A Hybrid Nine-Arm Modular Multilevel Converter for Medium-Voltage Six-Phase Machine Drives

Mohamed Said Diab, Ahmed Elserougi, Ahmed M. Massoud, Shehab Ahmed, Barry Williams

Research output: Contribution to journalArticle

Abstract

The nine-arm modular multilevel converter (9A-MMC) has been recently proposed as a reduced MMC topology variation for six-phase drive applications, with 25% reduction in the number of employed arms and associated components, compared to a standard dual three-phase MMC, however with a limited output voltage amplitude. This paper proposes a hybrid 9A-MMC comprised of half-bridge submodules (SMs) in both the upper and lower arms, and full-bridge SMs in the middle arms. By employing the negative-voltage state of the full-bridge SMs, the hybrid 9A-MMC avoids the limitations imposed on the dc-link voltage utilization, while achieves further reduction in the component count, compared to a standard 9A-MMC with identical half-bridge SMs. The operating principles of the proposed hybrid 9A-MMC are illustrated with mathematical analysis, while its characteristics are verified through both simulation and experimentation. An assessment of the proposed topology quantifying its employed components is also provided, in comparison to other MMC-based six-phase machine drives.

Original languageEnglish
JournalIEEE Transactions on Industrial Electronics
DOIs
Publication statusAccepted/In press - 1 Jan 2018

Fingerprint

Electric potential
Topology

Keywords

  • Capacitors
  • Electrical engineering
  • Hybrid modular multilevel converter (MMC)
  • Inverters
  • Legged locomotion
  • medium-voltage machine drive
  • Modular multilevel converters
  • nine-arm MMC
  • six-phase machines
  • Standards
  • Topology

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

A Hybrid Nine-Arm Modular Multilevel Converter for Medium-Voltage Six-Phase Machine Drives. / Diab, Mohamed Said; Elserougi, Ahmed; Massoud, Ahmed M.; Ahmed, Shehab; Williams, Barry.

In: IEEE Transactions on Industrial Electronics, 01.01.2018.

Research output: Contribution to journalArticle

@article{40c8df28c5ee47d5ad0f64545f1e7a96,
title = "A Hybrid Nine-Arm Modular Multilevel Converter for Medium-Voltage Six-Phase Machine Drives",
abstract = "The nine-arm modular multilevel converter (9A-MMC) has been recently proposed as a reduced MMC topology variation for six-phase drive applications, with 25{\%} reduction in the number of employed arms and associated components, compared to a standard dual three-phase MMC, however with a limited output voltage amplitude. This paper proposes a hybrid 9A-MMC comprised of half-bridge submodules (SMs) in both the upper and lower arms, and full-bridge SMs in the middle arms. By employing the negative-voltage state of the full-bridge SMs, the hybrid 9A-MMC avoids the limitations imposed on the dc-link voltage utilization, while achieves further reduction in the component count, compared to a standard 9A-MMC with identical half-bridge SMs. The operating principles of the proposed hybrid 9A-MMC are illustrated with mathematical analysis, while its characteristics are verified through both simulation and experimentation. An assessment of the proposed topology quantifying its employed components is also provided, in comparison to other MMC-based six-phase machine drives.",
keywords = "Capacitors, Electrical engineering, Hybrid modular multilevel converter (MMC), Inverters, Legged locomotion, medium-voltage machine drive, Modular multilevel converters, nine-arm MMC, six-phase machines, Standards, Topology",
author = "Diab, {Mohamed Said} and Ahmed Elserougi and Massoud, {Ahmed M.} and Shehab Ahmed and Barry Williams",
year = "2018",
month = "1",
day = "1",
doi = "10.1109/TIE.2018.2880663",
language = "English",
journal = "IEEE Transactions on Industrial Electronics",
issn = "0278-0046",
publisher = "IEEE Industrial Electronics Society",

}

TY - JOUR

T1 - A Hybrid Nine-Arm Modular Multilevel Converter for Medium-Voltage Six-Phase Machine Drives

AU - Diab, Mohamed Said

AU - Elserougi, Ahmed

AU - Massoud, Ahmed M.

AU - Ahmed, Shehab

AU - Williams, Barry

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The nine-arm modular multilevel converter (9A-MMC) has been recently proposed as a reduced MMC topology variation for six-phase drive applications, with 25% reduction in the number of employed arms and associated components, compared to a standard dual three-phase MMC, however with a limited output voltage amplitude. This paper proposes a hybrid 9A-MMC comprised of half-bridge submodules (SMs) in both the upper and lower arms, and full-bridge SMs in the middle arms. By employing the negative-voltage state of the full-bridge SMs, the hybrid 9A-MMC avoids the limitations imposed on the dc-link voltage utilization, while achieves further reduction in the component count, compared to a standard 9A-MMC with identical half-bridge SMs. The operating principles of the proposed hybrid 9A-MMC are illustrated with mathematical analysis, while its characteristics are verified through both simulation and experimentation. An assessment of the proposed topology quantifying its employed components is also provided, in comparison to other MMC-based six-phase machine drives.

AB - The nine-arm modular multilevel converter (9A-MMC) has been recently proposed as a reduced MMC topology variation for six-phase drive applications, with 25% reduction in the number of employed arms and associated components, compared to a standard dual three-phase MMC, however with a limited output voltage amplitude. This paper proposes a hybrid 9A-MMC comprised of half-bridge submodules (SMs) in both the upper and lower arms, and full-bridge SMs in the middle arms. By employing the negative-voltage state of the full-bridge SMs, the hybrid 9A-MMC avoids the limitations imposed on the dc-link voltage utilization, while achieves further reduction in the component count, compared to a standard 9A-MMC with identical half-bridge SMs. The operating principles of the proposed hybrid 9A-MMC are illustrated with mathematical analysis, while its characteristics are verified through both simulation and experimentation. An assessment of the proposed topology quantifying its employed components is also provided, in comparison to other MMC-based six-phase machine drives.

KW - Capacitors

KW - Electrical engineering

KW - Hybrid modular multilevel converter (MMC)

KW - Inverters

KW - Legged locomotion

KW - medium-voltage machine drive

KW - Modular multilevel converters

KW - nine-arm MMC

KW - six-phase machines

KW - Standards

KW - Topology

UR - http://www.scopus.com/inward/record.url?scp=85056693955&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85056693955&partnerID=8YFLogxK

U2 - 10.1109/TIE.2018.2880663

DO - 10.1109/TIE.2018.2880663

M3 - Article

JO - IEEE Transactions on Industrial Electronics

JF - IEEE Transactions on Industrial Electronics

SN - 0278-0046

ER -