Abstract |
The use of Energy Storage Systems (ESSs) can improve the energy efficiency of railway systemsassisting the traction system and recovering regenerative braking energy. In this paper, a mediumfrequency modular converter using SiC MOSFETs is analyzed to interface the ESS with a 1500 Vdccatenary and the load.The use of SiC MOSFETs allows the increase of the switching frequency and the reduction of the size,volume and weight of the transformer. A modular topology can provide redundancy, fault toleranceand enables system scalability. The maximum power and switching frequency of one module isestimated using commercially available semiconductors. |