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Assessing Human Exposure With Medical Implants to Electromagnetic Fields From a Wireless Power Transmission System in an Electric Vehicle

Title
Assessing Human Exposure With Medical Implants to Electromagnetic Fields From a Wireless Power Transmission System in an Electric Vehicle
Author
유형석
Keywords
Dosimetry; human body model; international guidelines; metallic implants; wireless power transfer (WPT)
Issue Date
2020-04
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, v. 62, no. 2, page. 338-345
Abstract
Numerical dosimetry with regards to a resonance-based wireless power transfer (RBWPT) system for charging electric vehicles (EVs) has been conducted. The RBWPT system operating at 13.56 MHz frequency with a transferred power of 5.3 kW is placed below the center of the vehicle body. Specific absorption rate (SAR) in anatomically-based human models Duke and Ella with and without a medical implant is evaluated using four exposure scenarios (i.e., Duke and Ella models sitting in the EV without an implant, the Ella model: With an InterStim neurostimulator implant, having a prosthetic hip implant, or having a cardiac pacemaker implant). The results indicate that change in radio frequency (RF) energy absorption occurs when conductive implants are placed in the near field of an RF source. Enhancement of the SAR close to the implants is predicted. The peak averaged SAR over 10 g of tissues exceeds the standard limiting value posed by international guidelines except for the leadless pacemaker, which is in compliance with the prescribed limits. However, the temperature increase never exceeds the localized temperature rise limit of 2 degrees C. Compliance with the recommended limits of SAR in the worst-case exposure scenario is likely to limit the transferred power.
URI
https://ieeexplore.ieee.org/document/8678704https://repository.hanyang.ac.kr/handle/20.500.11754/166047
ISSN
018-9375; 1558-187X
DOI
10.1109/TEMC.2019.2903844
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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