Design of Coupled Resonators for Wireless Power Transfer to Mobile Devices using Magnetic Field Shaping

Abstract

In this paper, we designed the magnetically coupled resonators for wireless power transfer to mobile devices using field shaping technique. Power transfer to mobile devices is normally sensitive to variation of distance and alignment between transmitters and receivers. The magnetic field shaping technique, which is applied by On-line Electric Vehicle (OLEV) system, is considered to compensate the sensitivity, to reduce electromagnetic fields (EMF) around the receivers, and also to improve efficiency of power transfer [1]. We developed miniaturized coupled resonators to cover mobile devices, and enhanced coupling effect with modified formation of coupled resonators. Also, the coupled resonators are designed to receive power stably, less sensitive to variation of distance and alignment. We present measurement results with s-parameter value of the amount of power transferred.

Meeting Name

2012 IEEE International Symposium on Electromagnetic Compatibility, EMC 2012 (2012: Aug. 5-10, Pittsburgh, PA)

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Coupled Resonator; Coupling Effect; Measurement Results; Power Transfers; Shaping Techniques; Wireless Power Transfer, Alignment; Electric Vehicles; Electromagnetic Compatibility; Electromagnetic Fields; Magnetic Fields; Mobile Devices; Scattering Parameters, Crystal Resonators

International Standard Book Number (ISBN)

978-146732061-0

International Standard Serial Number (ISSN)

1077-4076

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

10 Aug 2012

Link to Full Text

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