Abstract
The failure and degradation modes of about 5900 crystalline-Si glass/polymer modules fielded for six to 16 years in three different photovoltaic (PV) power plants with different mounting systems under the hot-dry desert climate of Arizona are evaluated. Based on the results of this evaluation, failure mode, effect, and criticality analysis, a statistical reliability tool that uses risk priority number is performed for each PV power plant to determine the dominant failure modes in the modules by means of ranking and prioritizing the modes. This study on PV power plants considers all the failure and degradation modes from both safety and performance perspectives and, thus, comes to the conclusion that solder bond fatigue/failure with/without gridline contact fatigue/failure is the most dominant failure/degradation mode for these module types in the hot-dry desert climate of Arizona.
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