Inductive Power transfer in E-Textile Applications: Reducing the Effects of Coil Misalignment

Dibin Zhu, Neil J. Grabham, Lindsay Clare, Bernard H. Stark, Steve P. Beeby

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

16 Citations (Scopus)
31 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
Title of host publication2015 IEEE Wireless Power Transfer Conference (WPTC 2015)
Subtitle of host publicationProceedings of a meeting held 13-15 May 2015, Boulder, Colorado, USA
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages4
ISBN (Electronic)9781467374477
ISBN (Print)9781467374484
Publication statusPublished - Aug 2015
Event2015 IEEE Wireless Power Transfer Conference, WPTC 2015 - Boulder, United States
Duration: 13 May 201515 May 2015


Conference2015 IEEE Wireless Power Transfer Conference, WPTC 2015
Country/TerritoryUnited States

Structured keywords

  • Digital Health


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


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