scholarly journals An Experimental Analysis of Illumination Intensity and Tilt Angle Dependency of Photovoltaic Cell Electric Output Parameters

2020 ◽  
Vol 8 (2) ◽  
pp. 15-21
Author(s):  
K.M. Omatola ◽  
◽  
◽  
V.I. Sule
Keyword(s):  
Tilt Angle ◽  
Experimental Analysis ◽  
Photovoltaic Cell ◽  
Illumination Intensity

Implementation of digital temperature control system on photovoltaic cell model: An experimental analysis

Optik ◽  
2019 ◽  
Vol 176 ◽  
pp. 324-333 ◽  
Author(s):  
Asita Samal ◽  
A. Mohanty ◽  
P.K. Ray ◽  
S. Mohanty ◽  
P.P. Mohanty
Keyword(s):  
Control System ◽  
Temperature Control ◽  
Experimental Analysis ◽  
Cell Model ◽  
Photovoltaic Cell ◽  
Temperature Control System

Experimental analysis of tilt angle-dependent dynamic properties of a 5-axis milling center

2021 ◽  
Author(s):  
Andreas Wirtz ◽  
Ines Wilck ◽  
Nils Schmidt ◽  
Dirk Biermann ◽  
Petra Wiederkehr
Keyword(s):  
Tilt Angle ◽  
Experimental Analysis ◽  
Dynamic Properties

scholarly journals Avaliação do impacto de sombreamentos parciais em um sistema fotovoltaico com microinversor

2019 ◽  
pp. 199-208
Author(s):  
Caio Felippe Abe ◽  
João Batista Dias
Keyword(s):  
Experimental Analysis ◽  
Photovoltaic Cell ◽  
The Other ◽  
Photovoltaic Module ◽  
Electrical Measurements ◽  
Cell Temperature ◽  
Maximum Power Point ◽  
Partial Shading ◽  
Curve Tracer ◽  
Power Point

Resumo Este trabalho apresenta uma avaliação do efeito de sombreamentos parciais em um módulo fotovoltaico por meio de simulação e análise experimental, considerando um sistema conectado à rede elétrica da concessionária com topologia de microinversor. Para as simulações, considerou-se um modelo elétrico da célula fotovoltaica, assim como métodos para identificação e translação de seus parâmetros, de acordo com as condições de irradiância solar e temperatura das células. Por sua vez, a avaliação experimental foi realizada através de medições de variáveis elétricas em um módulo fotovoltaico, o que foi feito empregando um traçador de curvas. Os resultados mostram que o sombreamento, além de reduzir a potência disponibilizada pelo módulo fotovoltaico, pode levar a tensão do ponto de máxima potência do módulo para valores fora da faixa de operação do microinversor, causando perdas adicionais no sistema. Palavras-chave: Sistemas fotovoltaicos. Microinversor. Sombreamentos parciais. Abstract This paper presents an evaluation of partial shading effect in a photovoltaic module through simulation and experimental analysis, considering a system connected to the utility grid with microinverter topology. For the simulations, an electric model of the photovoltaic cell has been considered, as well as methods for identification and translation of its parameters, according to the solar irradiance and cell temperature conditions. On the other hand, the experimental evaluation has been carried out by performing electrical measurements in a photovoltaic module, which was done using a curve tracer. The results show that shading, in addition to reducing the power provided by the photovoltaic module, can take the maximum power point voltage to values outside the microinverter operating range, causing additional system losses. Keywords: Photovoltaic systems. Microinverter. Partial shadings.

scholarly journals An Experimental Analysis on Operating Parameter’s Influence on Friction Stir Welding/processing

2019 ◽  
Vol 8 (6) ◽  
pp. 5095-5098
Keyword(s):  
Friction Stir Welding ◽  
Tilt Angle ◽  
Experimental Analysis ◽  
Joint Effect ◽  
Tool Geometry ◽  
Friction Stir ◽  
Tool Tilt Angle ◽  
Basic Standard ◽  
Article Influence

This paper clarifies the basic standard and procedure of FSW. It consists all the specialized characteristic which influences the procedure and excellence of FSW joint. Effect on every form of joint setup is taken into consideration. All the methodological parts of FSW tool geometry and material of tool is taken. In this article influence of essential parameters like tool rpm, tool feed, tool tilt angle, downward command and tool depression time on joining quality has been calculated. Finally, the fields on which further more exploration can be carried out has been identified.

Analysis of Technological Head Working Pressure, Tilt Angle and Shift Impact to its Vibrations Using AWJ Technology

2014 ◽  
Vol 616 ◽  
pp. 159-166 ◽  
Author(s):  
Luba Bicejova ◽  
Stanislav Fabian
Keyword(s):  
Tilt Angle ◽  
Experimental Analysis ◽  
Manufacturing System ◽  
Working Condition ◽  
Head Tilt ◽  
Water Medium ◽  
Vibration Acceleration ◽  
Working Pressure ◽  
Acceleration Amplitude ◽  
Condition Diagnosis

The paper deals with an experimental analysis of a technological head tilt angle impact to vibration generation. The search of the technological head tilt influence is performed for three technological head shift speeds and for three abrasive water medium pressure values. From graphic records showing relation of vibration acceleration amplitude to its frequency, a group of 9 comparative frequency envelope graphs for two tilt angles and three technological medium analyzed pressures for each of three speeds of the head shift is created. On the base of the frequency envelope comparative graphs a discussion and formulated conclusion are stated. The paper presents a thematically integrated part of the thesis and complements recent knowledge on water jet technology manufacturing system working condition diagnosis.

Experimental Analysis of the Nusselt Number for Jet Impingement on a Flat Plate

2009 ◽  
Author(s):  
Gerardo Carbajal ◽  
G. P. Peterson ◽  
C. B. Sobhan
Keyword(s):  
Nusselt Number ◽  
Flat Plate ◽  
Tilt Angle ◽  
Local Nusselt Number ◽  
Experimental Analysis ◽  
Jet Impingement ◽  
Maximum Heat ◽  
Average Temperature ◽  
Maximum Heat Flux ◽  
Constant Rate

An experimental analysis was performed to calculate the local Nusselt number associated with the impingement of a jet of hot gases on a steel flat plate. A plate was subjected to a constant-rate propane torch, with a measured average temperature of the hot gases at approximately 896 °C. The jet was applied to the flat plate at different angles of 45, 60, 75 and 90 degrees. The jet was horizontally located at 0.044m away from the flat plate and experiments were performed with two different vertical distances. The temperature distribution on the front and back sides of the plate were recorded by using 20 thermocouples. The plate reached steady-state conditions after 4100 seconds. The unheated side was cooled by combined natural convection and radiative effects. To perform the experiment, the steel plate was mounted on a tubular apparatus that holds the plate vertically, with a provision to change the angle of impingement. It was found that the combined effects of tilt angle and vertical switch reduce the local Nusselt number, by 51% for a tilt angle equal to 45 degrees. The maximum heat flux at the center of the plate was found to be 15.5 kW/m2.

The dislocation structure of a 10° [110] tilt boundary in silicon

1983 ◽  
Vol 41 ◽  
pp. 114-115
Author(s):  
B. Cunningham ◽  
D.G. Ast
Keyword(s):  
Dislocation Structure ◽  
Tilt Angle ◽  
Imaging Technique ◽  
Diamond Lattice ◽  
Tilt Boundary ◽  
Formation Mechanisms ◽  
Diffraction Contrast ◽  
Lattice Fringe ◽  
Tilt Boundaries ◽  
Chemically Vapor Deposited

There have Been a number of studies of low-angle, θ < 4°, [10] tilt boundaries in the diamond lattice. Dislocations with Burgers vectors a/2<110>, a/2<112>, a<111> and a<001> have been reported in melt-grown bicrystals of germanium, and dislocations with Burgers vectors a<001> and a/2<112> have been reported in hot-pressed bicrystals of silicon. Most of the dislocations were found to be dissociated, the dissociation widths being dependent on the tilt angle. Possible dissociation schemes and formation mechanisms for the a<001> and a<111> dislocations from the interaction of lattice dislocations have recently been given.The present study reports on the dislocation structure of a 10° [10] tilt boundary in chemically vapor deposited silicon. The dislocations in the boundary were spaced about 1-3nm apart, making them difficult to resolve by conventional diffraction contrast techniques. The dislocation structure was therefore studied by the lattice-fringe imaging technique.

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