Early degradation of silicon PV modules and guaranty conditions

Muñoz, Margarita; Alonso-García, Montserrat; Vela, N.; Chenlo, F.

doi:10.1016/j.solener.2011.06.011

Cited by 346 publications

(179 citation statements)

References 26 publications

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“…measured. Considering an early degradation in terms of maximum power P M * between 0% and 4% [25], we can conclude that the mean yearly degradation goes from 0.4% to 1.1%, which is consequent with other reported experiences [26,27]. Inspection of hotspots has been carried out with a thermographic camera (model Infracam FUR E60).…”

Section: Discussionsupporting

confidence: 73%

In-field assessment of batteries and PV modules in a large photovoltaic rural electrification programme

Carrasco

Narvarte

Martínez‐Moreno

et al. 2014

Energy

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Assuring the sustainability of quality in photovoltaic rural electrification programmes involves enhancing the reliability of the components of solar home systems as well as the characterization of the overall programme cost structure. Batteries and photovoltaic modules have a great impact on both the reliability and the cost assessment, the battery being the weakest component of the solar home system and consequently the most expensive element of the programme. The photovoltaic module, despite being the most reliable component, has a significant impact cost-wise on the initial investment, even at current market prices. This paper focuses on the in-field testing of both batteries and photovoltaic modules working under real operating conditions within a sample of 41 solar home systems belonging to a large photovoltaic rural electrification programme with more than 13,000 installed photovoltaic systems. Different reliability parameters such as lifetime have been evaluated, taking into account different factors, for example energy consumption rates, or the manufacturing quality of batteries. A degradation model has been proposed relating both loss of capacity and time of operation. The user -solar home system binomial is also analysed in order to understand the meaning of battery lifetime in rural electrification.

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Section: Discussionsupporting

confidence: 73%

In-field assessment of batteries and PV modules in a large photovoltaic rural electrification programme

Carrasco

Narvarte

Martínez‐Moreno

et al. 2014

Energy

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“…As mentioned previously, the performance degradation of PV modules is temporary as a result of dust deposition on the module's glass cover (Mani and Pillai, 2010) and permanent caused by non-dust related factors such as yellowing, delamination, bubbles, cracks in the cells, defects in the anti-reflective coating and burnt cells (Munoz et al, 2011). Therefore, in this research, the losses are classified into 2 groups that represent the two kinds of performance degradation.…”

Section: Determining the Contribution Of Dustmentioning

confidence: 97%

“…Over time, the electrical energy output will decrease, commonly due to causes such as humidity, thermal cycling, ultra-violet radiation, and moisture ingress (Quintana et al, 2002) that lead to some permanent degradation, namely corrosion, discoloration, delamination, and breakage and cracking cells (Munoz et al, 2011). Besides these internal factors, one environmental factor that significantly reduces the energy produced by a PV module temporarily is dust (Mani and Pillai, 2010).…”

Section: Introductionmentioning

confidence: 99%

The contribution of dust to performance degradation of PV modules in a temperate climate zone

et al. 2015

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This research investigates the contribution of dust to the long-term performance degradation of various photovoltaic (PV) modules that have been operating for almost eighteen years without any cleaning procedures at the Renewable Energy Outdoor Testing Area (ROTA), Murdoch University, Perth, Australia. A solar module analyser was used to assess the PVs'electrical performance, while a combination of spectrophotometer, scanning electron microscope, electron dispersive spectroscope and X-ray diffraction were used to exam the properties of the dust on the panels. The study found that the degradation of the PV modules' power output, ranged from 19% to 33%. The degradation is mostly due to non-dust related factors such as corrosion, delamination, and discoloration, which account about 71% to 84%, although the contribution of dust is still significant at 16% to 29%. Anova analysis shows that the dust has a fairly uniform impact on the performance degradation of all PV technologies at ROTA. This is in line with the results of spectral transmittance curves for different dust density samples that essentially flat over the wavelength range of the PV modules. An investigation of the properties of dust revealed that dust particles deposited on PV modules' surface at ROTA were dominated by fine particles built of large amounts of quartz (SiO 2 ), followed by calcium oxide (CaO) and some minors of feldspars minerals (KAlSi 3 O 8 ), which are the main factors in transmittance losses that affect PV module performance.

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“…[32], [34], [35] Back sheet surface of solar module Bubbles are formed when heat is released from back sheet of solar module at high temperature while Ruptures are observed during heating or during transportation. Deposition of chalking power because of sing poor quality material at back sheet and thermal degradation.…”

Section: Solar Cells and Bus Barsmentioning

confidence: 99%

Analyzing Defects of Solar Panels under Natural Atmospheric Conditions with Thermal Image Processing

Chaudhary¹,

Chaturvedi²

2018

IJIGSP

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Abstract-Sun is an ultimate source of energy, which is clean, inexhaustible and safe for environment. The energy obtained from sun is known as solar energy. When solar radiations fall on earth surface solar cells convert these solar radiations into electrical energy. Solar cells are one of the important components of solar panels. Many solar cells combine in series or in parallel to form solar module and solar panels. A solar photovoltaic array is a combination of solar panels and is installed in open atmospheric condition. The natural conditions such as dust and dirt, shade of tree affect operation of solar panels. These natural conditions cannot be avoided but can be analyzed using visual inspection and thermal camera. The visual inspection approach is useful only when the defects are visible by naked human eye but when defects cannot be visualized by naked human eye thermo-graphical approach is used. This paper discusses the identification of various defects in solar panels by applying image processing technique applied for thermal images under natural atmospheric conditions for visual inspection, shading effect of tree, dust and dirt deposition effects on solar panels using thermal imaging camera.

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Early degradation of silicon PV modules and guaranty conditions

Cited by 346 publications

References 26 publications

In-field assessment of batteries and PV modules in a large photovoltaic rural electrification programme

In-field assessment of batteries and PV modules in a large photovoltaic rural electrification programme

The contribution of dust to performance degradation of PV modules in a temperate climate zone

Analyzing Defects of Solar Panels under Natural Atmospheric Conditions with Thermal Image Processing

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