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Title:
 
Simplified Prediction of the Impact of Building Integrated Photovoltaic Modules Ageing on Their Performance
 
Author(s):
 
Y.B. Assoa, A. Rhone, P. Thony, F. Chabuel
 
Keywords:
 
Degradation, Modelling / Modeling, Building Integrated Photovoltaic (BIPV)
 
Topic:
 
PV Applications, Integration and Storage
Subtopic: PV on/in Buildings
Event: 38th European Photovoltaic Solar Energy Conference and Exhibition
Session: 6CV.4.9
 
Pages:
 
1532 - 1534
ISBN: 3-936338-78-7
Paper DOI: 10.4229/EUPVSEC20212021-6CV.4.9
 
Price:
 
 
0,00 EUR
 
Document(s): paper
 

Abstract/Summary:


A photovoltaic installation is subject to many constraints (such as weather conditions, shocks or dust) that can result in its ageing (such as delamination, discoloration or mould) and thus to performance losses. Only few measured data are available for an accurate long-term prediction of the performance of photovoltaic modules connected in series or building integrated. Some methods permitting to evaluate the impact of each kind of degradation on a photovoltaic field electrical production were proposed and compared. They were applied to a rooftop BIPV system based on its performance ratio and its degradation rate. A performance diagnosis of this installation was also proposed. Compared to the state of art which indicates a degradation rate between 0.5 and 0.8%/year for a rack mounted photovoltaic module, the BIPV system studied had a degradation rate of nearly 4%/year. The majority of the defects detected seems to be related to electrical issue, in particular at the level of the interconnection between the photovoltaic cells and of the bypass diodes in the electrical system. As further steps, a subprogram permitting to determine the evolution over time of the production of a BIPV system will be developed considering different types of installation and photovoltaic technologies.