DocumentCode :
683409
Title :
How double-glass laminated amorphous silicon solar modules break in the field: A case study
Author :
Zhang, Ye ; Dun, T. ; Du, Jinyang ; Liu, Xindong ; Li, Huaqing ; Dong, Q. ; Liu, Tiegen ; Huang, Yi-Pai ; Jia, Hongjie ; Mai, Y.
Author_Institution :
Baoding Tianwei Solarfilms Co., Ltd., Baoding, China
fYear :
2013
fDate :
16-21 June 2013
Firstpage :
3279
Lastpage :
3283
Abstract :
About 160 double-glass laminated amorphous silicon solar modules, which were found broken in a BIPV and a ground-mounted project sites, were shipped back to the manufacturer for breakage mechanism investigation. Glass surface inspection and fracture surface analysis were carried out to find out the breakage origin and the tensile stress concentrated on the origin. These modules can be classified into three groups according to the root causes of origin formation. More care shall be taken during installation and maintenance since a large part of modules from both sites were knocked or chucked, and then broke afterwards. Mounting systems have to be improved for double-glass laminated modules as the clamping structure induced more than 50% of breakage in the modules from the ground-mounted project. Scratches on the front glass surface and local glass bending at the module short edges generated origins and tensile stress for the breakage accounting for 55.3% of modules from the BIPV project, and thus shall be minimized. It is suggested that sufficient training and proper machines or tools are very critical for the complicated façade installation to avoid the scratch formation.
Keywords :
bending; fracture; laminates; maintenance engineering; silicon; solar cells; BIPV project; breakage mechanism; clamping structure; double-glass laminated amorphous silicon solar modules; fracture surface analysis; front glass surface; glass bending; glass surface inspection; ground-mounted project sites; maintenance; mounting systems; tensile stress; Glass; Inspection; Maintenance engineering; Surface cracks; Surface morphology; Tensile stress; a-Si; breakage; double glass laminate; solar module;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Photovoltaic Specialists Conference (PVSC), 2013 IEEE 39th
Conference_Location :
Tampa, FL
Type :
conf
DOI :
10.1109/PVSC.2013.6745151
Filename :
6745151
Link To Document :
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