Analysis of Solar Photovoltaic Array Interconnection Schemes Working Under Partial Shading Conditions

Nadia, Ben Si Ali; Merah, Ahmed; Benalia, Nadia; Nora, Zerzouri

doi:10.1109/icsresa49121.2019.9182421

Cited by 4 publications

References 6 publications

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Characteristic Study of Solar Photovoltaic Array Under Different Partial Shading Conditions

et al. 2022

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Photovoltaic (PV) systems are frequently exposed to partial or complete shading phenomena. Partial shading has a profound impact on the performance of solar power generation. The operational performance of PV arrays under partial shading shows multiple maximum power point peaks, therefore it is challenging to identify the actual maximum power point. This paper investigates the impact of partial shading location on the output power of solar photovoltaic arrays with various configurations. Multiple photovoltaic strings, in both parallel and series configurations, are considered. Different random shading patterns are considered and analyzed to determine which configuration has higher maximum power point. The sensitivity of the partial shading can change according to the partial shading types, shading pattern, and the configuration used to connect all PV modules. Moreover, the study also investigates the output of the PV array with shading two random models, two consecutive models, and three random and consecutive modules. Experimental results validate the analysis and demonstrate the effect of various partial shading on the efficiency and performance of the PV system.

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Characteristic Study of Solar Photovoltaic Array Under Different Partial Shading Conditions

et al. 2022

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Performance Improvement of Solar PV Under Partial Shading Conditions

Ahmadzai

Varshney

2021

2021 International Conference on Intelligent Technologies (CONIT)

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Development of novel Cuckoo search optimization-based controller for partially shaded Photovoltaic system

Karunanidhi

Ramasamy

Samuel³

et al. 2023

IFS

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Among the list of reliability issues in Photovoltaic (PV) systems, partial shading is one of the crucial issues that affect the row current creating a wide range of current differences between rows these results in reduced output power and panel life span by creating hotspots. It also creates difficulty in tracking the power, because of multiple hotspot peaks obtainable in PV and IV (Current-Voltage) curves. Physical relocation of panels during shade occurrence is not an encouraging solution because of rooftop solar and domestic PV systems, where the area for PV installation is a ceiling. The optimization-based controller is retrofitted for the electrical relocation of panels. It is developed based on the Cuckoo Search Algorithm (CSA), which aims to reduce the row current difference with a minimum reposition of panels as constraints. For the 9*9 PV arrangement, the row current ranges from 3.747 A to 8.424 A. It is reduced and almost made zero. Hence, the Fill factor raises from 38.073 to 51.707%. The power output is enhanced by about 20%. To prove the algorithm’s novelty a shading case for 4*3 asymmetric array arrangement is also considered for simulation studies. The proposed system proves to be economically beneficent for PV users. The performance of CSA is compared with PSO, Skyscraper, and SuDoKu. An economic analysis is carried out that adds the PV efficiency value to the proposed CSA algorithm. The real-time experimental validation holds good for 3*3 solar array agreement with theoretically simulated results.

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Analysis of Solar Photovoltaic Array Interconnection Schemes Working Under Partial Shading Conditions

Cited by 4 publications

References 6 publications

Characteristic Study of Solar Photovoltaic Array Under Different Partial Shading Conditions

Characteristic Study of Solar Photovoltaic Array Under Different Partial Shading Conditions

Performance Improvement of Solar PV Under Partial Shading Conditions

Development of novel Cuckoo search optimization-based controller for partially shaded Photovoltaic system

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