Active Voltage Control of Wayside Energy Storage System for the Effective Utilization of Regenerative Power in DC-Electrified Railway

Abstract

A power control method is proposed to improve the energy saving effect of wayside energy storage systems focusing on the power flow control with distant trains. The proposed method controls the filter capacitor voltage of the wayside energy storage system to suppress the fluctuation of the train voltage utilizing a feeder circuit model based on the information of trains and substations. The proposed control method was verified utilizing numerical simulations, confirming the increase of regenerative energy and decrease of substation output energy with respect to the conventional method.