Electromagnetic Interference and Radiation from Wireless Power Transfer Systems

Abstract

Wireless power transfer (WPT) technology is becoming increasingly popular for wireless charging of mobile phones and electrical vehicles. Because high power energy is transferred via air, however, the problem of electromagnetic radiated emission from WPT systems is expected to be serious. In this paper, an electromagnetic interface (EMI) and radiation from WPT systems are discussed. Three example technologies for suppressing the electromagnetic-field (EMF) noise and EMI noise from WPT systems are presented. EMF noise from different receiving (RX) coil topologies is characterized and an EMF noise suppression technology using a ferromagnetic material and metallic shielding is analyzed. A handheld resonant magnetic coupling charger (HH-RMCC), a WPT system with very low EMI noise, is then introduced. The proposed technologies for suppressing EMF and EMI noise from a WPT system will be helpful to design engineers.

Meeting Name

2014 IEEE International Symposium on Electromagnetic Compatibility, EMC 2014 (2014: Aug. 3-8, Raleigh, NC)

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Electromagnetic Field Noise; Electromagnetic Interference; Wireless Power Transfer

International Standard Serial Number (ISSN)

1077-4076

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2014 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

08 Aug 2014

Link to Full Text

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