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

10 Citations (Scopus)
86 Downloads (Pure)

Abstract

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
Pages1-4
DOIs
Publication statusPublished - 2015
EventWireless Power Transfer Conference - Boulder, United States
Duration: 13 May 201515 May 2015

Conference

ConferenceWireless Power Transfer Conference
Abbreviated titleWPTC
CountryUnited States
CityBoulder
Period13/05/1515/05/15

Bibliographical note

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Keywords

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

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    Zhu, D., Grabham, N. J., Clare, L., Stark, B. H., & Beeby, S. P. (2015). Inductive power transfer in e-textile applications: Reducing the effects of coil misalignment. 1-4. Paper presented at Wireless Power Transfer Conference, Boulder, United States. https://doi.org/10.1109/WPT.2015.7140116