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Ekwe, O. A.
Department of Electrical/Electronic Engineering, Michael Okpara University of Agriculture, Umudike
Ukoima, K. N.
Department of Electrical/Electronic Engineering, Michael Okpara University of Agriculture, Umudike
ABSTRACT
This paper presents an analysis
of parameter variations of a single-diode solar cell model. The parameters
analyzed are the series resistance, shunt resistance, temperature and radiation
change. Model equations are derived and simulated. All simulations were
performed in MatLab using looping iterative method. Results obtained show that an
increase in series resistance causes a decrease in short-circuit current and
output power. A decrease in shunt resistance also causes a decrease in short circuit
current and output power. An increase in temperature above the nominal value of
25oC causes a significant decrease in the open circuit voltage. An
increase in irradiance above a nominal value of 1000 W/m2 causes the
short circuit current to increase from 8.21A at 1000 W/m2 to 10.67A
at 1300W/m2. It can be
seen that parameter variations have a net effect on the current-voltage (I-V) and
power-voltage (P – V) characteristics.
Keywords: Series resistance, Shunt resistance, Photovoltaic, Short circuit current, open circuit voltage
https://doi.org/10.33922/j.ujet_v5i1_11
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View: 311 | Download: 35
Published
Saturday, September 14, 2019
Issue
Vol. 5 No. 1, JUNE 2019
Article Section
GENERAL
The contents of the articles are the sole opinion of the author(s) and not of UJET.
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