Optimizing Temperature Coefficient and Frequency Response of Rogowski Coils

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    6 Citations (Scopus)

    Abstract

    This paper describes a new method for optimizing both Rogowski coil's temperature coefficient and its high frequency response. The proposed scheme is based on finding a value for coil termination resistance and for its temperature coefficient, which result in negligible change of coil output voltage versus temperature while still allowing for any damping ratio desired. The method is tested in a proof-of-concept setup with an openable, rigid Rogowski coil. The result shows that a well-damped LC-resonance of the coil is possible without having to make a compromise with temperature coefficient and vice versa. The proof-of-concept measurement is done for a broad temperature range around room temperature and works for any range where the coil's temperature expansion is sufficiently linear. At the same time, the frequency response is preserved, giving an extension of at least an order of magnitude with respect to previous work.

    Original languageEnglish
    Article number8022679
    Pages (from-to)6646-6652
    Number of pages7
    JournalIEEE Sensors Journal
    Volume17
    Issue number20
    DOIs
    Publication statusPublished - 15 Oct 2017
    MoE publication typeA1 Journal article-refereed

    Keywords

    • current measurement
    • inductive transducers
    • power systems
    • RLC circuits
    • smart grids
    • temperature dependence

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