Results 11 to 20 of about 1,938 (181)

Blind photovoltaic modeling intercomparison: A multidimensional data analysis and lessons learned

Progress in Photovoltaics: Research and Applications, Volume 31, Issue 11, Page 1144-1157, November 2023., 2023
In this blind photovoltaic modeling intercomparison, most software and models exhibited similar results indicating good reproducibility among participants, especially when compared with the 2010 PVPMC intercomparison. For example, the spread in estimated annual energy yield among PVsyst participants is now ~6% compared with ~33% in 2010.
Marios Theristis, Nicholas Riedel‐Lyngskær, Joshua S. Stein, Lelia Deville, Leonardo Micheli, Anton Driesse, William B. Hobbs, Silvana Ovaitt, Rajiv Daxini, David Barrie, Mark Campanelli, Heather Hodges, Javier R. Ledesma, Ismael Lokhat, Brendan McCormick, Bin Meng, Bill Miller, Ricardo Motta, Emma Noirault, Megan Parker, Jesús Polo, Daniel Powell, Rodrigo Moretón, Matthew Prilliman, Steve Ransome, Martin Schneider, Branislav Schnierer, Bowen Tian, Frederick Warner, Robert Williams, Bruno Wittmer, Changrui Zhao   +31 more
wiley   +1 more source

Low‐cost outdoor spectral irradiances determination and its application on Concentrator Photovoltaic module power rating and energy yield calculation

Progress in Photovoltaics: Research and Applications, Volume 31, Issue 6, Page 591-597, June 2023., 2023
A simple method to calculate the aerosol content in the atmosphere and the prevailing spectral irradiance of the sunlight is introduced. A weather station and a pyrheliometer are sufficient for the determination of the prevailing spectral irradiance using this method.
Marc Steiner, Juan F. Martínez, Paresh Mathur, Subrata Sarkar, Gerald Siefer   +4 more
wiley   +1 more source

A density‐based time‐series data analysis methodology for shadow detection in rooftop photovoltaic systems

Progress in Photovoltaics: Research and Applications, Volume 31, Issue 5, Page 506-523, May 2023., 2023
In this study, a new algorithmic tool is introduced that creates a reference data set through the combination of data sets of the unshaded PV systems in the surrounding area. It subsequently compares the created reference data set with the one of the PV systems of interest, detects any energy loss and clusters the distinctive loss due to shadow ...
Odysseas Tsafarakis, Wilfried G.J.H.M. van Sark   +1 more
wiley   +1 more source

COVID‐19 Pandemic Reveals Distinct Impact of Aerosols on Surface Solar Radiation in China

Geophysical Research Letters, Volume 50, Issue 5, 16 March 2023., 2023
Abstract With the abrupt and significant drop of PM2.5 concentrations during the lockdown in 2020, hourly direct radiation (Rdir) at surface substantially increased in East China, such as Zhengzhou, Wuhan and Baoshan, with the maximum enhancement of 86% at Wuhan. Most of these stations had decreased diffuse radiation (Rdif) except Zhengzhou.
Xin Yang, Zhigang Li, Zhanyu Yao, Hong Tang, Shili Yang, Lu Chen   +5 more
wiley   +1 more source

Spectral influence analysis on sunshine duration measurement

The Journal of Engineering, 2019
Sunshine duration is an important variable in surface meteorological measurement. In this article, two methods for measuring sunshine duration are described, one is photovoltaic-based instrument, which ranges from 400 to 1100 nm, and the other is ...
Wei Chong, Wenhua Lyu, Zeqiang Bian, Lei Ding, Songkui Li, Tao Zeng   +5 more
doaj   +1 more source

Proxy-based reconstruction of erythemal UV doses over Estonia for 1955–2004 [PDF]

Annales Geophysicae, 2006
A proxy-based reconstruction of the erythemally-weighted UV doses for 1955-2004 has been performed for the Tartu-Tõravere Meteorological Station (58°16' N, 26°28' E, 70 m a.s.l.) site.
K. Eerme, U. Veismann, S. Lätt
doaj   +1 more source

Reconciling Observations of Solar Irradiance Variability With Cloud Size Distributions

Journal of Geophysical Research: Atmospheres, Volume 128, Issue 5, 16 March 2023., 2023
Abstract Clouds cast shadows on the surface and locally enhance solar irradiance by absorbing and scattering sunlight, resulting in fast and large solar irradiance fluctuations on the surface. Typical spatiotemporal scales and driving mechanisms of this intra‐day irradiance variability are not well known, hence even 1 day ahead forecasts of variability
Wouter B. Mol, Bart J. H. van Stratum, Wouter H. Knap, Chiel C. van Heerwaarden   +3 more
wiley   +1 more source

Time‐varying, ray tracing irradiance simulation approach for photovoltaic systems in complex scenarios with decoupled geometry, optical properties and illumination conditions

Progress in Photovoltaics: Research and Applications, Volume 31, Issue 2, Page 134-148, February 2023., 2023
In this work, we present an irradiance simulation approach to calculate the irradiance of photovoltaic modules installed in geometrically complex scenarios. In the proposed approach, the ray tracing calculations are independent from the reflectivity of the surfaces and the illumination conditions, which enables high‐resolution spectral irradiance ...
Calcabrini Andres, Cardose Ruben, Gribnau David, Babal Pavel, Manganiello Patrizio, Zeman Miro, Isabella Olindo   +6 more
wiley   +1 more source

Skyvelære (While Attempting to Balance)

InFormation: Nordic Journal of Art and Research, 2013
The video Skyvelære (While Attempting to Balance) portrays the 11th International Pyrheliometer Comparison Event (IPC-XI). Here, metrologists representing 45 different countries, accomplished the meticulous calibration of their Pyrheliometers, an ...
Ellen Johanne Røed
doaj   +1 more source

A Power Case Study for Monocrystalline and Polycrystalline Solar Panels in Bursa City, Turkey

International Journal of Photoenergy, 2016
It was intended to reveal the time dependent power generation under different loads for two different solar panels under the conditions of Bursa province in between August 19 and 25, 2014.
Ayşegül Taşçıoğlu, Onur Taşkın, Ali Vardar   +2 more
doaj   +1 more source