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Ukoima, K. N.
Department of Electrical/Electronic Engineering, Michael Okpara University of Agriculture, Umudike.
Ekwe, O. A.
Department of Electrical/Electronic Engineering, Michael Okpara University of Agriculture, Umudike.
ABSTRACT
Existing empirical solar
cell models use one or two diodes. As the number of diodes in a model
increases, the mathematical complexity in deriving model equations also
increases. In this paper, a photovoltaic cell is modeled using three diodes. Non-linear
mathematical equations governing the I-V and P-V characteristics are summarized
and simulated using Matlab looping iterative method. All simulations were
performed in Matlab. Comparison is made between all models (one, two and three-diode)
for design verification. Results obtained show that as the number of diodes
increases in a PV cell model, the open circuit voltage and maximum power
decreases for a given set of PV cell parameters. The short circuit current remained
at a fixed value irrespective of the number of diodes.
Keywords: Photovoltaic, I-V characteristic, P-V characteristic, Three-diode model, Matlab
https://doi.org/10.33922/j.ujet_v5i1_12
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View: 285 | Download: 57
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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