Study Method of the P&O Algorithm using Pulse Width Modulation and Duty Cycle Modulation: Application to the search for the Maximum Power Point of PV Systems

Theodore Louossi; Kitmo; F. N. Gildas Armel; Nanfak Arnaud; Doka Baza Gilbert; Hamda Marcel Soulouknga; Fatima T. Ahmed

doi:10.62760/iteecs.4.4.2025.156

Authors

Theodore Louossi Department of Renewable Energy, National Advanced School of Engineering of Maroua, University of Maroua, Maroua, Cameroon https://orcid.org/0000-0002-6946-9339
Kitmo Department of Renewable Energy, National Advanced School of Engineering of Maroua, University of Maroua, Maroua, Cameroon
F. N. Gildas Armel Laboratory of Energetics and Thermal Applied process (LETA), ENSAI, the University of Ngaoundere P.O. Box 445 ENSAI Ngaoundere, Cameroon
Nanfak Arnaud Department of Energy, Materials, Modelling and Methods, National Higher Polytechnic School of Douala, University of Douala PO Box 2701, Douala, Cameroon https://orcid.org/0000-0002-6432-3365
Doka Baza Gilbert Department of Renewable Energy, National Advanced School of Engineering of Maroua, University of Maroua, Maroua, Cameroon https://orcid.org/0009-0002-4256-9716
Hamda Marcel Soulouknga Department of Physics, University of Sarh, Sarh, Chad
Fatima T. Ahmed Department of Atmospheric Science, College of Science, Mustansiriyah University, Baghdad, Iraq

DOI:

https://doi.org/10.62760/iteecs.4.4.2025.156

Keywords:

PV System, MPPT, Partial shading, Duty cycle modulation, P&O algorithm

Abstract

In this paper, we make a comparative study of the P&O algorithm using pulse width modulation (PWM) and duty cycle modulation (DCM) for the control of DC/DC converters used for the search of the maximum power point of photovoltaic systems. The converter used here is a boost chopper. Details of the two modulation techniques are presented, and the results are obtained using MATLAB/Simulink software. These results show that the power at the output of the PV oscillates around 0.2W for the DCM technique and 0.6W for the PWM. The output power of the boost chopper shows an oscillation of 0.8W for DCM and 2.4W for PWM. The DCM, in terms of speed reaches the PPM 0.012s less than the PWM. We can therefore say that DCM is better than PWM.

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Study Method of the P&O Algorithm using Pulse Width Modulation and Duty Cycle Modulation: Application to the search for the Maximum Power Point of PV Systems

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