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Research Papers

Wind Effect Modeling and Analysis for Estimation of Photovoltaic Module Temperature

[+] Author and Article Information
Dhiraj Magare

Department of Energy Science and Engineering,
Indian Institute of Technology Bombay,
Mumbai 400076, India
e-mail: dhiraj.magare@iitb.ac.in

Oruganti Sastry

National Institute of Solar Energy,
Ministry of New and Renewable Energy,
New Delhi 122003, India
e-mail: sastry284@gmail.com

Rajesh Gupta

Department of Energy Science and Engineering,
Indian Institute of Technology Bombay,
Mumbai 400076, India
e-mail: rajeshgupta@iitb.ac.in

Birinchi Bora

National Institute of Solar Energy,
Ministry of New and Renewable Energy,
New Delhi 122003, India
e-mail: birinchibora09@gmail.com

Yogesh Singh

National Institute of Solar Energy,
Ministry of New and Renewable Energy,
New Delhi 122003, India
e-mail: yogeshkumarsingh7@gmail.com

Humaid Mohammed

Department of Energy Science and Engineering,
Indian Institute of Technology Bombay,
Mumbai 400076, India
e-mail: humaidmohd@iitb.ac.in

1Corresponding author.

Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received May 14, 2017; final manuscript received November 19, 2017; published online December 22, 2017. Assoc. Editor: Geoffrey T. Klise.

J. Sol. Energy Eng 140(1), 011008 (Dec 22, 2017) (8 pages) Paper No: SOL-17-1184; doi: 10.1115/1.4038590 History: Received May 14, 2017; Revised November 19, 2017

The performance of photovoltaic (PV) modules in outdoor field conditions is adversely affected by the rise in module operating temperature. Wind flow around the module affects its temperature significantly, which ultimately influences the module output power. In this paper, a new approach has been presented, for module temperature estimation of different technology PV modules (amorphous Si, hetero-junction with intrinsic thin-layer (HIT) and multicrystalline Si) installed at the site of National Institute of Solar Energy (NISE), India. The model based on presented approach incorporates the effect of wind speed along with wind direction, while considering in-plane irradiance, ambient temperature, and the module efficiency parameters. For all the technology modules, results have been analyzed qualitatively and quantitatively under different wind situations. Qualitative analysis based on the trend of module temperature variation under different wind speed and wind direction along with irradiance and ambient temperature has been presented in detail from experimental data. Quantitative results obtained from presented model showed good agreement with the experimentally measured data for different technology modules. The model based on presented approach showed marked improvement in results with high consistency, in comparison with other models analyzed for different technology modules installed at the site. The improvement was very significant in case of multicrystalline Si technology modules, which is most commonly used and highly temperature sensitive technology. Presented work can be used for estimating the effect of wind on different technology PV modules and for prediction of module temperature, which affects the performance and reliability of PV modules.

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Figures

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Fig. 1

Wind speed occurrence at the site

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Fig. 2

Schematic of weather station and PV module measurement system

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Fig. 3

The effect of variation in the in-plane irradiance and ambient temperature on module temperature (Tm) (grayscale palette) for different wind situations (a) 0–2 m/s, (b) 2–8 m/s parallel, and (c) 2–8 m/s perpendicular

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Fig. 4

Percentage change in efficiency with respect to maximum observed efficiency under different wind situations for three PV technologies

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Fig. 5

Average RMSE of module temperature (Tm) corresponding to variation in model coefficients in the range of 50–150% with a step of 10%, under three wind situations

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Fig. 6

Histogram of recorded temperature data points with percentage difference in module temperature estimation for three PV technology modules under different wind situations

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