A hybrid nine-arm modular multilevel converter for medium-voltage six-phase machine drives

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Diab, Mohamed S. and Elserougi, Ahmed A. and Massoud, Ahmed M. and Ahmed, Shehab and Williams, Barry W. (2018) A hybrid nine-arm modular multilevel converter for medium-voltage six-phase machine drives. IEEE Transactions on Industrial Electronics, 66 (9). pp. 6681-6691. ISSN 0278-0046 (https://doi.org/10.1109/TIE.2018.2880663)

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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 achieving 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.

  • Item type:Article
    ID code:65887
    Dates:
    Date
    Event
    15 November 2018
    Published
    24 October 2018
    Accepted
    Notes:© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. M. S. Diab, A. A. Elserougi, A. M. Massoud, S. Ahmed and B. W. Williams, "A Hybrid Nine-Arm Modular Multilevel Converter for Medium-Voltage Six-Phase Machine Drives," in IEEE Transactions on Industrial Electronics, vol. 66, no. 9, pp. 6681-6691, Sept. 2019, doi: 10.1109/TIE.2018.2880663
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:29 Oct 2018 15:19
    Last modified:12 Dec 2024 07:15
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/65887
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