Design and Investigation on Flexible Inductive Power Tranmission Shields
Abstract
Inductive power transmission coils are more and more used to charge devices wirelessly. In many applications, robustness, small size and flexibility of the used coils are required. For that, a design of flexible coil associated to a flexible ferrite shield becomes a necessity in order to achieve an efficient power transfer. In this paper, a new material composition for the ferrite shield have been proposed. It guarantees a better flexibility and performance using a simple fabrication process. Therefore, an optimization of the ferrite shield concentrations and thicknesses are performed. The influence of different prepared ferrite shield on the coil self-inductance and quality factor are investigated. Results shows that a concentration of ferrite of about 85 wt. % present the highest efficiency in case of high thickness with a self-inductance of 20.5 µH while in low concentration the measured coil self-inductance is around 17.5 µH.
Event details
- Event
- tc19-2019