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Impact of PSO Reinitialization on the Accuracy of Dynamic Global Maximum Power Detection of Variant Partially Shaded PV Systems

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Sustainable Energy Technologies Center, King Saud University, Riyadh 11421, Saudi Arabia
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Electrical Engineering Department, Mansoura University, Mansoura 35516, Egypt
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Electrical Engineering Department, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia
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Saudi Electricity Company Chair in Power System Reliability and Security, King Saud University, Riyadh 11421, Saudi Arabia
*
Author to whom correspondence should be addressed.
Sustainability 2019, 11(7), 2091; https://doi.org/10.3390/su11072091
Received: 14 February 2019 / Revised: 13 March 2019 / Accepted: 26 March 2019 / Published: 8 April 2019
(This article belongs to the Section Sustainable Engineering and Science)
The Global Maximum Power (GMP) of photovoltaic (PV) systems changes its location on the power–voltage (P–V) curve as the shading pattern (SP) changes over time. Although the original Particle Swarm Optimization (PSO) technique can catch the GMP easily under the same SP, once it changes its location, it cannot catch the new GMP because the particles search around the first GMP caught. Therefore, conventional PSO is a time-invariant GMP tracker that cannot follow the dynamic GMP under variant SP. The novelty in this study is the modification of the conventional PSO technique to become a time-variant GMP technique. This has been achieved through dispersing the particles based on two new reinitialization methodologies for searching for the variant GMP. The first methodology depends on dispersing the PSO particles at a certain predefined time (PDT) in order to look for the new GMP of the new SP. The latter depends on continually monitoring any changes in the SP to disperse the particles to follow the new GMP. A detailed comparison between the improved PSO with two new reinitialization methodologies and the conventional PSO is introduced. The improved PSO with SP change reinitialization methodology tracked the dynamic GMP efficiently and accurately compared the conventional PSO and the improved PSO with PDT reinitialization. Also, no hardware modification in the existing PV system is required, which makes it an excellent option to improve the performance of new and existing PV systems. View Full-Text
Keywords: global maximum power; partially shaded PV; particle swarm optimization; time-variant shading pattern; PSO reinitialization global maximum power; partially shaded PV; particle swarm optimization; time-variant shading pattern; PSO reinitialization
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MDPI and ACS Style

Eltamaly, A.M.; M. H. Farh, H.; S. Al Saud, M. Impact of PSO Reinitialization on the Accuracy of Dynamic Global Maximum Power Detection of Variant Partially Shaded PV Systems. Sustainability 2019, 11, 2091. https://doi.org/10.3390/su11072091

AMA Style

Eltamaly AM, M. H. Farh H, S. Al Saud M. Impact of PSO Reinitialization on the Accuracy of Dynamic Global Maximum Power Detection of Variant Partially Shaded PV Systems. Sustainability. 2019; 11(7):2091. https://doi.org/10.3390/su11072091

Chicago/Turabian Style

Eltamaly, Ali M., Hassan M. H. Farh, and Mamdooh S. Al Saud. 2019. "Impact of PSO Reinitialization on the Accuracy of Dynamic Global Maximum Power Detection of Variant Partially Shaded PV Systems" Sustainability 11, no. 7: 2091. https://doi.org/10.3390/su11072091

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