scholarly journals Effect of Different Environmental Factors on Performance of Solar Panel

2019 ◽  
Vol 8 (11) ◽  
pp. 15-18
Keyword(s):  
Solar Cell ◽  
Environmental Factors ◽  
Light Intensity ◽  
Solar Panel ◽  
Renewable Sources ◽  
Solar Cell Performance ◽  
Renewable Source ◽  
Renewable Sources Of Energy ◽  
New Development ◽  
Day By Day

Solar power is future of our planet due to the depletion of non-renewable sources of energy. The renewable sources of energy are responsible for 80% of world’s power and we all are directly dependent on non-renewable source which will only last for 1 or 2 decades. Due to increase in power demands new development in renewable sources of energy are going on due to which on commercial level solar cell achieved an efficiency of 15-20% and improving day by day. Some factors affects the performance of solar panel and decreases its output while some factors improves the efficiency of solar cell and improves its performance. These factors includes temperature of solar panel, humidity, and wind velocity, light intensity, altitude and air pressure along with many other factors. In this paper these factors are discussed along with their impact on solar cell performance

Generation of Electricity by Vibrating Piezoelectric Crystal in Staircases

2017 ◽  
Vol 6 (2) ◽  
pp. 219
Author(s):  
Pankaj Aswal ◽  
Suyash Kumar Singh ◽  
Gayatri Sharma ◽  
Pooja Bisht ◽  
Shatakshi Singh
Keyword(s):  
Electrical Power ◽  
Mechanical Power ◽  
Piezoelectric Crystal ◽  
Renewable Sources ◽  
Renewable Sources Of Energy ◽  
Continuous Movement ◽  
Day By Day

A number of renewable or non-renewable sources of energy present these days are not able to meet our need of power. The need of power is increasing day by day as the population is increasing so we are finding different ways to generate power. In this paper we are generating power by walking on the stairs and the power which is generated can be stored for the further use. We can use this system in malls, homes, schools, companies, college, metro etc. When the group of people walk on these stairs, power is generated by the continuous movement of the persons. Here mechanical power is converted into electrical power. The power which is generated can be used to charge mobile.

scholarly journals Comparative Study of the Performance of Silicon Solar Panel at three Different Locations of Bangladesh

2018 ◽  
Vol 42 (1) ◽  
pp. 99-104
Author(s):  
Mohammad Asadul Haque ◽  
Md Takrim Alam Rifat
Keyword(s):  
Solar Cell ◽  
Light Intensity ◽  
Solar Panel ◽  
University Campus ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Academy Of Sciences ◽  
Geographical Locations ◽  
Atmospheric Variables ◽  
Main Factor

Solar cell is a device that converts photons into electricity. The performance of a solar cell depends on its efficiency. The efficiency of a solar cell depends on some atmospheric variables such as light intensity, temperature, pressure, wind, humidity, precipitation and the sky condition etc. Geographical locations are the main factor for the variation of atmospheric variables. Due to atmospheric variables the solar cell efficiency is not same for all places of the World. Solar cell has been analyzed from different approach to improve its efficiency. The objective of this research is to analyze the efficiency of a silicon solar panel at three different places: Chittagong University Campus, Sandwip Island and Shibpur thana of Narshingdi district of Bangladesh. The efficiency mostly depends on the light intensity and temperature, however slightly depends on humidity. The experimental study shows that among the three places Norshingdi district is more suitable for solar power with the efficiency of 16.25% than other two places, where the efficiencies are 15.7% at Chittagong University Campus and 15.83% at Sandwip Island.Journal of Bangladesh Academy of Sciences, Vol. 42, No. 1, 99-104, 2018

Probe of Field Collapse in a-Si:H Solar Cells

1996 ◽  
Vol 420 ◽  
Author(s):  
Qi Wang ◽  
Richard S. Crandall
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Light Intensity ◽  
Space Charge ◽  
Fill Factor ◽  
Illumination Intensity ◽  
Solar Cell Performance ◽  
Intensity Dependence ◽  
Low Levels ◽  
Good Agreement

AbstractWe study the effect of illumination intensity on solar cell performance in a-Si:H solar cells. We find that the fill factor strongly depends on light intensity. As we increase the illumination intensity from low levels to one sun we observe a decrease in fill factor of approximately 15% in as grown cells. We attribute this effect to electric field collapse inside the cell. We propose that photogenerated space charge (free and trapped charge) increases with light intensity and causes field collapse. We describe the origin of space charge and the associated capacitance - photocapacitance. We measure the photocapacitance as a barometer to probe the collapsed field. We obtain a good agreement between photocapacitance experiments and theory. We also explore the light intensity dependence of photocapacitance and explain the decrease of FF with the increasing light intensity.

scholarly journals Optimal attitude control for solar array orientation

2021 ◽  
Vol 30 (1) ◽  
pp. 73-82
Author(s):  
Qiang Li ◽  
Yu Jiang ◽  
Yan Zhang ◽  
Yu Gao ◽  
Xiaohong Guo ◽  
...  
Keyword(s):  
Solar Cell ◽  
Electric Power ◽  
Power Supply ◽  
Attitude Control ◽  
Low Earth Orbit ◽  
Solar Panel ◽  
Solar Array ◽  
Solar Cell Performance ◽  
Electric Power Supply ◽  
Cell Current

Abstract For low Earth orbit (LEO) satellites, solar panel is a firstly key device to convert the solar radiation into the electric power to supply the energy consume. However, the solar array is always suffering from the power degradation due to the harsh space environments. To meet the power balance in the end life of the spacecraft, attitude determination and control system (ADCS) plays an important role in the solar panel direction to change the solar energy input. Here, the solar cell performance parameters from an LEO satellite running on a dawn-dusk Sun synchronous orbit (SSO) are investigated. A yaw maneuver application is presented to satisfy the electric power supply (EPS) risk of the solar cell current decrease. Validated in the space operation, the results have shown that in the yaw mode, the EPS output is improved and the solar cell current is averagely enhanced more than 10% when the orbit incidence is 35°. The yaw maneuver is applied to the state of health (SOH) management with a better power supply. The solution can be widely and usefully taken into account to increase the solar array output for a near-Earth satellite in the risk of the power shortage.

scholarly journals Characterization of a Bifacial Photovoltaic Panel Integrated with External Diffuse and Semimirror Type Reflectors

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
P. Ooshaksaraei ◽  
K. Sopian ◽  
R. Zulkifli ◽  
M. A. Alghoul ◽  
Saleem H. Zaidi
Keyword(s):  
Power Generation ◽  
Solar Cell ◽  
Silicon Wafer ◽  
Rear Surface ◽  
Solar Panel ◽  
Back Surface ◽  
Solar Cell Performance ◽  
Photovoltaic Panel ◽  
Pv Panel ◽  
Diffuse Reflector

Silicon wafer accounts for almost one-half the cost of a photovoltaic (PV) panel. A bifacial silicon solar cell is attractive due to its potential of enhancing power generation from the same silicon wafer in comparison with a conventional monofacial solar cell. The bifacial PV cell is able to capture solar radiation by back surface. This ability requires a suitable reflector appropriately oriented and separated from the cell’s rear surface. In order to optimize the bifacial solar cell performance with respect to an external back surface reflector, diffuse and semimirror reflectors were investigated at various angles and separations from the back surface. A simple bifacial solar panel, consisting of four monocrystalline Si solar cells, was designed and built. Reflection from the rear surface was provided by an extended semimirror and a white-painted diffuse reflector. Maximum power generation was observed at 30° with respect to ground for the semimirror reflector and 10° for diffuse reflector at an optimized reflector-panel separation of 115 mm. Output power enhancement of 20% and 15% from semimirror and diffuse reflectors, respectively, were observed. This loss from diffuse reflector is attributed to scattering of light beyond the rear surface capture cross-section of the bifacial solar panel.

Different Solar Cell Performance under the Concentrator Conditions

2012 ◽  
Vol 455-456 ◽  
pp. 419-423
Author(s):  
Yuan Zhao ◽  
Ming Yu Sheng
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Solar System ◽  
Light Intensity ◽  
High Efficiency ◽  
Electronic Devices ◽  
Model Parameters ◽  
Solar Cell Performance ◽  
Output Characteristics ◽  
The Relationship

The photoelectrical responsibility of single photo-electronic devices makes it difficult to achieve the high efficiency under light intensity range. The key to overcome limits is to develop the system consisting of a set of solar cells. In this work, we predict the model parameters under various conditions combination of three model parameters change with the relationship between light and temperature and then predict the value of the model parameters under various conditions and thus predict the components of the output characteristics under 0.5S UN--6.0 SUN. The results given in this work will provide a way to realize a high photo-electric conversion efficiency of the solar system in application.

Experimental and Theoretical Comparable Study of Pure and Zinc Porphyrin Surface Modified ZnO Nanorod Arrays for Hybrid Solar Cell Applications

2020 ◽  
pp. 114-119
Keyword(s):  
Solar Cell ◽  
Electrochemical Impedance ◽  
Hybrid Solar Cell ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Annealing Effects ◽  
Vertically Aligned ◽  
Surface Modified

Experimental and theoretical study Porphyrin-grafted ZnO nanowire arrays were investigated for organic/inorganic hybrid solar cell applications. Two types of porphyrin – Tetra (4-carboxyphenyle) TCPP and meso-Tetraphenylporphine (Zinc-TPP)were used to modify the nanowire surfaces. The vertically aligned nanowires with porphyrin modifications were embedded in graphene-enriched poly (3-hexylthiophene) [G-P3HT] for p-n junction nanowire solar cells. Surface grafting of ZnO nanowires was found to improve the solar cell efficiency. There are different effect for the two types of porphyrin as results of Zn existing. Annealing effects on the solar cell performance were investigated by heating the devices up to 225 °C in air. It was found that the cell performance was significantly degraded after annealing. The degradation was attributed to the polymer structural change at high temperature as evidenced by electrochemical impedance spectroscopy measurements.

IDENTIFICATION OF STRATEGIC PRIORITIES OF INVESTMENT INTO DEVELOPMENT OF ALTERNATIVE ENERGETICS

2017 ◽  
pp. 52-59
Author(s):  
Svitlana Sivitska
Keyword(s):  
Social Work ◽  
International Cooperation ◽  
Alternative Energy ◽  
Associate Professor ◽  
Integrated Analysis ◽  
Energy Investment ◽  
Renewable Sources ◽  
Renewable Sources Of Energy ◽  
National Technical ◽  
The Matrix

UDC 338:336.02:621.311 Svitlana Sivitska, Ph.D., Associate Professor at Finance and Banking Department, Vice-Rector for Scientific, Educational, Social Work and International Cooperation. Poltava National Technical Yuri Kondratyuk University. Identification of strategic priorities of investment into development of alternative energetics. There are the stages of the methodology for choosing the strategic priorities of investing in alternative energy explored in the article. The potential of alternative energy analyzed. The strategic priorities of alternative energy have been explored. An integrated analysis of the potential of alternative energy is carried out on the territorial basis done. The matrix of choice of strategic priorities of investing in alternative energy determined. Keywords: energetic security, alternative energetics, renewable sources of energy, investment, strategic priorities, matrix.

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