Comparison of conventional and improved two-level converter during AC faults

Vozikis, Dimitrios and Alsokhiry, Fahad and Alabdulwahab, Ahmed and Adam, Grain Philip; (2020) Comparison of conventional and improved two-level converter during AC faults. In: 2020 9th International Conference on Renewable Energy Research and Application (ICRERA). IEEE, GBR, pp. 352-358. ISBN 9781728173702 (https://doi.org/10.1109/ICRERA49962.2020.9242810)

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Abstract

An improved two-level converter (I2LC) is a practical compromise between the conventional two-level converter (C2LC) and modular multilevel converter (MMC), recently proposed for dc transmission system for relatively lower dc voltages and rated powers. The I2LC inherent the ac and dc fault behaviors of the MMC and relative simplicity of C2LC. Therefore, this paper presents a detailed quantitative comparison between the ac and dc responses of the C2LC and I2LC to symmetrical and asymmetrical ac faults. It has been showing that unlike the C2LC, the I2LC provides better controllability than the C2L at system level during asymmetrical ac faults, including two operational objectives simultaneously such as balanced output currents and ripple-free dc-link current. Index Terms—ac and dc faults, two-level converter, improved two-level converter, medium and high-voltage direct current (HVDC) transmission systems.

  • Item type:Book Section
    ID code:74229
    Dates:
    Date
    Event
    27 September 2020
    Published
    1 August 2020
    Accepted
    Notes:© 2020 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.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:13 Oct 2020 14:09
    Last modified:11 Apr 2024 00:16
    URI:https://strathprints.strath.ac.uk/id/eprint/74229
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