Cascaded commutation circuit for a hybrid DC breaker with dynamic control on fault current and DC breaker voltage

Shan, Yunhai and Lim, Tee C. and Finney, Stephen J. and Guang, Weixiao and Williams, Barry W. and Holliday, Derrick and Ding, Xiao (2017) Cascaded commutation circuit for a hybrid DC breaker with dynamic control on fault current and DC breaker voltage. IET Power Electronics. ISSN 1755-4535

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    Abstract

    This paper proposed a cascaded commutation circuit based on current commutation approach for low-to-medium voltage DC fault current interruption, without snubber circuits, which slows the fault current di/dt prior to current-zero and the rate of rise of the transient recovery voltage dv/dt across the mechanical breaker contacts after current zero. The proposed dynamic control of the fault current di/dt and circuit breaker voltage dVVCB/dt increase the fault current interruption capabilityat the first and second current-zeros. Detailed mathematical equations are presented to evaluate the operational waveform profile and the validity of the cascaded commutation principle is confirmed by simulation and experimental results at 600Vdc, 110A and 330A.

    Author(s):Shan, Yunhai, Lim, Tee C., Finney, Stephen J. ORCID logoORCID: https://orcid.org/0000-0001-5039-3533, Guang, Weixiao, Williams, Barry W., Holliday, Derrick ORCID logoORCID: https://orcid.org/0000-0002-6561-4535 and Ding, Xiao
    Item type:Article
    ID code:59286
    Notes:This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at the IET Digital Library
    Keywords:hybrid DC breaker, current commutation, current-zero, fault interruption, dynamic cfontrol, fault current, waveform profile, cascaded commutation principle, Electrical engineering. Electronics Nuclear engineering, Electrical and Electronic Engineering
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:06 Jan 2017 10:42
    Last modified:13 Aug 2019 00:36
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/59286
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