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A Scalable Hierarchical Dynamic PV Array Reconfiguration under Partial Shading

Author

Listed:
  • Fatimah Ameen

    (Institute of Automation and Info-Communication, University of Miskolc, 3515 Miskolc, Hungary)

  • Abdulrahman Siddiq

    (Department of Electronic and Control Engineering, Northern Technical University, Kirkuk 3600, Iraq)

  • Attila Trohák

    (Institute of Automation and Info-Communication, University of Miskolc, 3515 Miskolc, Hungary)

  • Rabab Benotsmane

    (Institute of Automation and Info-Communication, University of Miskolc, 3515 Miskolc, Hungary)

Abstract

Photovoltaic (PV) arrays are often affected by partial shading (PS), which can significantly reduce their power output. Dynamic reconfiguration is a promising technique for mitigating the negative effects of PS by adjusting the electrical connections of the PV modules in real-time. This paper introduces a hierarchical-based switching block scheme for the dynamic reconfiguration of PV arrays under PS conditions. With the aim of mitigating the negative impact of PS on PV arrays, the proposed system employs a low complexity and easily scalable architecture, making it well-suited for practical applications. Comparative assessments against conventional configurations such as bridge-linked (BL), total-cross-tied (TCT), and series–parallel (SP) reveal superior energy harvesting efficiency for the proposed system under various shading conditions. The hierarchical switching block architecture, featuring multiple levels of switching blocks, enables efficient and flexible reconfiguration of the PV array, even in the presence of complex shading patterns. Through extensive simulations, the system consistently outperforms conventional configurations by adapting effectively to changing shading patterns and optimizing the PV array’s output. The proposed switching block (SB) reconfiguration technique significantly outperforms existing methods like TCT, Sudoku, dynamic proposals, and Magic Square in terms of both power generation (up to 42.52% increase) and efficiency (up to 42.13% improvement) under diverse partial shading conditions. The proposed hierarchical-based switching block scheme thus presents a promising solution for enhancing the dynamic reconfiguration of PV arrays under PS conditions, offering a balance between low complexity, scalability, and superior energy harvesting efficiency for practical applications in the realm of solar energy.

Suggested Citation

  • Fatimah Ameen & Abdulrahman Siddiq & Attila Trohák & Rabab Benotsmane, 2023. "A Scalable Hierarchical Dynamic PV Array Reconfiguration under Partial Shading," Energies, MDPI, vol. 17(1), pages 1-20, December.
    • Handle: RePEc:gam:jeners:v:17:y:2023:i:1:p:181-:d:1309491
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    References listed on IDEAS

    as
    1. Satpathy, Priya Ranjan & Jena, Sasmita & Sharma, Renu, 2018. "Power enhancement from partially shaded modules of solar PV arrays through various interconnections among modules," Energy, Elsevier, vol. 144(C), pages 839-850.
    2. Tuhibur Rahman & Ahmed Al Mansur & Molla Shahadat Hossain Lipu & Md. Siddikur Rahman & Ratil H. Ashique & Mohamad Abou Houran & Rajvikram Madurai Elavarasan & Eklas Hossain, 2023. "Investigation of Degradation of Solar Photovoltaics: A Review of Aging Factors, Impacts, and Future Directions toward Sustainable Energy Management," Energies, MDPI, vol. 16(9), pages 1-30, April.
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