration method to extract more power from PV arrays under partial shade conditions. The method is designed using the effective maximum power point current and voltage of a PV panel. Its advantages involve (i) the method reconfigures the PV array without measuring the irradiance profile, and (ii) the reconfiguration is executed on the level of a PV module. Based on these two aspects, the method disperses the shade uniformly within the PV array, reducing the mismatch loss significantly and increasing power generation. The performance of the proposed method is investigated for different shade patterns and results show improved performance under partial shade conditions.

Suggested Citation

  • Xiaoguang Liu & Yuefeng Wang, 2019. "Reconfiguration Method to Extract More Power from Partially Shaded Photovoltaic Arrays with Series-Parallel Topology," Energies, MDPI, vol. 12(8), pages 1-16, April.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:8:p:1439-:d:222779
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    References listed on IDEAS

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    2. Astitva Kumar & Mohammad Rizwan & Uma Nangia & Muhannad Alaraj, 2021. "Grey Wolf Optimizer-Based Array Reconfiguration to Enhance Power Production from Solar Photovoltaic Plants under Different Scenarios," Sustainability, MDPI, vol. 13(24), pages 1-18, December.
    3. Mohammed Alkahtani & Zuyu Wu & Colin Sokol Kuka & Muflah S. Alahammad & Kai Ni, 2020. "A Novel PV Array Reconfiguration Algorithm Approach to Optimising Power Generation across Non-Uniformly Aged PV Arrays by Merely Repositioning," J, MDPI, vol. 3(1), pages 1-22, February.
    4. Andrés Tobón & Julián Peláez-Restrepo & Jhon Montano & Mariana Durango & Jorge Herrera & Asier Ibeas, 2020. "MPPT of a Photovoltaic Panels Array with Partial Shading Using the IPSM with Implementation Both in Simulation as in Hardware," Energies, MDPI, vol. 13(4), pages 1-17, February.
    5. Calcabrini, Andres & Muttillo, Mirco & Weegink, Raoul & Manganiello, Patrizio & Zeman, Miro & Isabella, Olindo, 2021. "A fully reconfigurable series-parallel photovoltaic module for higher energy yields in urban environments," Renewable Energy, Elsevier, vol. 179(C), pages 1-11.

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