Modular multilevel converter based supercapacitor integration strategies and their comparative evaluation for railway traction drive systems

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Colleges, School and Institutes

Abstract

Modular multilevel converters are an emerging class of converters for traction applications. Supercapacitor energy storage integration within the sub-module provides multiple advantages compared to the traditional two-level design in terms of reliability, power quality, drive efficiency and recovery of regenerative energy. This paper explores different topologies of modular multilevel converters with integrated supercapacitor energy storage system for the typical voltages (750 V, 1.5 kV and 3 kV) of the railway traction system. The paper first derives different ways of integrating supercapacitor modules using a modular multilevel configuration. Thereafter, a detailed comparison in terms of converter cost/VA rating, reliability and suitability for traction drive systems have been presented to identify the most suitable modular converter scheme with integrated energy storage.

Details

Original languageEnglish
Title of host publication2015 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015
Publication statusPublished - 27 Oct 2015
Event17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015 - Geneva, Switzerland
Duration: 8 Sep 201510 Sep 2015

Conference

Conference17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015
CountrySwitzerland
CityGeneva
Period8/09/1510/09/15

Keywords

  • energy storage, Multilevel converters, reliability, supercapacitors, traction systems