Analysis and Characterization of Thermographic Defects at the PV Module Level

2019 ◽  
pp. 80-93
Author(s):  
Sara Gallardo-Saavedra ◽  
Luis Hernández-Callejo ◽  
Óscar Duque-Pérez
Keyword(s):  
Pv Module

Measurements and Characterization of Photovoltaic Modules for Tolerance Verification

2013 ◽  
pp. 144-152
Author(s):  
C. Calò ◽  
A. Lay-Ekuakille ◽  
P. Vergallo ◽  
C. Chiffi ◽  
A. Trotta ◽  
...  
Keyword(s):  
Digital Imaging ◽  
Failure Mechanisms ◽  
Matrix Methods ◽  
Energy Prediction ◽  
Photovoltaic Modules ◽  
Pv Module ◽  
Pv Modules ◽  
Tolerance Verification ◽  
Material Tests

One of the most important aspects of photovoltaic modules is reliability for future uses, that is, a certain module will last certain number of years in use (generally 30 or 35 years). Reliability yields from excellent qualification tests on photovoltaic (PV) modules. Testing for reliability identifies unknown failure mechanisms and whether modules are susceptible to known failure mechanisms. This paper illustrates techniques of outdoor measurements and qualification characterization to know PV module conditions for commercial uses. Matrix methods are used for energy prediction. Failure material tests, using digital imaging and thermography, have also been conducted.

scholarly journals Combined Spatially Resolved Characterization of Antireflection and Antisoiling Coatings for PV Module Glass

2020 ◽  
Vol 22 (4) ◽  
pp. 197-203 ◽  
Author(s):  
Stephanie L. Moffitt ◽  
Conor Riley ◽  
Benjamin H. Ellis ◽  
Robert A. Fleming ◽  
Corey S. Thompson ◽  
...  
Keyword(s):  
Spatially Resolved ◽  
Pv Module

scholarly journals Analysis and characterization of PV module defects by thermographic inspection

2019 ◽  
pp. 92-104 ◽  
Author(s):  
Sara Gallardo-Saavedra ◽  
Luis Hernández-Callejo ◽  
Oscar Duque-Perez
Keyword(s):  
Subsequent Development ◽  
Maximum Temperature ◽  
Safety Issues ◽  
Photovoltaic Modules ◽  
Average Temperature ◽  
Pv Module ◽  
Module Size ◽  
A Cell ◽  
Temperature Standard

Being able to detect, to identify and to quantify the severity of defects that appear within photovoltaic modules is essential to constitute a reliable, efficient and safety system, avoiding energy losses, mismatches and safety issues.  The main objective of this paper is to perform an in-depth, onsite study of 17,142 monocrystalline modules to detect every single existing defect, classifying them in different groups, studying the variance of the same kind of defect in different modules and the patterns of each group of thermal defects. Results can be useful in a subsequent development of a software to automatically detect if a module has an anomaly and its classification. Focusing on the results obtained, all faults detected have been classified in five different thermographic defects modes: hotspot in a cell, bypass circuit overheated, hotspot in the junction box, hotspot in the connection of the busbar to the junction box and whole module overheated. An analysis of patterns of the different defects is included, studiyng location within the module, size and temperature statistical results, as average temperature, standard deviation, maximum temperature, median and first and third quartile.

scholarly journals Design and Implementation of a Photovoltaic Characterization Platform at FaST

2021 ◽  
Vol 1 ◽  
Author(s):  
Moudjibatou Afoda ◽  
N’detigma Kata ◽  
Dambé Douti ◽  
Hodo-Abalo Samah ◽  
Séidou Maiga
Keyword(s):  
Weather Conditions ◽  
External Factors ◽  
Added Value ◽  
Additional Information ◽  
Pv Module ◽  
Rigorous Study ◽  
Sub Saharan ◽  
Photovoltaic Characterization ◽  
Electronic Load

The site that houses the FaST faces high dusty winds and considerable temperature variation. Weather conditions such as solar radiation, temperature, and wind speed greatly affect the performance of PV modules. But the data from PV equipment manufacturers do not allow for proper sizing. Therefore, a rigorous study is needed to find the most suitable PV module technology for the study area. For this purpose, platforms for the acquisition of meteorological parameters and module characterization are indispensable. This platform project at FaST will serve training and pedagogy because its configuration will allow master and bachelor students to carry out practical work, to carry out studies on new cell technologies under the influence of external factors specific to the sub-Saharan zone and will bring an added value by providing additional information on real conditions and especially the influence of local external factors. Our study consisted first of all in the realization of the platform on the roof of the FaST, then in the design and the programming of a module of acquisition of the measured parameters on the basis of the Arduino microcontroller card and finally in the test of characterization of the modules used for the platform thanks to an electronic load on the basis of MOSFET of power controlled by a microcontroller that we realized.

scholarly journals Thermographic and electrical characterization of a photovoltaic panel under partial shading conditions: a case study

ACTA IMEKO ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 93
Author(s):  
Giovanni Bucci ◽  
Fabrizio Ciancetta ◽  
Edoardo Fiorucci ◽  
Antonio Delle Femine
Keyword(s):  
Electrical Characterization ◽  
Testing Procedure ◽  
Pv System ◽  
Partial Shading ◽  
Photovoltaic Panel ◽  
Pv Module ◽  
Pv Modules ◽  
Consequent Reduction

<p class="Abstract">Shading is one of the most critical factors that produces a reduction in power in photovoltaic (PV) modules. The main causes of shading are related to cloud cover; local specificity; natural characteristics; building and other civil works; and the presence of the PV system itself. A reduction in overall radiation produces a consequent reduction in electric power. Another more problematic effect is associated with the partial shading of the PV modules. The shaded cell behaves as a load, dissipating energy and increasing its temperature. This effect can involve irreversible changes to the PV module, with a decrease in performance that can even cause the destruction of the shaded cell.</p><p>The main aim of this work is the development of a testing procedure for the performance evaluation of commercial PV modules in the presence of partial shading on one cell. Tests were carried out using thermographic and electric measurements and by varying the shading levels according to IEC standards. Shading up to total darkening is achieved by means of a number of filters that reduce the direct solar irradiance.</p><p>As a case study, a complete characterisation of a 180 Wp polycrystalline PV module was performed according to the proposed testing procedure, showing that high temperatures can be measured on the shaded PV module surface even if only 50 % of the surface of one cell of the PV module is darkened.</p>

scholarly journals Outdoor Performance Characterization of the Poly-crystalline Silicon Solar Module

2018 ◽  
Vol 16 (1) ◽  
pp. 13-19
Author(s):  
Indra Bahadur Karki
Keyword(s):  
Temperature Coefficient ◽  
Crystalline Silicon ◽  
Short Circuit ◽  
Outdoor Environment ◽  
Positive Temperature ◽  
Solar Pv ◽  
Solar Module ◽  
Performance Characterization ◽  
Pv Module

The outdoor performance characterization of the poly-crystalline silicon solar PV module was studied. Daily solar illumination data were measured using two pyranometers and analyzed together with the module output power. The present paper reports the temperature dependencies of full-spectrum photovoltaic parameters for poly-crystalline PV module. The measurements were performed under outdoor environment conditions. The most interesting feature that was observed for these devices is that above a cell temperature of 20 0C the positive temperature coefficient observed for the short-circuit current exceeds in magnitude the negative temperature coefficient that was found for the open-circuit voltage. This means that, unlike the situation for conventional PV module, these cells actually exhibit decrease in efficiency with increasing temperatureJournal of Science Foundation 2018;16(1):13-19

A New Approach to Indoor Characterization of PV Module Energy Yield Parameters

2019 ◽  
Author(s):  
Paul F. Ndione ◽  
Carl R. Osterwald ◽  
Larry Ottoson ◽  
Andrew M. Gabor ◽  
Dean H. Levi
Keyword(s):  
Energy Yield ◽  
New Approach ◽  
Pv Module ◽  
Yield Parameters

Characterization of direct- and back-scribing laser patterning of SnO2:F for a-Si:H PV module fabrication

2013 ◽  
Vol 271 ◽  
pp. 223-227 ◽  
Author(s):  
D. Canteli ◽  
I. Torres ◽  
J.J. García-Ballesteros ◽  
J. Cárabe ◽  
C. Molpeceres ◽  
...  
Keyword(s):  
Laser Patterning ◽  
Pv Module

Characterization of Real-world and Accelerated Exposed PV Module Backsheet Degradation

2019 ◽  
Author(s):  
Raymond Wieser ◽  
Yu Wang ◽  
Andrew Fairbrother ◽  
Sophia Napoli ◽  
Scott Julien ◽  
...  
Keyword(s):  
Real World ◽  
Pv Module
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