Outdoor performance evaluation of photovoltaic modules using contour plots

Minemoto, Takashi; Takahashi, Hiroaki; Nakada, Yasuhito; Takakura, Hideyuki

doi:10.1016/j.cap.2009.11.025

Cited by 28 publications

(6 citation statements)

References 1 publication

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“…A significant positive correlation between PV module temperature and spectral irradiance distribution parameter by means of energy production has been proven by Minemoto et al [22] in which both parameters were characterized using contour plots. The influence of module temperature variations towards the energy efficiency which can be described using contour graph created from statistical analysis method based on average photon energy (APE) and field output factor (FOF) of the silicon PV Module has been analysed by Nagae et al [23].…”

Section: Temperature Factor In Pv Cell Equation Skoplaki Andmentioning

confidence: 82%

Field Measurement of PV Array Temperature for Tracking and Concentrating 1 k WpGenerators Installed in Malaysia

Ya’acob

Hizam

Radzi

et al. 2013

International Journal of Photoenergy

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The effect of temperature elements for PV array with tracking and concentrating features installed in the tropical ground condition is presented. The temperature segment covers ambient temperature and surface and bottom temperature for three types of PV generator systems, namely, Fixed Flat (FF), Tracking Flat (TF), and Concentrating PV (CPV) generators. The location of measuring the cell temperature,Tcfor the PV module is still being debated by researchers with the issue of how much the cell temperature (Tc) is being affected by the surface temperature (Ts), bottom temperature (Tb), and surrounding temperature (Ta) furthermore when it is located in fluctuating weather conditions. In this study,ΔTis calculated based on the difference between surface temperature and bottom-side temperaturewhichever the highest recorded at site for different kinds of PV generator systems but using the same CEEG 95 W monocrystalline PV module. The study embraces the direct correlation of various temperature elements in tropical-based condition withΔTvalues of 2.19°C for FF module, 2.22°C for TF module, and 2.72°C for CPV module. These values which reflect the different unique configurations are further analyzed using multiple linear regression (MLR) and analysis of variance (ANOVA) test forTarraymodels. This study supports the continuous research in adapting PV technology for Malaysia.

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Section: Temperature Factor In Pv Cell Equation Skoplaki Andmentioning

confidence: 82%

Field Measurement of PV Array Temperature for Tracking and Concentrating 1 k WpGenerators Installed in Malaysia

Ya’acob

Hizam

Radzi

et al. 2013

International Journal of Photoenergy

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show abstract

“…Then, as only poor contributions to the total electricity yield can be expected below 300 W⋅m −2 in sunny sites [10,30], they have not been taken into account in this work. Additionally, this lower threshold allows omitting the performance losses of PV modules at low-light levels [31,32].…”

Section: Methodsmentioning

confidence: 99%

“…Temperature. In this context, PR GM is an index that characterises the performance of a PV module at specific values of APE and mod , so that the influence of the irradiance intensity is negligible, given that measurements taken at incident irradiance levels below 300 W⋅m −2 have been left aside [31,32]. An expression related to PR GM shown below will be most helpful in the discussion of results detailed hereafter.…”

Section: Performance Of the Tested Pv Modules As A Function Of The Avmentioning

confidence: 99%

“…International Journal of Photoenergy This is why the experimental campaign was arranged in a way that is relatively simple to quantify the impact of both module temperature and irradiance spectral distribution. Thus, since all data were recorded at incident irradiance below 300 W⋅m −2 , low performance related to low-light levels is disregarded here [31,32]. Also, the effects of dirt have been neglected in what follows; in fact, modules were cleaned manually at least once a month, except under rainy weather.…”

Section: Assessment Of the Impact Of Phenomena Influencing Performancmentioning

confidence: 99%

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Solar Spectral and Module Temperature Influence on the Outdoor Performance of Thin Film PV Modules Deployed on a Sunny Inland Site

Nofuentes

Casa

Torres-Ramírez

et al. 2013

International Journal of Photoenergy

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This work aims at analysing the influence of both module temperature and solar spectrum distribution on the outdoor performance of the following thin film technologies: hydrogenated amorphous silicon (a-Si:H), cadmium telluride (CdTe), copper indium gallium selenide sulfide (CIGS), and hydrogenated amorphous silicon/hydrogenated microcrystalline silicon hetero-junction (a-Si:H/μc-Si:H). A 12-month experimental campaign carried out in a sunny inland site in which a module of each one of these technologies was tested and measured outdoors has provided the necessary empirical data. Results show that module temperature exerts a limited influence on the performance of the tested a-Si:H, CdTe, and a-Si:H/μc-Si:H modules. In contrast, the outdoor behaviour of the CIGS module is the most affected by its temperature. Blue-rich spectra enhance the outdoor behaviour of the a-Si:H and a-Si:H/μc-Si:H modules while it is the other way round for the CIGS module. However, the CdTe specimen shows little sensitivity to the solar spectrum distribution. Anyway, spectral effects are scarcely relevant on an annual basis, ranging from gains for the CIGS module (1.5%) to losses for the a-Si:H module (1.0%). However, the seasonal impact of the spectrum shape is more noticeable in these two materials; indeed, spectral issues may cause performance gains or losses of up to some 4% when winter and summer periods are considered.

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“…A closer insight to that methodology is provided in what follows. Subsequent work assumed this one-to-one relationship between APE and GTI [21][22][23][24][25][26][27][28][29][30], although further investigation at other sites was encouraged to confirm the possible universality of such a relationship.…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of a Spectral Index to Characterize Temporal Variations in the Direct Normal Irradiance Spectrum

Nofuentes

Gueymard²,

Caballero³

et al. 2021

Applied Sciences

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A simple index is desirable to assess the effects on both flat-plate and concentrating photovoltaics of natural changes in the solar spectrum. Some studies have suggested that the relationship between the Average Photon Energy (APE) and the shape of individual global tilted irradiance, global horizontal irradiance, or direct normal irradiance (DNI) spectra is bijective and can therefore be used as a single number to unequivocally replace a complete spectral distribution. This paper reevaluates these studies with a modified methodology to assess whether a one-to-one relationship really exists between APE and spectral DNI. A 12-month dataset collected in Jaén (Spain) using a sun-tracking spectroradiometer provides the necessary spectral DNI data between 350 and 1050 nm. After quality control and filtering, 78,772 valid spectra were analyzed. The methodology is based on a statistical analysis of the spectral distributions binned in 0.02-eV APE intervals, from 1.74 to 1.90 eV. For each interval, both the standard deviation and coefficient of variation (CV) are determined across all 50-nm bands into which the 350–1050-nm waveband is divided. CV stays below 3.5% within the 450–900-nm interval but rises up to 13% outside of it. It is concluded that APE may be approximately assumed to uniquely characterize the DNI spectrum distribution for Jaén (and presumably for locations with similar climates) only over the limited 450–900-nm waveband.

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Outdoor performance evaluation of photovoltaic modules using contour plots

Cited by 28 publications

References 1 publication

Field Measurement of PV Array Temperature for Tracking and Concentrating 1 k WpGenerators Installed in Malaysia

Field Measurement of PV Array Temperature for Tracking and Concentrating 1 k WpGenerators Installed in Malaysia

Solar Spectral and Module Temperature Influence on the Outdoor Performance of Thin Film PV Modules Deployed on a Sunny Inland Site

Experimental Evaluation of a Spectral Index to Characterize Temporal Variations in the Direct Normal Irradiance Spectrum

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