Article
Energy & Fuels
Ghoname Abdullah, Hidekazu Nishimura, Toshio Fujita
Summary: This paper presents an experimental investigation on how partial shading conditions affect the power output of a photovoltaic array (PV array). Results show that shading can significantly impact the efficiency of power output in a PV array.
Article
Energy & Fuels
Joao Pedro Lemos Morais, Luis Antonio Barros Herenio Madeira, Fabiano Perin Gasparin, Arno Krenzinger, Fernando Mendes, Ana Angelica Mathias Mace
Summary: This paper describes a measurement method and evaluates the uncertainty in determining the transmissivity of mesh screens used to attenuate solar radiation on PV modules. The proposed method successfully measured the transmissivity and determined the optimal sample size for all mesh screen configurations, taking 5 to 7 measurements to obtain an uncertainty of less than 1%. The work highlights the importance of measuring the transmissivity of mesh screens and provides valuable results for future research using this method.
Article
Green & Sustainable Science & Technology
G. Sai Krishna, Tukaram Moger
Summary: This paper introduces a novel adaptive reconfiguration method for enhancing the maximum power output of a PV array under partial shading conditions, which is experimentally validated to show improved performance compared to existing techniques.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Green & Sustainable Science & Technology
Andres Calcabrini, Mirco Muttillo, Raoul Weegink, Patrizio Manganiello, Miro Zeman, Olindo Isabella
Summary: This article introduces a PV module that can dynamically reconfigure interconnections between its solar cells to minimize power losses, and experimentally validates its energy generation efficiency under varying illumination conditions.
Article
Energy & Fuels
Mingyao Ma, Zhixiang Zhang, Ping Yun, Zhen Xie, Haisong Wang, Wenting Ma
Summary: This article focuses on PV module current mismatch faults, proposes a novel fault diagnosis method based on I-V data, and demonstrates the effectiveness of the method through experimental verifications from actual PV power plants.
IEEE JOURNAL OF PHOTOVOLTAICS
(2021)
Article
Green & Sustainable Science & Technology
S. Suriya Kala, D. Prince Winston, M. Pravin, G. Sakthivel
Summary: This article introduces a narrative move towards maximizing power augmentation in poly-crystalline solar photovoltaic (PV) modules through the modified Total Cross Tied (TCT) interlink connection method. Power extraction from sustainable energy sources is crucial as they are abundant, environmentally friendly, safe, and renewable. However, the output power generated from solar photovoltaic arrays can be reduced by up to 60% due to shading effects. Various strategies have been developed to overcome partial shading effects, and in this proposed method, PV cells in modules are connected via a modified TCT fashion with a bypass diode through each row.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Energy & Fuels
Luigi Abenante
Summary: A new analytical model is proposed to simulate the performance of PV modules and module arrays over time. The model takes into account the performance loss due to module degradation and performance-reducing events. Experimental validation shows that the model accurately predicts the performance of various PV devices. The model can be used to evaluate the loss or gain of PV energy output and determine reliable performance-loss rates.
Article
Energy & Fuels
Wenhao Xu, Christos Monokroussos, Harald Muellejans, Werner Herrmann
Summary: IEC 60891 ed.3, published in 2021, defines four standard I-V characteristics correction procedures numbered 1 through 4. The aim is to evaluate these four methods, and it is found that CP1 and CP2 work well over a broad range of irradiances and temperatures. However, CP1 requires accurate measurement of I-V curves at low-irradiance levels and CP2 is not suitable for low shunt-resistance modules. A new method based on CP2 is introduced to improve the performance for low shunt-resistance modules. CP3 works well but may cause distortion of corrected I-V curves during extrapolation. CP4 shows good results in I-SC but worse agreement in V-OC and P-MAX.
PROGRESS IN PHOTOVOLTAICS
(2023)
Article
Green & Sustainable Science & Technology
Nikita Ramachandra, Rajasekar Natarajan
Summary: This paper proposes a novel PV array reconfiguration method called AKDS, which disperses shade to improve energy production and reduce mismatch losses. Simulation results show that AKDS outperforms other methods in terms of fill factor and mismatch losses, and also has the potential for higher energy production, increased revenue, and reduced carbon dioxide emissions under hypothetical shade conditions. Furthermore, a hardware prototype validates the performance of AKDS in real-world situations.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Thermodynamics
Marinaldo de Jesus dos Santos Rodrigues, Pedro Ferreira Torres, Marcos Andre Barros Galhardo, Otavio Andre Chase, Weslley Leao Monteiro, Jose de Arimateia Alves Vieira Filho, Fabricio Menezes Mares, Wilson Negrao Macedo
Summary: This paper presents a novel methodology for estimating shading factor and irradiance in partially shaded photovoltaic arrays, eliminating the need for multiple irradiance sensors. A simple mathematical model is proposed to estimate shading losses at points of maximum global and local power in the array.
Article
Optics
Shahroz Anjum, Mohd Alamgir Khan, Kapil Deo Bodha, Divya Ahluwalia
Summary: This paper analyzes the effects of continuous dynamic shading scenarios on various photovoltaic array configurations and proposes an optimal design to maximize power extraction. Experimental tests and comparisons show that the matrix structure photovoltaic array with lower power losses and better fill factor is the superior configuration.
Article
Energy & Fuels
Andres Calcabrini, Raoul Weegink, Patrizio Manganiello, Miro Zeman, Olindo Isabella
Summary: This study explores how changing the module topology can increase the electrical output of photovoltaic systems under partial shading, suggesting that the shading tolerance of conventional solar modules can be significantly improved when shading is caused by nearby obstructions.
Article
Computer Science, Information Systems
Sheng Li, Tianhong Zhang, Jiawei Yu
Summary: This paper introduces a novel objective function that combines power optimization and switch action optimization in photovoltaic (PV) array reconfiguration. By optimizing the electrical positions of PV cells, the PV array can improve its power output while reducing the number of switch actions.
Article
Energy & Fuels
Xinyi Chen, Yu Shen, Tamas Kerekes, Yiye Wang, Kanjian Zhang, Haikun Wei
Summary: This article develops a comprehensive mathematical PV model based on a single-diode model, taking into account the effects of nonuniform complex shading patterns on PV behavior. The proposed model is validated in experimental tests and shows high accuracy.
IEEE JOURNAL OF PHOTOVOLTAICS
(2023)
Article
Energy & Fuels
Thiago A. Pereira, Lenon Schmitz, Walbermark M. dos Santos, Denizar C. Martins, Roberto F. Coelho
Summary: This article introduces a low-cost, portable I-V curve tracer design for evaluating the performance of photovoltaic generators and identifying faults. The design incorporates various techniques to create a compact device, with experimental results demonstrating its accuracy.
IEEE JOURNAL OF PHOTOVOLTAICS
(2021)
Article
Energy & Fuels
Siddharth Sradhasagar, Omkar Subhasish Khuntia, Srikanta Biswal, Sougat Purohit, Amritendu Roy
Summary: In this study, machine learning models were developed to predict the bandgap and its character of double perovskite materials, with LGBMRegressor and XGBClassifier models identified as the best predictors. These models were further employed to predict the bandgap of novel bismuth-based transition metal oxide double perovskites, showing high accuracy, especially in the range of 1.2-1.8 eV.
Article
Energy & Fuels
Wei Shuai, Haoran Xu, Baoyang Luo, Yihui Huang, Dong Chen, Peiwang Zhu, Gang Xiao
Summary: In this study, a hybrid model based on numerical simulation and deep learning is proposed for the optimization and operation of solar receivers. By applying the model to different application scenarios and considering multiple performance objectives, small errors are achieved and optimal structure parameters and heliostat scales are identified. This approach is not only applicable to gas turbines but also heating systems.
Article
Energy & Fuels
Mubashar Ali, Zunaira Bibi, M. W. Younis, Muhammad Mubashir, Muqaddas Iqbal, Muhammad Usman Ali, Muhammad Asif Iqbal
Summary: This study investigates the structural, mechanical, and optoelectronic properties of the BaCuF3 fluoroperovskite using the first-principles modelling approach. The stability and characteristics of different cubic structures of BaCuF3 are evaluated, and the alpha-BaCuF3 and beta-BaCuF3 compounds are found to be mechanically stable with favorable optical properties for solar cells and high-frequency UV applications.
Article
Energy & Fuels
Dong Le Khac, Shahariar Chowdhury, Asmaa Soheil Najm, Montri Luengchavanon, Araa mebdir Holi, Mohammad Shah Jamal, Chin Hua Chia, Kuaanan Techato, Vidhya Selvanathan
Summary: A novel recycling system is proposed in this study to decompose and reclaim the constituent materials of organic-inorganic perovskite solar cells (PSCs). By utilizing a one-step solution process extraction approach, the chemical composition of each layer is successfully preserved, enabling their potential reuse. The proposed recycling technique helps mitigate pollution risks, minimize waste generation, and reduce recycling costs.
Article
Energy & Fuels
Peijie Lin, Feng Guo, Xiaoyang Lu, Qianying Zheng, Shuying Cheng, Yaohai Lin, Zhicong Chen, Lijun Wu, Zhuang Qian
Summary: This paper proposes an open-set fault diagnosis model for PV arrays based on 1D VoVNet-SVDD. The model accurately diagnoses various types of faults and is capable of identifying unknown fault types.