Research on large-signal stability of SOFC-lithium battery ship DC microgrid

• DOI: 10.3389/fenrg.2024.1423931
• Publication Date: 2024-07-24T09:18:04Z
• Authors: Yibin Fang; Wanneng Yu; Weiqiang Liao; Rongfeng Yang; Chenghan Luo; Changkun Zhang; Xin Dong
• Keywords: Microgrid; SIGNAL (programming language); Lithium battery

Aiming at the solid oxide fuel cell (SOFC) applied to ship DC microgrid in face of pulse load disturbance is prone make SOFC voltage drop too large leading grid oscillation problem. In this paper, a stability criterion method for SOFC-Li battery system based on hybrid potential function proposed. Firstly, mathematical model shipboard with established and accuracy verified. Then, under disturbances constructed. Subsequently, effects impulse conditions were analysed different parameters. Based constructed criterion, simulation verification boundary operating independently or jointly lithium carried out. The experimental results show that proposed control strategy are effective accurately predicting boundary. verify effectiveness improving provide theoretical basis further research dynamic characteristics systems complex conditions.