Photovoltaic module performance and durability following long-term field exposure

King, Daniel J.; Quintana, Michael A.; Kratochvil, J.A.; Ellibee, D. E.; Hansen, B.R.

doi:10.1063/1.58001

Cited by 38 publications

(44 citation statements)

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“…It can degrade the performance by delaminating the layer between encapsulant and the front surface [4].…”

Section: A Heatmentioning

confidence: 99%

“…One of the exact methods for determining the series resistance due to heat and humidity is the measurement of voltage and current of solar cell in darkness [4]. First, Cell is placed in a completely dark place in a way that there is no incident light on the cell surface so there is no induced voltage.…”

Section: Measuring I-v In Darknessmentioning

confidence: 99%

“…For performing this test, an infrared camera is used for finding the series resistance location when the current is twice the rated current in darkness test. The picture of the sections with series resistance are shown as hot red spots in the camera display [4]- [6]. A Hot Find LXS infrared camera was used for the test.…”

Section: E Infrared Testmentioning

confidence: 99%

“…Ultrasonic test(Sonography with high frequency) is a non-destructive test for determining the location of bubble formation or air gap between layers of the solar cells [4]. An ultrasonic device with a frequency over 12 MHz has been used for the test, as shown in Figure 7.…”

Section: F Ultrasonic Testmentioning

confidence: 99%

“…Two years later, degradation tests were simultaneously done on 60 cells in JRC ESTI laboratory in the United States [3]. In 2000, resultant data from a multicrystalline cell at SANDIA which was constantly exposed to sunlight with open circuit configuration for eight years, indicated 0.5 percent performance degradation per year [4]. Investigations at National Renewable Energy Laboratory(NREL) in 2000 showed that the performance of monocrystalline and multicrystalline cells degrades 0.7 percent per year which is mainly because of I SC losses due to UV absorption at the top surface or close to it.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Investigation of solar cells lifetime in Iran

Sefid

Mirbagheri

Mousavi

et al. 2012

2012 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES)

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Solar cells are the power production sources which work on direct radiation of the sun and must be exposed to the sun all the time. The well-known solar cell manufacturers always try to use the best material for production so that in addition to maintaining the great market of this production, protect it against harmful environmental conditions. High temperature, humidity, and air polluted with toxic and corrosive gases are the three significant factors which play an important role in degrading the performance of solar cells and cause considerable reduction in lifetime. Iran is located in a region that has the three mentioned factors. The temperature of some provinces in summer exceeds 50 o C and the humidity approaches 100 percent. Toxic and corrosive gases leaked from oil wells in southern provinces of the country, while polluting the air, have undesired effects on the metallic equipment. This paper investigates the effect of temperature, humidity and toxic gases on the performance of solar cells by performing different experiments such as measuring electric parameters, ultrasonic, darkness and infrared tests, and shows the failure procedure for solar cells exposed to ambient air for 15 months in one of the provinces.

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“…It can degrade the performance by delaminating the layer between encapsulant and the front surface [4].…”

Section: A Heatmentioning

confidence: 99%

Section: Measuring I-v In Darknessmentioning

confidence: 99%

Section: E Infrared Testmentioning

confidence: 99%

Section: F Ultrasonic Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Investigation of solar cells lifetime in Iran

Sefid

Mirbagheri

Mousavi

et al. 2012

2012 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES)

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Long‐term performance degradation of various kinds of photovoltaic modules under moderate climatic conditions

Ishii

Takashima

Otani

2011

Progress in Photovoltaics

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Various kinds of photovoltaic (PV) modules have been developed and practically operated as PV systems up to present. Investigation of the long‐term reliability of PV modules is indispensable for the use of PV systems as reliable energy sources. In this study, we show the results of outdoor exposure test in which the performance of 14 PV modules composed of five different kinds made by six different PV manufacturers have been measured since July 2004. The average performance is calculated in each year from 2005 to 2008, and the performance degradation is quantitatively evaluated. The results are that the magnitude of the performance degradation can be clearly classified by the kinds of the PV modules. The performance difference of the single‐crystalline silicon (sc‐Si) modules between 2005 and 2008 is from 1.9% to 2.8%. Polycrystalline silicon (pc‐Si) modules show performance degradation from 0.7% to 1.4%. The performance of an amorphous silicon/crystalline silicon (a‐Si:H/c‐Si) decreased by 0.7%. Although a pair of a‐Si modules had been already exposed to sunlight for about 6 months, the pair of modules show 4.4% of performance degradation. More than half of the performance degradation happened during the initial period from 2005 to 2006. This indicates that it takes about 2 years until the performance of a‐Si modules is stable. The performance is quite stable after 2006. Interestingly, the performance of the cupper indium gallium diselenide modules in 2008 is about 0.8% higher than that in 2005. Copyright © 2010 John Wiley & Sons, Ltd.

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Multi‐pronged analysis of degradation rates of photovoltaic modules and arrays deployed in Florida

Davis

Kurtz

Jordan

et al. 2012

Progress in Photovoltaics

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The long‐term performance and reliability of photovoltaic (PV) modules and systems are critical metrics for the economic viability of PV as a power source. In this study, the power degradation rates of two identical PV systems deployed in Florida are quantified using the Performance Ratio analytical technique and the translation of power output to an alternative reporting condition of 1000 W m−2 irradiance and cell temperature of 50 °C. We introduce a multi‐pronged strategy for quantifying the degradation rates of PV modules and arrays using archived data. This multi‐pronged approach utilizes nearby weather stations to validate and, if needed, correct suspect environmental data that can be a problem when sensor calibrations may have drifted. Recent field measurements, including I‐V curve measurements of the arrays, visual inspection, and infrared imaging, are then used to further investigate the performance of these systems. Finally, the degradation rates and calculated uncertainties are reported for both systems using the methods described previously. Copyright © 2012 John Wiley & Sons, Ltd.

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Photovoltaic module performance and durability following long-term field exposure

Cited by 38 publications

References 0 publications

Investigation of solar cells lifetime in Iran

Investigation of solar cells lifetime in Iran

Long‐term performance degradation of various kinds of photovoltaic modules under moderate climatic conditions

Multi‐pronged analysis of degradation rates of photovoltaic modules and arrays deployed in Florida

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