scholarly journals Potential Analysis of Kavir & Desert Region and Makran Coasts In Order To Obtain Energy From the Sun Using Fuzzy Logic and AHP

2022 ◽  
Vol 21 (63) ◽  
pp. 1-18
Author(s):  
zahra hedjazizadeh ◽  
◽  
Aras Khosravi ◽  
Seyed Asaad Hosseini ◽  
Alireza Rahimi ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
The Sun ◽  
Potential Analysis ◽  
Desert Region

Evaluation of Solar Electric Power Technologies in Jordan Using Fuzzy Logic

2008 ◽  
Author(s):  
Omar Badran ◽  
Emad Abdulhadi ◽  
Rustom Mamlook
Keyword(s):  
Power Generation ◽  
Fuzzy Logic ◽  
Solar Radiation ◽  
Research And Development ◽  
Electric Power ◽  
The Sun ◽  
Power Capacity ◽  
Solar Ponds ◽  
Land Usage ◽  
High Solar Radiation

Jordan is considered one of the sun-belt countries, which possesses high solar radiation on its horizontal surface. The present study will be concerned on the uses of fuzzy sets methodology to perform evaluation between the most suitable solar technologies for power generation in Jordan, namely, solar ponds and photovoltaic (PV) technologies. The criterion of the evaluation were based on different parameters, i.e., power capacity, efficiency, availability, capacity factor, storage capability, cost, maturity, land usage and safety, they are planned as the technologies for the near foreseen term. Based on benefit to cost ratios, the results showed that photovoltaic technology found to be the better choice in terms of generating electricity, research and development and more effective programs of support and installation.

scholarly journals A comparison of two automatic solar tracking algorithms

2020 ◽  
Vol 152 ◽  
pp. 02009
Author(s):  
Motlatsi Lehloka ◽  
James Swart ◽  
Pierre Hertzog
Keyword(s):  
Fuzzy Logic ◽  
Fossil Fuels ◽  
Global Climate ◽  
Clean Energy ◽  
The Sun ◽  
Solar Pv ◽  
Pv System ◽  
Pv Module ◽  
Solar Pv System ◽  
Fixed Axis

Due to global climate change as a result of pollution caused by the burning of fossil fuels, the world has changed its view when it comes to power generation. The focus is now more on natural and clean energy, such as solar PV systems. An effective solar PV system is not a simple system, as the sun is not a stationery object. The sun moves from east to west daily and that makes the design and installation of an effective solar PV system challenging for optimal power harvesting. The purpose of this paper is to compare two algorithms (linear regression and fuzzy logic) that are applied to a dual-axis tracker in order to maximize the output power yield that may be obtained from a fixed-axis system. One fixed-axis PV module serves as the baseline for comparing the results of the dual-axis trackers that are controlled by the two algorithms. A key recommendation is to align a PV module perpendicular to the sun from sunrise to sunset using a control algorithm based on fuzzy logic principles in order to extract the maximum amount of available energy.

MEDIUM SIZE DUAL-AXIS SOLAR TRACKING SYSTEM WITH SUNLIGHT INTENSITY COMPARISON METHOD AND FUZZY LOGIC IMPLEMENTATION

2015 ◽  
Vol 77 (17) ◽  
Author(s):  
Azwaan Zakariah ◽  
Mahdi Faramarzi ◽  
Jasrul Jamani Jamian ◽  
Mohd Amri Md Yunus
Keyword(s):  
Fuzzy Logic ◽  
Solar Irradiance ◽  
Fuzzy Logic Controller ◽  
Solar Power ◽  
Tracking System ◽  
Medium Size ◽  
The Sun ◽  
Solar Pv ◽  
Pv Panel ◽  
Solar Tracking

Nowadays, renewable energy such as solar power has become important for electricity generation, and solar power systems have been installed in homes. Furthermore, solar tracking systems are being continuously improved by researchers around the world, who focus on achieving the best design and thus maximizing the efficiency of the solar power system. In this project, a fuzzy logic controller has been integrated and implemented in a medium-scale solar tracking system to achieve the best real-time orientation of a solar PV panel toward the sun. This project utilized dual-axis solar tracking with a fuzzy logic intelligent method. The hardware system consists of an Arduino UNO microcontroller as the main controller and Light Dependent Resistor (LDR) sensors for sensing the maximum incident intensity of solar irradiance. Initially, two power window motors (one for the horizontal axis and the other for the vertical axis) coordinate and alternately rotate to scan the position of the sun. Since the sun changes its position all the time, the LDR sensors detect its position at five-minute intervals through the level of incident solar irradiance intensity measured by them. The fuzzy logic controller helps the microcontroller to give the best inference concerning the direction to which the solar PV panel should rotate and the position in which it should stay. In conclusion, the solar tracking system delivers high efficiency of output power with a low power intake while it operates.

scholarly journals Evaluation and Design of Power Controller of Two-Axis Solar Tracking by PID and FL for a Photovoltaic Module

2020 ◽  
Vol 2020 ◽  
pp. 1-13 ◽  
Author(s):  
Joel J. Ontiveros ◽  
Carlos D. Ávalos ◽  
Faustino Loza ◽  
Néstor D. Galán ◽  
Guillermo J. Rubio
Keyword(s):  
Fuzzy Logic ◽  
Output Power ◽  
Tracking System ◽  
Weather Conditions ◽  
Lower Percentage ◽  
Photovoltaic Module ◽  
The Sun ◽  
Photovoltaic Modules ◽  
Solar Tracking ◽  
Solar Tracker

Solar trackers represent an essential tool to increase the energy production of photovoltaic modules compared to fixed systems. Unlike previous technologies where the aim is to keep the solar rays perpendicular to the surface of the module and obtain a constant output power, this paper proposes the design and evaluation of two controllers for a two-axis solar tracker, which maintains the power that is produced by photovoltaic modules at their nominal value. To achieve this, mathematical models of the dynamics of the sun, the solar energy obtained on the Earth’s surface, the two-axis tracking system in its electrical and mechanical parts, and the solar cell are developed and simulated. Two controllers are designed to be evaluated in the solar tracking system, one Proportional-Integral-Derivative and the other by Fuzzy Logic. The evaluation of the simulations shows a better performance of the controller by Fuzzy Logic; this is because it presents a shorter stabilization time, a transient of smaller amplitude, and a lower percentage of error in steady-state. The principle of operation of the solar tracking system is to promote the orientation conditions of the photovoltaic module to generate the maximum available power until reaching the nominal one. This is possible because it has a gyroscope on the surface of the module that determines its position with respect to the hour angle and altitude of the sun; a data acquisition card is developed to implement voltage and current sensors, which measure the output power it produces from the photovoltaic module throughout the day and under any weather conditions. The results of the implementation demonstrate that a Fuzzy Logic control for a two-axis solar tracker maintains the output power of the photovoltaic module at its nominal parameters during peak sun hours.

scholarly journals Formation and speciation of Sullage Water Natural Conduct analysis of Fuzzy logic Application by Solar Distillation

2018 ◽  
Vol 7 (2.24) ◽  
pp. 444 ◽  
Author(s):  
S Shanmugan ◽  
Selvaraju P ◽  
M Karthickeyan ◽  
A Saravanan ◽  
G Akash Kanna ◽  
...  
Keyword(s):  
Water Quality ◽  
Fuzzy Logic ◽  
Pure Water ◽  
Weather Condition ◽  
Clean Water ◽  
The Sun ◽  
Solar Distillation ◽  
Drinkable Water ◽  
Overall Efficiency ◽  
Thermal Techniques

The recital analysis of thermal techniques for sullage water treatment and fuzzy logic techniques are used to harvest clean water, drinkable water (H2O), fertilizer, ash impurity adding with cement from sullage water by using the energy of the sun. The experimental analysis of sullage water process is implemented of strong luminous that diurnal with weather condition in Vel Tech Multi Tech Dr. Rangarajan Dr Sakunthala Engineering College. It is an innovation to reduce the fluid waste and called water quality conversion. The suspended fluid waste changes the excellence of pure water and ash by thermal and fuzzy logic techniques. In this work is to analyze and compare between pure water and sullage water. It is analyzed of one of the days in the system have been given the 24 hr cycle, the total drip production of the proposed system is found to be 7.324 kg/m2day and without drip 4.952 kg/m2day and Overall efficiency is 36%. 

Chromospheric activity as a function of age in main-sequence stars

1966 ◽  
Vol 24 ◽  
pp. 40-43
Author(s):  
O. C. Wilson ◽  
A. Skumanich
Keyword(s):  
Main Sequence ◽  
The Sun ◽  
Main Sequence Stars ◽  
Tentative Conclusion ◽  
Chromospheric Activity ◽  
General Field ◽  
Large Clusters

Evidence previously presented by one of the authors (1) suggests strongly that chromospheric activity decreases with age in main sequence stars. This tentative conclusion rests principally upon a comparison of the members of large clusters (Hyades, Praesepe, Pleiades) with non-cluster objects in the general field, including the Sun. It is at least conceivable, however, that cluster and non-cluster stars might differ in some fundamental fashion which could influence the degree of chromospheric activity, and that the observed differences in chromospheric activity would then be attributable to the circumstances of stellar origin rather than to age.

Galactic orbits of stars

1966 ◽  
Vol 25 ◽  
pp. 93-97
Author(s):  
Richard Woolley
Keyword(s):  
Globular Cluster ◽  
Potential Field ◽  
High Velocity ◽  
Velocity Vector ◽  
Variable Stars ◽  
The Sun ◽  
Proper Motions ◽  
Rr Lyrae ◽  
The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

Seti Space Missions

1997 ◽  
Vol 161 ◽  
pp. 761-776 ◽  
Author(s):  
Claudio Maccone
Keyword(s):  
Electromagnetic Waves ◽  
Space Missions ◽  
Gravitational Lens ◽  
The Sun ◽  
Space Antenna ◽  
Focal Distance ◽  
Large Space ◽  
The Earth ◽  
Space Antennas ◽  
New Space

AbstractSETI from space is currently envisaged in three ways: i) by large space antennas orbiting the Earth that could be used for both VLBI and SETI (VSOP and RadioAstron missions), ii) by a radiotelescope inside the Saha far side Moon crater and an Earth-link antenna on the Mare Smythii near side plain. Such SETIMOON mission would require no astronaut work since a Tether, deployed in Moon orbit until the two antennas landed softly, would also be the cable connecting them. Alternatively, a data relay satellite orbiting the Earth-Moon Lagrangian pointL2would avoid the Earthlink antenna, iii) by a large space antenna put at the foci of the Sun gravitational lens: 1) for electromagnetic waves, the minimal focal distance is 550 Astronomical Units (AU) or 14 times beyond Pluto. One could use the huge radio magnifications of sources aligned to the Sun and spacecraft; 2) for gravitational waves and neutrinos, the focus lies between 22.45 and 29.59 AU (Uranus and Neptune orbits), with a flight time of less than 30 years. Two new space missions, of SETI interest if ET’s use neutrinos for communications, are proposed.

A Search for Dyson Spheres around Late-Type Stars in the Solar Neighborhood II

1997 ◽  
Vol 161 ◽  
pp. 707-709 ◽  
Author(s):  
Jun Jugaku ◽  
Shiro Nishimura
Keyword(s):  
Solar Neighborhood ◽  
The Sun ◽  
Late Type ◽  
Solar Type

AbstractWe continued our search for partial (incomplete) Dyson spheres associated with 50 solar-type stars (spectral classes F, G, and K) within 25 pc of the Sun. No candidate objects were found.

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