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Journal articles on the topic 'PV string'

Author: Grafiati

Published: 14 March 2023

Last updated: 31 July 2025

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1

Li, Xiaofei, Zhao Wang, Yinnan Liu, et al. "A Novel Operating State Evaluation Method for Photovoltaic Strings Based on TOPSIS and Its Application." Sustainability 15, no. 9 (2023): 7268. http://dx.doi.org/10.3390/su15097268.

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PV strings are essential for energy conversion in large-scale photovoltaic (PV) power plants. The operating state of PV strings directly affects the power generation efficiency and economic benefits of PV power plants. In the process of evaluating PV arrays, a reference array needs to be identified. By comparing PV arrays with the reference array, the operational status of the PV arrays can be evaluated. However, in the actual operation of PV power stations, it is difficult to directly determine the reference state of a PV array due to random fluctuations in the PV power output. In order to so

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Rivai, A., O. Erixno, N. A. Rahim, M. F. M. Elias, J. Jamaludin, and F. Ramadhani. "A Multi-String Photovoltaic Current-Voltage (I-V) Curve Tracer." Journal of Physics: Conference Series 2942, no. 1 (2025): 012001. https://doi.org/10.1088/1742-6596/2942/1/012001.

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Abstract This paper presents the design and the development of multi-string I-V curve tracer for photovoltaic (PV) strings. It uses a capacitive load and double pole relay to measure the I-V characteristics of a multiple PV strings simultaneously. The prototype is developed using a PIC18F4550 micro-controller and a graphical user interface GUI designed using Microsoft’s Visual Studio software. The I-V characteristics of the PV string are displayed on LCD (Liquid Crystal Display) and computer. The performance and functionality of the proposed I-V curve tracer have been tested using four PV stri

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Rodrigues, Sandy, Gerhard Mütter, Helena Geirinhas Ramos, and F. Morgado-Dias. "Machine Learning Photovoltaic String Analyzer." Entropy 22, no. 2 (2020): 205. http://dx.doi.org/10.3390/e22020205.

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Photovoltaic (PV) system energy production is non-linear because it is influenced by the random nature of weather conditions. The use of machine learning techniques to model the PV system energy production is recommended since there is no known way to deal well with non-linear data. In order to detect PV system faults, the machine learning models should provide accurate outputs. The aim of this work is to accurately predict the DC energy of six PV strings of a utility-scale PV system and to accurately detect PV string faults by benchmarking the results of four machine learning methodologies kn

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Burhanudin, K., N. A. Kamarzaman, A. A. A. Samat, A. I. Tajudin, S. S. Ramli, and N. Hidayat. "An Improved Photovoltaic Array Configuration for Photovoltaic System in the Presence of Maximum Power Point Tracking during Partial Shading Condition." Indonesian Journal of Electrical Engineering and Computer Science 6, no. 2 (2017): 301. http://dx.doi.org/10.11591/ijeecs.v6.i2.pp301-309.

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Power-Voltage (P-V) curve and Current-Voltage (I-V) curve determine the performance of the PV system. In this work, the arrangements of the PV module were reconstructed by adding the number of PV module in 3 strings configuration from 5 to 45. This method enhance the performance of the PV system as it able to show the characteristic of the P-V and I-V curve during partial shading and maximum irradiance despite higher number of PV panel. This study focuses on improving the PV array configuration and simulation speed of the PV panel. The simulation of small size PV array is possible, but the pro

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Yu, Byunggyu, and Youngseok Jung. "Performance analysis of a residential photovoltaic string under partial shading." International Journal of Electrical and Computer Engineering (IJECE) 13, no. 1 (2023): 85. http://dx.doi.org/10.11591/ijece.v13i1.pp85-93.

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<span lang="EN-US">As one of the most prominent renewable energy resources, Photovoltaic (PV) generation has been growing dramatically over the last years and its applications are classified into residential, commercial, and power plant class, based on its power capacity. Especially, a typical residential PV system has been configured with serially connected PV modules. For serially connected PV modules, shading is a critical factor to reduce the whole string PV output power. This paper presents study on performance analysis of a residential PV string under partial shading. This analysis

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Byunggyu, Yu, and Jung Youngseok. "Performance analysis of a residential photovoltaic string under partial shading." International Journal of Electrical and Computer Engineering (IJECE) 13, no. 1 (2023): 85–93. https://doi.org/10.11591/ijece.v13i1.pp85-93.

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As one of the most prominent renewable energy resources, Photovoltaic (PV) generation has been growing dramatically over the last years and its applications are classified into residential, commercial, and power plant class, based on its power capacity. Especially, a typical residential PV system has been configured with serially connected PV modules. For serially connected PV modules, shading is a critical factor to reduce the whole string PV output power. This paper presents study on performance analysis of a residential PV string under partial shading. This analysis contains how many maximu

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Shin, Woo Gyun, Jong Rok Lim, Gi Hwan Kang, Young Chul Ju, Hye Mi Hwang, and Suk Whan Ko. "Current Flow Analysis of PV Arrays under Voltage Mismatch Conditions and an Inverter Failure." Applied Sciences 9, no. 23 (2019): 5163. http://dx.doi.org/10.3390/app9235163.

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In PV (Photovoltaic) systems, the PV array is a structure in which many PV strings are connected in parallel. The voltage mismatch between PV strings, in which PV modules are connected in a series, occurs due to a voltage decrease in some modules. In this paper, research on the electrical characteristics of PV arrays due to a voltage mismatch was conducted. Considering the voltage mismatch, experiments on partial shading, the non-uniformity of irradiance, and the failure of bypass diodes were conducted on the PV module level. It was confirmed that the open-circuit voltage greatly decreased due

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Dhimish, Mahmoud, and Ghadeer Badran. "Field Study of Photovoltaic Systems with Anti-Potential-Induced-Degradation Mechanism: UVF, EL, and Performance Ratio Investigations." Photonics 10, no. 2 (2023): 225. http://dx.doi.org/10.3390/photonics10020225.

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The potential-induced degradation (PID) of photovoltaic (PV) modules is one of the most extreme types of degradation in PV modules, where PID-affected modules can result in an almost 25% power reduction. Understanding how module defects impact PID is key to reducing the issue. Therefore, this work investigates the impact of an anti-PID inverter on PV modules throughout three years of field operating conditions. We used electroluminescence (EL), ultraviolet fluorescence (UVF), and thermography imaging to explore the varieties of an anti-PID inverter connected to a PV string. It was discovered t

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Rivai, Ahmad, Nasrudin Abd Rahim, Mohamad Fathi Mohamad Elias, and Jafferi Jamaludin. "Analysis of Photovoltaic String Failure and Health Monitoring with Module Fault Identification." Energies 13, no. 1 (2019): 100. http://dx.doi.org/10.3390/en13010100.

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In this paper, photovoltaic (PV) string failure analysis and health monitoring of PV modules based on a low-cost self-powered wireless sensor network (WSN) are presented. Simple and effective fault detection and diagnosis method based on the real-time operating voltage of PV modules is proposed. The proposed method is verified using the developed health monitoring system which is installed in a grid-connected PV system. Each of the PV modules is monitored via WSN to detect any individual faulty module. The analysis of PV string failure includes several electrical fault scenarios and their impa

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Bae, Jaesung, Hongsub Jee, Yongseob Park, and Jaehyeong Lee. "Simulation-Based Shading Loss Analysis of a Shingled String for High-Density Photovoltaic Modules." Applied Sciences 11, no. 23 (2021): 11257. http://dx.doi.org/10.3390/app112311257.

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Shingled photovoltaic (PV) modules with increased output have attracted growing interest compared to conventional PV modules. However, the area per unit solar cell of shingled PV modules is smaller because these modules are manufactured by dividing and bonding solar cells, which means that shingled PV modules can easily have inferior shading characteristics. Therefore, analysis of the extent to which the shadow affects the output loss is essential, and the circuit needs to be designed accordingly. In this study, the loss resulting from the shading of the shingled string used to manufacture the

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Sabah Muttashar, Halah, and Amina Mahmoud Shakir. "Enhancing PV Fault Detection Using Machine Learning: Insights from a Simulated PV System." Iraqi Journal for Electrical and Electronic Engineering 21, no. 1 (2024): 126–33. https://doi.org/10.37917/ijeee.21.1.12.

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Recently, numerous researches have emphasized the importance of professional inspection and repair in case of suspected faults in Photovoltaic (PV) systems. By leveraging electrical and environmental features, many machine learning models can provide valuable insights into the operational status of PV systems. In this study, different machine learning models for PV fault detection using a simulated 0.25 MW PV power system were developed and evaluated. The training and testing datasets encompassed normal operation and various fault scenarios, including string-to-string, on-string, and string-to

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Forcan, Miodrag. "Prediction of annual energy production from PV string under mismatch condition due to long-term degradation." Facta universitatis - series: Electronics and Energetics 31, no. 1 (2018): 63–74. http://dx.doi.org/10.2298/fuee1801063f.

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Reduction of long-term degradation effects represents a long-time challenge in photovoltaic (PV) manufacturing industry. Modelling of long-term degradation types and their impact on maximum power of PV systems have been analysed in this article. Brief guidelines for PV cell-based modelling of PV systems have been illustrated. Special study case, PV string consisting of 12 PV modules, has been modelled in order to determine degradation and mismatch power losses. Modified methodology for prediction of annual energy production from PV string, based on horizontal irradiation and ambient temperatur

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Sabithakumari, J., A. Suresh, and G. Vijayakumari. "Operation of PV Cells with Two-String Maximum Power Point Trackers Using DC Distribution." Asian Journal of Science and Applied Technology 3, no. 1 (2014): 32–35. http://dx.doi.org/10.51983/ajsat-2014.3.1.783.

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This paper presents operational control of two maximum power point trackers(MPPTs) for two-string photovoltaic (PV) panels in dc distribution systems. Two PV strings and two MPPTs are implemented in this system. The proposed MPPT topology consists of buck and boost converters to deal with wide output voltage range of PV panels. The current balancing of two MPPT modules in parallel is achieved. In this paper, the system configuration and the operational principle of the proposed MPPT are first introduced. Flowcharts of the online PV-string configuration check and current balancing are explained

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Park, Hyeonwook, Sungho Chang, Sanghwan Park, and Woo Kyoung Kim. "Outdoor Performance Test of Bifacial n-Type Silicon Photovoltaic Modules." Sustainability 11, no. 22 (2019): 6234. http://dx.doi.org/10.3390/su11226234.

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The outdoor performance of n-type bifacial Si photovoltaic (PV) modules and string systems was evaluated for two different albedo (ground reflection) conditions, i.e., 21% and 79%. Both monofacial and bifacial silicon PV modules were prepared using n-type bifacial Si passivated emitter rear totally diffused cells with multi-wire busbar incorporated with a white and transparent back-sheet, respectively. In the first set of tests, the power production of the bifacial PV string system was compared with the monofacial PV string system installed on a grey concrete floor with an albedo of ~21% for a

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Singh, Deepa, and Laxman Solankee. "MACHINE LEARNING BASED FAULT DIAGNOSIS SCHEME FOR GRID-CONNECTED PV SYSTEM." INTERNATIONAL RESEARCH JOURNAL OF ENGINEERING & APPLIED SCIENCES 9, no. 4 (2021): 25–30. http://dx.doi.org/10.55083/irjeas.2021.v09i04007.

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Photovoltaic (PV) systems have recieved a lot of attention in recent decades due to their accessibility and advancements in PV technology. The protection of PV systems from faults such as String to String (SS), String to Ground (SG), Open circuit (OC), and partial shading are the key challenges to the realization of cost-effective and environmentally friendly PV systems. Such unusual circumstances reduce the maximum available PV power. Partial shading and breakdowns in a PV array must therefore be noticed quickly for enhanced system efficiency and reliability. The significant fault current in

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Premkumar, Manoharan, Chandrasekaran Kumar, and Ravichandran Sowmya. "Mathematical Modelling of Solar Photovoltaic Cell/Panel/Array based on the Physical Parameters from the Manufacturer’s Datasheet." International Journal of Renewable Energy Development 9, no. 1 (2020): 7–22. http://dx.doi.org/10.14710/ijred.9.1.7-22.

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This paper discusses a modified V-I relationship for the solar photovoltaic (PV) single diode based equivalent model. The model is derived from an equivalent circuit of the PV cell. A PV cell is used to convert the solar incident light to electrical energy. The PV module is derived from the group of series connected PV cells and PV array, or PV string is formed by connecting the group of series and parallel connected PV panels. The model proposed in this paper is applicable for both series and parallel connected PV string/array systems. Initially, the V-I characteristics are derived for a sing

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Dong, Mengyang, and Qi Wang. "Comparative Analysis and Outlook of Centralized, String, and Micro Photovoltaic Inverters in Power Generation Systems." Highlights in Science, Engineering and Technology 119 (December 11, 2024): 137–46. https://doi.org/10.54097/8dw8nd13.

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With the rise of renewable energy, optimizing photovoltaic (PV) inverter topologies—centralized, string, and micro inverters—is crucial for enhancing solar power efficiency and reliability in modern power systems. This paper introduces the classification of photovoltaic inverters into centralized, string, and micro inverter. It also introduces the respective topologies and working principles, analyzes the efficiency of the three topologies in the power system, the centralized inverter is affected by natural and equipment factors, the device of string inverter is easy to lose, and affects the i

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Mohd Hussain, Mohd Najib, Ahmad Maliki Omar, and Intan Rahayu Ibrahim. "Harvesting Maximum Power from Mismatch Module of PV System Using PO Buck-Boost Converter." Advanced Materials Research 953-954 (June 2014): 95–98. http://dx.doi.org/10.4028/www.scientific.net/amr.953-954.95.

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This paper presents a simulation and laboratory test of Photovoltaic (PV) module incorporated with Positive Output (PO) Buck-Boost Converter for harnessing maximum energy from the solar PV module. The main intention is to invent a system which can harvest maximum power point (MPP) energy of the PV system in string-connection. The model-based design of the controller and maximum power point tracking (MPPT) algorithm for the system were implemented using MATLAB SIMULINK software. For laboratory execution, the digital microcontroller of dsPIC30F digital signal controller (DSC) was used to control

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Medyakov, Andrey A., Denis M. Lastochkin, and Aleksey P. Ostashenkov. "Improving a no-failure operation of a PV systems with grid inverters for agricultural regions." E3S Web of Conferences 390 (2023): 06006. http://dx.doi.org/10.1051/e3sconf/202339006006.

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The growing interest to the use of power generating complexes based on renewable energy sources has been witnessed recently. It necessitates the need to improve the no-failure operation of such complexes. The highest failure rate is typical for the string inverter in grid-connected PV systems. The failure of the string inverter induces supply termination of electrical energy to the grid. The paper explores an approach to improve the no-failure operation of the process of electrical energy distribution by a PV system to the grid driven by the use of micro inverters. The authors used the logical

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Sitthiphol, Nopphadol, Chatchai Sirisamphanwong, Nipon Ketjoy, and Kobsak Sriprapha. "The Study of Decrement in Insulation Resistance of PV String and its Effects on PV System Degradation." Key Engineering Materials 675-676 (January 2016): 734–38. http://dx.doi.org/10.4028/www.scientific.net/kem.675-676.734.

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This paper presents the investigated variations in insulation resistances of amorphous silicon (a-Si), multi crystalline silicon (MC-Si) and hybrid solar cell (HIT). The insulation resistance of PV string of each system was measured and used to represent leakage current in photovoltaic system and the analysis was done in accordance with IEC 61215 Standard. The 10.152 kW multi-PV cell technologies grid connected system supports the energy demand of the 10 kW Building at School of Renewable Energy Technology (SERT), Naresuan University since July 2005 till date. In general the system was found e

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Mamodiya, Udit, and Neeraj Tiwari. "Dynamic Monitoring and Analysis of Dual-Axis movement of SPV Power Plant Parameters under various Atmospheric Conditions." Innovations and Trends in role of Electrical, and Electronics Engineering in IT Revolution: Bridging the Digital Frontier 12, BDF (2024): 12–18. http://dx.doi.org/10.37391/ijeer.12bdf03.

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This research paper presents comprehensive insight into the testing of a 1 KW sun tracking photovoltaic (PV) performance. The study uses a state-of-the-art real-time string monitoring system to allow this analysis while covering an extensive variety of atmospheric conditions. The design of the 1 KW solar tracker system incorporates a tracking sensor circuit, motor driver circuit, string monitoring system, and solar tracker control circuit. Solar tracking systems boost energy generation by adjusting the angle of PV panels to optimum sunlight exposure. The effectiveness of such devices can, howe

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Ricco Galluzzo, Fabio, Pier Enrico Zani, Marina Foti, Andrea Canino, Cosimo Gerardi, and Salvatore Lombardo. "Numerical Modeling of Bifacial PV String Performance: Perimeter Effect and Influence of Uniaxial Solar Trackers." Energies 13, no. 4 (2020): 869. http://dx.doi.org/10.3390/en13040869.

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The bifacial photovoltaic (PV) systems have recently met large interest. The performance of such systems heavily depends on the installation conditions and, in particular, on the albedo radiation collected by the module rear side. Therefore, it is of crucial importance to have an accurate performance model. To date, in the scientific literature, numerous models have been proposed and experimental data collected to study and optimize bifacial PV system performance. Currently, 3D and 2D models of bifacial PV devices exist. Though the former are more mathematically complex, they can lead to more

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Nielsen-Gammon, John W., and David A. Gold. "Potential Vorticity Diagnosis of the Severe Convective Regime. Part II: The Impact of Idealized PV Anomalies." Monthly Weather Review 136, no. 5 (2008): 1582–92. http://dx.doi.org/10.1175/2007mwr2091.1.

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Abstract Idealized numerical experiments are conducted to understand the effect of upper-tropospheric potential vorticity (PV) anomalies on an environment conducive to severe weather. Anomalies are specified as a single isolated vortex, a string of vortices analogous to a negatively tilted trough, and a pair of string vortices analogous to a position error in a negatively tilted trough. The anomalies are placed adjacent to the tropopause along a strong upper-level jet at a time just prior to a major tornado outbreak and inverted using the nonlinear balance equations. In addition to the expecte

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Muhammad, Nurmalessa, Nor Zaini Ikrom Zakaria, Sulaiman Shaari, and Ahmad Maliki Omar. "Threshold value of DC array current and DC string voltage for fault detection in grid-connected photovoltaic system." Scientific Research Journal 17, no. 1 (2020): 1. http://dx.doi.org/10.24191/srj.v17i1.6314.

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The failure detection in a grid-connected photovoltaic (PV) system has become an important aspect of solving the issue of the reduced energy output in the PV system. One of the methods in detecting failure is by using the threshold-based method to compute the ratio of actual and predicted DC array current and DC string voltage value. This value will be applied in the failure detection algorithm by using power loss analysis and may reduce the time, cost and labour needed to measure the quality of the energy output of the PV system. This study presented the threshold value of DC array current an

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Abdelkareem Yagoub, Marwa, Ahmed A. Elserougi, and Tamer H. Abdelhamid. "Closed-loop string current control for string optimizer circuits-based PV system to enhance extracted PV power during partial shading conditions." Alexandria Engineering Journal 61, no. 12 (2022): 11159–70. http://dx.doi.org/10.1016/j.aej.2022.04.038.

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Kumpanalaisatit, M., A. Jankasorn, W. Setthapun, H. Sintuya, and SN Jansri. "The effect of space utilization under the ground-mounted solar farm on power generation." AJARCDE | Asian Journal of Applied Research for Community Development and Empowerment 3, no. 1 (2019): 14–16. http://dx.doi.org/10.29165/ajarcde.v3i1.15.

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The ground-mounted solar farms are the most common type of Thailand solar power plant. Presently, the area under the solar panels in Thailand had not been utilized. This work was to investigate a suitable configuration for space utilization under the PV panels which could promote power production. The effect of space utilization was investigated for 3 configurations: a water pond, chili cultivation, and a grass plantation. Under the first PV string, the pond sizing 2.4 × 15 meter was created. Under the 2nd PV string, 60 chilies samples were planted. Moreover, the grass was planted under the th

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Gokmen, Nuri, Engin Karatepe, Berk Celik, and Santiago Silvestre. "Simple diagnostic approach for determining of faulted PV modules in string based PV arrays." Solar Energy 86, no. 11 (2012): 3364–77. http://dx.doi.org/10.1016/j.solener.2012.09.007.

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Phiouthonekham, Santisouk, Anucha Lekkruasuwan, and Surachai Chaitusaney. "The Impact Mitigation of Partial Shading on PV Array Power Generation." Applied Mechanics and Materials 781 (August 2015): 267–71. http://dx.doi.org/10.4028/www.scientific.net/amm.781.267.

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The impact of partial shading on photovoltaic (PV) array is discussed in this paper. The partial shading on PV array can significantly decrease the power generation of PV array. This study examines the modeling of PV module which relates with solar irradiation, temperature, and shading pattern. There are different shading patterns on PV array, such as one-string shading, two-strings shading, and much more. The characteristics of current-voltage (I-V) and voltage-power (V-P) curves for each individual the PV array can be different dependent on the multiple MPPs, maximum power points (MPPs). The

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Ahmed, Waqas, Aamir Hanif, Karam Dad Kallu, Abbas Z. Kouzani, Muhammad Umair Ali, and Amad Zafar. "Photovoltaic Panels Classification Using Isolated and Transfer Learned Deep Neural Models Using Infrared Thermographic Images." Sensors 21, no. 16 (2021): 5668. http://dx.doi.org/10.3390/s21165668.

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Defective PV panels reduce the efficiency of the whole PV string, causing loss of investment by decreasing its efficiency and lifetime. In this study, firstly, an isolated convolution neural model (ICNM) was prepared from scratch to classify the infrared images of PV panels based on their health, i.e., healthy, hotspot, and faulty. The ICNM occupies the least memory, and it also has the simplest architecture, lowest execution time, and an accuracy of 96% compared to transfer learned pre-trained ShuffleNet, GoogleNet, and SqueezeNet models. Afterward, ICNM, based on its advantages, is reused th

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Murkute, Subhash, and Vandana Abhay Kulkarni (Deodhar). "Novel differential power processing technique for uneven partial shading mitigation in PV systems." International Journal of Applied Power Engineering (IJAPE) 13, no. 1 (2024): 1. http://dx.doi.org/10.11591/ijape.v13.i1.pp1-10.

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Photovoltaic (PV) system output power greatly depends on environmental operating conditions. Partial shaded condition (PSC) operates PV string under mismatch. PV module mismatch has been one of the major causes for reduced amount of output power. Maximizing the amount of energy extraction from PV system under mismatch greatly influenced by conversion efficiency as well as the mismatch mitigation topology used. Differential power processing (DPP) is one of the advanced techniques to deal with mismatch conditions and enhance power output from a PV system. In this paper hybrid modular DPP topolog

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Murkute, Subhash, and (Deodhar) Vandana Abhay Kulkarni. "Novel differential power processing technique for uneven partial shading mitigation in PV systems." International Journal of Applied Power Engineering (IJAPE) 13, no. 1 (2023): 1–10. https://doi.org/10.11591/ijape.v13.i1.pp1-10.

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Photovoltaic (PV) system output power greatly depends on environmental operating conditions. Partial shaded condition (PSC) operates PV string under mismatch. PV module mismatch has been one of the major causes for reduced amount of output power. Maximizing the amount of energy extraction from PV system under mismatch greatly influenced by conversion efficiency as well as the mismatch mitigation topology used. Differential power processing (DPP) is one of the advanced techniques to deal with mismatch conditions and enhance power output from a PV system. In this paper hybrid modular DPP topolog

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Raghav, Rashmi, Alok Prakash Mittal, and Bhavnesh Kumar. "Comparative Study of Voltage Equalizing Circuits for Photovoltaic String." IOP Conference Series: Earth and Environmental Science 1285, no. 1 (2024): 012004. http://dx.doi.org/10.1088/1755-1315/1285/1/012004.

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Abstract Partial shading is one of the inevitable condition that photovoltaic (PV) strings encounter. When photovoltaic strings are partially shaded, numerous peaks appear on their power versus voltage (P-V) characteristic curve, significantly reducing their ability to deliver power. This paper presents, three power electronics topologies that permit voltage equalization by charge redistribution between the PV modules wired in series. Three popular topologies, namely; switched-capacitor (SC), Buck-boost switched capacitor (BBSC) and PWM with switched capacitor (SC-PWM) converters have been exa

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Jayaudhaya, J., K. Ramash Kumar, V. Tamil Selvi, and N. Padmavathi. "Improved Performance Analysis of PV Array Model Using Flower Pollination Algorithm and Gray Wolf Optimization Algorithm." Mathematical Problems in Engineering 2022 (August 5, 2022): 1–17. http://dx.doi.org/10.1155/2022/5803771.

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The efficiency of a photovoltaic (PV) system under partial shading conditions (PSCs) is primarily determined by how the PV panels are connected to the load. Various PV system architectures have been developed to improve power processing capability and thus power conversion efficiency. In this article, a central and string architecture are considered, and the performance characteristics are obtained using optimization techniques such as gray wolf optimization (GWO) and flower pollination algorithm (FPA) in MATLAB/Simulink. The simulation results show that the performance characteristics of stri

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Sitthiphol, Nopphadol, Chatchai Sirisamphanwong, Nipon Ketjoy, and Kobsak Sriprapha. "Insulation Resistance and Leakage Current in PV Modules and Strings with Different Grounding Configurations." Applied Mechanics and Materials 839 (June 2016): 114–18. http://dx.doi.org/10.4028/www.scientific.net/amm.839.114.

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Thailand is located in the tropical zone dominated by monsoons for more than six months in a year. These climatic conditions illustrate elevated relative humidity and temperature that contributes to Potential Induced Degradation (PID). Humidity has been reported to be potential cause of degradation in the systems with high voltages. Moisture helps leakage currents in passing through laminate permeation and back sheet from cell to ground frame. The PID occure in PV systems when connected in series using DC voltages of high orders. This research shows comparisons of both PV systems, with negativ

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Mohd Hussain, Mohd Najib, Irfanudin Nor Anwar, Mashitah Mohd Hussain, Nor Adni Mat Leh, and Intan Rahayu Ibrahim. "Implementation of String Inverters for 50 MW Large Scale Solar Power Plant in Malaysia." ESTEEM Academic Journal 19, September (2023): 118–28. http://dx.doi.org/10.24191/esteem.v19iseptember.21214.

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The growth of large-scale solar photovoltaic (LSSPV) power plant site development in Malaysia has increased the demand for the reliability and potentiality of the system in achieving efficient monitoring, operation, and maintenance for the plants. A configuration of string inverters is applied in a 50 MW large-scale solar photovoltaic installation because of its flexibility and scalable technological advancements. This installation demonstrates that the plant can optimise the power output and monitor the performance of the system up to the string level with a cost-efficient implementation. The

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Zhu, Chao, Ziyu Chen, Chen Quan, Le Dong, and Haoliang Feng. "Research on the photoelectricity mismatch loss of photovoltaic and thermal (PV/T) units connected in series at different temperatures." Journal of Physics: Conference Series 2814, no. 1 (2024): 012010. http://dx.doi.org/10.1088/1742-6596/2814/1/012010.

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Abstract A simulation study was conducted on the mismatch loss caused by temperature differences between photovoltaic and thermal (PV/T) modules connected in series. A calculation method for the IV curve of PV/T modules connected in series was proposed, and an equivalent circuit model of PV/T units was established using Multisim software. Two different temperature zones, three different temperature zones, and four different temperature zones of PV/T units connected in series were separately established. A numerical calculation model based on the Lambert W function was used to study the series

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Oh, WonJe, JiSu Park, Minsoo Kwon, et al. "Analysis of Resistance According to Metal Ribbon Connection for Application to Interconnection of Shingled Photovoltaic Strings." Journal of Nanoscience and Nanotechnology 20, no. 11 (2020): 6992–95. http://dx.doi.org/10.1166/jnn.2020.18836.

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The Shingle Photovoltaic (PV) module is a new high power PV module technology manufactured by ’Dividing and ECA (Electrical Conductivity Adhesive) bonding’ method for solar cell. In the case of a general PV module, a metal ribbon is soldered on the bus bar of the solar cell and connected to others. The dividing/ECA bonding technology connects the divided cells through bonding to manufacture a string. In order to make a module, the fabricated strings must be connected with Bus ribbon. The Shingled strings produced by the dividing and bonding method are not limited to the interconnection method

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Figgis, Benjamin, Veronica Bermudez, and Juan Lopez Garcia. "Effect of cleaning Robot’s moving shadow on PV string." Solar Energy 254 (April 2023): 1–7. http://dx.doi.org/10.1016/j.solener.2023.03.003.

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Celi, Edoardo, Alessandro Minuto, and Gianluca Timò. "Development of an electronic interface for diagnostics of photovoltaic strings." EPJ Photovoltaics 14 (2023): 36. http://dx.doi.org/10.1051/epjpv/2023026.

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Photovoltaic (PV) systems can generate less energy than expected owing to inefficiency of the inverter, deterioration of the PV modules or conditions of partial shading and soiling. The monitoring and diagnosis techniques of PV systems are therefore quite important to recognize the causes of the performances reduction and optimize the PV energy production. For a more in-depth diagnostic capability, it would be necessary to know the short-circuit current (Isc) and the open-circuit voltage (Voc) of the PV system. These quantities are indeed useful to recognize non-uniform operating conditions of

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Zapata, Jaime, Samir Kouro, Gonzalo Carrasco, and Thierry Meynard. "Step-Down Partial Power DC-DC Converters for Two-Stage Photovoltaic String Inverters." Electronics 8, no. 1 (2019): 87. http://dx.doi.org/10.3390/electronics8010087.

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Photovoltaic (PV) systems composed by two energy conversion stages are attractive from an operation point of view. This is because the maximum power point tracking (MPPT) range is extended, due to the voltage decoupling between the PV system and the dc-link. Nevertheless, the additional dc-dc conversion stage increases the volume, cost and power converter losses. Therefore, central inverters based on a single-stage converter, have been a mainstream solution to interface large-scale PV arrays composed of several strings connected in parallel made by the series connections of PV modules. The con

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Verdugo, Cristian, Samir Kouro, Christian A. Rojas, Marcelo A. Perez, Thierry Meynard, and Mariusz Malinowski. "Five-Level T-type Cascade Converter for Rooftop Grid-Connected Photovoltaic Systems." Energies 12, no. 9 (2019): 1743. http://dx.doi.org/10.3390/en12091743.

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Multilevel converters are widely considered to be the most suitable configurations for renewable energy sources. Their high-power quality, efficiency and performance make them interesting for PV applications. In low-power applications such as rooftop grid-connected PV systems, power converters with high efficiency and reliability are required. For this reason, multilevel converters based on parallel and cascaded configurations have been proposed and commercialized in the industry. Motivated by the features of multilevel converters based on cascaded configurations, this work presents the modula

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Mahmood, H. Salman, J. Abid Ahmed, and A. Obed Adel. "Robotic dry cleaner for photovoltaic solar panels: an implemented design that evaluated in iraq's weather." TELKOMNIKA (Telecommunication, Computing, Electronics and Control) 19, no. 6 (2021): 2050–58. https://doi.org/10.12928/telkomnika.v19i6.20505.

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Arabian desert areas are suffered from high mitigation in the produced photovoltaic (PV) power due to high dusty weather. This article presents a robotic cleaner that will significantly reduce the impact of dust on the installed PV systems in these areas. The proposed robotic cleaner is simple, low cost, standalone, self-powered, portable, and connected to the cloud. ESP32 used as a controller that manages the cleaning process and monitors its PV power production, the battery's state of charge, time of the day, and weather conditions. Thanks to the ESP32 features and its ability to connect

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Park, Ji-Su, Won-Je Oh, Jang-Hun Joo, Jun-Sin Yi, Byung-You Hong, and Jae-Hyeong Lee. "Design of High-Power and High-Density Photovoltaic Modules Based on a Shingled Cell String." Journal of Nanoscience and Nanotechnology 20, no. 11 (2020): 6996–7001. http://dx.doi.org/10.1166/jnn.2020.18837.

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Building-integrated photovoltaic (BIPV) arrays, which are installed on the roofs of buildings as part of urban solar power generation, have created a demand for high-power and high-density photovoltaic (PV) modules to produce high-output power in a limited area. In this paper, a high-power PV module using a shingles technology is designed. When the vertical and horizontal dimensions of the module were 201.78 cm × 96.75 cm in the same area as that of the conventional PV module, the number of cell strips reached 390. When six 65-interconnection shingled strings were connected in series, the outp

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Guerriero, Pierluigi, Luigi Piegari, Renato Rizzo, and Santolo Daliento. "Mismatch Based Diagnosis of PV Fields Relying on Monitored String Currents." International Journal of Photoenergy 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/2834685.

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This paper presents a DC side oriented diagnostic method for photovoltaic fields which operates on string currents previously supplied by an appropriate monitoring system. The relevance of the work relies on the definition of an effective and reliable day-by-day target for the power that every string of the field should have produced. The procedure is carried out by comparing the instantaneous power produced by all solar strings having the same orientation and by attributing, as producible power for all of them, the maximum value. As figure of merit, the difference between the maximum allowed

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Jhan, Jia-Zhang, Bo-Hong Li, Hsun-Tsung Chiu, Hong-Chan Chang, and Cheng-Chien Kuo. "A Heuristic Algorithm for Locating Line-to-Line Faults in Photovoltaic Systems." Applied Sciences 15, no. 11 (2025): 6366. https://doi.org/10.3390/app15116366.

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Photovoltaic (PV) systems have experienced rapid global deployment. However, line-to-line short-circuit faults pose serious safety risks and can lead to significant power losses or fire hazards. While existing fault detection methods can identify fault types, they cannot precisely locate fault positions, resulting in time-consuming and costly maintenance. This paper proposes a heuristic algorithm for accurately locating such faults in PV arrays based on module group voltage measurements. The algorithm employs a two-phase approach: fault candidate marking and fault location determination, capab

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Abdul Rozak, Ojak, Rohmat Tri Mulyadi, and Hafidz Nurfadilah. "Analysis The Effect of Solar Radiation on The Efficiency of PV Plant 50 kWp Rooftop UNPAM Viktor." Journal of Renewable Energy and Mechanics 6, no. 02 (2023): 63–76. http://dx.doi.org/10.25299/rem.2023.vol6.no02.12181.

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The potential for solar energy in indonesia which is a tropical country is very large with an insolation of around 4.5 Kwh/m2/day. Solar energy in the form of radiation waves will affect the power generated by solar panels and the efficiency of solar panels in generating power. This study was conducted at PV plant pamulang university which has a total of 108 panels with 6 strings and 18 panels in each string. The data in this study were taken per string to see the difference of efficiency in each string. The main problem of this study is to find out how much power and efficiency generated by P

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Alexandru, Cătălin. "Dynamic Simulation in Mechatronic Concept of a Photovoltaic String Equipped with Solar Tracker." Applied Mechanics and Materials 555 (June 2014): 425–33. http://dx.doi.org/10.4028/www.scientific.net/amm.555.425.

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The work puts forward the dynamic analysis and optimization of a photovoltaic (PV) system equipped with solar tracker. This is a PV string with three modules (panels) arranged in-line, which is oriented (rotated) to follow the Sun from East to West (i.e. the daily motion), the elevation being fixed in an optimal position (corresponding to the implementation area - Braşov). The MBS (Multi-Body Systems) environment ADAMS is used to develop the mechanical device of the tracking system, while the control system is designed by using the DFC (Design for Control) software package MATLAB/Simulink. Th

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Morales-Aragones, José Ignacio, Matthew St Michael Williams, Halleluyah Kupolati, et al. "A Power-Line Communication System Governed by Loop Resonance for Photovoltaic Plant Monitoring." Sensors 22, no. 23 (2022): 9207. http://dx.doi.org/10.3390/s22239207.

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Within this paper, a PLC system that takes advantage of the loop resonance of an entire DC-PV string configured as a circular signal path is developed and implemented. Low cost and extremely simple transceivers intended to be installed within each PV module of a string have been designed and successfully tested. In addition, an anti-saturation coil has been conceived to avoid saturation of the core when the entire DC current of the string flows through it. Bi-directional half-duplex communication was successfully executed with up to a 1 MHz carrier frequency (150 kbps bitrate), using a simple

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Morales-Aragones, José Ignacio, Matthew St. Michael Williams, Halleluyah Kupolati, et al. "A Power-Line Communication System Governed by Loop Resonance for Photovoltaic Plant Monitoring." Sensors 22, no. 23 (2022): 9207. https://doi.org/10.3390/s22239207.

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Within this paper, a PLC system that takes advantage of the loop resonance of an entire DC-PV string configured as a circular signal path is developed and implemented. Low cost and extremely simple transceivers intended to be installed within each PV module of a string have been designed and successfully tested. In addition, an anti-saturation coil has been conceived to avoid saturation of the core when the entire DC current of the string flows through it. Bi-directional half-duplex communication was successfully executed with up to a 1 MHz carrier frequency (150 kbps bitrate), using a simple

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Hazrina, Fadhillah, Purwiyanto Purwiyanto, Naufal Ali, and Syam Widiyanto. "Modification of Polycrystalline PV String for Charging on Electric Scooter." Journal of Power, Energy, and Control 1, no. 1 (2024): 24–35. http://dx.doi.org/10.62777/pec.v1i1.5.

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Electric scooters rely on batteries to power BLDC motors, which are traditionally recharged through the household electricity grid. However, alternatives like solar energy are being explored to reduce dependency on conventional power sources. A challenge arises due to the discrepancy in voltage compatibility between standard solar panels and scooter batteries. Typically, a 36 V scooter battery requires a higher voltage input than the 18 V output of a single solar panel. This requires modifications to align solar cell design with battery voltage requirements. This study implements a PZEM-015 se

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