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    Optical Fiber Sensing for Fast Hotspot Detection in Superconducting Fault Current Limiters

    → Europe/Zurich
    30/7-010 (CERN)

    30/7-010

    CERN

    20
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    Arooj Akbar (Ecole Polytechnique Fédérale de Lausanne, Switzerland), Bertrand Dutoit (EPFL), Zhisheng Yang (Ecole Polytechnique Fédérale de Lausanne, Switzerland)
    Description

    Abstract        At EPFL a Mach-Zehnder interferometer based optical fiber sensing technique has been developed that  is capable of sensing even singular hotspots in the superconductor within 10 ms, allowing action to be  taken within 30 ms for the protection of Superconducting Fault Current Limiters (SFCLs). The response  achieved is rapid, comprising clearly visible periodic oscillations in response to heating in the  superconductor. The setup required for this technique is not only simple but also low cost making it a  significant breakthrough for the future of superconducting power applications. However, tests need  to be performed on coils comprising longer lengths of superconductor with the goal of technique  optimization and integration formulation.

    Abstract_CernSeminar_EPFL.pdf
    PresentationEPFLCERN_v3.pdf
    PresentationEPFLCERN_v3.pptx
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