The article discusses research conducted on optimizing the high-efficiency operation of fuel cell systems, particularly focusing on multi-stack fuel cell systems. The study aims to enhance efficiency by identifying the high-efficiency operating region and minimizing hydrogen consumption. By utilizing a state machine control method and an equivalent hydrogen consumption minimization strategy, the research introduces a novel approach to improve the operational efficiency and stability of multi-stack fuel cell systems. The proposed method is validated through simulation using MATLAB/Simulink, demonstrating its effectiveness in identifying the high-efficiency operating region, reducing hydrogen consumption, and elevating system stability. Additionally, the article mentions real-world applications of fuel cell technology in high-power vehicles like the Mercedes-Benz GenH2 hydrogen fuel cell truck with a 1000 km range and the French Arles low-floor passenger train driven by fuel cells. It also highlights the achievements of East Japan Railway Corporation in developing a new hybrid train powered by fuel cells and lithium batteries. These examples showcase the growing potential of fuel cell technology in various transportation sectors. Overall, the study emphasizes the importance of optimizing energy management schemes to enhance system efficiency and reduce energy consumption in hybrid energy systems.