Method to determine fuel cell output power and capacitance of electric double layer capacitor for a traction system of hybrid powered railway vehicles considering output delay of fuel cell

Fuel Cell(FC) power should be minimized because of its expensive cost. when it is applied to hybrid powered rail- way vehicles with Electric Double Layer Capacitors(EDLCs). This paper proposes a method to determine FC output power and EDLC capacitance in order to minimize the hybrid system, considering the time delay of FC output power and energy losses for running. This paper also verifies the energy management strategy for EDLCs with FC output power and for power flow controls of DC/DC chopper by a ikw class experimental system.