Inductive power transfer in e-textile applications: Reducing the effects of coil misalignment

Dibin Zhu, N. J. Grabham, L. Clare, B. H. Stark, S. P. Beeby

    Research output: Contribution to conferencePaper

    17 Citations (Scopus)
    135 Downloads (Pure)


    Wireless power transfer (WPT) is an attractive approach for recharging wearable technologies and therefore textile implementations are of interest. Such textile WPT systems are inherently flexible and prone to misalignments of the inductively coupled coils which affects performance. This paper investigates two methods to reduce the effect of coil misalignment in inductive WPT in e-textile applications: a single large transmitter coil and a switched transmitter coil array. Transmission efficiency and maximum received power are determined for both methods, and compared against the baseline system that uses a single small transmitter coil. All coils used in this study were fabricated using automated stitching of PTFE insulated flexible wire onto a polyester/cotton textile. This fabrication method allows coils to be sewn directly to existing garments.
    Original languageEnglish
    Publication statusPublished - 2015
    EventWireless Power Transfer Conference - Boulder, United States
    Duration: 13 May 201515 May 2015


    ConferenceWireless Power Transfer Conference
    Abbreviated titleWPTC
    Country/TerritoryUnited States

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    • Misalignment
    • e-textiles
    • flexible coil
    • wireless power transfer


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