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- W1891170045 abstract "ABSTRACT As the use of photovoltaic (PV) modules inlarge power plants continues to increase globally, more studies ondegradation, reliability, failure modes, and mechanisms of fieldaged modules are needed to predict module life expectancy based onaccelerated lifetime testing of PV modules. In this work, a 26+year old PV power plant in Phoenix, Arizona has been evaluated forperformance, reliability, and durability. The PV power plant,called Solar One, is owned and operated by John F. Long'shomeowners association. It is a 200 kWdc, standard test conditions(STC) rated power plant comprised of 4000 PV modules or framelesslaminates, in 100 panel groups (rated at 175 kWac). The power plantis made of two center-tapped bipolar arrays, the north array andthe south array. Due to a limited time frame to execute this largeproject, this work was performed by two masters students (JonathanBelmont and Kolapo Olakonu) and the test results are presented intwo masters theses. This thesis presents the results obtained onthe south array and the other thesis presents the results obtainedon the north array. Each of these two arrays is made of four subarrays, the east sub arrays (positive and negative polarities) andthe west sub arrays (positive and negative polarities), making upeight sub arrays. The evaluation and analyses of the power plantincluded in this thesis consists of: visual inspection, electricalperformance measurements, and infrared thermography. A possiblepresence of potential induced degradation (PID) due to potentialdifference between ground and strings was also investigated. Someinstallation practices were also studied and found to contribute tothe power loss observed in this investigation. The power outputmeasured in 2011 for all eight sub arrays at STC is approximately76 kWdc and represents a power loss of 62% (from 200 kW to 76 kW)over 26+ years. The 2011 measured power output for the four southsub arrays at STC is 39 kWdc and represents a power loss of 61%(from 100 kW to 39 kW) over 26+ years. Encapsulation browning andnon-cell interconnect ribbon breakages were determined to be theprimary causes for the power loss." @default.
- W1891170045 created "2016-06-24" @default.
- W1891170045 creator A5030059168 @default.
- W1891170045 date "2012-01-01" @default.
- W1891170045 modified "2023-09-28" @default.
- W1891170045 title "26+ Year Old Photovoltaic Power Plant: Degradation and Reliability Evaluation of Crystalline Silicon Modules - South Array" @default.
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