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oe1(光电查) - 科学论文

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出版时间
  • 2019
  • 2018
  • 2014
研究主题
  • solar cell
  • hybrid-resonant PWM switching
  • PWM switching
  • MPPT
  • resonant converter
  • solar power
  • Geostationary satellite images
  • Global and direct solar radiation
  • Meteorological station
  • validation
应用领域
  • Electrical Engineering and Automation
  • New Energy Science and Engineering
  • Optoelectronic Information Science and Engineering
  • Optoelectronic Information Materials and Devices
  • Applied Physics
机构单位
  • National technical University “Kharkiv Polytechnic Institute”
  • University of évora
  • Fraunhofer Institute for Solar Energy Systems ISE
  • University of Tunis El Manar
  • Zeal College of Engineering and Research
  • Northern (Arctic) Federal University named after M.V. Lomonosov
  • Cochin University College of Engineering
  • National Renewable Energy Laboratory
  • NED University
  • Universidad Veracruzana
4089 条数据
?? 中文（中国） ▾

  • [ACM Press the 3rd International Conference - Tetouan, Morocco (2018.10.10-2018.10.11)] Proceedings of the 3rd International Conference on Smart City Applications - SCA '18 - Empirical models for estimating the global solar radiation based on air temperature and sunshine duration

    摘要： This work aims to develop and validate empirical models for estimating global solar radiation at site of Alhoceima based on the meteorological data measured during the period 2010-2017. The empirical models studied in this paper are broken down into two categories: the first category consist of linear and nonlinear regression which relates the monthly average daily global solar radiation to the sunshine duration, such as: the model of Angstr?m-Prescott, the cubic, quadratic model (Ogleman et al.), exponential (Almorox), logarithmic and power model. The second category consists of mathematical models calculating the monthly average daily global solar radiation based on the air temperature. And finally this study proposed model wish is based on sunshine duration and gives the best results for the city of Alhoceima. Statistical evaluation of the performance and accuracy of the models on the basis of The Root Mean Square Error (RMSE), Mean Bias Error MBE and R2 coefficient of determination, showed that all calibrated models estimates very well the monthly average daily global radiation. However the proposed model is more accurate with smaller errors and the best coefficient of determination.

    关键词： air temperature,empirical model,sunshine duration,Daily global solar radiation,estimating global solar radiation

    更新于2025-09-23 15:23:52

  • [IEEE 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC) - Waikoloa Village, HI, USA (2018.6.10-2018.6.15)] 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC) - Commercial Test of Anti-Reflective Coating on First Solar Cadmium Telluride PV Modules

    摘要： Anti-reflective coatings (ARC) are commonly applied to photovoltaic (PV) modules in the solar industry to increase power and energy output. In addition to characterization of initial module power and angle of incidence modifier (IAM), it is important to verify that the expected gain is observed in commercial system operation. This analysis shows the increased performance of ARC First Solar CdTe PV modules compared to non-ARC equivalent modules in a commercial test in New South Wales, Australia. PPI analysis indicates a sustained ARC performance gain over time, suggesting good ARC durability. Detailed actual-expected analysis shows both array types performing at or above expected levels after almost 2 years in the field. ARC arrays show slightly greater benefit than predicted compared to non-ARC arrays.

    关键词： CdTe thin film photovoltaics,solar power generation,performance analysis,photovoltaic systems,PV anti-reflective coatings,solar energy

    更新于2025-09-23 15:23:52

  • A new solar hybrid clean fuel-fired distributed energy system with solar thermochemical conversion

    摘要： This paper proposes a new solar hybrid clean fuel-fired distributed energy system to increase the system thermodynamic efficiency and save fossil fuel, in which solar energy is upgraded into high-level chemical energy of syngas (H2 and CO) by integrating the solar-driven methanol decomposition based thermochemical conversion. Solar energy, in the form of chemical energy of the generated syngas, is steadily stored and utilized to drive the distributed energy system to generate power, heat and cooling. The double-axis tracking parabolic trough solar collector is deployed to the proposed system to reduce the cosine loss of solar energy. The incorporation of the solar thermochemistry and double-axis solar concentrator technologies leads to a significant improvement in the solar energy utilization efficiency and the off-design performances under varying solar irradiations. With the integration of solar energy utilization and tri-generation, the proposed system achieves a high net solar-to-electric efficiency, 24.66%, and results in high primary energy ratio, 83.86%, exergy efficiency, 38.81%, and carbon emission saving rate, 51.43%. The proposed system is deployed to an office building to study the operation strategies and annual thermo-economy performances, and competitive off-design performances and economy performances are achieved. The research findings open up a new avenue towards the efficient utilization modes of clean fuel and solar energy.

    关键词： Distributed energy system,Solar fuel,Solar thermochemistry,Methanol decomposition,Tracking strategy

    更新于2025-09-23 15:23:52

  • Edge/Defect-rich, Metallic, and Oxygen-heteroatom-doped WS2 Superstructure with Superior Electrocatalytic Performance for Green Solar Energy Conversion

    摘要： Two-dimensional tungsten sulfide is widely applied in electrocatalysis field. However, WS2 possesses catalytic active sites located at the layer edge and an inert surface for catalysis. Therefore, increasing the exposure of active sites at the edge and effectively activating the inert sites on the surface is important challenges. Here, we synthesize edge/defect-rich and oxygen-heteroatom-doped WS2 (ED-O-WS2) superstructure. The power-conversion efficiency (PCE) of dye-sensitized solar cells (DSCs) based on ED-O-WS2 counter electrode reach 10.36% (under 1 Sun, AM 1.5, 100 mW cm?2) and 11.19% (under 40 mW cm?2). These values are, to our knowledge, the highest reported efficiency for DSCs based on Pt-free counter electrodes in I3-/I- electrolytes. Analysis of micro-nano structure and electrocatalytic mechanism indicate that ED-O-WS2 exhibit metallic properties in the electrolyte, and that rich edge/defect and oxygen doping in ED-O-WS2 play an important role in improving the catalytic activity of WS2. Moreover, ED-O-WS2 displays better catalytic reversibility for I3-/I- electrolytes than that of noble metal Pt.

    关键词： WS2,green solar energy conversion,dye-sensitized solar cells,counter electrode

    更新于2025-09-23 15:23:52

  • Measurement and Investigation of the Incident Radiation in Case of Using Transparent Pyramidal Covers for Improving the Solar Panel’s Power Output

    摘要： A new approach is presented to enhance the solar radiation intensity incident over the solar panel by using a transparent cover of pyramidal shapes. The pyramidal cover shape is manufactured of Polymethylmethacrylate dielectric material. The normal height of each pyramid is considered as a ratio of the base length. This ratio is considered in the present study to be 0.5, 1, and 1.5. The effect of the pyramidal covers on the solar panel voltage has been studied at different conditions. The experimental results confirm that the pyramidal cover shape causes the improvement to the solar panel output voltage by 4.2% when covering all the panel with pyramids of R=1 with a light incidence angle of 90 when the light rays come parallel to the panel surface. This improvement is found to decreases with covering fewer areas of the solar panel and with fewer incidence angles. It is found also that the distance between the light source and the panel is proportional to the output voltage improvement ratio compared to the panels output voltage without pyramidal cover. A mathematical model has been presented to prove the concept of increasing the electric and magnetic field of the incident radiation from the sun in case of presence of the transverse transparent barrier. Moreover, a mathematical ray tracking model was presented and validated with the experimental results by a maximum relative error of 14.8%

    关键词： solar panel improvement,Incident radiation,enhancement of light field radiation,polarization,enhancement of solar radiation,transverse of transparent barrier

    更新于2025-09-23 15:23:52

  • Assessment of solar energy potential in Gaza Strip-Palestine

    摘要： Renewable energy sources and technologies have the potential to provide solutions to the energy problems. Solar energy can be an important part of the Palestinian’s strategies not only to add a new capacity but also to increase energy security, addressing the environmental concerns. In this paper, e?orts have been made to summarize the current status, availability, and future potential of solar energy options in Gaza Strip. Solar radiation data was provided by Meteoblue AG – Switzerland [www.meteoblue.com] as hourly time-series for 15 years from 2000 to 2015 for ?ve cities in Gaza Strip, which are geographically presenting the entire Gaza Strip. Jabalia, Gaza, Deir-Albalah, Khan-Yunis, and Rafah. These data are used directly to evaluate the potential of solar energy in the three selected sites by means of the System Advisor Model (SAM) from National Renewable Energy Laboratory (NREL) software. The potential of solar energy in Palestine using Photovoltaic (PV) and concentrating (CS) solar systems have been discussed. The present study can be considered as a road-map to get out of the electricity crisis in the Gaza Strip and to end the su?ering of Gazians. In this work, two scenarios are suggested, the ?rst one is urgent, it stipulates to generate the demand load (552 GWh/year) by means of (PV) solar power systems. While the second scenario is leading to terminate the reliance on imported energy by producing all the energy needs locally via (PV) solar system. The study reached to determine the ?nancial budget, the levelized cost of electricity (LCOE), and the technical parameters for both scenarios. The urgent action is building up a 555 MWp of (PV) solar system on the rooftop of Gaza Strip’s buildings. This will cost about 800 million $US and the expected price of electricity will be ranged between ($US 0.07–0.11) per kWh, which is four times less than the present price ($US 0.29–0.46) per kWh. The solar energy can lay a strong foundation for an independent the Palestinian state, generate employment opportunities, alleviate poverty and provide a visionary approach to the dreams of Palestinian youths.

    关键词： Palestine,Solar energy,Electricity crisis,(PV) solar system,Gaza Strip

    更新于2025-09-23 15:23:52

  • Design and optimization of grid-tied and off-grid solar PV systems for super-efficient electrical appliances

    摘要： Modeling, simulation, and optimization methods are used in the present study to design grid-tied and off-grid solar PV systems for super-efficient electrical appliances for residential buildings. The principal objective of this study is to design a renewable energy system to serve the electric load of super-efficient appliances with high penetration of renewable resources and low greenhouse gas emissions and cost of energy. Hourly calculations using optimization method are used to study the daily and yearly performance and the cost of the renewable energy systems. A comparison between the performance of the grid-tied and off-grid solar PV systems using conventional and super-efficient appliances in Dubai is presented. The comparison includes the total power production from the solar PV system, the power purchased from the grid, the extra power sold to the utility grid, the power used to meet the electrical load of the appliances, the excess power, the renewable fraction, the greenhouse gas emissions, and the levelized cost of energy. The results of the simulation show that the integration of super-efficient appliances powered with the grid-tied solar power system is a good option to control the energy consumption of the residential buildings and to reduce the cost of electricity and greenhouse gas emissions: low building energy consumption (reduction by half of the electrical power consumption: from 62.91 to 30.78 kWh/day using super-efficient appliances); all the electrical power demand for the building is met without shortage; the power systems produce low excess power (0.29–1.82%) compared to the off-grid power system; all the extra power from the solar PV is sold back to the grid to reduce the cost of energy, high renewable fraction (68% of the total energy served to the load is produced from solar PV), low-cost of electricity (12% reduction of the cost of energy compared to the utility grid), and low greenhouse gas emissions (45–51% reductions of the CO2, NOX, and SO2 emissions compared to the conventional electrical appliances).

    关键词： Grid-tied solar PV,Off-grid solar PV,Super-efficient appliances,Energy efficiency,Renewable energy

    更新于2025-09-23 15:23:52

  • Performance of a modified solar chimney power plant for power generation and vegetation

    摘要： This paper develops a mathematical model to investigate the performance of a modified solar chimney power plant (MSCPP) for purposes of both power generation and vegetation. It then estimates the net added benefit. Results show that with the vegetation area enlarging, the MFR of the vapor increases, and more heat is used as the latent heat for water evaporation, leading to considerable reduction of the power. Condensation from the saturated air occurs only for very large vegetation area. On a cooler day, the plant produces less power and the condensation occurs for smaller vegetation area. Higher relative humidity of ambient air results in clear reduction of the MFR of the vapor evaporating from the vegetation area, and accordingly the great enhancement of the power. The benefit from agricultural products is larger than the benefit loss caused by the electricity loss, and the benefit of fresh water condensed from the saturated air is negligible. This leads to net added benefit for the MSCPP compared to the conventional plant. The net added benefit becomes greater with larger vegetation area. When the chimney is heightened from 1000 m to 1500 m, the power is enhanced greatly; however, the net added benefit becomes smaller.

    关键词： Vegetation,Solar collector,Latent heat,Fresh water,Solar chimney,Power generation

    更新于2025-09-23 15:23:52

  • [IEEE 2018 2nd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) - Ankara, Turkey (2018.10.19-2018.10.21)] 2018 2nd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) - The setup cost payback times of 1 kW fixed and dual axis tracking solar energy systems

    摘要： In this paper an 80 W optimally tilted fixed solar energy system and an 80 W azimuth-altitude dual solar axis tracking system are designed and analyzed. The systems are mounted on the roof an industrial building in Sakarya, Turkey. The fixed solar energy system is tilted at the yearly optimum tilt angle for the city. The tracking system is designed to follow the Sun’s position by means of solar mathematics. The electrical behavior of the systems are observed for six months and the obtained results are used to evaluate the setup cost payback times of 1 kW applications. In conclusion it is determined that the fixed solar energy system pay back its setup cost in 7.18 years and the tracking solar energy system in 10.73 years.

    关键词： solar tracking system,fixed solar energy system,optimally tilted,setup cost payback time

    更新于2025-09-23 15:23:52

  • [IEEE 2018 IEEE XXVII International Scientific Conference Electronics (ET) - Sozopol, Bulgaria (2018.9.13-2018.9.15)] 2018 IEEE XXVII International Scientific Conference Electronics - ET - Algorithm for Single Axis Solar Tracker

    摘要： The Sun gives us PW’s free of charge renewable energy, which can be converted into electricity by photovoltaic panels or into heat by sun collectors. Algorithm and hardware block diagram of single axis solar tracker are made in this paper. Also a comparison is made between a single axis solar tracking photo voltaic system and a fixed one. One axis solar tracking system gets average up to 30% more solar energy in comparison with the static one.

    关键词： Solar Energy,Microcontroller,Photovoltaic,Green Energy,Solar Tracker

    更新于2025-09-23 15:23:52