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Enhanced power generation of partial shaded photovoltaic fields by forecasting the interconnection of modules

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  • Pareek, Smita
  • Dahiya, Ratna

Abstract

SPV (solar photovoltaic) systems are often partially shadowed by passing cloud, neighboring building, chimney, tree, telephone pole etc. As a result, their produced power is lower than the expected value despite their size. This reduction in produced power is dependent on area of PVs under shade, shade scenario, module interconnection styles and also on the connection of shaded and non-shaded modules. This paper presents a novel method to forecast the interconnection of modules in a TCT (total-cross-tied) connected PV (​photovoltaic) array. In this approach, the placement of shaded and non-shaded modules in array are done in such a way so as to distribute the shading effects evenly in each row thereby enhance the PV array power. The performance of this method is investigated for different shading patterns which are the approximations for the most common partial shading scenarios in PV fields and the results show that it can provide multiple solutions for reconfiguration of photovoltaic array to improve energy yield under partial shading conditions. In addition, the power–voltage characteristic curve of these reconfigurable PV arrays are much smoother than that of TCT (total-cross-tied) configured PV arrays and thus ease the work of MPP (maximum power point) techniques. Also this method can easily be implemented for the design of large photovoltaic structures without tedious mathematical formulation.

Suggested Citation

  • Pareek, Smita & Dahiya, Ratna, 2016. "Enhanced power generation of partial shaded photovoltaic fields by forecasting the interconnection of modules," Energy, Elsevier, vol. 95(C), pages 561-572.
    • Handle: RePEc:eee:energy:v:95:y:2016:i:c:p:561-572
    DOI: 10.1016/j.energy.2015.12.036
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    References listed on IDEAS

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    2. Gao, Mingming & Li, Jianjing & Hong, Feng & Long, Dongteng, 2019. "Day-ahead power forecasting in a large-scale photovoltaic plant based on weather classification using LSTM," Energy, Elsevier, vol. 187(C).
    3. Malathy, S. & Ramaprabha, R., 2018. "Reconfiguration strategies to extract maximum power from photovoltaic array under partially shaded conditions," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P2), pages 2922-2934.
    4. 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.
    5. Bana, Sangram & Saini, R.P., 2017. "Experimental investigation on power output of different photovoltaic array configurations under uniform and partial shading scenarios," Energy, Elsevier, vol. 127(C), pages 438-453.
    6. Satpathy, Priya Ranjan & Sharma, Renu & Dash, Sambit, 2019. "An efficient SD-PAR technique for maximum power generation from modules of partially shaded PV arrays," Energy, Elsevier, vol. 175(C), pages 182-194.
    7. Belqasem Aljafari & Rupendra Kumar Pachauri & Sudhakar Babu Thanikanti & Bamidele Victor Ayodele, 2023. "Innovative Methodologies for Higher Global MPP of Photovoltaic Arrays under PSCs: Experimental Validation," Sustainability, MDPI, vol. 15(15), pages 1-28, August.
    8. Dhimish, Mahmoud & Holmes, Violeta & Mehrdadi, Bruce & Dales, Mark & Chong, Benjamin & Zhang, Li, 2017. "Seven indicators variations for multiple PV array configurations under partial shading and faulty PV conditions," Renewable Energy, Elsevier, vol. 113(C), pages 438-460.
    9. Kamran Ali Khan Niazi & Yongheng Yang & Mashood Nasir & Dezso Sera, 2019. "Evaluation of Interconnection Configuration Schemes for PV Modules with Switched-Inductor Converters under Partial Shading Conditions," Energies, MDPI, vol. 12(14), pages 1-12, July.
    10. Belhaouas, N. & Cheikh, M.-S. Ait & Agathoklis, P. & Oularbi, M.-R. & Amrouche, B. & Sedraoui, K. & Djilali, N., 2017. "PV array power output maximization under partial shading using new shifted PV array arrangements," Applied Energy, Elsevier, vol. 187(C), pages 326-337.
    11. Ali Faisal Murtaza & Hadeed Ahmed Sher, 2023. "A Reconfiguration Circuit to Boost the Output Power of a Partially Shaded PV String," Energies, MDPI, vol. 16(2), pages 1-13, January.
    12. Manoharan Premkumar & Umashankar Subramaniam & Thanikanti Sudhakar Babu & Rajvikram Madurai Elavarasan & Lucian Mihet-Popa, 2020. "Evaluation of Mathematical Model to Characterize the Performance of Conventional and Hybrid PV Array Topologies under Static and Dynamic Shading Patterns," Energies, MDPI, vol. 13(12), pages 1-37, June.

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