A nine-arm modular multilevel converter (9A-MMC) for six-phase medium voltage motor drives

Ahmed A. Elserougi, Ayman Abdel-Khalik, Ahmed M. Massoud, Shehab Ahmed

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

6 Citations (Scopus)

Abstract

Dual three-phase (asymmetrical six-phase) induction motors have received significant attention in high power medium voltage drive applications. Typically, two three-phase voltage source converters are needed to feed such a drive system. In medium voltage applications, multilevel inverters are preferred as they provide a stepped output voltage waveform that reduces dv/dt stresses and provides a better output current waveform, which reflects positively on the machine developed torque and overall drive performance. Among different multilevel inverters, the Modular Multilevel Converter (MMC) has recently shown promise in medium and high voltage applications. For a dual three-phase machine, two MMCs with 6 arms each, are needed. This paper proposes a nine-arm MMC (9A-MMC) to drive such a motor. The proposed approach reduces the number of involved arms by 25%, i.e. reduces the number of required dc capacitors, semiconductor devices and their gate drive circuits, which reduces system complexity and cost. A complete analysis of the proposed system is presented and a simulation model is used to verify the proposed concept.

Original languageEnglish
Title of host publicationIECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages129-134
Number of pages6
ISBN (Electronic)9781479917624
DOIs
Publication statusPublished - 25 Jan 2016
Event41st Annual Conference of the IEEE Industrial Electronics Society, IECON 2015 - Yokohama, Japan
Duration: 9 Nov 201512 Nov 2015

Other

Other41st Annual Conference of the IEEE Industrial Electronics Society, IECON 2015
CountryJapan
CityYokohama
Period9/11/1512/11/15

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Keywords

  • Medium Voltage Motor Drive
  • Modular Multi-level Converter
  • Mulit-phase Machine
  • Nine-arms MMC

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering

Cite this

Elserougi, A. A., Abdel-Khalik, A., Massoud, A. M., & Ahmed, S. (2016). A nine-arm modular multilevel converter (9A-MMC) for six-phase medium voltage motor drives. In IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society (pp. 129-134). [7392087] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IECON.2015.7392087