상세정보
학술지
Induced Current Calculation in Detailed 3-D Adult and Child Model for the Wireless Power Transfer Frequency Range
- 저자
- 송해진, 신한수, 이향범, 윤재훈, 변진규
- 발행일
- 201402
- 출처
- IEEE Transactions on Magnetics, v.50 no.2, pp.1-4
- ISSN
- 0018-9464
- 출판사
- IEEE
- 협약과제
- 13PR2200, 100W이하 RF에너지 전송 및 재생기술개발, 조인귀
- 초록
- Induced current density in the human body is the basic restriction of the electromagnetic field protection guidelines for frequencies <10~MHz. Due to the difficulty of measurement, numerical methods are often used for assessment of basic restrictions. In this paper, induced current distributions are calculated in the high-resolution 3-D adult and child models exposed to magnetic fields between 100 kHz and 10 MHz, which is the frequency range of the resonant wireless power transfer (WPT) systems. For this frequency range, it is difficult to apply the conventional finite-difference time-domain (FDTD) method for bioelectric field computation. Thus, the quasi-static FDTD method is used to reduce the number of time steps. The results are analyzed according to different human models, grounding conditions, organs, frequencies, and orientations of the incident magnetic field. In addition, the plane wave exposure is compared with exposure to magnetic field of transmit coil of WPT system. Using the calculation results, the feasibility of the magnetic field reference level in the International Commission on Non-Ionizing Radiation Protection guideline is analyzed. © 2014 IEEE.
- KSP 제안 키워드
- Electromagnetic Field, Field computation, Finite-difference time-domain (fdtd) method, Frequency Range, High-resolution, Human body, Induced current density, International Commission on Non-Ionizing Radiation(ICNIRP), Ionizing radiation(IR), Magnetic field(MF), Numerical methods