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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Advanced Clean Fuel Technologies
Volume 12 - 2024 | doi: 10.3389/fenrg.2024.1423931
This article is part of the Research Topic Life Cycle Analysis of Alternative Fuels for the Maritime Sector and Similar Industry View all articles

Research on Large-Signal Stability of SOFC-Lithium Battery Ship DC Microgrid

Provisionally accepted
YiBin Fang YiBin Fang Wanneng Yu Wanneng Yu *Weiqiang Liao Weiqiang Liao Rongfeng Yang Rongfeng Yang Chenghan Luo Chenghan Luo Changkun Zhang Changkun Zhang Xin Dong Xin Dong
  • Jimei University, Xiamen, China

The final, formatted version of the article will be published soon.

    Addressing the issue of grid oscillations arising from the susceptibility of DC microgrids to disturbances from impulsive loads, this paper proposes a stability criterion method based on mixed potential functions for solid oxide fuel cell (SOFC) systems. Firstly, a mathematical model of shipboard DC microgrids incorporating SOFC is established. Next, an analysis is conducted on the impact of SOFC fuel utilization rate and DC/DC controller parameters on system stability under impulsive load conditions. Subsequently, a stability criterion based on mixed potential functions for the system under large disturbances is constructed. Finally, simulation verification of the stability boundary conditions for SOFC systems operating either independently or in conjunction with lithium battery systems based on this criterion is performed. Experimental results validate the effectiveness of the proposed stability criterion and control strategies.

    Keywords: SOFC Mathematical Model, Dual closed-loop control, DC microgrid, Mixed Potential Functions, Large-Signal Stability Criterion

    Received: 26 Apr 2024; Accepted: 12 Jun 2024.

    Copyright: © 2024 Fang, Yu, Liao, Yang, Luo, Zhang and Dong. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Wanneng Yu, Jimei University, Xiamen, China

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