Determining the optimal standard test condition correction procedure for high‐throughput field I – V measurements of photovoltaic modules

2021 ◽  
Author(s):  
Yogeswara Rao Golive ◽  
Anil Kottantharayil ◽  
Juzer Vasi ◽  
Narendra Shiradkar
Keyword(s):  
High Throughput ◽  
Standard Test ◽  
Correction Procedure ◽  
Photovoltaic Modules

scholarly journals An Improved Generalized Method for Evaluation of Parameters, Modeling, and Simulation of Photovoltaic Modules

2017 ◽  
Vol 2017 ◽  
pp. 1-19 ◽  
Author(s):  
Vandana Jha ◽  
Uday Shankar Triar
Keyword(s):  
Modeling And Simulation ◽  
Standard Test ◽  
Unknown Parameters ◽  
Photovoltaic Modules ◽  
Pv Module ◽  
Test Conditions ◽  
Pv Modules ◽  
Evaluation Of Parameters ◽  
Output Characteristics ◽  
Matlab Programming

This paper proposes an improved generalized method for evaluation of parameters, modeling, and simulation of photovoltaic modules. A new concept “Level of Improvement” has been proposed for evaluating unknown parameters of the nonlinear I-V equation of the single-diode model of PV module at any environmental condition, taking the manufacturer-specified data at Standard Test Conditions as inputs. The main contribution of the new concept is the improvement in the accuracy of values of evaluated parameters up to various levels and is based on mathematical equations of PV modules. The proposed evaluating method is implemented by MATLAB programming and, for demonstration, by using the values of parameters of the I-V equation obtained from programming results, a PV module model is build with MATLAB. The parameters evaluated by the proposed technique are validated with the datasheet values of six different commercially available PV modules (thin film, monocrystalline, and polycrystalline) at Standard Test Conditions and Nominal Operating Cell Temperature Conditions. The module output characteristics generated by the proposed method are validated with experimental data of FS-270 PV module. The effects of variation of ideality factor and resistances on output characteristics are also studied. The superiority of the proposed technique is proved.

scholarly journals Correction Procedures for Temperature and Irradiance of Photovoltaic Modules: Determination of Series Resistance and Temperature Coefficients by Means of an Indoor Solar Flash Test Device

2021 ◽  
Vol 65 (2-4) ◽  
pp. 264-270
Author(s):  
Silvia Luciani ◽  
Gianluca Coccia ◽  
Sebastiano Tomassetti ◽  
Mariano Pierantozzi ◽  
Giovanni Di Nicola
Keyword(s):  
Series Resistance ◽  
Experimental Tests ◽  
Standard Test ◽  
Operating Conditions ◽  
Test Device ◽  
Solar Simulator ◽  
Photovoltaic Modules ◽  
Current Voltage ◽  
And Control

The comparison between I-V (current-voltage) curves measured on site and I-V curves declared by the manufacturer allows to detect decrease of performance and control the degradation of photovoltaic modules and strings. On site, I-V curves are usually obtained under operating conditions (OPCs), i.e. at variable solar radiation and module temperature. OPC curves must be translated into standard test conditions (STCs), at a global irradiance of 1000 W/m2 and a module temperature of 25 °C. The correction at STC conditions allows to estimate the deviation between the power of the examined module and the maximum power declared by the manufacturer. A possible translation procedure requires two correction parameters: Rs’, the internal series resistance, and k’, the corresponding temperature coefficient. The aim of this work is to determine the correction parameters carrying out specific experimental tests as indicated by IEC 60891. A set of brand-new photovoltaic modules was experimentally characterized determining their I-V curves by means of an indoor solar flash test device based on a class A+ AM 1.5 solar simulator. Using the OPC I-V curves, obtained at several conditions of irradiance and temperature, it was possible to determine the correction parameters of the photovoltaic modules being considered.

scholarly journals Performance of Photovoltaic Modules of Different Solar Cells

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
Ankita Gaur ◽  
G. N. Tiwari
Keyword(s):  
Solar Cells ◽  
Minimum Cost ◽  
Electrical Energy ◽  
Energy Generation ◽  
Standard Test ◽  
Photovoltaic Modules ◽  
Test Conditions ◽  
Pv Modules ◽  
Electrical Energy Generation ◽  
Made In

In this paper, an attempt of performance evaluation of semitransparent and opaque photovoltaic (PV) modules of different generation solar cells, having the maximum efficiencies reported in the literature at standard test conditions (STC), has been carried out particularly for the months of January and June. The outdoor performance is also evaluated for the commercially available semitransparent and opaque PV modules. Annual electrical energy, capitalized cost, annualized uniform cost (unacost), and cost per unit electrical energy for both types of solar modules, namely, semitransparent and opaque have also been computed along with their characteristics curves. Semitransparent PV modules have shown higher efficiencies compared to the opaque ones. Calculations show that for the PV modules made in laboratory, CdTe exhibits the maximum annual electrical energy generation resulting into minimum cost per unit electrical energy, whereas a-Si/nc-Si possesses the maximum annual electrical energy generation giving minimum cost per unit electrical energy when commercially available solar modules are concerned. CIGS has shown the lowest capitalized cost over all other PV technologies.

High-throughput, outdoor characterization of photovoltaic modules by moving electroluminescence measurements

2019 ◽  
Vol 58 (08) ◽  
pp. 1 ◽  
Author(s):  
Bernd Doll ◽  
Tobias Pickel ◽  
Oliver Schreer ◽  
Cornelia Zetzmann ◽  
Johannes Hepp ◽  
...  
Keyword(s):  
High Throughput ◽  
Photovoltaic Modules

scholarly journals Benchmarking of the SW80 polycrystalline silicon modules using the sun as source of light

2014 ◽  
Vol 18 (suppl.2) ◽  
pp. 317-322
Author(s):  
Busiso Mtunzi ◽  
Edson Meyer
Keyword(s):  
South Africa ◽  
Polycrystalline Silicon ◽  
Standard Test ◽  
Meteorological Conditions ◽  
Bench Mark ◽  
The Sun ◽  
Measuring Instrument ◽  
Photovoltaic Modules ◽  
Test Conditions ◽  
Solar Noon

Benchmarking of modules is necessary as it helps to note any changes on the operation of the modules when in operation outdoors. The equipment needed to do this has been found to be very expensive hence the need of cheaper methods. This paper tries to show how this can be achieved using outdoor conditions and an I/V measuring instrument PVPM1000. SW80 photovoltaic modules were tested using outdoor conditions. The current and voltage measurements were taken at solar noon and converted to the standard test conditions (STC, 1000 Wm-2 AM 1.5 and 25?C). These normalized values were in turn taken as bench mark values of the modules. Future measurements can then be taken at solar noon and compared to benchmark values; any variations in performance can then be noted. The variations on benchmark values as compared to the manufacturer STC values for SW80 type module were noted. The measurements were carried out under typical South Africa meteorological conditions.

scholarly journals Automated phenotyping of mosquito larvae enables high-throughput screening for novel larvicides and smartphone-based detection of larval insecticide resistance

2020 ◽  
Author(s):  
Steven D. Buckingham ◽  
Frederick A. Partridge ◽  
Beth C. Poulton ◽  
Ben Miller ◽  
Rachel A. McKendry ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
High Throughput ◽  
High Throughput Screening ◽  
Pyrethroid Resistance ◽  
Standard Test ◽  
Mosquito Larvae ◽  
Mosquito Vector ◽  
Chemical Screening ◽  
Field Assay ◽  
Automated Phenotyping

AbstractPyrethroid-impregnated nets have contributed significantly to halving the burden of malaria but resistance threatens their future efficacy and the pipeline of new insecticides is short. Here we report that an invertebrate automated phenotyping platform (INVAPP), combined with the algorithm Paragon, provides a robust system for measuring larval motility in Anopheles gambiae (and An. coluzzi) as well as Aedes aegypti with the capacity for high-throughput screening for new larvicides. By this means, we reliably quantified both time- and concentration-dependent actions of chemical insecticides faster than using the WHO standard larval assay. We illustrate the effectiveness of the system using an established larvicide (temephos) and demonstrate its capacity for library-scale chemical screening using the Medicines for Malaria (MFP) Pathogen-Box library. As a proof-of-principle, this library screen identified a compound, subsequently confirmed to be tolfenpyrad, as an effective larvicide. We have also used the INVAPP / Paragon system to enable detection of resistance to deltamethrin. We show how this approach to monitoring larval susceptibility to insecticides can be adapted for use with a smartphone camera application and therefore has potential for further development as a simple portable field-assay for insecticide resistance with associated real-time, geo-located information to identify hotspots.Author summaryWe have developed an automated platform for recording the motility of mosquito larvae and applied it to larvae of a mosquito vector of malaria and a mosquito vector of dengue, Zika, yellow fever and other human diseases. The platform facilitates high-throughput, chemical screening for new compounds to control mosquito larvae and also allows detection of larval resistance to the pyrethroid insecticide deltamethrin. Pyrethroid-impregnated bednets have helped to halve the deaths from malaria in recent years but pyrethroid resistance is an important threat to this progress. Our approach assays insecticide actions faster than the current WHO standard test and we show that it can be adapted for use with a smartphone, which offers the prospect of a future field assay for resistance with the added benefit of precise satellite-based location.

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