A Method to Design Capacity of Onboard Energy Storage Device for Emergency Operation Based on Effective Balance of Power and Energy

Abstract

Recently, Energy Storage Devices (ESDs) are introduced to railway vehicles in order to operate even in an emergency case such as power outage. However, no simultaneous design methods of power capacity and energy capacity of onboard ESD for emergency operation have been proposed. In this paper, a model for the calculation of power and energy capacity of onboard ESD which are utilized in an emergency case is proposed. Furthermore, we proposed a method to design power and energy capacity of onboard ESD considering required power for traction and auxiliary power supply system.