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3D Thermal Model with High Spatial and Temporal Resolution

Authors :
Dubey, V.
Govaerts, J.
Catthoor, F.
Oprins, H.
Chatterjee, U.
Lefevre, B.
Publication Year :
2012
Publisher :
WIP, 2012.

Abstract

27th European Photovoltaic Solar Energy Conference and Exhibition; 1339-1342<br />The performance of photovoltaic (PV) modules in the field is significantly affected by the ambient conditions it is subjected to during its operational life. The ambient conditions typically considered the most important in this respect are temperature, wind speed and moisture. In terms of temperature, the impact can be manifold: • The overall module temperature impacts directly the module performance: increased temperatures at the cell level lead to a drop in VOC which negatively impact the overall performance; • Local variations in illumination and/or temperature (temporally as well as spatially) can cause mismatch between the cells connected in series; • Thermal cycling mechanically stresses the module and may cause cracking and delamination of the different layers in the module (cell, interconnect metallization, encapsulant, glass, back sheet) over time. In short, the operational temperature has an important impact on the potential energy yield of PV modules, either through suboptimal performance of the different cells in the module, or through a reduction of the operational lifetime (reliability issues related to thermal cycling). Here, the aim is to understand by 3D FEM modeling and experimental calibration the thermal behavior in detailed spatial and fine temporal regime of modules to determine potential cell- and module-level improvements. In particular we want to build a thermal model for the MWT c-Si wafer-based modules.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi...........3fdf4c0abeb153016b3fce3a1b8d22f1
Full Text :
https://doi.org/10.4229/27theupvsec2012-2bv.5.4