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Shielded coil structure suppressing leakage magnetic field from 100W-class wireless power transfer system with higher efficiency

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5 Author(s)
Hongseok Kim ; Div. of Future Vehicle, Korea Adv. Inst. of Sci. & Technol. (KAIST), Daejeon, South Korea ; Chiuk Song ; Jonghoon Kim ; Jiseong Kim
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In this paper, the shielded coil structure using the ferrites and the metallic shielding is proposed. It is compared with the unshielded coil structure (i.e. a pair of circular loop coils only) to demonstrate the differences in the magnetic field distributions and system performance. The simulation results using the 3D Finite Element Analysis (FEA) tool show that it can considerably suppress the leakage magnetic field from 100W-class wireless power transfer (WPT) system with the enhanced system performance.

Published in:

Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications (IMWS), 2012 IEEE MTT-S International

Date of Conference:

10-11 May 2012