Premium
Influence of initial power stabilization over crystalline‐Si photovoltaic modules maximum power
Author(s) -
Munoz M.A.,
Chenlo F.,
AlonsoGarcía M.C.
Publication year - 2011
Publication title -
progress in photovoltaics: research and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.286
H-Index - 131
eISSN - 1099-159X
pISSN - 1062-7995
DOI - 10.1002/pip.1052
Subject(s) - power (physics) , photovoltaic system , work (physics) , power module , maximum power principle , electrical engineering , power loss , crystalline silicon , materials science , reliability engineering , computer science , automotive engineering , environmental science , mechanical engineering , optoelectronics , engineering , physics , solar cell , thermodynamics
Measurements that suppliers offer in specification sheets are not always close to the actual power measured in independent laboratories such as CIEMAT. Independent measurements tend to be lower than those printed on the label sometimes even lower than the allowed tolerance indicated by the manufacturer on the same label. Furthermore, a potentially significant power reduction has been reported when Standard EN50380 (which requires photovoltaic (PV) modules to be exposed to more than 20 kWh/m 2 of sunlight prior to taking the measurements that appear on the label) is followed. This is the initial power stabilization and this work studies the power stabilization that tends to appear in crystalline PV modules. Crystalline PV modules usually decrease in power around 1%, but decreases >4% have also been reported. These power losses are only detected after the mentioned power stabilization. Copyright © 2010 John Wiley & Sons, Ltd.