Investigating the best topology for Traction Power Substations (TPSs) in a Medium Voltage DC (MVDC) railway electrification system

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Abstract

Medium or high voltage DC railway electrification systems have been proposed since 1989. Such systems benefit from lowest conduction losses and voltage drops typical of DC systems and can efficiently integrate renewable energy sources in the railway supply system. However, no industrial application has been developed for the limitations connected to DC switchgears and voltage transformation on the trains. The first limitation can be addressed with a suitable power converter topology for medium voltage DC (MVDC) traction power substations (TPSs) with a controlled output current. In this paper, three different AC-DC converter topologies, i.e., bi-directional thyristor converter, cascaded two-level voltage source converter (VSC), and modular multilevel converter with full-bridge submodules (MMC-FB), are analytically compared in terms of their efficiencies and device requirements for application to MVDC TPSs.
Original languageEnglish
Title of host publication2021 23rd European Conference on Power Electronics and Applications (EPE'21 ECCE Europe)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISBN (Electronic)978-9-0758-1537-5
ISBN (Print)978-1-6654-3384-6
Publication statusPublished - 25 Oct 2021
EventThe 23rd European Conference on Power Electronics and Applications - 100% virtual, Ghent, Belgium
Duration: 6 Sep 202110 Sep 2021
Conference number: 23rd
http://www.epe2021.com/

Publication series

NameEuropean Conference on Power Electronics and Applications
PublisherIEEE

Conference

ConferenceThe 23rd European Conference on Power Electronics and Applications
Abbreviated titleEPE’21 ECCE Europe
Country/TerritoryBelgium
CityGhent
Period6/09/2110/09/21
Internet address

Bibliographical note

© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Keywords

  • thyristors
  • reactive power
  • substations
  • voltage
  • swithces
  • railway electrification
  • traction power supplies

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