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[IEEE 2018 International conference on computation of power, energy, Information and Communication (ICCPEIC) - Chennai, India (2018.3.28-2018.3.29)] 2018 Internat2018 International Conference on Computation of Power, Energy, Information and Communication (ICCPEIC)ional conference on computation of power, energy, Information and Communication (ICCPEIC) - Modified SEPIC Converter Based PV Inverter for Power Quality Improvement
摘要： Now a day the photovoltaic (PV) age is continuously notable, while require significantly more high-control quality. One PV generator providing to nonlinear burdens is wanted to be consolidated with a limit as an Active Power Filter (APF). In our errand, a three-arrange three-wire system, including a bare essential PV generator, modified single completed fundamental inductor converter (M-SEPIC) for high voltage change is sketched out. Furthermore, to separate greatest radiation control a most extreme power point following, calculation is utilized. Here a dc/air conditioning molding voltage source converter to go about as an Active power channel (APF), is proposed. The incite control speculation is utilized to design the PV-APF controller, which shows tried and true displays. Space vector direction (SVM) control system is used as a piece of the PV-APF controller for better execution.
关键词： instantaneous power theory,Active power filter (APF),renewable energy,photovoltaic (PV),quality of power
更新于2025-09-09 09:28:46
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Biosynthetic Transition Metal Chalcogenide Semiconductor Nanoparticles: Progress in Synthesis, Property Control and Applications
摘要： Transition metal (TM) chalcogenides are a group of semiconductor materials with applications that range from antibacterial particles to thin films in energy conversion devices. Significant progress in synthetic biology combined with the benefits of low energy consumption and low toxic waste burden of “green synthesis,” have directed considerable research attention to the biosynthesis of these inorganic materials. TM chalcogenide nanoparticles (NP) can be produced by a variety of microorganisms including bacteria, fungi, algae, and yeast, as well as cell-free approaches using enzymes. Recent research shows that the size, crystal structure, and bandgap of these TM NPs can be well controlled, which has led to prototypical applications of these biosynthetic NPs in the areas of bio-remediation, bio-imaging, photocatalysis, and energy conversion. This review is the first to combine recent progress in the biosynthesis, property control, and applications of TM chalcogenide NPs.
关键词： photovoltaic,fluorescence,antibacterial,bioimaging,photoelectrochemistry,photocatalytic
更新于2025-09-09 09:28:46
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[ASME ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems - Colorado Springs, Colorado, USA (Monday 21 September 2015)] Volume 2: Integrated System Design and Implementation; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting - A Sub-Surface Model of Solar Power for Distributed Marine Sensor Systems
摘要： The capabilities of distributed sensor systems, such as wildlife telemetry tags, could be significantly enhanced through the application of energy harvesting. For animal telemetry systems, supplemental energy would allow for longer tag deployments, wherein more data could be collected, enhancing our temporal and spatial comprehension of the hosts activities and/or environments. There are various transduction methods that could be employed for energy harvesting in aquatic environments. Photovoltaic elements have not been widely deployed in the sub-surface marine environments despite a significant potential. In addition to wildlife telemetry systems, photovoltaic energy harvesting systems could also serve as a means of energy supply for Autonomous Underwater Vehicles (AUVs), as well as submersible buoys for oceanographic data collection. Until now, the use of photovoltaic cells for underwater energy harvesting has generally been disregarded as a viable energy source in this arena, with only one company currently offering solar modules integrated with marine telemetry tags. In this article, we develop a model of power available from photovoltaic cells deployed in a sub-surface marine environment. We cover the methods and tools used to estimate solar energy at depth, including the effects of: latitude and longitude, reflected solar energy off of the oceans surface, solar irradiance lost due to the absorption and turbidity of the sea water, cloud cover, etc. We present the availability of this solar energy source in the context of the energy requirements of some of these sensor systems, such as marine bio-loggers. Additionally, we apply our model to simulate the energy harvested on specific marine species in which high fidelity depth information is known. We also apply our model to simulate solar cells at certain depths under the ocean to gain a general understanding of the solar energy available at these depths.
关键词： sub-surface marine environment,photovoltaic cells,marine telemetry,solar energy,energy harvesting
更新于2025-09-09 09:28:46
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[IEEE 2018 34th International Conference on Lightning Protection (ICLP) - Rzeszow (2018.9.2-2018.9.7)] 2018 34th International Conference on Lightning Protection (ICLP) - On In Situ Lightning Current Impulse Testing in a Large Free Field PV Plant
摘要： Lightning ground potential rise (GPR) was shown to be a significant contributor to equipment damage under certain conditions that include, in particular, high soil resistivity. In addition, IEEE Std 1692 suggested that surge protective devices (SPDs) may not protect adequately under conditions of lightning GPR. This paper follows on earlier work that addressed lightning GPR associated with large electrodes, loss of equipotential under conditions of GPR and a desk-top study on the behavior of a low voltage SPD under emulated lightning impulse conditions. The findings of a laboratory test on the behavior of an SPD under lightning current impulse conditions as well as in situ testing of an SPD under lightning current impulse are presented in this paper. The paper concludes by reflecting on initial findings from post-test monitoring under actual lightning, emphasizes the value of in situ testing and points out its limitations.
关键词： current,lightning,free field,in situ,plant,test,photovoltaic,impulse
更新于2025-09-09 09:28:46
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Pyrite FeS2 nanostructures: Synthesis, properties and applications
摘要： Nanostructured metal sul?des have been widely studied due to their unique electrical, chemical, magnetic and optical properties and the promising application prospects. Pyrite iron disul?de (FeS2) receives high attention because of its suitable band gap, exceptionally high optical absorption coe?cient in the visible region and the advantages of earth abundance, nontoxicity and low fabrication cost. It exhibits promising applications in photovoltaics, rechargeable batteries, dye-sensitized solar cells, photodetectors, photocapacitors and photo-catalysis. This paper provides a comprehensive review of the FeS2 nanostructures, including the preparation methods, properties and applications. We begin from a short background of FeS2, describing the structure, fundamental physical, chemical and electronic properties. Then a detailed investigation of FeS2 nanostructures with di?erent shapes and the corresponding methods are described. Finally, the application prospects of FeS2 nanostructures in plentiful novel devices are introduced.
关键词： Rechargeable batteries,FeS2,Nanostructure,Photovoltaic,Synthesis
更新于2025-09-09 09:28:46
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Analysis of the Potential of Solar Energy Development inSaudi Arabia
摘要： Saudi Arabia has been exploring the potential of renewable energy for many years. Saudi authorities, scientists, and researchers view the generation of renewable energy as a viable long-term energy strategy. Despite this, because Saudi Arabia is one of the leading oil producing nations and relies heavily on it as a form of energy and source of income, solar energy has not been given much serious consideration. However, it has become more and more evident that for the continuing prosperity of the nation and the inevitable gradual decline in long-term oil production, it is essential to explore and invest in alternative energy sources. The main objectives of this research are: i) to establish the potential of solar energy generation as a suitable, cost-effective alternative to petroleum products. ii) to establish the potential for maximizing renewable power generation to support the supply grid. This paper presents an examination of various economic and technological aspects of generating solar energy in Saudi Arabia. Using some existing data on the amount of solar radiation, a seasonal multiple linear forecasting method is used to generate forecasts for electric energy generation potential for 32 cities. Results of this research demonstrate the desirability and economic feasibility of installing solar panel farms and constructing distribution lines.
关键词： Quantitative Forecasting,Photovoltaic Generator,Renewable energy,Levelized Cost of Electricity (LCOE) generation model
更新于2025-09-09 09:28:46
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Combined Tracking of the Maximum Power and Maximum Efficiency Operating Points for Real-Time Maximization of the Energy Production of PV Systems
摘要： The power production of a PV system can be maximized by applying a global MPPT method for ensuring that the PV array operates at the global MPP where its power production is maximized and, simultaneously, by dynamically maximizing the efficiency of the power converter that interfaces the PV-generated energy to the energy storage devices or the electric grid. In this paper, a new control method has been presented for the real-time maximization of the power production of PV systems by modifying in real-time the duty cycle and switching frequency of the power converter PWM control signal. The proposed method has the advantage that it can be applied in PV systems operating under partial shading conditions. Also, knowledge of either the operational characteristics and configuration of the PV modules within the PV array, or the power converter operational characteristics, is not required for its application. The experimental results validated that, by using the proposed method, the power production of the PV system is increased significantly compared to the case that only the power production of the PV array is maximized by using a global MPPT technique without tracking the optimal value of the power converter efficiency.
关键词： Power Converter Efficiency,Optimization,Partial shading,Photovoltaic systems,Maximum Power Point Tracking
更新于2025-09-09 09:28:46
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Novel Four-Port DC-DC Converter for Interfacing Solar PV-Fuel Cell Hybrid Sources with Low-Voltage Bipolar DC Microgrids
摘要： Bipolarity in dc microgrids is desirable as it enhances the system reliability and efficiency. However, a bipolar dc microgrid (BDCMG) demands multiple conventional dc-dc converters to feed power to both the poles of the bipolar dc grid. To handle this requirement and to maintain high efficiency, a new four-port, dual-input-dual-output (DIDO) converter topology is proposed for interfacing the solar PV and fuel cell (FC) sources to a low-voltage BDCMG. The proposed topology is unidirectional, efficient, and compact. It has fewer circuit elements with only one inductor as compared to the conventional non-isolated dc-dc converters. The proposed converter regulates one of the pole voltages of the dc bus and also ensures MPPT of the PV source. Further, the converter can be operated as a single-input-dual-output (SIDO) converter. The control complexity of the proposed converter is low as it can be operated in various modes with only one set of controllers. To design the control system for the proposed converter, a small-signal model is derived for each operating mode. Loss modelling and efficiency analysis of the proposed converter are carried out and its efficacy and performance are validated by detailed simulation and experimental results under various operating conditions.
关键词： dc-dc converter,small-signal modelling,Bipolar dc microgrid (BDCMG),fuel cell (FC),state-space averaging,photovoltaic (PV)
更新于2025-09-09 09:28:46
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Rapid Deposition of Photocatalytically Enhanced TiO<sub>2</sub> Film by Atmospheric SPPS Using Ar/N<sub>2</sub>-Vortex Plasma Jet
摘要： In this study, as cost effective and an environmentally friendly film deposition technology, Atmospheric Solution Precursor Plasma Spray (ASPPS) was utilized for the deposition of the photo-catalytic titanium oxide (TiO2) film for the fabrication process of photovoltaic devices for rural electrification in developing countries. In addition, ethanol-diluted titanium tetra-iso-butoxide (TTIB: Ti(OC4H9)4) was used as a feedstock. N2-dominant Ar/N2 was also utilized as plasma working gas as well as for the elevation of the thermal plasma energy. By controlling deposition distances and temperature, using vortex generation anode nozzle operated at 1 kW, photo-catalytic TiO2 film was deposited and its crystallinity was confirmed by X-ray diffraction. Besides, the photo-catalytic properties of the film were confirmed by the methylene blue decolorization and the surface wettability tests. Surface morphologies of the TiO2 film was evaluated using optical micrographs. Furthermore, the film thickness and strength were measured using micro screw gauge and pencil scratch tester respectively. Lastly, when this Photo-catalytic TiO2 film was applied to photovoltaic devices, the device generated an open circuit voltage of 146.7 mV with solar irradiance intensity of 574 W/m2. From these results it was confirmed that, the ASPPS technology equipped with high cooling efficiency vortex anode nozzle is available for deposition of TiO2 film for the fabrication process of low-cost photovoltaic devices for rural areas in developing countries.
关键词： renewable energy,titanium oxide,photovoltaic devices,photo-catalysis,dye sensitized solar cell,thermal spray
更新于2025-09-09 09:28:46
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[IEEE 2018 International Power Electronics Conference (IPEC-Niigata 2018 –ECCE Asia) - Niigata, Japan (2018.5.20-2018.5.24)] 2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia) - A Novel Single- Stage High-Frequency Boost Inverter Cascaded by Rectifier-Inverter System for PV Grid-Tie Applications
摘要： This paper proposes a new topology for a single-phase grid-tie two-stage DC-AC boost inverter for the application of PV systems that utilize high-frequency transformer (HFT) for galvanic isolation. In the first stage, a new single-stage high-frequency boost inverter (HFBI) is proposed to boost and convert the DC output voltage of the PV modules to a high-frequency single-phase square waveform and to realize maximum power point tracking (MPPT). The second stage is rectifier-inverter system (RIS) that interfaces HFBI to the grid. Therefore, a single-phase high-frequency transformer is used to link both stages and to provide galvanic isolation between the AC and DC sides. The proposed topology has many advantages such as increasing the inverter output voltage level, MPPT, high reliability, small size and lightweight. In addition, a proportional integral current control (PI) conventional is used to inject a sinusoidal current into the grid at unity power factor. The proposed topology has been verified analytically by using PSIM software and experimentally by using a laboratory prototype.
关键词： high frequency transformer,boost inverter,photovoltaic,grid connected
更新于2025-09-09 09:28:46