关键词: 仿真分析, 计算工况, 额定容量, 动态特性, 应用建议

Abstract: To determine whether the hydrogen release rate of a solid-state hydrogen storage tank can meet the power response requirements of a hydrogen-powered inland river vessel, a simulation analysis was conducted to study its operational characteristics. A 3 000-ton inland container ship was selected as the research object. A whole-ship multi-system integrated power simulation model and a solid-state hydrogen tank model were developed in MATLAB/Simulink. Two calculation conditions were designed: calculating the minimum lithium battery capacity configuration and analyzing the dynamic characteristics of the solid-state hydrogen tank. The results show that, while satisfying the target speed (with a mean squared error of less than 5% between feedback and target speeds), the calculation of minimum lithium battery capacity must account for both the depth of discharge and the limitation imposed by the maximum charging current on the rated capacity. When the lithium battery is configured to minimum capacity, the hydrogen storage mass fraction, temperature, and pressure of the solid-state hydrogen tank remain within the design limits throughout the entire voyage. Additionally, the heat output of the fuel cell meets the thermal demand during hydrogen release from the solid-state hydrogen tank. These results indicate that the hydrogen release rate of the solid-state hydrogen tank can satisfy the propulsion power response requirements of the target vessel. Finally, suggestions for practical application are provided: under low-load conditions, the temperature and flow rate of the circulating heating water for the solid-state hydrogen tank must be dynamically adjusted according to hydrogen consumption demand; otherwise, the tank pressure and temperature may exceed allowable limits. To avoid a sharp pressure drop during the initial hydrogen release stage, a buffer tank should be configured and operated in conjunction with the solid-state hydrogen tank in practical applications.

Key words: simulation analysis, calculation condition, rated capacity, dynamic characteristics, application suggestions