Evaluation of Calibrated Solar Cells and Pyranometers Regarding the Effective Irradiance Detected by PV Modules

Grünsteidl, S.; Mayer, Matthew T.; Wotruba, G.; Vodermayer, C.; Glotzbach, Thomas; Schulz, Björn

doi:10.4229/25theupvsec2010-4bv.1.116

Cited by 2 publications

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“…The use of reference cells can be beneficial by having a similar angular response, architecture, and material properties of the measured module [55]. Numerous studies have been conducted to analyze the different sensor technologies, with differing results [56][57][58][59][60][61][62][63][64].…”

Section: Translation Of I-v Characteristics To Stcmentioning

confidence: 99%

Measuring outdoor I–V characteristics of PV modules and systems

et al. 2022

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The cumulative installed capacity of photovoltaics has passed 1 TW, of which about two-thirds were only installed in the past five years. Many of these new installations incorporate novel module and cell designs that have not yet been subjected to long-term in-field characterization. Indoor accelerated stress testing has historically been a valuable methodology to identify fault mechanisms, estimate degradation rates, and to ensure the safety and normal operation of modules in the field. Still, these methodologies deliver an incomplete image of the exact stress mechanisms that photovoltaic systems are subject to outdoors, which vary with location, time of day, and time of year. In this work we review different outdoor methods to measure current-voltage characteristics of photovoltaic systems, discuss how the environmental conditions impact those characteristics, and examine alternative methodologies for acquiring light and pseudo current-voltage characteristics more applicable to larger scale installations. This review also provides an insight into methods useful for real-time monitoring and degradation analysis at the module and string level.

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Section: Translation Of I-v Characteristics To Stcmentioning

confidence: 99%

Measuring outdoor I–V characteristics of PV modules and systems

et al. 2022

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PV Panel Modeling: A Mobile Application for Modeling Photovoltaic Panels Using Datasheets Information

Tedeschi

Fulginei

Laudani

2015

2015 3rd International Conference on Future Internet of Things and Cloud

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Over the past years, different approaches have been proposed for circuital modeling photovoltaic modules. Most of these approaches introduce simplifications and/or approximations techniques or exploit inaccurate data interpolated from the plots representing panel characteristic curves: this in order to overcome the treatment of transcendental equations or to add points for numerical fitting. Unfortunately, this leads to ineffective algorithms and inaccurate results. In this work, we propose a fast and powerful mobile application, named PV Panel Modeling, for the identification of PV panels from datasheet. PV Panel Modeling is based on a complete theoretical and practical analysis on the extraction of one-diode model parameters. In particular, the proposed procedure separates the independent parameters from the dependent ones by using suitable algebraic manipulations of the commonly used equations. Hence, it is possible to verify the open circuit, short circuit and maximum power point conditions, and to reduce the dimensions of the search space of the parameters. The application and its core are designed in order to be cross-platform and ensure high performances. Here, we propose an implementation for handheld devices based on Android operating system. Finally, the obtained results have been validated on hundreds of PV panels belonging to the California Energy Commission database

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Evaluation of Calibrated Solar Cells and Pyranometers Regarding the Effective Irradiance Detected by PV Modules

Cited by 2 publications

References 0 publications

Measuring outdoor I–V characteristics of PV modules and systems

Measuring outdoor I–V characteristics of PV modules and systems

PV Panel Modeling: A Mobile Application for Modeling Photovoltaic Panels Using Datasheets Information

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