Illuminated solar cell physical parameters extraction using mathematica

• Published in: 2009 IEEE/ACS International Conference on Computer Systems and Applications pp. 63 - 64
• Main Authors: Yadir, S., Aazou, S., Maouhoub, N., Rais, K., Benhmida, M., Assaid, E.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-05-2009
• Subjects: Circuits; Current-voltage characteristics; Equations; Numerical simulation; Parameter extraction; Photodiodes; Photovoltaic cells; Photovoltaic systems; Solar power generation; Voltage
• ISBN: 9781424438075; 1424438071
• ISSN: 2161-5322; 2161-5330
• DOI: 10.1109/AICCSA.2009.5069303

In this work, we present three new Mathematica [1] codes written to extract physical parameters of illuminated solar cell from its current-voltage characteristic. The solar cell is modelled by a circuit containing a p-n junction photocurrent I ph , a reverse saturation current I s , an ideality factor n, a shunt resistance R SH and a series resistance R S . The three codes are based on the following methods: the five points method [2], the Ortiz-conde method [3] and a new method developed in our laboratory, where we determine experimentally the value of series resistance R S , define a new variable x = V - R S I and fit numerically the expression of the current I as a function of x to the simulated data.