研究目的
To assess the long-term reliability of photovoltaic (PV) multicrystalline modules under damp heat and thermal cycle testing.
研究成果
The study confirmed the overall degradation of the mini-modules under damp heat and thermal cycle testing, with delamination and corrosion being the main mechanisms of degradation. The investigated consumer-type mini-modules are likely not suited for outdoor conditions, especially in hot and humid African climates.
研究不足
The study is limited to consumer type mini-modules and may not be representative of all PV modules. The testing conditions, while accelerated, may not fully replicate long-term outdoor exposure.
1：Experimental Design and Method Selection:
The study involved extended thermal cycling and damp heat testing on four multicrystalline modules to assess their long-term reliability.
2：Sample Selection and Data Sources:
Consumer type mini modules bought on the market in Senegal were used.
3：List of Experimental Equipment and Materials:
Modules were subjected to damp heat testing at 85 °C/85% RH for 1000 h and 1300 h, and thermal cycle testing between room temperature and 85 °C for 55 and 66 cycles.
4：Experimental Procedures and Operational Workflow:
After testing, modules were investigated using visual inspection, thermography, electroluminescence, and IV-curve measurements.
5：Data Analysis Methods:
The degradation of the modules was analyzed based on the observed defects and performance parameters.
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