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:: Volume 14, Issue 2 (8-2025) ::
ieijqp 2025, 14(2): 0-0 Back to browse issues page
Impacts of Shading on Photovoltaic Panel Performance and Mitigating Strategies
Shayan Bozorgpuore1 , Aslan Gholami *1
1- Shahid Beheshti University & Department of Renewable Energy Engineering
Abstract:   (83 Views)
Photovoltaic panels, as one of the cornerstones of renewable energy production, play a pivotal role in the global transition toward clean energy sources. However, the detrimental effects of shading, an unavoidable environmental challenge, can significantly reduce the efficiency of these systems. This review article aims to provide a comprehensive analysis of the impact of various shading types on photovoltaic panel performance and to introduce innovative strategies for mitigating these effects. Initially, the types of shading, including horizontal, vertical, oblique, and scattered, along with their direct effects on efficiency reduction, hotspot formation, and fill factor degradation, are examined. Subsequently, three primary approaches to mitigating shading effects are reviewed: (1) the use of electrical devices such as bypass diodes, optimizers, and microinverters, (2) optimizing cell structures through designs like half-cells and shingled cells, and (3) advanced photovoltaic array configurations, such as the Total Cross Tied and Sudoku arrangements. Findings indicate that innovative configurations like Sudoku and physical rearrangement designs can outperform traditional methods by reducing power losses and improving system efficiency under shaded conditions. For instance, certain reconfiguration methods have demonstrated an average output power increase of up to 22.46% compared to conventional approaches, particularly the Total Cross Tied method. Additionally, configurations like Sudoku have shown the potential to reduce power losses by as much as 53.68% under specific shading patterns.  Finally, future research directions are proposed, including the development of intelligent shading prediction models, combined analysis of shading and soiling effects, and the utilization of novel technologies such as flexible photovoltaic panels. This review aims to provide a holistic perspective for enhancing photovoltaic system efficiency and mitigating the adverse effects of shading.
Keywords: Photovoltaic Panels, Shading, Bypass Diode, Cells Configuration, Renewable Energy.
     
Type of Study: Research | Subject: Special
Received: 2025/01/30 | Accepted: 2025/08/2 | Published: 2025/08/10
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Bozorgpuore S, Gholami A. Impacts of Shading on Photovoltaic Panel Performance and Mitigating Strategies. ieijqp 2025; 14 (2)
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نشریه علمی- پژوهشی کیفیت و بهره وری صنعت برق ایران Iranian Electric Industry Journal of Quality and Productivity
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