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[IEEE 2018 2nd IEEE Conference on Energy Internet and Energy System Integration (EI2) - Beijing, China (2018.10.20-2018.10.22)] 2018 2nd IEEE Conference on Energy Internet and Energy System Integration (EI2) - Design and Implementation of Surge Protective Device for Solar Panels
摘要： Researchers for decades have utilized solar radiation as a sustainable renewable energy source. In this regard, Photovoltaic (PV) panels are satisfying the production of green energy and clean power. Frequently, these panels need to install on rooftops outdoor fields for maximum sun light feeding, to electricity. However, such PV systems installations are prone to direct or indirect lightning strikes. Herein, an impulse generator is designed to produce 750 V pulses for low voltage side to test the validity of our proposed surge protective device (SPD) as type-2. Moreover, the impulse generator provides 1.2/50μs and 8/20μs normalized voltage and current pulses, respectively. This approach controls the over-voltage caused by indirect lightening and thus protect solar panel systems. Furthermore, in the design of SPD, different components such as gas-discharge tube, transient voltage suppresser, metal oxide Varistor and Zener diodes are used to manage the impulse voltage at acceptable level. These results further highlighting the validity of implemented hardware.
关键词： MPPT,Photovoltaic panels,smart grid,Indirect lightning,Surge protective device
更新于2025-09-23 15:23:52
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Physical Separation and Beneficiation of End-of-Life Photovoltaic Panel Materials: Utilizing Temperature Swings and Particle Shape
摘要： One of the technical challenges with the recovery of valuable materials from end-of-life (EOL) photovoltaic (PV) modules for recycling is the liberation and separation of the materials. We present a potential method to liberate and separate shredded EOL PV panels for the recovery of Si wafer particles. The backing material is removed by submersion in liquid nitrogen, while the encapsulant is removed by pyrolysis. After pyrolysis, separation of the liberated particles (i.e., Si wafer and glass) is carried out by using particle size and shape with mechanical screening. Using this robust approach, a Si wafer grade of 86% and a recovery of 88% were achieved.
关键词： Recycling,Silicon,Particle shape,Photovoltaic panels,Silicon compounds,Temperature swings
更新于2025-09-23 15:21:01
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Photovoltaic panel cooling by atmospheric water sorptiona??evaporation cycle
摘要： More than 600 GW of photovoltaic panels are currently installed worldwide, with the predicted total capacity increasing very rapidly every year. One essential issue in photovoltaic conversion is the massive heat generation of photovoltaic panels under sunlight, which represents 75–96% of the total absorbed solar energy and thus greatly increases the temperature and decreases the energy efficiency and lifetime of photovoltaic panels. In this report we demonstrate a new and versatile photovoltaic panel cooling strategy that employs a sorption-based atmospheric water harvester as an effective cooling component. The atmospheric water harvester photovoltaic cooling system provides an average cooling power of 295 W m–2 and lowers the temperature of a photovoltaic panel by at least 10 °C under 1.0 kW m–2 solar irradiation in laboratory conditions. It delivered a 13–19% increase in electricity generation in a commercial photovoltaic panel in outdoor field tests conducted in the winter and summer in Saudi Arabia. The atmospheric water harvester based photovoltaic panel cooling strategy has little geographical constraint in terms of its application and has the potential to improve the electricity production of existing and future photovoltaic plants, which can be directly translated into less CO2 emission or less land occupation by photovoltaic panels. As solar power is taking centre stage in the global fight against climate change, atmospheric water harvester based cooling represents an important step toward sustainability.
关键词： atmospheric water harvester,cooling strategy,energy efficiency,sustainability,photovoltaic panels
更新于2025-09-23 15:21:01
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[IEEE 2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) - Riga, Latvia (2019.10.7-2019.10.9)] 2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) - Photovoltaic system application for combined heat and power plant self-consumption needs
摘要： This paper analyzes possibilities to use photovoltaic systems for CHP self-consumption needs. Study was made based on installed photovoltaic system data. The algorithm for hourly analysis of PV system contribution to power plant self-consumption was developed. Economical calculations were made to point out scenarios in which use of PV system for CHP self-consumption is economically feasible.
关键词： photovoltaic panels,CHP self-consumption optimization,solar system NPV,PV
更新于2025-09-23 15:19:57
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Omni-direction PERC solar cells harnessing periodic locally focused light incident through patterned PDMS encapsulation
摘要： Photovoltaic panels based on crystalline Si solar cells are the most widely utilized renewable source of electricity, and there has been a significant effort to produce panels with a higher energy conversion efficiency. Typically, these developments have focused on cell-level device modifications to restrict the recombination of photo-generated charge carriers, and concepts such as back surface field, passivated emitter and rear contact (PERC), interdigitated back contact, and heterojunction with intrinsic thin layer solar cells have been established. Here, we propose quasi-Fermi level control using periodic local focusing of incident light by encapsulation with polydimethylsiloxane to improve the performance of solar cells at the module-level; such improvements can complement cell-level enhancements. Locally focused incident light is used to modify the internal quasi-Fermi level of PERC solar cells owing to the localized photon distribution within the cell. Control of the local focusing conditions induces different quasi-Fermi levels, and therefore results in different efficiency changes. For example, central focusing between fingers enhances the current density with a reduced fill factor, whereas multiple local focusing enhances the fill factor rather than the current density. Here, these effects were explored for various angles of incidence, and the total electrical energy production was increased by 3.6% in comparison to a bare cell. This increase is significant as conventional ethylene vinyl acetate-based encapsulation reduces the efficiency as short-wavelength light is attenuated. However, this implies that additional module-scale studies are required to optimize local focusing methods and their synergy with device-level modifications to produce advanced photovoltaics.
关键词： quasi-Fermi level control,module-level enhancements,energy conversion efficiency,Photovoltaic panels,crystalline Si solar cells,local focusing,polydimethylsiloxane,PERC solar cells
更新于2025-09-23 15:19:57
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Intelligent photovoltaic panels based on solar tracking
摘要： The transformation of solar energy into electricity using photovoltaic cells has many economic and environmental benefits. As this technology reduces dependence on non-renewable energy sources, many developed and developing countries near the equator are increasingly willing to adopt such energy generation techniques. Its tilt angle with the horizontal plane and its orientation determines the photovoltaic panel (PV) yield. Thus the solar energy obtained from traditional photovoltaic panels can be maximized by replacing them with Intelligent photovoltaic panels. The Intelligent Photovoltaic panels adjust its orientation as well as tilt angle automatically with changing sun direction to receive maximum possible solar energy on its surface. A handful of studies on the orientation of tilt angle and its optimization have been conducted to improve the yield of photovoltaic panels; however, no solution has been proposed to estimate the optimum value of the parameters based on real-time monitoring.
关键词： Solar Radiations,Optimum Tilt Angle and Orientation,PV system performance,Real-time monitoring,Solar Energy,Intelligent Photovoltaic Panels
更新于2025-09-19 17:13:59
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Performance of photovoltaic canarian greenhouse: A comparison study between summer and winter seasons
摘要： A large-scale use of the renewable energy in agriculture has become an optimal way to successfully deal with the issues of sustainability and climate change. Recently, the integration of solar panels on the roof of the greenhouse gave birth to a new crop production system called photovoltaic greenhouse. In this paper, we investigated the shading effect of the flexible photovoltaic panels, mounted on the greenhouse roof area in the checkerboard format, on the microclimate and the tomatoes yield during the summer and winter period. This study was undertaken in a two tomato canarian greenhouses, typical of the south Mediterranean region. The results of our study showed that the photovoltaic panels covering 40% roof area of the canary type greenhouse does not have a significant effect on the climatic parameters. Additionally, during the hot period, the photovoltaic panels reduced the temperature inside the greenhouse and sometimes falling in the optimum range for the tomatoes growth. Furthermore, this occupancy rate of the photovoltaic panels does not have a significant effect on the overall yield of tomatoes.
关键词： Shading,Flexible photovoltaic panels,South Mediterranean area,Tomatoes,Renewable energy,Microclimate
更新于2025-09-19 17:13:59
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Parameters identification of photovoltaic cell models using enhanced exploratory salp chains-based approach
摘要： The integration of photovoltaic systems (PVSs) in future power systems grows into a more attractive choice. Thus, the studies related to PVSs operation have gained immense interest. Particularly, research in identifying PV cell model parameters remains an agile field because of the non-linearity of PV cell characteristics and its wide dependency on meteorological conditions of irradiation level and temperature. This paper proposes an Opposition-based Learning Modified Salp Swarm Algorithm (OLMSSA) for accurate identification of the two-diode model parameters of the electrical equivalent circuit of the PV cell/module. Six metaheuristic algorithms, including the recently released basic algorithm SSA, used with the benchmark test PV model of the double diode, and a practical PV module, are employed to assess the performance of OLMSSA. The experimental results and the in-depth comparative study clearly demonstrate that OLMSSA is highly competitive and even significantly better than the reported results of the majority of recently-developed parameter identification methods.
关键词： Metaheuristic Optimizer,Two-diode model,I-V characteristics,Parameters extraction,Photovoltaic panels,Salp Swarm Algorithm
更新于2025-09-19 17:13:59
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[IEEE 2019 IEEE PES Innovative Smart Grid Technologies Conference - Latin America (ISGT Latin America) - Gramado, Brazil (2019.9.15-2019.9.18)] 2019 IEEE PES Innovative Smart Grid Technologies Conference - Latin America (ISGT Latin America) - Design of photovoltaic systems on virtual learning platform
摘要： This article presents the development of a virtual learning platform for the design of solar photovoltaic systems. The work carried out involves the inclusion of mathematical models of solar radiation, photovoltaic panels, regulators, batteries and inverters that are integrated to offer a virtual component operation that intervenes in a system for obtaining electrical energy from the solar source. The virtual environment was implemented using the possibilities offered by a graphic programming environment, to facilitate the learning of the design parameters of solar photovoltaic systems.
关键词： Mainel and meinel model,modeling of photovoltaic panels,Design of photovoltaic systems
更新于2025-09-16 10:30:52
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Implementing Blockchain Technology in Irrigation Systems That Integrate Photovoltaic Energy Generation Systems
摘要： Traditionally, the energy industry has been slow in adopting new disruptive technologies and the transition to a new energy market will require a new digital transformation plan, involving all parties from the energy market. Although it now seems to be an impossible and hard-to-accept scenario, especially by the big players in the industry, the pilot projects so far demonstrate that blockchain can play a major role in the future energy market, even if the technology is still in the first stages of the adoption life cycle. This article attempts to describe a solution to provide alternative irrigation systems for small farmers. The solution involves creating associations of small farmers that will use green energy from photovoltaic panels for the irrigation of agricultural lands. The efficiency of the proposed system can be monitored not only through digital hardware connected to photovoltaic panels and water pumps, but also by using the new blockchain technology that stimulates innovation and growth in the energy and a high level of automation though smart contracts. To accelerate the transition to the green energy economy, a SolarCoin version similar to the Bitcoin cryptocurrency has also been proposed, which is a utility token that creates new possibilities for energy and water trading.
关键词： SCADA,blockchain,floating photovoltaic panels,irrigation system,photovoltaic water pumping systems (PWPS),SolarCoin
更新于2025-09-16 10:30:52