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Power and efficiency enhancement of solar photovoltaic power plants through grouped string voltage balancing approach

Solar photovoltaic (PV) power plants? performance is severely impacted by multi-level irradiances or partial shading, leading to power losses and voltage instability. Also, partial shading adds further complexity to the maximum power point tracking algorithms by introducing numerous peaks in the pow...

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Main Authors:	Ranjan Satpathy P., Ramachandaramurthy V.K., Radha Krishnan T.R., Pulenthirarasa S., Padmanaban S.
Other Authors:	57195339278
Format:	Article
Published:	Elsevier Ltd 2025
Subjects:	Dynamic re-configuration Energy Partial shading Photovoltaic Photovoltaics Power curves Power enhancement Powerloss Solar photovoltaic power plants Voltage balancing
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id	my.uniten.dspace-36370
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spelling	my.uniten.dspace-363702025-03-03T15:42:07Z Power and efficiency enhancement of solar photovoltaic power plants through grouped string voltage balancing approach Ranjan Satpathy P. Ramachandaramurthy V.K. Radha Krishnan T.R. Pulenthirarasa S. Padmanaban S. 57195339278 6602912020 59328689700 59328957500 18134802000 Dynamic re-configuration Energy Partial shading Photovoltaic Photovoltaics Power curves Power enhancement Powerloss Solar photovoltaic power plants Voltage balancing Solar photovoltaic (PV) power plants? performance is severely impacted by multi-level irradiances or partial shading, leading to power losses and voltage instability. Also, partial shading adds further complexity to the maximum power point tracking algorithms by introducing numerous peaks in the power curves, resulting in additional losses. Numerous solutions are presented to deal with shading losses, and dynamic reconfiguration is the most effective; however, higher switch count and complex architecture make it impractical in real-world implementation. Hence, this study proposes a low-complexity architecture based on the grouped string voltage balancing approach. This approach utilizes a voltage balancing converter connected to groups of strings to enhance the power output of the array of PV plants, maintain overall system voltage stability, and eliminate the possibility of multiple peaks formation in the power curves. The effectiveness of the proposed approach is tested under numerous static and dynamic partial shadings and analyzed using power curves, power output, losses, efficiencies, and voltage stability. The validation is done by comparing the proposed approach with conventional and advanced architectures for a 32.5 kW system. The results show that the proposed method requires a 50 % reduced switch count than existing techniques, achieves 99.54 % efficiency, and maintains an average voltage stability of 0.01. ? 2024 The Author(s) Final 2025-03-03T07:42:07Z 2025-03-03T07:42:07Z 2024 Article 10.1016/j.ecmx.2024.100711 2-s2.0-85204077555 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85204077555&doi=10.1016%2fj.ecmx.2024.100711&partnerID=40&md5=38cd1c842c273db740b93d2ff7b455f7 https://irepository.uniten.edu.my/handle/123456789/36370 24 100711 All Open Access; Gold Open Access Elsevier Ltd Scopus
institution	Universiti Tenaga Nasional
building	UNITEN Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Tenaga Nasional
content_source	UNITEN Institutional Repository
url_provider	http://dspace.uniten.edu.my/
topic	Dynamic re-configuration Energy Partial shading Photovoltaic Photovoltaics Power curves Power enhancement Powerloss Solar photovoltaic power plants Voltage balancing
spellingShingle	Dynamic re-configuration Energy Partial shading Photovoltaic Photovoltaics Power curves Power enhancement Powerloss Solar photovoltaic power plants Voltage balancing Ranjan Satpathy P. Ramachandaramurthy V.K. Radha Krishnan T.R. Pulenthirarasa S. Padmanaban S. Power and efficiency enhancement of solar photovoltaic power plants through grouped string voltage balancing approach
description	Solar photovoltaic (PV) power plants? performance is severely impacted by multi-level irradiances or partial shading, leading to power losses and voltage instability. Also, partial shading adds further complexity to the maximum power point tracking algorithms by introducing numerous peaks in the power curves, resulting in additional losses. Numerous solutions are presented to deal with shading losses, and dynamic reconfiguration is the most effective; however, higher switch count and complex architecture make it impractical in real-world implementation. Hence, this study proposes a low-complexity architecture based on the grouped string voltage balancing approach. This approach utilizes a voltage balancing converter connected to groups of strings to enhance the power output of the array of PV plants, maintain overall system voltage stability, and eliminate the possibility of multiple peaks formation in the power curves. The effectiveness of the proposed approach is tested under numerous static and dynamic partial shadings and analyzed using power curves, power output, losses, efficiencies, and voltage stability. The validation is done by comparing the proposed approach with conventional and advanced architectures for a 32.5 kW system. The results show that the proposed method requires a 50 % reduced switch count than existing techniques, achieves 99.54 % efficiency, and maintains an average voltage stability of 0.01. ? 2024 The Author(s)
author2	57195339278
author_facet	57195339278 Ranjan Satpathy P. Ramachandaramurthy V.K. Radha Krishnan T.R. Pulenthirarasa S. Padmanaban S.
format	Article
author	Ranjan Satpathy P. Ramachandaramurthy V.K. Radha Krishnan T.R. Pulenthirarasa S. Padmanaban S.
author_sort	Ranjan Satpathy P.
title	Power and efficiency enhancement of solar photovoltaic power plants through grouped string voltage balancing approach
title_short	Power and efficiency enhancement of solar photovoltaic power plants through grouped string voltage balancing approach
title_full	Power and efficiency enhancement of solar photovoltaic power plants through grouped string voltage balancing approach
title_fullStr	Power and efficiency enhancement of solar photovoltaic power plants through grouped string voltage balancing approach
title_full_unstemmed	Power and efficiency enhancement of solar photovoltaic power plants through grouped string voltage balancing approach
title_sort	power and efficiency enhancement of solar photovoltaic power plants through grouped string voltage balancing approach
publisher	Elsevier Ltd
publishDate	2025
_version_	1825816176860594176
score	13.244413

Power and efficiency enhancement of solar photovoltaic power plants through grouped string voltage balancing approach

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