DC/DC converters based on hybrid MMC for HVDC grid interconnection

Zeng, Rong and Xu, Lie and Yao, Liangzhong; (2015) DC/DC converters based on hybrid MMC for HVDC grid interconnection. In: 11th IET International Conference on AC and DC Power Transmission. IET, pp. 1-6. ISBN 978-1-84919-982-7 (https://doi.org/10.1049/cp.2015.0090)

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Abstract

This paper presents a multi-terminal high-power DC/DC converter configuration based on hybrid MMC topology with fault blocking capability for interconnecting HVDC systems. Its main functions include bidirectional power flow, step-up and step-down operation and fault isolation equivalent to a DC circuit breaker. By contrast to the conventional MMC based DC/DC converter, the proposed DC/DC converter with hybrid MMC configuration has the advantage of being able to block the DC/DC converter terminal connecting to faulty DC grid section, while continue operating the other terminals connected to healthy DC grid sections. The proposed DC/DC converter operation is analyzed and its control is described. Simulation results using Matlab/Simulink are presented to demonstrate the robust performance during dc fault conditions.

  • Item type:Book Section
    ID code:55568
    Dates:
    Date
    Event
    1 February 2015
    Published
    Notes:This paper is a postprint of a paper submitted to and accepted for publication in the 11th IET International Conference on AC and DC Power Transmission and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:18 Feb 2016 14:15
    Last modified:20 Apr 2024 03:26
    URI:https://strathprints.strath.ac.uk/id/eprint/55568
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