Investigation on Temperature Coefficients of Three Types Photovoltaic Module Technologies under Thailand Operating Condition

Kamkird, P.; Ketjoy, Nipon; Rakwichian, Wattanapong; Sukchai, Sukruedee

doi:10.1016/j.proeng.2012.01.1282

Cited by 43 publications

(20 citation statements)

References 8 publications

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“…Note that, the temperature coefficient found in outdoor conditions even though well correlate with the module behaviour are different from those given by the manufacturer especially for VIC003 and SHA017. Such observation has been reported in others studies [33,39]. The discrepancies can be introduced by wind, intermittent sunshine, module frames, junction boxes, mounting brackets [38] or effects of thermal annealing and light soaking [40].…”

Section: Temperature Effectsupporting

confidence: 82%

Energy performance of different silicon photovoltaic technologies under hot and harsh climate

Tossa

Soro

Thiaw³

et al. 2016

Energy

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Section: Temperature Effectsupporting

confidence: 82%

Energy performance of different silicon photovoltaic technologies under hot and harsh climate

Tossa

Soro

Thiaw³

et al. 2016

Energy

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“…(11) so the other PV device performance parameters namely are also affected by the spectrum variations [44,62]. Numerous performance analysis studies have been carried out to assess the magnitudes of these effects on different technology based PV devices [65][66][67][68][69][70][71][72][73][74][75][76][77][78]. Hence, for a 1000W/m 2 irradiation level, the operating temperature of the PV devices is transposed to the value at STC which process is known as temperature correction.…”

Section: Spectral Responsementioning

confidence: 99%

Spectral irradiance effects on the outdoor performance of photovoltaic modules

Eke

Betts

Gottschalg

2017

Renewable and Sustainable Energy Reviews

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The outdoor performance of photovoltaic modules is influenced by spectrum. Even if the irradiance level and the operating temperature is the same, performance difference of photovoltaic modules between the seasons can be increase up to 15% depending on the photovoltaic module type. In this paper, seasonal spectral irradiance effects on the outdoor photovoltaic module performance and previous studies has been summarised thoroughly. The spectrum indicators which are used for spectra characteristics, Useful Fraction and Average Photon Energy are described in detail. This study also indicates spectrum effects on PV performance and outlines the present studies investigating this effect.Keywords: spectral effect, photovoltaic module, outdoor performance, useful fraction, average photon energy 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 spectrum, and a module temperature of 25⁰C. However, STC are not representatives of actual outdoor conditions in most regions of the world. Therefore, it is suspected that the score of a PV module by power rating method under STC is different from the actual performance in outdoor conditions [1][2][3][4][5].The performance of photovoltaic (PV) modules installed outdoor is greatly influenced by various ambient environmental factors such as incident irradiance, the module temperature and the spectral irradiance distribution.In this study, solar spectrum, the spectral effects on PV performance is discussed. There are a lot papers presented in different organizations outlines the effect on the installed PV systems. More than 200 studies are reviewed and some of them are published in journals or conference proceedings, the rest are unpublished or contains only local data. Solar Spectrum and Additional Spectral Irradiance DescriptorsEmission of radiation from the sun contributes to the solar spectrum as observed from Earth. Just above the Earth's atmosphere, the radiation intensity, or Solar Constant, is about 1.353 kW/m 2 [6,7] and the spectral distribution is referred to as an air mass zero (AM0) radiation spectrum. The Air Mass is a measure of how absorption in the atmosphere affects the spectral content and intensity of the solar radiation reaching the Earth's surface. The Air Mass number is given by (1) where is the angle of incidence ( when the sun is directly overhead). Moreover, the outdoor solar spectrum distribution changes during a day because of the aerosol and water vapour. Hence, it is rare to fit the standard solar spectrum (Fig.1 Therefore, a new parameter, angle of incidence is defined to explain the position of solar rays on the plane [10]. is a measure of deviation of something from "straight on". A surface directly facing the sun has an of zero, and a surface parallel to the sun (such as a sunrise striking a horizontal plane) has an of 90°. Sunlight with an inc...

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“…This value has been adopted for the calculation of the temperature-corrected fill factor of the later date for each module, which is quoted in brackets in Figure 12. For these corrections the temperature coefficient of the open circuit voltage was also needed, and the field value of -0.5%/K obtained in [42] was used.…”

Section: Outdoor Tests Of Large Modulesmentioning

confidence: 99%

Cell interconnection without glueing or soldering for crystalline Si photovoltaic modules

Summhammer

Halavani

2016

EPJ Photovolt.

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In order to maximize the power output of polycrystalline silicon PV-modules, in previous work we have already tested rectangular cells of 39 × 156 mm which are overlapped along the long sides. The low current density at the cell overlap allows interconnections which need neither soldering nor glueing, but use metallic strips inserted between the cells in the overlap region. The contact is established by the pressure applied to the module during lamination and is retained by the slightly bent cells in the solidified encapsulant. Here we report on the long term stability of different contact materials and contact cross sections applied in eight modules of the 240 W class monitored for up to 24 months of outdoor operation and in a variety of small 5-cell modules exposed to rapid ageing tests with up to 1000 thermal cycles. Cells with three different electrode designs were tested and the contact materials were Cu, Ag, SnPbAg and Sn. Focussing especially on series resistance, fill factor and peak power, it is found that Ag-coated contact strips perform equally well and have practically the same stability as soldered cell interconnections. Due to 70-90% savings in copper and simpler manufacturing the cost of PV-modules may thus be reduced further.

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Investigation on Temperature Coefficients of Three Types Photovoltaic Module Technologies under Thailand Operating Condition

Cited by 43 publications

References 8 publications

Energy performance of different silicon photovoltaic technologies under hot and harsh climate

Energy performance of different silicon photovoltaic technologies under hot and harsh climate

Spectral irradiance effects on the outdoor performance of photovoltaic modules

Cell interconnection without glueing or soldering for crystalline Si photovoltaic modules

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