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http://dx.doi.org/10.5207/JIEIE.2013.27.11.096

Efficiency and EMF Safety Analysis of Wireless Power Transfer System Using Standard Human Model  

Shin, Hansu (Department of Electrical Engineering, Soongsil University)
Byun, Jin-Kyu (Department of Electrical Engineering, Soongsil University)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.27, no.11, 2013 , pp. 96-103 More about this Journal
Abstract
In this paper, resonant wireless power transfer systems are designed with double loop resonant coils for the resonant frequency of 150kHz. The transfer efficiency characteristics is analyzed according to the coil size, and the distance and misalignment between the coils. Then the change in efficiency is investigated when a human model is located between the resonant coils using the homogeneous human phantom of IEC-62311 standard. Also, in order to assess the safety of the wireless power transfer system, the induced current density inside the human model is calculated when it is exposed to the magnetic field of a plane wave and resonant coil. Then, the results are compared with the exposure limits in the EMF (electromagnetic field) safety guidelines.
Keywords
Wireless Power Transfer; Efficiency; Human Body Safety;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 S. I. Park, "A Survey on the Wireless Power Transfer Market", TTA Journal, Vol.138, pp. 40-44, 2011.
2 S. O. Lim and S. J. Kang, "Recent Trends in the Standardization of Wireless Power Transfer", TTA Journal, No.129, pp. 80-85, 2012.
3 S. H. Cheon, Y. -H. Kim, S. -Y. Kang, M. L. Lee, J. -M. Lee, and T.Y. Zyung, "Circuit Model Based Analysis of a Wireless Energy-Transfer System Via Coupled Magnetic Resonances", IEEE, Vol.58, No.7, pp. 2906-2914, 2011.
4 A. Kurs, A. Karakis, R. Moffatt, J. D. Joannopoulos, P. Fisher, and M. Soljacic, "Wireless Power Transmission Via Strongly Coupled Magnetic Resonances," Science, Vol.317, pp. 83-86, July. 2007.   DOI   ScienceOn
5 A. Kurs, "Power Transfer Through Strongly Coupled Resonances," M. Sc. Thesis, MIT, 2007.
6 Y. J. Ju, "Magnetic-Resonance Wireless Power Transfer System and Its EMF Safety at 100kHz Band", Ph.D. Thesis, Dankook University, Korea, 2012.
7 Y. H. Jang, J. S. Kwon, J. S. Park, J. H. Choi, "Design of a High Efficiency Resonator for Wireless Power Transfer", The Journal Of Korean Institute Of Electromagnetic Engineering and Science, Vol. 22, No.9, 2011.   과학기술학회마을   DOI   ScienceOn
8 J. Choi and C. Seo, "High-efficiency Wireless Energy Transmission Using Magnetic Resonance Based on Negative Refractive Index Metamaterial with Relative Permeability Equal to -1", PIER, Vol. 106, pp. 33-47 2010.   DOI
9 F. E. Terman, "Radio Engineers Handbooks", First Edition, McGraw-Hill, London, 1950.
10 IEC-62311, "Assessment of Electronic and Electrical Equipment Related to Human Exposure Restrictions for Electromagnetic Fields (0Hz-300GHz)", 2007.
11 S. Gabriel, R. W. Lau, and C. Gabriel, "The Dielectric Properties of Biological Tissue: Part III-Parametric Models for the Dielectric Spectrum of Tissues", Phys. Med. Biol., Vol. 41, pp. 2271-2293, 1996.   DOI   ScienceOn
12 International Commission on Non-Ionizing Radiation Protection, "Guidelines for Limiting Exposure to Time-varying Electric, Magnetic, and Electromagnetic Fields (up to 300 GHz)", Health Physics, Vol.74, No.4, pp. 494-522, 1998.
13 H. -J. Song, H. S. Shin, H. -B. Lee, J. -H. Yoon. and J. -K. Byun, "Induced Current Calculation in Detailed 3D Adult and Child Model for the Wireless Power Transfer Frequency Range", to be published in IEEE Transactions on Magnetics.
14 E. Waffenschmidt, "Wireless Power for Mobile Devices, Telecommunications Energy Conference (INTELEC), IEEE 33rd International, 2011.