The Concept of Urban Railway Surplus Power System Utilization for Supplying Power to Hydrogen Charging Stations

Hydrogen mobility in Korea plans to supply 850,000 units by 2030. It is necessary to expand hydrogen production and charging facilities in urban areas with good accessibility. In order to build a hydrogen charging station in an urban area, the facility site of test bed should be optimized and minimized. In this paper, a method to utilize the surplus power of urban railways is proposed such as a integrated power flow from existing railway station and the requirement of hydrogen charging systems. It includes production specifications for power converters for linking power supply systems with hydrogen charging systems such as optimal converter quantity. This paper contributes to expand hydrogen production less costly due to railway surplus power and a limited downtown space.