A robust parametrization method of photovoltaic modules for enhancing one-diode model accuracy under varying operating conditions

2021 ◽  
Vol 168 ◽  
pp. 764-778
Author(s):  
Chenxi Li ◽  
Yongheng Yang ◽  
Sergiu Spataru ◽  
Kanjian Zhang ◽  
Haikun Wei
Keyword(s):  
Operating Conditions ◽  
Model Accuracy ◽  
Photovoltaic Modules ◽  
Parametrization Method

scholarly journals Standardization of the energy performance of photovoltaic modules in real operating conditions

2014 ◽  
Vol 79 ◽  
pp. 03014 ◽  
Author(s):  
Davide Viganó ◽  
Robert P. Kenny ◽  
Harald Müllejans ◽  
Gianluca Alimonti
Keyword(s):  
Energy Performance ◽  
Operating Conditions ◽  
Photovoltaic Modules

scholarly journals Model for Staebler-Wronski Degradation Deduced from Long-Term, Controlled Light-Soaking Experiments

2000 ◽  
Vol 609 ◽  
Author(s):  
Bolko von Roedern ◽  
Joseph A. del Cueto
Keyword(s):  
Light Intensity ◽  
Amorphous Silicon ◽  
Operating Conditions ◽  
Degradation Mechanisms ◽  
Time Constants ◽  
Photovoltaic Modules ◽  
History Of ◽  
Exposure History ◽  
Operating History

ABSTRACTLong-term light-soaking experiments of amorphous silicon photovoltaic modules have now established that stabilization of the degradation occurs at levels that depend significantly on the operating conditions, as well as on the operating history of the modules. We suggest that stabilization occurs because of the introduction of degradation mechanisms with different time constants and annealing activation energies, depending on the exposure conditions. Stabilization will occur once a sufficient accumulation of different degradation mechanisms occurs. We find that operating module temperature during light-soaking is the most important parameter for determining stabilized performance. Next in importance is the exposure history of the device. The precise value of the light intensity seems least important in determining the stabilized efficiency, as long as its level is a significant fraction of 1-sun.

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 Educational Experimental Platform for Emulation of Photovoltaic Modules

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Srđan Lale ◽  
Milomir Šoja ◽  
Slobodan Lubura ◽  
Marko Ikić
Keyword(s):  
Simulation Model ◽  
Main Part ◽  
Current Mode ◽  
Operating Conditions ◽  
Experimental Platform ◽  
Photovoltaic Modules ◽  
Current Mode Control ◽  
Mode Control ◽  
Pv Module ◽  
The Given

This paper presents a one solution for photovoltaic (PV) emulator. A main part of the developed PV emulator is buckconverter with recently proposed new I2 dual current mode control (I2 DCMC). The given simulation and experimental resultsdemonstrate excellent performances of the proposed PV emulator: matching between the characteristics obtained from the developedmathematical (simulation) model of the PV module and from the PV emulator, adaptability to the emulated changes in solar insolationand temperature, simple and efficient manipulation with PV module parameters and operating conditions, which is useful especially foreducation purposes, and fast dynamics.

scholarly journals A New Strategy for Accurately PredictingI-VElectrical Characteristics of PV Modules Using a Nonlinear Five-Point Model

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Sakaros Bogning Dongue ◽  
Donatien Njomo ◽  
Lessly Ebengai
Keyword(s):  
Experimental Data ◽  
Nonlinear Effect ◽  
Solar Irradiance ◽  
Great Accuracy ◽  
Operating Conditions ◽  
Point Model ◽  
Photovoltaic Modules ◽  
Pv Modules ◽  
Good Comparison ◽  
New Strategy

This paper presents the modelling of electricalI-Vresponse of illuminated photovoltaic crystalline modules. As an alternative method to the linear five-parameter model, our strategy uses advantages of a nonlinear analytical five-point model to take into account the effects of nonlinear variations of current with respect to solar irradiance and of voltage with respect to cells temperature. We succeeded in this work to predict with great accuracy theI-Vcharacteristics of monocrystalline shell SP75 and polycrystalline GESOLAR GE-P70 photovoltaic modules. The good comparison of our calculated results to experimental data provided by the modules manufacturers makes it possible to appreciate the contribution of taking into account the nonlinear effect of operating conditions data onI-Vcharacteristics of photovoltaic modules.

scholarly journals Outdoor testing of photovoltaic modules during summer in Taxila, Pakistan

2016 ◽  
Vol 20 (1) ◽  
pp. 165-173 ◽  
Author(s):  
Hafiz Ali ◽  
Mubashar Mahmood ◽  
Muhammad Bashir ◽  
Muzaffar Ali ◽  
Aysha Siddiqui
Keyword(s):  
Amorphous Silicon ◽  
Operating Conditions ◽  
Performance Ratio ◽  
Published Data ◽  
Photovoltaic Modules ◽  
Efficiency Performance ◽  
Higher Temperature ◽  
Low Efficiency ◽  
And Performance ◽  
Module Efficiency

An experimental study has been carried out to measure the performance of commercially available photovoltaic modules during summer months in the climate of Taxila, near the capital of Pakistan. The modules used in the study are monocrystalline silicon (c-Si), polycrystalline silicon (p-Si) and single junction amorphous silicon (a-Si). The analysis has been focused on the measurement of module efficiency, performance ratio and temperature of each module at actual operating conditions using outdoor monitoring facility. The measured results are compared with the already published data of peak winter month at the same site. Overall, the monocrystalline module showed high average module efficiency while amorphous silicon module was better in term of average performance ratio. Furthermore, the module efficiency and performance ratio has shown decreasing trend with increase of module temperature. It was found that modules have much higher temperature in summer months (about 20?C higher) and showed low efficiency and performance ratio than peak winter month. The average ambient temperature varied from 18.1?C to 38.6?C from winter to summer.

Sign in / Sign up

Export Citation Format

Share Document