Experimental tests on a superconducting hybrid DC circuit breaker

Xiaoze Pei, Oliver Cwikowski, Alexander C. Smith, Michael Barnes

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    Direct Current (DC) transmission systems are widely recognized offering significant potential for long distance high power delivery. DC circuit breakers are a key enabling technology for managing faults in multi-terminal DC networks (MTDC). However, DC current breaking is much more challenging than in AC systems because there is no natural zero-crossing of the current to isolate the fault. Superconductor materials are ideal for DC networks because they do not incur any losses when operating with pure DC current. A superconducting hybrid DC circuit breaker, which uses the intrinsic characteristics of the superconductor material, has the potential to offer low operating losses and fast operation.
    This paper focuses on the operation analysis and design of the superconducting hybrid DC circuit breaker. A low voltage DC circuit breaker prototype has been built using a multi-strand Magnesium Diboride (MgB2) coil, a vacuum interrupter and an IGBT module. This prototype successfully demonstrated interrupting 500 A DC within 4.5 msecs. The paper also includes a detailed analysis of the test results and the implications for practical
    Original languageEnglish
    Title of host publication2016 Applied Superconductivity Conference
    Publication statusPublished - 4 Sept 2016
    EventApplied Superconductivity Conference 2016 - Colorado Convention Center, Denver, Colorado, United States
    Duration: 4 Sept 20169 Sept 2016
    http://ascinc.org/

    Conference

    ConferenceApplied Superconductivity Conference 2016
    Abbreviated titleASC 2016
    Country/TerritoryUnited States
    CityDenver, Colorado
    Period4/09/169/09/16
    Internet address

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