scholarly journals Retaining the Power Efficiency of Solar Panels with Super Hydrophobic Coating

2017 ◽  
Vol 4 (2) ◽  
Keyword(s):  
Power Efficiency ◽  
Solar Panels ◽  
Hydrophobic Coating

scholarly journals Using a Fuzzy Light Sensor to Improve the Efficiency of Solar Panels

2018 ◽  
Vol 31 ◽  
pp. 01007
Author(s):  
Suryono Suryono ◽  
Jatmiko Endro Suseno ◽  
Ainie Khuriati Riza Sulistiati ◽  
Tahan Prahara
Keyword(s):  
Light Source ◽  
Power Efficiency ◽  
Solar Panel ◽  
Source Tracking ◽  
Fuzzy Membership ◽  
Solar Panels ◽  
Light Sensor ◽  
Sensor Property ◽  
Tracking Model

Solar panel efficiency can be increased by improving the quality of photovoltaic material, the effectiveness of electronic circuit, and the light source tracking model. This research is aimed at improving the quality of solar panels by tracking light source using a fuzzy logic sensor. A fuzzy light sensor property is obtained from two LDR (light dependent resistor) light sensors installed in parallel to each other and is given a light separator in between them. Both sensors are mounted on a solar panel. Sensor output is acquired using a 12 bit ADC from an ATSAM3XE microcontroller and is then sent to a computer using WIFI radio. A PID (Proportional-Integral-Derivative) control algorithm is used to manage the position of the solar panel in line with the input given by the fuzzy light sensor. This control mechanism works based on the margin of fuzzy membership from both sensors that is used to move a motor DC that in turn moves the solar panel. Experimental results show a characteristically symmetrical fuzzy membership of both sensors with a reflected correlation of R=0.9981 after gains from both sensors are arranged with a program. Upon being tested in the field, this system was capable of improving the performance of solar panels in gaining power compared to their original fixed position. The discrepancy was evident when the angle of incoming sunlight approached both 0° and 180°. Further calculations of data acquired by the fuzzy light sensor show increased solar panel power efficiency by up to 5.6%.

Design and Implementation of Dual-Axis Solar Tracking System with GSM Fault Reporting Capability

2013 ◽  
Vol 724-725 ◽  
pp. 43-51 ◽  
Author(s):  
Yu En Wu ◽  
Kuo Chan Huang
Keyword(s):  
Power System ◽  
Power Efficiency ◽  
Solar Power ◽  
Tracking System ◽  
Elevation Angle ◽  
Azimuth Angle ◽  
The Sun ◽  
Solar Panels ◽  
Sensing Element ◽  
Solar Tracking

This paper presents a smart dual-axis solar tracking system, its architecture includes sensors, embedded controllers, AC motors, Integrated electric putter design biaxial institutions, and the GSM automatic report of fault notification, to achieve autonomous tracking solar track system and adjust the solar panels to reach the maximum smooth by tracking the solar azimuth angle and elevation angle, and ensure that the solar panels with the sun to maintain the vertical in any time and any place, thus achieving the best power efficiency. This system proposed a dual-axis design, and an embedded controller used as the main system controller to detect voltage difference and determine the solar azimuth angle with four groups of CDS as a sensing element. To lock the sun, the solar panels be perpendicular via the moving of AC motor (EW) and motorized faders (north-south). The control system software using C language can be extremely fast and accurate tracking of the solar angle, and dual-axis operation with recovery mode to save the power loss. Finally, we have the actual analysis and verification of benefit of power generation in this paper, from this experimental results, we can verify the integration of build dual-axis solar tracking system and solar power system have promoted 30% generating power capacity more than fixed solar power system and has low failure rate. It can improve the problem of traditional tracking system reliability and greatly enhance the usefulness of this system.

scholarly journals Dipping-Press Coating Method for Retaining Transparency and Imparting Hydrophobicity Regardless of Plastic Substrate Type

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 403
Author(s):  
Jeeyin Park ◽  
Taekyung Lim ◽  
Keun-Hyeok Yang ◽  
Sanghyun Ju ◽  
Sang-Mi Jeong
Keyword(s):  
Plastic Substrate ◽  
Coating Film ◽  
Solar Panels ◽  
Substrate Type ◽  
Aluminum Oxide Nanoparticles ◽  
Plastic Substrates ◽  
Hydrophobic Coating ◽  
Outdoor Environments ◽  
Coating Method ◽  
Dipping Process

Plastics are used in cover substrates for billboards, windows, large LED signboards, lighting devices, and solar panels because they are transparent and can be colored and shaped as desired. However, when plastic cover substrates installed in outdoor environments are constantly exposed to harsh conditions such as snow, rain, dust, and wind, their transparency deteriorates owing to watermarks and dust contamination. Herein, we investigated a simple dipping-press coating method that can impart hydrophobicity while maintaining the transparency, regardless of the plastic substrate type. A highly transparent and hydrophobic coating film was formed on a plastic substrate by a two-step process, as follows: (1) application of a polydimethylsiloxane–octadecylamine coating by a dipping process, and (2) embedding (1H,1H,2H,2H-heptadecafluorodec-1-yl) phosphonic acid–aluminum oxide nanoparticles by a thermal press process. The plastic substrates on which the highly transparent and hydrophobic coating film was formed showed 150° or higher hydrophobicity and 80% or higher visible light transparency. The coating method proposed herein can easily impart hydrophobicity and is compatible with any plastic substrate that must maintain prolonged transparency without contamination when exposed to adverse conditions.

scholarly journals PERANCANGAN ZETA CONVERTER PADA PELACAKAN TITIK DAYA MAKSIMUM PHOTOVOLTAIC MENGGUNAKAN ALGORITMA MODIFIKASI HILL CLIMBING

Foristek ◽  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Irwan Mahmudi ◽  
Jumiyatun Jumiyatun ◽  
Baso Mukhlis ◽  
Lukman Lukman
Keyword(s):  
Power Efficiency ◽  
Electrical Energy ◽  
Maximum Power ◽  
Hill Climbing ◽  
Photovoltaic Module ◽  
Solar Panels ◽  
Hill Climbing Algorithm ◽  
Point Tracking ◽  
Power Point ◽  
Almost All

Electrical energy is a primary need at this time, which almost all human activities require electricity. The electrical energy we use today is a conversion from other energy, partly derived from fossil energy, which is energy that cannot be renewed and will run out if it is continuously explored and exploited. Solar energy is a renewable energy source that has the potential to be converted to electrical energy using solar panels or so-called photovoltaics. Photovoltaic has a drawback in its use, namely the output value is very dependent on environmental conditions. To maximize the power efficiency between the photovoltaic output and the power to be used by the load, a method is needed, namely Maximum Power Point Tracking (MPPT). In the application of this MPPT DC-DC Zeta converter is used with a hill climbing algorithm to achieve the value of the output voltage and current at maximum power. With this method, it is expected that MPPT control is reliable and easy to apply. In this study, the type of photovoltaic module used is the 60 Wp monocrystalline type with sampling data once an hour from 09.00 - 17.00 WITA, the tracking speed data obtained by the modified hill climbing algorithm is 0.142 seconds on average with an average efficiency of 99.969 %.

“Solar panels forest” and its radiative forcing effect: preliminary results from the Arava Desert

2020 ◽  
Author(s):  
Rafael Stern ◽  
Madi Amer ◽  
Jonathan Müller ◽  
Fyodor Tatarinov ◽  
Lior Segev ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Radiative Forcing ◽  
Power Efficiency ◽  
Sensible Heat Flux ◽  
Surface Energy Budget ◽  
Spatial Average ◽  
Sensible Heat ◽  
Solar Panels ◽  
High Background ◽  
Preliminary Results

<p>       The production of electricity from solar radiation should replace power production by burning fossil fuel and help reduce atmospheric concentrations of CO<sub>2</sub>. However, large photovoltaic (PV) fields can also influence the climate in more direct ways. The albedo of solar panels is low to allow efficient light absorption, but actual conversion efficiency is below  20%. The remaining 80% of the energy is reflected, re-emitted as thermal radiation or dissipated as sensible heat (H). These effects can heat the surface, influence local air circulations, and lead to the formation of “heat-islands”. Such effects are particularly significant in desert areas with high radiation load and high background albedo. The ultimate objective of this study will be to estimate the cost (in number of years) of CO<sub>2</sub> emission suppression of a PV power generation (a “cooling effect”) associated with the albedo radiative forcing and the surface "warming effects" and the partitioning to its components.</p><p>       We used a state-of-the-art field laboratory to carry out eddy covariance flux measurements of sensible and latent heat, and the radiative balance of incoming and outgoing short- and long-wave radiations. A research drone equipped with a thermal and a multi-spectral camera was used to estimate the spatial average reflected and emitted radiation from the solar panels field. Measurements were carried out on campaign basis during 2018-2019, both inside and outside a PV field in the Arava desert in southern Israel.</p><p>       The preliminary results indicated that summer noon incoming solar radiation (S) is ~1000 Wm<sup>-2</sup> and the desert surface albedo is on average 0.40. The mean solar panel field albedo is 0.23 (with panels projected area about 1/3<sup>rd</sup> of the PV field area), which is translated to ~170 Wm<sup>-2</sup> higher S absorption by the PV field. A large fraction of the energy is converted to sensible heat flux with mid-day H values of 450 Wm<sup>-2</sup>, compared with 250 Wm<sup>-2 </sup>in the desert, or about 200 Wm<sup>-2</sup> of extra heating above the PV field. A first approximation of the summer daily carbon suppression (assuming 12h daily average sunlight of ~500 Wm<sup>-2</sup>, PV efficiency of 0.2, and conventional power efficiency of ~200 gC/KWh) indicated ~0.08 Kg C per day per m<sup>-2</sup> PV area. These preliminary results are being extended to include thermal emission effects and the annual scale perspective to assess the “PV forest” radiative forcing effect. But it is evident that the land use change examined here has a large impact on the surface energy budget and its surrounding environments.</p>

scholarly journals Analisis Efesiensi Daya Penerangan Jalan Umum Tenaga Surya di Kecamatan Pulau Ternate

2021 ◽  
Vol 4 (1) ◽  
pp. 53
Author(s):  
Idham A Djufri ◽  
Miftah Muhammad
Keyword(s):  
Solar Energy ◽  
Power Efficiency ◽  
Solar Power ◽  
Input Voltage ◽  
Field Conditions ◽  
Solar Panels ◽  
Street Lighting ◽  
Direct Observations ◽  
Network Area ◽  
Maximum Voltage

Solar Street Lighting a street lighting solution for areas or areas that are not within the PLN network area or for lighting efficiency using solar power. The use of public street lighting, although it has several advantages, there are still disadvantages in the field conditions, including the improper placement of the lighting so that it is blocked from sunlight, the use of inappropriate materials, unsuitable height of poles and lack of maintenance which results in not optimal utilization of solar energy. In this study, an analysis of the power efficiency of solar street lighting in the District of Ternate Island will be carried out by conducting direct observations and measurements in the field. The results showed that the maximum voltage for street lamps that were not blocked by trees was 23 volts, while those that were blocked by trees were 19 volts. The lighting strength of the street lights that are blocked by trees is 9 lux, while those that are not blocked by trees are 10 lux. The amount of input voltage for the solar panels affects the strength of the lamp lighting

Hybrid Lighting Complex for Combined Lighting Systems Research Into Optical Path Optimization Using the Complex "Solar Led-S" New Modification

2018 ◽  
pp. 122-129
Author(s):  
Alexander T. Ovcharov ◽  
Yuri N. Selyanin ◽  
Yaroslav V. Antsupov
Keyword(s):  
Light Transmission ◽  
Optical Path ◽  
Artificial Light ◽  
Solar Panels ◽  
Shopping Centre ◽  
Systems Research ◽  
Lower Stage ◽  
Input Structure ◽  
Lighting Systems ◽  
Two Stages

A new concept of the architecture of hybrid lighting systems for installations of combined lighting is considered. The cascade principle of constructing the optical path of such complexes is described, in which the design contains two stages of the cascade: the upper and lower stages. The upper (input) structure is made on the basis of the corresponding modification of the hollow tube “Solatube®” (daylight), and the lower one, based on the “Solatube®” fibre of a larger diameter, is combined with LED artificial light block and is designed to transmit mixed light (daylight and artificial light). The results of studies on the efficiency of light transmission made it possible to optimize the solution of the new modification of the hybrid lighting complex “Solar LED”, lower stage of the cascade, and to develop the nomenclature of the production line “S”. The description of the first experience of using this complex in the pilot combined illumination system of the “meeting room” in the shopping centre “IKEA Belaya Dacha” headquarters is given. A completely autonomous power supply system for a lighting installation based on solar panels has been implemented.

An Impedance Measurement Method of Solar Panels by Power Converter using PRBS

2020 ◽  
Vol 140 (3) ◽  
pp. 140-147
Author(s):  
Koji Takechi ◽  
Takeshi Yokoi ◽  
Hiroaki Kakigano
Keyword(s):  
Measurement Method ◽  
Impedance Measurement ◽  
Power Converter ◽  
Solar Panels

Effect of Shielding a Floating Electrode on the Power Efficiency of a Micro-plasma VUV Light Source

2015 ◽  
Vol 135 (3) ◽  
pp. 114-115 ◽  
Author(s):  
Ryoto Sato ◽  
Daisuke Yasumatsu ◽  
Shinya Kumagai ◽  
Masaru Hori ◽  
Minoru Sasaki
Keyword(s):  
Light Source ◽  
Power Efficiency ◽  
Floating Electrode

EXPERIMENTAL AND ANALYTICAL STUDIES OF VERTICAL AXIS WIND TURBINES

2018 ◽  
pp. 51-58
Author(s):  
B. P. Khozyainov
Keyword(s):  
Wind Turbine ◽  
Flow Velocity ◽  
Wind Power ◽  
Wind Turbines ◽  
Power Efficiency ◽  
Air Flow ◽  
Geometrical Parameters ◽  
Wind Speeds ◽  
Analytical Studies ◽  
Air Flow Velocity

The article carries out the experimental and analytical studies of three-blade wind power installation and gives the technique for measurements of angular rate of wind turbine rotation depending on the wind speeds, the rotating moment and its power. We have made the comparison of the calculation results according to the formulas offered with the indicators of the wind turbine tests executed in natural conditions. The tests were carried out at wind speeds from 0.709 m/s to 6.427 m/s. The wind power efficiency (WPE) for ideal traditional installation is known to be 0.45. According to the analytical calculations, wind power efficiency of the wind turbine with 3-bladed and 6 wind guide screens at wind speedsfrom 0.709 to 6.427 is equal to 0.317, and in the range of speed from 0.709 to 4.5 m/s – 0.351, but the experimental coefficient is much higher. The analysis of WPE variations shows that the work with the wind guide screens at insignificant average air flow velocity during the set period of time appears to be more effective, than the work without them. If the air flow velocity increases, the wind power efficiency gradually decreases. Such a good fit between experimental data and analytical calculations is confirmed by comparison of F-test design criterion with its tabular values. In the design of wind turbines, it allows determining the wind turbine power, setting the geometrical parameters and mass of all details for their efficient performance.

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