Computational investigation of dust settlement effect on power generation of three solar tracking photovoltaic modules using a modified angular losses coefficient

Solar Energy ◽  
2021 ◽  
Author(s):  
Tahereh Zarei ◽  
Morteza Abdolzadeh ◽  
Madjid Soltani ◽  
Cyrus Aghanajafi
Keyword(s):  
Power Generation ◽  
Computational Investigation ◽  
Photovoltaic Modules ◽  
Solar Tracking

scholarly journals The effect of flight state parameters on the performance of photovoltaic modules in solar aircraft

2021 ◽  
Vol 45 (1) ◽  
pp. 73-83
Author(s):  
Saydul Morshed Tanvir ◽  
Xiao Wenbo ◽  
Jin Xin
Keyword(s):  
Power Generation ◽  
Solar Radiation ◽  
Flight Speed ◽  
Generation Model ◽  
Flight Altitude ◽  
Atmospheric Density ◽  
Photovoltaic Modules ◽  
Time Space ◽  
Solar Radiation Intensity ◽  
Long Time

Based on the power generation model of photovoltaic modules, the effects of flight speed, altitude, time and area in solar aircraft on the performance of photovoltaic modules have been studied. As the flight speed increases, the power generated by the module increases but tends to saturate. When the conversion efficiency of photovoltaic modules is improved, the required power of the solar aircraft and the power generated by the photovoltaic modules are balanced at a faster flight speed. The power generated by the modules increases with the flight altitude but tends to saturate due to the drop of air temperature and the surface temperature of the module. The higher the altitude, the smaller is the atmospheric density, and atmospheric permeability, and the greater is the solar radiation intensity, and thus the power generated by the module increases. The power generated by the components is the strongest at noon. Battery performance is the strongest in summer and the weakest in winter, as the module’s performance is mainly determined by the intensity of solar radiation. Finally, the energy distribution of solar aircraft and long-time space flight has been discussed. J. Bangladesh Acad. Sci. 45(1); 73-83: June 2021

scholarly journals Study On Photovoltaic Modules On Greenhouse Roof For Energy And Strawberry Production

2019 ◽  
Vol 118 ◽  
pp. 03049
Author(s):  
Yilian Tang ◽  
Ming Li ◽  
Xun Ma
Keyword(s):  
Power Generation ◽  
Relative Humidity ◽  
The Other ◽  
Soluble Solids ◽  
Active Radiation ◽  
Photovoltaic Modules ◽  
Pv Modules ◽  
Roof Area ◽  
Microclimate Conditions ◽  
Better Than

The aim of this study was to investigate the effect of PV modules mounted on top of a greenhouse, on the growth of strawberries and microclimate conditions as well as to estimate the generated energy. In this study, two greenhouses with the same volume were established. One greenhouse was equipped with the opaque photovoltaic (OPV) modules which accounted for 25.9% of the roof area, and the other was equipped with the semi-transparent photovoltaic (STPV) modules which accounted for 20% of the roof area. The maximum annual power generation of OPV and STPV modules was 880 and 388 kWh with 30° tilt angle, respectively, by simulating different tilt angles. The temperature under the OPV and STPV modules was 2.9 and 1.1 °C lower than the unshaded part in the greenhouses, respectively, at noon in clear weather, and had little effect on relative humidity. The photosynthetically active radiation (PAR) under OPV and STPV modules was reduced by 43.5% and 31.7%, respectively, under the PE film greenhouse. The contents of soluble solids in strawberries in OPV and STPV greenhouses were 16.4 and 15.7 mg/g respectively, which were higher than those in unshaded samples. The quality and yield of the strawberry samples under the shade of OPV were better than those of the STPV shade.

scholarly journals Shadow dispersion of PV Array under variable irradiance for superior power Generation by Magic Square Configuration

2018 ◽  
Vol 7 (1.8) ◽  
pp. 172 ◽  
Author(s):  
G Sreenivasa Reddy ◽  
T Bramhananda Reddy ◽  
M Vijaya Kumar
Keyword(s):  
Power Generation ◽  
Power Loss ◽  
Electrical Power ◽  
Partial Shading ◽  
Magic Square ◽  
Photovoltaic Modules ◽  
Pv Array ◽  
Pv Modules ◽  
Square Configuration ◽  
Comparison Data

The PV array generates smaller amount of the power compared with other electrical power generation components. There are many components that are adversely effected the output of PV array in such components, one is partial shading. Due to this, each module in PV array receives different solar irradiations causes different P-V characteristics of its peak values. This paper presents a pioneering method called as Magic Square configuration has been proposed to enhance the generated power of photovoltaic modules by configuring those are under affect of shade. Thus there is no change of electrical arrangement of PV modules in an array but only the objective location in the total cross tied (TCT) array is rearranged according to the magic square arrangement. Proposed paper gives comparison data with the conventional configuration method and hence the performance is calculated. The proposed technique provides a better solution that how shadow effect on the PV  modules has been reduced and how this shadow is distributed, and not only that also gives an idea  about how the inequality losses due to the partial shading is effectively reduced. The power loss of  various configurations of 3X3 and 4X4 array has been compared. The proposed technique is validated through MATLAB/Simulink environment. 

scholarly journals Modelling and design of a two axis small scale solar tracking system for an ecological small scale house model

2018 ◽  
Vol 210 ◽  
pp. 02001
Author(s):  
Philippe Dondon ◽  
Pascal Gauterie ◽  
Renaud Charlet
Keyword(s):  
Power Generation ◽  
Sustainable Development ◽  
Mathematical Description ◽  
Tracking System ◽  
Solar Panel ◽  
Small Scale ◽  
Power Ratio ◽  
Tracking Systems ◽  
Behaviour Modelling ◽  
Solar Tracking

Nowadays power generation is one of the greatest challenges of humanity in the framework of Sustainable Development. For example, as it is globally accepted sun tracking systems allows improvement of solar panel power ratio. In order to illustrate this concept, this paper presents the design and a behaviour modelling of a two axis small scale system for future didactical applications. The principle of tracking is described. Mathematical description is done and a mixed SPICE modelling of the system, including geometrical, optical, electronic linear and non-linear aspects is built. Simulations results are analysed. Practical mechanical and electronic designs are detailed, before conclusion. This small scale solar tracking system is now installed in a eco-friendly small scale house model.

scholarly journals Changes of Photovoltaic Performance as a Function of Positioning Relative to the Focus Points of a Concentrator PV Module: Case Study

2019 ◽  
Vol 9 (16) ◽  
pp. 3392 ◽  
Author(s):  
Henrik Zsiborács ◽  
Nóra Hegedűsné Baranyai ◽  
András Vincze ◽  
István Háber ◽  
Philipp Weihs ◽  
...  
Keyword(s):  
Amorphous Silicon ◽  
Tracking System ◽  
Photovoltaic Performance ◽  
Photovoltaic Module ◽  
Point Position ◽  
Photovoltaic Modules ◽  
Solar Tracking ◽  
Power Yield ◽  
Focus Point ◽  
The Ideal

This article examines the positioning features of polycrystalline, monocrystalline, and amorphous silicon modules relative to the focus points of concentrator photovoltaic modules under real meteorological conditions using a dual tracking system. The performance of the photovoltaic modules mounted on a dual-axis tracking system was regarded as a function of module orientation where the modules were moved step by step up to a point where their inclination differed by 30° compared to the ideal focus point position of the reference concentrator photovoltaic module. The inclination difference relative to the ideal focus point position was determined by the perfect perpendicularity to the rays of the sun. Technology-specific results show the accuracy of a sun tracking photovoltaic system that is required to keep the loss in power yield below a defined level. The loss in power yield, determined as a function of the measurement results, also showed that the performance insensitivity thresholds of the monocrystalline, polycrystalline, and amorphous silicon modules depended on the direction of the alignment changes. The performance deviations showed clear azimuth dependence. Changing the tilt of the modules towards north and south showed little changes in results, but inclination changes towards northwest, southwest, southeast, and northeast produced results diverging more markedly from each other. These results may make the planning of solar tracking sensor investments easier and help with the estimate calculations of the total investment and operational costs and their return concerning monocrystalline, polycrystalline, and amorphous silicon photovoltaic systems. The results also provide guidance for the tracking error values of the solar tracking sensor.

Optical design of low concentrator photovoltaic modules

2013 ◽  
Vol 24 (1) ◽  
pp. 46-50
Author(s):  
M.A. Benecke ◽  
E.E. Van Dyk ◽  
F.J. Vorster
Keyword(s):  
Optical Design ◽  
Solar Flux ◽  
Electrical Performance ◽  
Optical Elements ◽  
Photovoltaic Modules ◽  
Design Considerations ◽  
Solar Tracking

This paper addresses the necessary procedures that need to be considered when designing an optical sub-system of low concentrator photovoltaic (LCPV) module. CPV systems make use of optical elements and solar tracking to concentrate solar flux onto a photovoltaic (PV) receiver. The performance of a concentrator module is highly dependent on the configuration and alignment of the optical elements in the system. In this study, various design considerations were taken into account to construct a LCPV module that was characterised with respect to optical design and electrical performance

Analysis and Design of a Single-Axis Automatic Solar Tracking and Power Filtering System for Solar Power Generation

2012 ◽  
Vol 10 (5) ◽  
pp. 1075-1080 ◽  
Author(s):  
Yun-Parn Lee ◽  
Chen Sin-Hong ◽  
Gau Yau-Quen ◽  
Wang Kai-Der ◽  
Shih-Hsin Ma ◽  
...  
Keyword(s):  
Power Generation ◽  
Solar Power ◽  
Analysis And Design ◽  
Solar Power Generation ◽  
Solar Tracking
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