研究目的
To identify and reduce the occurrence frequency of defects in Interdigitated Back Contact (IBC) PV modules with customizable shape after their manufacturing.
研究成果
The study successfully identifies the cause of defects in custom IBC PV modules as the deposition of powders during the welding of the cells into strings. A preventive action involving cleaning the rear of the strings before lamination reduces the occurrence frequency of the defect by about 66%.
研究不足
The study is limited to defects occurring during the manufacturing process of custom IBC PV modules and does not address defects due to aging or extreme environmental conditions.
1：Experimental Design and Method Selection:
The study employs Electroluminescence (EL) analysis and current-voltage (I-V) curves determination to detect defects in PV modules.
2：Sample Selection and Data Sources:
Custom IBC PV modules are tested after manufacturing.
3：List of Experimental Equipment and Materials:
Includes an IR camera for EL analysis, a variable power source, and a personal computer for data acquisition and analysis.
4：Experimental Procedures and Operational Workflow:
The modules undergo EL analysis and I-V curve tracing to identify defects.
5：Data Analysis Methods:
The electrical performance of the modules is analyzed, including short-circuit current, open-circuit voltage, maximum power, and parameters of the electrical equivalent circuit.
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