IEEE PVSC 49
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SPLTRAK Abstract Submission
Common failure modes observed in PV system installed in desert climate
AMIR A. ABDALLALH1, Kamran Ali2, Maulid M. Kivambe 1
1Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU) , Doha, Qatar
/2Faculty of Integrated Technologies, Universiti Brunei Darussalam, Brunei Darussalam, Brunei
/3Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU) , Doha, Qatar

This paper reports on the common PV module failure modes observed in PV systems operated for the last 8 years in desert climate. Visual inspection and high-resolution Infrared (IR) camera were used to identify PV module failure in the field, while Current-Voltage (IV) measurement and Electroluminescence (EL) imaging were performed at indoor to investigate further the main cause of PV module failure. Back sheet cracking, encapsulant yellowing, and hot spot are the most common failure modes observed in the field. PV module failures were detectable by comparing the IV curve measurement of the reference module and the module returned from the field. Micro-cracks showed on the EL images affect the power generated from the PV module. Degradation of the PV module electrical parameters has been assessed by comparing the reference IV curve with the measured IV curves of PV modules returned from the field after 8 years of operation.