DC Link Control for Trains with Onboard Energy Storage using Voltage Level Signalling

Abstract

This paper addresses DC link voltage control for railway traction chains with onboard energy storage. Methods reported in the literature for DC microgrids are first studied. From this analysis, a new priority based control, which is derived from voltage level signalling method, is proposed. Simulation is used to validate the compliance of the method with all the requirements for train DC bus with onboard energy storage. Experimental results with a downscaled prototype of the system are provided to validate the method.