A new three-level switched-capacitor submodule for modular multilevel converters

Ahmed Elserougi, Shehab Ahmed, Ahmed Massoud

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

Conventionally, only one out of the two capacitors in a three-level submodule is involved in the arm current path to generate the first non-zero voltage level (E) in modular multilevel converters (MMCs). While two capacitors are connected in series to obtain the second non-zero voltage level (2E). In this paper and in order to generate the first non-zero voltage level (E); parallel-connection of the two capacitors is proposed which in turn forces the capacitors voltages to be equal, as a result the parallel-connection supports employing a single voltage sensor per the proposed module instead of using two voltage sensors which reduces the hardware and software complexity of the control system. A new switched capacitor submodule (SCSM) is proposed to enable this feature. A detailed illustration of the operational concept of the proposed architecture is presented in this work. The simulation results for an MMC with the proposed SCSM is presented to validate the proposed concept.

Original languageEnglish (US)
Title of host publicationProceedings - 2016 IEEE International Conference on Industrial Technology, ICIT 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages234-239
Number of pages6
ISBN (Electronic)9781467380751
DOIs
StatePublished - May 19 2016
Externally publishedYes
EventIEEE International Conference on Industrial Technology, ICIT 2016 - Taipei, Taiwan, Province of China
Duration: Mar 14 2016Mar 17 2016

Publication series

NameProceedings of the IEEE International Conference on Industrial Technology
Volume2016-May

Conference

ConferenceIEEE International Conference on Industrial Technology, ICIT 2016
Country/TerritoryTaiwan, Province of China
CityTaipei
Period03/14/1603/17/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Keywords

  • Modular Multilevel Converter
  • Parallel-connection of capacitors
  • Reduced number of sensors
  • Switched Capacitor Submodule

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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