Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Efficiency and EMF Safety Analysis of Wireless Power Transfer System Using Standard Human Model

표준화된 인체모델을 이용한 공진형 무선전력전송 시스템의 효율 변화 및 인체 안전성 분석

  • Shin, Hansu (Department of Electrical Engineering, Soongsil University) ;
  • Byun, Jin-Kyu (Department of Electrical Engineering, Soongsil University)
  • 신한수 (숭실대학교 전기공학부) ;
  • 변진규 (숭실대학교 전기공학부)
  • Received : 2013.09.27
  • Accepted : 2013.10.22
  • Published : 2013.11.30
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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.

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  1. Analysis of Safety Distance and Maximum Permissible Power of Resonant Wireless Power Transfer Systems with Regard to Magnetic Field Exposure vol.20, pp.4, 2015, https://doi.org/10.4283/JMAG.2015.20.4.450