Failure Modes Evaluation of PV Module via Materials Degradation Approach

Wang, Yuanxun Ethan; Yang, Hsinjin; Yen, Jerry; Chi, Sunny; Wang, Carl

doi:10.1016/j.egypro.2013.05.066

Cited by 56 publications

(44 citation statements)

References 3 publications

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“…al. [20]. Eighteen commercially available polycrystalline 60-cell solar PV modules made with FPE (fluoropolymer, polyester, and EVA) backsheets were fabricated under identical processing conditions by DelSolar [21].…”

Section: Ul Previous Resultsmentioning

confidence: 99%

“…The FPE PV modules and test laminates were aged in damp heat conditions four times longer than the IEC standard of 1000 hours. Two of the original eight modules were removed from the chamber at each 1000-hour time increment and destructively disassembled, and packaging materials were collected and tested, until a maximum exposure time of 4000 hours [20].…”

Section: A Damp Heat Exposurementioning

confidence: 99%

“…The systemlevel responses were measured every 500 hours for both the damp heat and UV experiments from 0 to 2500 hours, and then every 250 hours from 2500 to 4000 hours for damp heat and 2500 to 4250 hours for UV experiments [20]. P max is the peak power of a photovoltaic module, and is determined by measuring current and voltage while varying resistance under defined illumination.…”

Section: System Responsesmentioning

confidence: 99%

“…These experiments can be separated into two categories: performance (peel strength of the EVA-glass interface in the test laminates (P eel), EVA modulus (M od), EVA glass transition temperature (T g ), water vapor transmission rate of the backsheet (W T V R) and differential scanning calorimetry of EVA (DSC)) and mechanistic (two IR measurements of EVA hydrolysis IREV A and IR2, thermogravimetric analysis of EVA (T GA), EVA acetic acid content (Hac), and 2 IR measurements of backsheet PET hydrolysis IRBS1 and IRBS2). The unit experiments were performed on component materials and subsystems of dissassembled modules every 1000 hours of testing [20]. Fig.…”

Section: E Unit Experimentsmentioning

confidence: 99%

“…Summary of data from PV modules for each of the system and unit data for the DH (top) and the UV (bottom) experiments. The blue squares indicates data that was taken for the time point and the yellow squares indicate data that was not collected [20].…”

Section: E Unit Experimentsmentioning

confidence: 99%

See 4 more Smart Citations

Degradation pathway models for photovoltaics module lifetime performance

Wheeler

Bruckman

et al. 2013

2013 IEEE 39th Photovoltaic Specialists Conference (PVSC)

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Abstract-Previously published accelerated testing data from Underwriter Labs, featuring measurements taken on 18 identical photovoltaic (PV) modules exposed to two stress conditions, were used to develop an analytical methodology. The results provide insight into active degradation mechanisms and pathways present in PV modules under accelerated testing conditions as indicated by statistically significant relationships between variables. Observed experimental results coincide with a domain knowledge based theoretical degradation pathway model informed by literature, and provide a basis for beginning to investigate the degradation modes and pathways truly present in modules and their effects on module performance over lifetime.

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Section: Ul Previous Resultsmentioning

confidence: 99%

Section: A Damp Heat Exposurementioning

confidence: 99%

Section: System Responsesmentioning

confidence: 99%

Section: E Unit Experimentsmentioning

confidence: 99%

Section: E Unit Experimentsmentioning

confidence: 99%

See 3 more Smart Citations

Degradation pathway models for photovoltaics module lifetime performance

Wheeler

Bruckman

et al. 2013

2013 IEEE 39th Photovoltaic Specialists Conference (PVSC)

Self Cite

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Polymeric materials for long‐term durability of photovoltaic systems

Griffini

Turri

2015

J of Applied Polymer Sci

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Photovoltaic (PV) technology has evolved rapidly in the past few decades and now encompasses a large variety of materials and device structures. A key aspect to be taken into account in any PV technology is the operational durability of the systems in outdoor conditions. Clearly, loss of performance during operation represents a significant drawback and limitation in the commercialization of this technology. In this context, the large compositional flexibility of polymeric materials as well as their proven easy processability may be of great help in imparting improved durability to PV systems. In this review, a summary on the state of the art and most recent developments in the field of polymeric materials for improved long-term durability of PV devices is presented, with particular emphasis on the use of polymers as encapsulation materials and protective coatings in the field of both PV and lightconcentration systems.

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Correlation study of damp heat and pressure cooker testing on backsheets

Ottersböck

Pinter

2016

J of Applied Polymer Sci

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For photovoltaic (PV) modules, high‐quality backsheets are essential. To verify these qualities, hot and humid tests of up to 1000 h are standard in the PV industry. Damp heat (DH) tests are useful for evaluating material quality and infant failures, especially for materials that are sensitive to hydrolysis. However, shorter test periods are needed. Hence, the objective of this study was to investigate and correlate the aging behavior of hydrolysis‐sensitive polyester [poly(ethylene terephthalate) (PET)] based backsheets after exposure to DH and pressure cooker conditions. The material properties, such as thermal and mechanical parameters, correlated well between the pressure cooker at 120 °C and the DH test, with the qualification that differences in the failure mechanism were seen after 96 and 2000 h, respectively. Nevertheless, it should be acceptable to use pressure cooker tests (PCTs) for fast material testing. The PCT is proposed to significantly reduce the testing time for infant failures and material quality to around 4 days for PET‐based backsheets. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44230.

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Failure Modes Evaluation of PV Module via Materials Degradation Approach

Cited by 56 publications

References 3 publications

Degradation pathway models for photovoltaics module lifetime performance

Degradation pathway models for photovoltaics module lifetime performance

Polymeric materials for long‐term durability of photovoltaic systems

Correlation study of damp heat and pressure cooker testing on backsheets

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