Thyristor based modular multilevel converter with active full-bridge chain-link for forced commutation

Li, Peng and Finney, Stephen and Holliday, Derrick; (2016) Thyristor based modular multilevel converter with active full-bridge chain-link for forced commutation. In: Control and Modeling for Power Electronics (COMPEL), 2016 IEEE 17th Workshop on. IEEE, NOR. ISBN 9781509018161 (https://doi.org/10.1109/COMPEL.2016.7556658)

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Abstract

Voltage source converter (VSC) such as modular multilevel converter (MMC) has been intensively studied for high voltage direct current (HVDC) applications due to its flexible terminal voltage adjustment, compatibility with weak ac grid and independent active/reactive power control over conventional linecommutated-converter (LCC). However, LCC using thyristors still offers advantages such as high current capability and low semiconductor losses, making it dominant in the construction of large scale converter station. This paper investigates the potential of using thyristor to build the MMC sub-module circuitry, where an auxiliary full-bridge chain-link (FB-CL) is adopted for the controlled transition and forced commutation of main thyristorbridge, forming the proposed active forced commutated (AFC) thyristor cell. The AFC-MMC combines the advantages of LCC and MMC by the hybrid use of thyristor and self-commutated device, including the high power capacity, optimized efficiency, flexible control and enhanced fault-tolerant ability.

  • Item type:Book Section
    ID code:58656
    Dates:
    Date
    Event
    1 September 2016
    Published
    5 April 2016
    Accepted
    Notes:© 2016 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:15 Nov 2016 12:04
    Last modified:11 Apr 2024 00:10
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/58656
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