Quasi-resonant multilevel converter for supercapacitor energy storage systems

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4 Citations (Scopus)

Abstract

There are several topologies that are used in multilevel converters. Most of them use hard-switching techniques to achieve the objective, particularly in modular multilevel converters. It is well known that hard-switching topologies are easier to control but has more switching power losses than soft-switching topologies. Usually, this is not a problem for multilevel converters attached with batteries, where the switching frequency can be kept at a low value. However, in converters for supercapacitors, a very high efficiency and compact design is needed. This is because, the supercapacitors have a very low voltage (∼2.7V) and a modular multilevel converter will use many modules to achieve the desired output voltage value. The use of soft-switching techniques allows the converter to work at a higher frequency by reducing the switching losses. The paper presents a quasi-resonant multilevel converter for supercapacitor storage systems. It analyses both power flow directions and simulations of a 62-supercapacitor converter were performed to validate the analysis.

Original languageEnglish
Title of host publication2017 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2017 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
ISBN (Electronic)9781538619537
DOIs
Publication statusPublished - 1 Jul 2017
Event2017 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2017 - Torino, Italy
Duration: 26 Sep 201729 Sep 2017

Publication series

Name2017 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2017 - Proceedings
Volume2018-January

Conference

Conference2017 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2017
Country/TerritoryItaly
CityTorino
Period26/09/1729/09/17

Keywords

  • DC/AC converter
  • inverter
  • multi-level
  • quasi-resonant
  • Supercapapacitors

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