Analysis of Performance Parameters of Amorphous Photovoltaic Modules under Different Environmental Conditions

A.A. Ghoneim, K.M. Kandil, A.Y. Al-Hasan, M. S. Altouq, A.M. Al-asaad, L. M. Alshamari, A. A. Shamsaldein


The effects of temperature and radiation intensity on the performance parameters of amorphous hydrogenated silicon (a-Si:H) photovoltaic module have been investigated. An outdoor experimental setup is installed to carryout a series of I-V curve measurements under different irradiance and temperature conditions for the module. A numerical model which considers the effect of series and shunt resistances is developed to evaluate the different parameters of PV modules. Orthogonal distance regression (ODR) algorithm is adapted for fitting I-V measurements and extracting module parameters from I-V measurements. The values of module parameters, series resistance Rs, shunt resistance Rsh, diode ideality factor n and reverse saturation current Io determined from I-V measurements at different irradiation intensity and temperature range are in good agreement with the corresponding parameters obtained from the developed numerical model. The module parameters extracted from I-V measurements are employed to calculate the module performance parameters, i.e. open circuit voltage Voc, fill factor FF and module efficiency h at different irradiation intensity and temperature range. Present results indicate that the module parameters have a significant effect on module performance. Also, the behavior of Voc is completely different at higher temperatures.

Key words: Amorphous module parameters;  Ideality factor; Series resistance; Shunt resistance


Amorphous module parameters; Ideality factor; Series resistance; Shunt resistance

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[1] Poortmans J., & Arkhipov, V. (2006). Thin Film Solar Cells Fabrication, Characterization and Applications. John Wiley & Sons Ltd, West Sussex PO19 8SQ, England.

[2] Agarwal S.K., Muralidharan, R., Agarwal, A., Tiwary, V.K., & Jain, S.C. (1981). A New Method for the Measurement of Series Resistance of Solar Cells. Journal of Physics D: Applied Physics, 14, 1643-1646.

[3] Chegaar M., Ouennouchi, Z., & Hoffmann, A. (2001). A New Method for Evaluating Illuminated Solar Cell Parameters. Solid-State Electron, 45, 293–296.

[4] Ishibashi K.I, Kimura, Y., & Niwano, M. (2008). An Extensively Valid and Stable Method for Derivation of all Parameters of a Solar Cell from a Single Current–Voltage Characteristics. Journal of Applied Physics, 103, 094507.

[5] Singh S.N., & Husain, M. (2010). Effect of Illumination Intensity on Cell Parameters of a Silicon Solar Cell. Solar Energy Materials and Solar Cells, 94, 1473-1476.

[6] Townsend T.U. (1989). A Method for Estimating the Long-Term Performance of Direct-Coupled Photovoltaic System. M.Sc. Thesis, Mechanical Engineering, University of Wisconsin-Madison.

[7] Ortiz-Conde A., Garcia Sanchez, F.J., & Muci, J. (2006). New Methods to Extract Model Parameters of Solar Cells from the Explicit Analytic Solutions of Their Illuminated I–V Characteristics. Solar Energy Materials and Solar Cells, 90, 352–361.

[8] De Soto W., Klein, S.A., & Beckman, W.A. (2006). Improvement and Validation of a Model for Photovoltaic Array Performance. Solar Energy, 80, 78-88.

[9] Burgers A.R. (2004). Fitting Flash Test Curves with ECN's I-V Curve Fitting Program IVFIT. Proceedings 14th International Photovoltaic Science and Engineering Conference ( PVSEC). Bangkok, Thailand, 26-30 January.

[10] Klein S.A., et al. (1994). TRNSYS Users Manual, Version 14.1. University of Wisconsin Engineering Experimental Station.

[11] Hegedus S.S., & Shafarman, W.S. (2004). Thin-Film Solar Cells: Device Measurements And Analysis. Progress in Photovoltaics: Research and Applications, 12 (2), 155-176.

[12] Merten J., Asensi, J.M., Voz, C., Shah, A.V., Platz, R., & Andreu, J. (1989). Improved Equivalent Circuit and Analytical Model for Amorphous Silicon Solar Cells and Modules. IEEE Transaction on Electronic Devices, 45 (2), 423-429.

[13] Radue C., & van Dyk, E.E. (2010). A Comparison of Degradation in Three Amorphous Silicon PV Module Technologies. Solar Energy Materials and Solar Cells, 94, 617-622.

[14] Meyer E.L., & van Dyk, E.E., (2004). Assessing the Reliability and Degradation of Photovoltaic Module Performance Parameters. IEEE Transactions on Reliability, 53 (1), 83-92.

[15] Del Cueto J.A., & von Roedern, B. (1999). Temperature-Induced Changes in the Performance of Amorphous Silicon Multi-Junction Modules in Controlled Light-Soaking. Progress in Photovoltaics: Research and Applications, 7(2), 101-112.



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