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[IEEE 2019 6th International Conference on Control, Decision and Information Technologies (CoDIT) - Paris, France (2019.4.23-2019.4.26)] 2019 6th International Conference on Control, Decision and Information Technologies (CoDIT) - Tilt Angle Optimization of Photovoltaic Panels
摘要： The solar PV power sector in Spain has been developing at a spectacular rate in recent years. The energy cost and the dependence on fossil fuels can be reduced by improving the efficiency of photovoltaic energy production The performance of a solar radiation conversion system is affected by tilt angle with the horizontal plane. Thus, a photovoltaic array needs to be tilted at the correct angle to maximize its performance. In this paper, we investigate how to determine the optimum tilt angle. This procedure is illustrated for the city of Barcelona (Spain) located at latitude 41o 22' 56'' North and longitude 2o 6'56'' East. The optimal tilt angle varies according the seasons: In Winter (December, January, February) is 56.4, in Spring (March, April, May) is 29.11? in Summer (Jun, July, August) is 13.76? and in Autumn (September, October, November) is 48.14?. Finally, the annual optimum tilt angle for our latitude is 36.87?, with this optimal slope angel, maximum monthly and annual solar radiation is calculated. So, by means of the proposed approach, the energy generation is increased in 10.54% thanks to we are able to benefit from the maximum solar radiation.
关键词： solar PV power,optimum tilt angle,Barcelona,solar radiation,photovoltaic energy production
更新于2025-09-16 10:30:52
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Local Tilt Optimization of Photovoltaic Solar Panels for Maximum Radiation Absorption
摘要： Incident solar radiation on photovoltaic (PV) solar panels is not constant throughout the year. Besides dependence on the season, solar radiation is reliant on the location and weather conditions. For a given location on Earth, the best-?xed orientation of a PV panel can be determined by achieving the maximum incident solar irradiance throughout the year or for a predetermined period. In this paper, we use a sophisticated atmospheric radiative transfer model to calculate the direct and di?use solar irradiation (radiant exposure) for the solar spectrum incident on PV solar panels to determine the best tilt angle of the panel in order to maximize absorption of solar radiation for selected periods. We used the Regula-Falsi numerical method to obtain the tilt angle at which the derivative of solar irradiation (concerning the tilt angle) approaches zero. Moreover, the spectral response of typical silicon cells is taken into account. These calculations were carried out in S?o Carlos (SP), a town in the southeast of Brazil. The best tilt angle was obtained for three selected periods. Additionally, we provide results for Southern latitudes ranging from 0° to ?55° in steps of ?5° for the meteorological seasons. We have shown that for each period, there is an increase in solar radiation absorption compared to the traditional installation angle based exclusively on the local latitude. These calculations can be extended to any location.
关键词： Regula-Falsi numerical method,solar radiation absorption,photovoltaic solar panels,tilt angle optimization,atmospheric radiative transfer model
更新于2025-09-12 10:27:22
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Numerical investigation of wind influences on photovoltaic arrays mounted on roof
摘要： The wind-induced response of photovoltaic (PV) panel installed on building roof is influenced by the turbulence induced by the pattern of both panels and roofs. Different roof types cause different flow patterns around PV panels, thus change the flow mechanism exerted on PV panels. In this study, the effects of roof types, heights and the PV array layouts on the net wind loads of the PV panel is investigated. The software Fluent is adopted and the three-dimensional Reynolds-averaged Navier–Stokes (RANS) method is used for numerical analysis. The rationality and accuracy of the numerical results obtained from the current study are verified through comparison with the results of wind tunnel experiments. The maximum wind uplift on the PV panels increases with the panel tilt angle for two types of roofs, but decreases with the increase of the PV array edge setback. Moreover, the maximum wind uplift also increases with the roof clearance within a certain range. Both the row spacing of PV array and the building height have a great effect on the maximum aerodynamic uplift for gable roofs, whereas both of them have slight influence for flat roofs.
关键词： Roof photovoltaic array,roof type,wind pressure coefficient,Reynolds-averaged Navier–Stokes simulation,edge setback,PV panel tilt angle
更新于2025-09-12 10:27:22
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Optimum Tilt Angle and Orientation of Photovoltaic Thermal System for Application in Greater Toronto Area, Canada
摘要： We present a study conducted to obtain optimum tilt angle and orientation of a solar panel for the collection of maximum solar irradiation. The optimum tilt angle and orientation were determined using isotropic and anisotropic di?use sky radiation models (isotropic and anisotropic models). The four isotropic models giving varying optimum tilt angles in the range of 37 to 44°. On the other hand, results of the four anisotropic models were more consistent, with optimum tilt angles ranging between 46–47°. Both types of models indicated that the collector tilt should be changed four times a year to receive more solar radiation. The results also indicate that the solar panel should be installed with orientation west or east of due south with a ?atter tilt angle. A 15° change in orientation west or east of due south results in less than 1% reduction of the total solar radiation received. For a given optimum tilt angle, the e?ect of photovoltaic/thermal (PV/T) orientation west or east of due south on the outlet temperature was determined using a one-dimensional steady state heat transfer model. It was found that there is less than 1.5% decrease in outlet temperature for a PV/T panel oriented up to 15° east or west of due south from March to December. This result indicates that existing roofs with orientations angles up to 15° east or west of due south can be retro?tted with a PV/T system without changing the roof shape.
关键词： PV/T system,anisotropic models,solar radiation,optimum tilt angle,isotropic models,solar PV orientation
更新于2025-09-12 10:27:22
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Determining Optimum Tilt Angles of Photovoltaic Panels by Using Artificial Neural Networks in Turkey
摘要： Sun is the most important energy source of the world. To make use of this energy source effectively, the sun’s angle of incidence to earth must be known. The angle, however, between rotation axis and orbital plane of the world is not constant and it changes continuously. Depending on this change, the incidence angle of sun beams also change. For purpose of increasing the light amount falling on solar panels, light beams must be adjusted according to their angles of incidence. The difference of this study from the studies in literature realized to determine the optimum tilt angle by means of mathematical methods is the determination of optimum tilt angles with artificial neural networks. In the study, not each province within boundaries of Turkey but the whole country as a system was introduced to the artificial neural network. Thanks to this, monthly optimum tilt angle of the system to be installed in any place within boundaries of Turkey was determined by the artificial neural network. The installed solar panels were adjusted according to this optimum tilt angle. Thanks to this, it was ensured to be obtained maximum output from solar panels. Mounting of the system according to an angle as predicted by artificial neural network has caused 34% increase in energy amount obtained from fixed solar panel systems. Consequently, in this study, in prediction of optimum tilt angle of fixed solar panels, in what extent the artificial neural networks are successful were observed. It was determined that correct results have been obtained in respect of both economy and utilization.
关键词： Optimum Tilt Angle,Solar Cell,Renewable Energy,Artificial Neural Networks
更新于2025-09-12 10:27:22
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Proposal of a Precision Probe-Tilt Adjustment with the RF Signal Detection Technique
摘要： This study proposes a precision probe-tilt adjustment for an on-wafer measurement system. An original probe station with an electro-actuating goniometer stage was constructed to demonstrate the proposed technique. The tilt angle of a probe was shifted in the adjustment operation to acquire the S-parameter. The acquired S-parameter was analyzed to determine the angle of the goniometer stage, where the probe tip was aligned parallel to the substrate. The tilt angle was repeatedly estimated as ± 0.35 degree, which is over one degree in a conventional adjustment technique by direct observation with a microscope.
关键词： S-parameter,RF signal detection technique,probe tilt angle,on-wafer measurement
更新于2025-09-10 09:29:36
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[IEEE 2018 Iranian Conference on Electrical Engineering (ICEE) - Mashhad (2018.5.8-2018.5.10)] Electrical Engineering (ICEE), Iranian Conference on - Analytical Approaches for Determining Optimal Tilt Angle and Orientation of PV Modules Considering Regional Climate Conditions
摘要： The increasing growth of solar power plants installation necessitates performing accurate investigations on new methods to find optimum tilt angel and orientation of photovoltaic (PV) panels. Using optimum methods increases collected solar irradiance, and consequently, maximize the expected annual harvested energy, which means better financial performance of PV power plants. In this paper, the optimum tilt angle and orientation of PV panels are calculated by introducing two accurate analytic methods, which take into account the climate conditions of the installation region by considering wind speed, irradiance and ambient temperature. The results of this paper, which are supported by Monte Carlo simulation, indicate that compared with the traditional method, an increase in expected annual produced energy of solar panels is achievable using the optimum tilt angel and orientation calculated by the presented methods.
关键词： photovoltaic,orientation,analytical method,Monte Carlo,tilt angle
更新于2025-09-10 09:29:36
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Fiber-optic Fabry-Perot sensor for simultaneous measurement of tilt angle and vibration acceleration
摘要： A fiber-optic Fabry-Perot (F-P) sensor, based on a pendulum structure, for simultaneous measurement of tilt angle and vibration acceleration was proposed, which also has a high tilt angle resolution. The real-time cavity lengths are absolutely measured using a fast demodulation algorithm. The tilt angle is estimated from the mean value of the real-time cavity lengths while the vibration acceleration derives from the alternating quantity of them. A series of experiments are conducted using a micro-tilt platform and a vibration table to simulate tilt angle change and the vibration perturbation, respectively. The experimental results show a tilt angle resolution of 0.023″ in the measurement range from -2.8° to 2.6°. Meanwhile, the vibration acceleration results are obtained by using a spectral analysis to the alternating quantity and basing on a non-linear fitting curve of the frequency response of the acceleration sensibility, within the frequency range of 0~180 Hz.
关键词： vibration acceleration,simultaneous measurement,tilt angle,pendulum,Fabry-Perot interferometer
更新于2025-09-09 09:28:46
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New approach for maximizing generation and optimal utilization of available space for solar PV system
摘要： To accomplish an enormous demand of power with solar energy, a cost effective and optimum system has to be developed which works in synchronisation with the existing grid. The Government in developing countries like India is providing momentous opportunities and marvellous schemes to promote renewable energy sources like solar for generating power. This paper aims to analyse the generation of power from solar photovoltaic (PV) systems economically and efficiently as it is always a challenge for the design engineer to develop an economical and efficient solar PV system. Apart from technical issues, structural aspects also affect the power generation from PV modules. This paper proposes an innovative design of non-movable tracking system that enhances the power generation of PV modules by just providing two grooves in the mounting structure in place of the tracking system. A formula for the optimum space calculation for PV installation is also proposed in this paper. A comparative analysis of total annual energy generated by the hardware setup and the results obtained using software of the rooftop solar PV system has also been analysed for practical consideration. To verify the results, first, the system has been simulated using the PVSYST software considering all practical and existing realistic losses like PV loss due to irradiance and temperature, array soil loss, module quality loss, array mismatch loss, ohmic wiring loss, and inverter loss which formulate a bonafide case of consideration and then hardware implementation of the proposed system. The hardware and software results have been compared to analyse the proposed topologies adopted to address the aforesaid problems.
关键词： grid connected PV system,optimum module placement,solar PV system,PVSYST software,module tilt angle
更新于2025-09-04 15:30:14