An Efficient and Simple Method for Modelling Solar Cells

  • Ali Kareem Abdulrazzaq Department of Electron Devices, Faculty of Electrical Engineering and Informatics, Budapest University of Technology and Economics, Magyar tudósok körútja 2, H-1117 Budapest, Hungary; Department of Electrical and Electronics Engineering, Thi-Qar University, 64001 Nassiriya, P. O. B. 0535, Iraq
  • György Bognár Department of Electron Devices, Faculty of Electrical Engineering and Informatics, Budapest University of Technology and Economics, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
  • Balázs Plesz Department of Electron Devices, Faculty of Electrical Engineering and Informatics, Budapest University of Technology and Economics, Magyar tudósok körútja 2, H-1117 Budapest, Hungary

Abstract

Accurate and reliable PV device modelling is a fundamental tool to optimize system performance. The regular operation of the PV system in an outdoor condition implies the need for a model that relate the environmental effects. This paper presents a new, simple, and efficient method for constructing the I-V characteristics for a PV cell incorporating the environmental conditions. The proposed model is based on the idea of dividing the voltage axis of the solar cell I-V characteristics using a fixed time interval. For each voltage interval point, a two-dimensional current matrix is calculated, corresponding different irradiance conditions and temperatures. Polynomial surface fitting is used to build sub-models for each voltage interval. The current two-dimensional matrix, for each point, is calculated by two different methods. The first method is based on linear interpolation of the measured I-V curves. The second method uses pre-extracted five parameters for the well known single diode model at a wide range of environmental conditions. The developed modelling technique provides accurate results compared with the measured data for a mono-crystalline solar cell.

Keywords: solar cell, I-V characteristics, single diode model
Published online
2019-10-10
How to Cite
Abdulrazzaq, A. K., Bognár, G. and Plesz, B. (2020) “An Efficient and Simple Method for Modelling Solar Cells”, Periodica Polytechnica Electrical Engineering and Computer Science, 64(1), pp. 40-46. https://doi.org/10.3311/PPee.14385.
Section
Articles