International Journal of

ADVANCED AND APPLIED SCIENCES

EISSN: 2313-3724, Print ISSN: 2313-626X

Frequency: 12

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 Volume 12, Issue 12 (December 2025), Pages: 62-74

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 Original Research Paper

Design of an MPPT charge controller using a DC–DC buck-boost converter under system disturbances

 Author(s): 

 Abdulaziz J. Alateeq *

 Affiliation(s):

 Department of Electrical Engineering, College of Engineering, University of Ha’il, Ha’il, Saudi Arabia

 Full text

    Full Text - PDF

 * Corresponding Author. 

   Corresponding author's ORCID profile:  https://orcid.org/0009-0008-3639-1687

 Digital Object Identifier (DOI)

  https://doi.org/10.21833/ijaas.2025.12.007

 Abstract

This paper presents the analysis and design of a maximum power point tracker (MPPT) for a 6 KW photovoltaic (PV) system. The MPPT is implemented through a DC–DC buck-boost converter, modeled and simulated in MATLAB/Simulink. The design begins with determining the operating point of the system by establishing the relationship between the converter’s input impedance, output impedance, and duty ratio, which defines the mechanism of maximum power tracking under system disturbances such as variations in solar irradiance. To achieve optimal performance, the perturb and observe (P&O) algorithm is applied to track the maximum power point, generating a DC signal that is processed by a proportional–integral (PI) controller. The PI controller is designed using a mathematical model developed with the state-space approach, ensuring that the operating point of the system is maintained at the maximum power level.

 © 2025 The Authors. Published by IASE.

 This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/).

 Keywords

 Maximum power point tracking, Photovoltaic system, Buck-boost converter, Perturb and observe, PI controller

 Article history

 Received 3 May 2025, Received in revised form 28 September 2025, Accepted 14 November 2025

 Acknowledgment

No Acknowledgment. 

 Compliance with ethical standards

 Conflict of interest: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

 Citation:

 Alateeq AJ (2025). Design of an MPPT charge controller using a DC–DC buck-boost converter under system disturbances. International Journal of Advanced and Applied Sciences, 12(12): 62-74

  Permanent Link to this page

 Figures

  Fig. 1  Fig. 2  Fig. 3  Fig. 4  Fig. 5  Fig. 6  Fig. 7  Fig. 8  Fig. 9  Fig. 10  Fig. 11  Fig. 12  Fig. 13 

 Tables

  Table 1  Table 2

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