Monitoring of PV systems installed in an extremely hostile climate in southern Algeria: Performance evaluation extended to degradation assessment of various PV panel of single-crystalline technologies

Yaichi, Mohammed; Tayebi, Azzedinne; Boutadara, Abdelkader; Bekraoui, Amina; Mammeri, Abdelkrim

doi:10.1016/j.enconman.2023.116777

Cited by 11 publications

(16 citation statements)

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“…Infrared imaging also identifies hotspots and temperature anomalies indicating cell/interconnection defects not visible to the naked eye [37]. Additionally, EL imaging evaluates PID by capturing voltage-biased module images to detect degradation [19,27]. Studies have measured 16-10.1W power decreases through EL imaging [34].…”

Section: Electroluminescence (El) Imaging Methodsmentioning

confidence: 99%

“…Studies have measured 16-10.1W power decreases through EL imaging [34]. It can also monitor restoration post-polarity reversal [27]. EL imaging leverages radiative recombination to detect LID as well [25].…”

Section: Electroluminescence (El) Imaging Methodsmentioning

confidence: 99%

“…A 2022 study by Ghadeer Badran demonstrated 27-39% PID power loss after 4-8 months of field use in Barcelona [19]. Additional research found 25% PID degradation [27] and over 35% power drop after months of exposure at +160V in Germany [34]. Other studies showed 1.6-10W loss after 26 months in a semi-arid climate [34].…”

Section: Potential-induced Degradationmentioning

confidence: 97%

“…PID occurs in c-Si modules when voltage potential and resulting leakage currents degrade cells, requiring electroluminescence imaging and cutting Voc and FF [8,14,22,26,28,32,36]. LID in TF cells involves efficiency decline after sunlight exposure from defects in p-type silicon, necessitating Voc monitoring [14,21,26,27].…”

Section: Degradation Processes and Mechanismsmentioning

confidence: 99%

“…However, higher system voltages may exacerbate PID over time [18]. Overall, multiple studies reveal PID substantially degrades PV performance through leakage currents and cell degradation [12,18,19,24,27,34,39]. Developing solutions is critical for the photovoltaic industry.…”

Section: Potential-induced Degradationmentioning

confidence: 99%

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Understanding Photovoltaic Module Degradation: An Overview of Critical Factors, Models, and Reliability Enhancement Methods

Diallo,

Melhaoui,

Rafi

et al. 2023

E3S Web of Conf.

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Photovoltaic (PV) modules, though reputed for reliability and long lifespans of 25-30 years, commonly experience gradual performance degradation influenced by varying environmental factors. This literature review explores the degradation of PV modules through in-depth analysis of failure modes, characterization techniques, analytical models, and mitigation strategies. A range of failure modes seen in PV modules are discussed, including interconnect breakage, cell cracks, metallization corrosion, delamination, ethylene-vinyl acetate (EVA) discoloration, Potential-Induced Degradation (PID), Light-Induced Degradation (LID), and other. Environmental stresses like temperature, humidity, ultraviolet (UV) radiation, and dust accumulation play significant roles in accelerating almost all degradation modes. Dust is a crucial factor in Middle East/North Africa (MENA) regions. Studying degradation modes under real-world conditions remains challenging, requiring extensive field testing to examine defect frequency, evolution rate, and impacts on energy production. PID is a major degradation mode requiring modeling and correction techniques to improve PV efficiency and lifespan. However, PID models are often limited to specific conditions, posing applicability challenges. Characterization methods like visual inspection, current-voltage (I-V),various imaging methods, and resonance ultrasonic vibrations (RUV) enable effective evaluation of degradation effects on module properties. Analytical models facilitate study of particular degradation modes and prediction of lifetimes under diverse conditions. Key factors influencing PV degradation include weather variations, materials quality, design parameters, PID, and hot spots. Protective coatings, encapsulation improvements, and module cleaning help mitigate degradation and prolong lifespan. A comprehensive understanding of mechanisms through integrated experimentation and modeling is critical for performance improvements. By reviewing major degradation phenomena, characterization techniques, analytical models, and mitigation strategies, this study promotes PV durability and sustainability. Significant knowledge gaps persist regarding module behavior under varied climate conditions and synergistic effects between different degradation mechanisms. Extensive field testing across diverse environments paired with advanced multiphysics modeling can provide valuable insights to guide technological enhancements for robust, long-lasting PV systems worldwide.

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