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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| Format: | Article |
| Language: | English |
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Elsevier
2024-10-01
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| Series: | Energy Conversion and Management: X |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590174524001892 |
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| author | Priya Ranjan Satpathy Vigna K. Ramachandaramurthy Thurga R. Radha Krishnan Saranya Pulenthirarasa Sanjeevikumar Padmanaban |
| author_facet | Priya Ranjan Satpathy Vigna K. Ramachandaramurthy Thurga R. Radha Krishnan Saranya Pulenthirarasa Sanjeevikumar Padmanaban |
| author_sort | Priya Ranjan Satpathy |
| collection | DOAJ |
| 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. |
| format | Article |
| id | doaj-art-f079ebff2e6f4c91bb4272028ec808a2 |
| institution | OA Journals |
| issn | 2590-1745 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Conversion and Management: X |
| spelling | doaj-art-f079ebff2e6f4c91bb4272028ec808a22025-08-20T02:37:05ZengElsevierEnergy Conversion and Management: X2590-17452024-10-012410071110.1016/j.ecmx.2024.100711Power and efficiency enhancement of solar photovoltaic power plants through grouped string voltage balancing approachPriya Ranjan Satpathy0Vigna K. Ramachandaramurthy1Thurga R. Radha Krishnan2Saranya Pulenthirarasa3Sanjeevikumar Padmanaban4Institute of Power Engineering, College of Engineering, Universiti Tenaga Nasional, Malaysia; Corresponding authors.Institute of Power Engineering, College of Engineering, Universiti Tenaga Nasional, MalaysiaInstitute of Power Engineering, College of Engineering, Universiti Tenaga Nasional, MalaysiaInstitute of Power Engineering, College of Engineering, Universiti Tenaga Nasional, MalaysiaDepartment of Electrical Engineering, IT and Cybernetics, University of South Eastern Norway, Porsgrunn, Norway; Corresponding authors.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.http://www.sciencedirect.com/science/article/pii/S2590174524001892Photovoltaic (PV)EnergyPartial shadingPower enhancementDynamic reconfiguration |
| spellingShingle | Priya Ranjan Satpathy Vigna K. Ramachandaramurthy Thurga R. Radha Krishnan Saranya Pulenthirarasa Sanjeevikumar Padmanaban Power and efficiency enhancement of solar photovoltaic power plants through grouped string voltage balancing approach Energy Conversion and Management: X Photovoltaic (PV) Energy Partial shading Power enhancement Dynamic reconfiguration |
| title | 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_short | 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 |
| topic | Photovoltaic (PV) Energy Partial shading Power enhancement Dynamic reconfiguration |
| url | http://www.sciencedirect.com/science/article/pii/S2590174524001892 |
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