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.
|Publication status||Published - 2015|
|Event||Wireless Power Transfer Conference - Boulder, United States|
Duration: 13 May 2015 → 15 May 2015
|Conference||Wireless Power Transfer Conference|
|Period||13/05/15 → 15/05/15|
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- flexible coil
- wireless power transfer
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