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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received June 22, 2025
Accepted July 25, 2025
Available online November 25, 2025
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Design and Implementation of a Neural Network‑Based Control Strategy for Temperature‑Regulated Direct Methanol Fuel Cell

Department of Chemical Engineering, Sri Venkateswara College of Engineering 1Department of Chemical and Biomolecular Engineering, Chonnam National University 2Department of Instrumentation Engineering, Madras Institute of Technology, Anna University 3Department of Biomaterials, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences
Korean Journal of Chemical Engineering, November 2025, 42(13), 3321-3332(12)
https://doi.org/10.1007/s11814-025-00531-z

Abstract

Direct Methanol Fuel Cell (DMFC) stands out for its enhanced power, reduced weight, and extended operational life, making

it ideal, portable, off-grid applications. Its performance is highly sensitive to temperature variations, necessitating precise

monitoring and control to achieve optimal efficiency. In this study, the impact of temperature on DMFC performance was

examined through real-time experiments from 303 to 343 K. The behavior of the system under varying conditions, viz.,

temperature and operational stability at current levels from 1 to 11.8 A. The experimental findings affirm that the DMFC

exhibits stable and reliable performance. To enhance control, advanced dynamic models and intelligent controllers were

developed and compared, including the Radial Basis Function Neural Network–Proportional-Integral Controller (RBNNPIC),

a Fuzzy adaptive PI controller, and a Ziegler–Nichols-based PI controller. The RBNN-based controller demonstrates

fast convergence and strong capability to avoid local optima, highly effective for real-time DMFC temperature regulation.

Further, the experimental validation confirmed that the proposed RBNN-based control strategy was successfully implemented

in a temperature-regulated DMFC system. Controller performance was assessed based on CPM indices for servo response

and load rejection, which are lowest among other controllers. The results clearly establish the superiority of the RBNN-PIC

over the existing controllers.

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