scholarly journals Experimental Investigation of the Effects of Partial Shading on Photovoltaic Cells’ Electrical Parameters

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
W. B. Xiao ◽  
F. Y. Hu ◽  
H. M. Zhang ◽  
H. M. Wu
Keyword(s):  
Open Circuit Voltage ◽  
Short Circuit ◽  
Isosceles Triangle ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Electrical Parameters ◽  
Maximum Power Point ◽  
Partial Shading ◽  
Black Card ◽  
Power Point

The short-circuit current (Isc), the open-circuit voltage (Voc), and the maximum power point (VMPP,IMPP) of monocrystalline and multicrystalline silicon solar cells under three kinds of partial shading patterns have been investigated experimentally. The partial shades are, respectively, the nine shelter locations by 1 cm × 1 cm black card, the six shelter locations by 2 cm × 1 cm black card, and the center shelters with isosceles triangle, circle, square, and two rectangles black cards whose areas are 2 cm2. Firstly, the results show that the partial shading causes disproportional high losses on those parameters of both cells but will have a minimal effect onVoc. Secondly, it is found that those parameters of the monocrystalline cell are less dependent on the shading than that of the multicrystalline cell. Thirdly, it is noted thatIscandIMPPof both cells will be decreasing dramatically as a rectangular black shading card with a long side parallel to cell’s finger, compared with that normal to cell’s finger. Finally, it can be seen that the effects of shading on the electrical parameters of both cells will be suppressed when the border lines of shading match the size of the shaded cell.

scholarly journals Modélisation et commande d’un panneau photovoltaïque dans l’environnement PSIM

2019 ◽  
Author(s):  
Saad Motahhir ◽  
Abdelaziz El Ghzizal ◽  
Aziz Derouich
Keyword(s):  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Maximum Power ◽  
Physical Parameters ◽  
Maximum Power Point ◽  
Shunt Resistance ◽  
Photovoltaic Panel ◽  
Current Voltage ◽  
Power Point

The objective of this work is to make a model of photovoltaic cells (PV) dedicated to teaching renewable energy using PSIM software. This model is based on ratings provided by the manufacturer as: open circuit voltage, short circuit current, voltage and current corresponding to the maximum power point. So the resulting model has a better approach and takes into account the influence of different physical parameters including temperature, irradiation, series resistance, shunt resistance and saturation current of the diode. After a general presentation of the photovoltaic conversion chain, the article details, at first, the modeling of a photovoltaic panel. Secondly, we focus on the implementation of a MPPT command for controlling the DC / DC to operate the PV array at maximum power (MPP).

An Accurate and Efficient Analytical Method to Extract the Parameters of the Single and Double Diode Photovoltaic Cells Models

2017 ◽  
pp. 615-646
Author(s):  
Radouane Majdoul ◽  
Elhassane Abdelmounim ◽  
Mohamed Aboulfatah ◽  
Abd Elwahed Touati ◽  
Ahmed Moutabir
Keyword(s):  
Nonlinear Equation ◽  
Short Circuit ◽  
Photovoltaic Cells ◽  
Short Circuit Current ◽  
Accurate Method ◽  
Open Circuit ◽  
Photovoltaic Module ◽  
Maximum Power Point ◽  
Strongly Nonlinear ◽  
Power Point

For Photovoltaic systems designers and manufacturers, it is very important to develop suitable models to closely emulate the characteristics of PV cells, predict their behavior and evaluate their efficiency. So the main contribution of this chapter is to propose an improved and accurate method for identifying and determining the equivalent circuit elements values of photovoltaic module using only exact analytical equations and four manufacture's data reference, i.e., the open-circuit voltage (VOC), the short-circuit current (ISC), the current and the voltage at the maximum power point (IM, VM). In order to extract the five-parameter Single or Double-Diode models of photovoltaic module, the authors try initially to determine analytically all parameters according to RS (the value of the series resistance). Thus, all these parameters are calculated once RS is determined. Rapid and iterative algorithm is then designed to solve a strongly nonlinear equation in order to extract the value of RS in a precise manner and without any mathematical simplification used usually by many other authors.

An Accurate and Efficient Analytical Method to Extract the Parameters of the Single and Double Diode Photovoltaic Cells Models

2017 ◽  
pp. 1549-1580
Author(s):  
Radouane Majdoul ◽  
Elhassane Abdelmounim ◽  
Mohamed Aboulfatah ◽  
Abd Elwahed Touati ◽  
Ahmed Moutabir
Keyword(s):  
Nonlinear Equation ◽  
Short Circuit ◽  
Photovoltaic Cells ◽  
Short Circuit Current ◽  
Accurate Method ◽  
Open Circuit ◽  
Photovoltaic Module ◽  
Maximum Power Point ◽  
Strongly Nonlinear ◽  
Power Point

For Photovoltaic systems designers and manufacturers, it is very important to develop suitable models to closely emulate the characteristics of PV cells, predict their behavior and evaluate their efficiency. So the main contribution of this chapter is to propose an improved and accurate method for identifying and determining the equivalent circuit elements values of photovoltaic module using only exact analytical equations and four manufacture's data reference, i.e., the open-circuit voltage (VOC), the short-circuit current (ISC), the current and the voltage at the maximum power point (IM, VM). In order to extract the five-parameter Single or Double-Diode models of photovoltaic module, the authors try initially to determine analytically all parameters according to RS (the value of the series resistance). Thus, all these parameters are calculated once RS is determined. Rapid and iterative algorithm is then designed to solve a strongly nonlinear equation in order to extract the value of RS in a precise manner and without any mathematical simplification used usually by many other authors.

scholarly journals Performance Evaluation of PV Panel Configurations Considering PSC’s for PV Standalone Applications

2021 ◽  
Vol 54 (6) ◽  
pp. 847-852
Author(s):  
Asadi Suresh Kumar ◽  
Vyza Usha Reddy
Keyword(s):  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Electricity Production ◽  
Solar Pv ◽  
Pv System ◽  
Partial Shading ◽  
Pv Panel ◽  
Current Maximum ◽  
Power Point

One of the major concerns for continuous solar photovoltaic (PV) generation is partial shading. The movement of clouds, shadow of buildings, trees, birds, litter and dust, etc., can lead to partial shadow conditions (PSCs). The PSCs have caused inconsistent power losses in the PV modules. This leads to a shortage of electricity production and the presence in the PV curve of several peaks. One of the simplest solutions to PSC’s is the PV configurations. The objective of this paper is modelling and simulation of solar PV system in various shading scenarios for KC200GT 200 W, 5 x 5 configurations that includes Series/Parallel (SP), Total-Cross-Tied (TCT), Triple-Tied (TT), Bridge-Link (BL) configurations. Real time PSC’s such as corner, center, frame, random, diagonal, right side end shading conditions are evaluated under all PV array configurations. A comparative analysis is carried out for the parameters such as open circuit voltage, short circuit current, maximum power point, panel mismatch losses, fill factor, efficiency under all PV configurations considering PSC’s. From the comparison analysis best configuration will be presented.

Experimental and Validation of Photovoltaic Solar Cell Performance Models in Desert Climate

2014 ◽  
Vol 492 ◽  
pp. 135-142 ◽  
Author(s):  
Nouar Aoun ◽  
Rachid Chenni ◽  
Kada Bouchouicha
Keyword(s):  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Maximum Power ◽  
Photovoltaic Module ◽  
Maximum Power Point ◽  
Solar Cell Performance ◽  
Technical Data ◽  
Power Point ◽  
Desert Climate

This paper presents investigation of the performance and efficiency characteristic of the five-parameter model of photovoltaic module at desert environment. Experimental data under outdoor conditions can be given by the realistic mono-crystalline PV-panel operations in desert climate in the region of Adrar (0.18 W, 27.82 N), Algeria, and was studied. The available technical data over a period of three consecutive days include solar radiation, ambient temperature, open circuit voltage, short circuit current, maximum power point voltage, maximum power point current and the actual electrical output power. Finally, we compared and analyzed the modeled results and the actual experimental measurements. A good agreement between the simulated results and the field data are found.

scholarly journals The Effect of Temperature Variance with Different Surface Shapes on Efficiency of Silicon Thin Film Solar Cell

2021 ◽  
Author(s):  
Khalil Mahmoud ElKhamisy ◽  
Hamdy AbdElhamid ◽  
salah Elagooz ◽  
El-Sayed El-Rabaie
Keyword(s):  
Solar Cell ◽  
Open Circuit Voltage ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Effect Of Temperature ◽  
Optical Parameters ◽  
Electrical Parameters ◽  
Silicon Thin Film ◽  
Surface Grating

Abstract In this work, the temperature effects on the PV’s electrical and optical parameters of different surface gratings are studied. A 3D simulation is introduced for studying the PV’s electrical parameters such as short circuit current, open circuit voltage and efficiency at different levels of temperature with and without surface’s gratings. We observed that the efficiency is increased for PV of surface grating by about 4.87% compared to the free grating surface’s PV. The efficiency of the PV efficiency is degraded as we increased the temperature above 300K. The solar cell efficiency of gratings free is aggressively degraded compared to the solar cell that includes gratings by about 4.89% at 360K. The electrical parameters such as the open circuit voltage and short circuit current are enhanced compared to the PV of surface grating free. Also, we observed that the triangle grating geometry of dimensions about 10×10 nm produced a higher efficiency compared to the other PV of other grating geometries of same dimensions.

scholarly journals A Fault Detection Method for Photovoltaic Systems Based on Voltage and Current Observation and Evaluation

Energies ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1712 ◽  
Author(s):  
Tingting Pei ◽  
Xiaohong Hao
Keyword(s):  
Fault Detection ◽  
Detection Method ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Current Data ◽  
Partial Shading ◽  
Pv Array ◽  
Current Observation ◽  
Power Point

Photovoltaic (PV) power generation systems work chronically in various climatic outdoor conditions, therefore, faults may occur within the PV arrays in PV systems. Online fault detection for the PV arrays are important to improve the system’s reliability, safety and efficiency. In view of this, a fault-detection method based on voltage and current observation and evaluation is presented in this paper to detect common PV array faults, such as open-circuit, short-circuit, degradation and shading faults. In order to develop this detection method, fault characteristic quantities (e.g., the open-circuit voltage, short-circuit current, voltage and current at the maximum power point (MPP) of the PV array) are identified first to define the voltage and current indicators; then, the fault-detection thresholds are defined by utilizing voltage and current indicators according to the characteristic information of various faults; finally, voltage and current indicators evaluated at real-time voltage and current data are compared with the corresponding thresholds to detect potential faults and fault types. The performances of the proposed method are simulated verifying by setting eight different fault patterns in the PV array. Simulation experimental results show the effectiveness of the proposed method, especially the capacities of distinguishing the degradation faults, partial shading faults and variable shading faults.

scholarly journals Performance analysis of PV panel under varying surface temperature

2018 ◽  
Vol 144 ◽  
pp. 04004 ◽  
Author(s):  
Tripathi Abhishek Kumar ◽  
Ch. S. N Murthy ◽  
Aruna Mangalpady
Keyword(s):  
Surface Temperature ◽  
Power Output ◽  
Fill Factor ◽  
Open Circuit Voltage ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Electrical Parameters ◽  
Pv Panel ◽  
Panel Surface

The surface temperature of PV panel has an adverse impact on its performance. The several electrical parameters of PV panel, such as open circuit voltage, short circuit current, power output and fill factor depends on the surface temperature of PV panel. In the present study, an experimental work was carried out to investigate the influence of PV panel surface temperature on its electrical parameters. The results obtained from this experimental study show a significant reduction in the performance of PV panel with an increase in panel surface temperature. A 5W PV panel experienced a 0.4% decrease in open circuit voltage for every 1°C increase in panel surface temperature. Similarly, there was 0.6% and 0.32% decrease in maximum power output and in fill factor, respectively, for every 1°C increase in panel surface temperature. On the other hand, the short circuit current increases with the increase in surface temperature at the rate of 0.09%/°C.

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