Journal
PROCEEDINGS OF THE IEEE
Volume 101, Issue 6, Pages 1332-1342Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPROC.2013.2247551
Keywords
Electromagnetic field (EMF) noise; magnetic field resonance; reactive resonant current loop; wireless power transfer (WPT)
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Funding
- National Research Foundation of Korea (NRF)
- Korean Government (MEST) [2011-0018253, 2010-0029179]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10040133] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2010-0028680, 2010-0029179, 2013R1A1A2009547] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this paper, we introduce the basic principles of wireless power transfer using magnetic field resonance and describe techniques for the design of a resonant magnetic coil, the formation of a magnetic field distribution, and electromagnetic field (EMF) noise suppression methods. The experimental results of wireless power transfer systems in consumer electronics applications are discussed in terms of issues related to their efficiency and EMF noise. Furthermore, we present a passive shielding method and a magnetic field cancellation method using a reactive resonant current loop and the utilization of these methods in an online electric vehicle (OLEV) system, in which an OLEV green transportation bus system absorbs wireless power from power cables underneath the road surface with only a minimal battery capacity.
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