Application of Hydrogen Fuel Cell Systems in Rail Transit Trains

［Objective］ To ensure a safer and more efficient application of hydrogen fuel cells in rail transit trains, it is crucial to analyze and address the technical challenges and bottlenecks involved in their deployment. ［Method］ The current state of hydrogen fuel cell applications in rail transit sector is reviewed, the common key technologies involved are systematically outlined, such as hydrogen fuel cell system integration and control, rail transit train hybrid power technology, rail transit train hybrid energy management technology, and hydrogen supply systems. A comparative analysis of the strengths and weaknesses of different technological approaches is provided. Based on the current application and development status of hydrogen fuel cells in rail transit trains, the existing technical challenges faced by hydrogen-powered rail transit vehicles are specifically examined. ［Result & Conclusion］ Hydrogen fuel cells are applied in multiple types of rail transit vehicles. Despite ongoing breakthroughs in critical technologies, the rail transit field still faces significant challenges, such as high-power output and traction system forward design, requiring further advancements. With continuous progress in related technology upgrades, the establishment of relevant policies and standards, and on-going technical innovations, the development prospects for hydrogen fuel cell systems in rail transit industry are increasingly promising.