Article
Green & Sustainable Science & Technology
Pankaj Verma, Tarlochan Kaur, Raminder Kaur
Summary: The paper proposes a novel deloading-based power control strategy for a dc/dc converter, monitoring MPP using an artificial neural network and adjusting reserve using a fuzzy reserve controller. The suitability of this approach is justified by comparing it with mainstream reserve approaches. The effectiveness of the developed controls is validated through simulations and experimental results.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Engineering, Electrical & Electronic
Praveen Kumar Bonthagorla, Suresh Mikkili
Summary: This research focuses on evaluating the performance of different PV array configurations under various partial shading scenarios, analyzing their comparative performance in terms of power loss, efficiency, power points, etc.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Green & Sustainable Science & Technology
Houssam Deboucha, Mostefa Kermadi, Saad Mekhilef, Sofia Lalouni Belaid
Summary: The efficiency of photovoltaic (PV) systems is highly dependent on continuously varying atmospheric conditions. To optimize the PV system efficiency under fast-changing environmental conditions, including partial shading, an efficient maximum power point tracking (MPPT) method is required. This paper proposes a different MPPT control structure that integrates the MPPT algorithm into the proportional-integral (PI) voltage controller routine, achieving high-speed MPPT and extreme dynamic tracking improvements.
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY
(2023)
Article
Optics
Wojciech Kreft, Estera Przenzak, Mariusz Filipowicz
Summary: The paper focuses on analyzing the operation of the photovoltaic chain under partial shading conditions. The model of the PV system was implemented in MATLAB/Simulink, with two cases analyzed - one with bypass diodes for each module and one without. The model was validated through experiments under different conditions.
Article
Energy & Fuels
Eduardo Jose Barbosa, Marcelo Cabral Cavalcanti, Gustavo Medeiros Souza Azevedo, Rafael Cavalcanti Neto, Eduardo Augusto Oliveira Barbosa, Fabricio Bradaschia
Summary: This article proposes a hybrid global maximum power point tracking technique that combines the advantages of model-based and heuristic techniques. It aims to achieve high speed and accuracy by utilizing a precise single-diode model to estimate the MPP. The technique is computationally efficient and suitable for PV series applications.
IEEE JOURNAL OF PHOTOVOLTAICS
(2023)
Article
Energy & Fuels
Jun Qi, Xun Huang, Beijia Ye, Dan Zhou
Summary: Reconfiguration is an effective way to increase the output power of a PV array under partial shadows. However, the traditional methods overlook the error caused by treating partially shaded PV modules as fully shaded ones. To address this issue, a new reconfiguration method based on the exact partial shadow shape projected on the PV array is proposed. Extensive cell-based simulations demonstrate the effectiveness of the proposed method in enhancing the PV output power when compared to other reconfiguration methods and shadow distributions.
CSEE JOURNAL OF POWER AND ENERGY SYSTEMS
(2023)
Article
Green & Sustainable Science & Technology
Abdelaziz Zerglaine, Ahmed Mohammedi, Nasser Eddine Mebarki, Djamila Rekioua, Toufik Rekioua
Summary: The study aims to investigate the performance of a PV generator under different shading scenarios and compare the efficiency under various shading conditions. The results show that partial shading can significantly increase PV power gain, while random shading leads to a larger decrease in PV efficiency.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Energy & Fuels
Anelise Medeiros Pires, Marilia Braga, Ricardo Ruther
Summary: The performance of three ground-mounted fixed-tilt photovoltaic systems in Florianopolis, Brazil was analyzed, with results showing that the CdTe with ARC PV system performed the best. Environmental parameters such as temperature and spectral content of sunlight were found to have the highest impacts on PV system performance.
PROGRESS IN PHOTOVOLTAICS
(2021)
Article
Energy & Fuels
Kari Lappalainen, Seppo Valkealahti
Summary: This experimental study investigates the MPP characteristics of partially shaded strings of photovoltaic modules, eliminating the shortcomings of previous studies based on hypothetical shading patterns. The research shows that the global MPP voltage fluctuates widely, and by using the MPP closest to the nominal voltage as the operating point, significant reduction in energy losses can be achieved.
Article
Engineering, Multidisciplinary
Cagri Batuhan Oguz, Emre Avci, Salih Baris Ozturk
Summary: This study evaluates the performance of a PV power plant, considering different connection types, partial shading conditions, and MPPT algorithms. The results show that the Total Cross Tied (TCT) connection type performs better than others under all shading conditions. Shading patterns have different effects on the system's losses and efficiency. It has been proven that simple algorithms can achieve the performance of complex algorithms when the connection type is properly adjusted. Overall, considering different combinations is crucial for enhancing PV system efficiency and reducing installation complexity.
ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH
(2023)
Article
Green & Sustainable Science & Technology
Kristijan Brecl, Matevz Bokalic, Marko Topic
Summary: This study presents shading analyses and energy performance simulations of wafer-based silicon photovoltaic modules with cut-cells under partial shading conditions. The results show that proper layout of cut cells can significantly reduce shading losses.
Article
Green & Sustainable Science & Technology
Ellen David Chepp, Fabiano Perin Gasparin, Arno Krenzinger
Summary: This article presents a simple and accurate method for modeling the I-V curves of photovoltaic systems under partial shading conditions, as well as an improved method for accurately estimating the energy generated by such systems without calculating the I-V curves. The proposed methods were compared with existing methods in the literature and showed higher accuracy. The results demonstrate the importance of accurate modeling and estimation in photovoltaic systems under partial shading conditions.
Article
Computer Science, Information Systems
Preeti Verma, Afroz Alam, Adil Sarwar, Mohd Tariq, Hani Vahedi, Deeksha Gupta, Shafiq Ahmad, Adamali Shah Noor Mohamed
Summary: This article reviews the advancements in global maximum power point tracking (GMPPT) algorithms for solar photovoltaic systems under partial shading conditions. It discusses various MPPT strategies, their working principles, and mathematical representations as a reference for designing PV systems.
Article
Computer Science, Artificial Intelligence
Tao Hai, Jasni Mohamad Zain, Hiroki Nakamura
Summary: This paper proposes a novel maximum power point tracking (MPPT) technique for photovoltaic (PV) systems based on sliding mode controller (SMC) and grey wolf optimizer (GWO) algorithm. The proposed technique achieves higher efficiency and faster response time in various climatic conditions compared to prevalent methods.
Article
Automation & Control Systems
Mostefa Kermadi, Zainal Salam, Jubaer Ahmed, El Madjid Berkouk
Summary: The article introduces a fast and efficient MPPT for PV systems under rapidly changing shading conditions, reducing search path length and minimizing the search area using intelligent mechanisms. Evaluation against other algorithms shows superior performance in terms of speed and reliability.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Health Care Sciences & Services
Lamprini Kontopoulou, Ourania S. Kotsiou, Konstantinos Tourlakopoulos, Georgios Karpetas, Eva V. Paraskevadaki, Foteini Malli, Ioannis Pantazopoulos, Zoe Daniil, Konstantinos I. Gourgoulianis
Summary: This study investigated the adherence to the Mediterranean Diet and its association with asthma severity and quality of life in obese patients with asthma. The results showed moderate adherence to the Mediterranean Diet and a significant relationship between obesity, alcoholic beverage consumption, and lower physical health-related quality of life.
JOURNAL OF PERSONALIZED MEDICINE
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
E. Paraskevadaki, S. Papathanassiou, G. Vokas
APPLIED ELECTROMAGNETIC ENGINEERING FOR MAGNETIC, SUPERCONDUCTING AND NANOMATERIALS
(2011)
