14MR2600, A Study on Health Effects and Protection of EMF,
Kwon Jong Hwa
Abstract
Wireless power transfer (WPT) systems have been increasingly employed in modern electric vehicles and electronic devices [1]. Leakage magnetic fields from the WPT systems are an important design issue for mitigating electromagnetic field (EMF) hazard to human body [2]. In many cases of electric vehicles and electronic devices, inductive coils of the WPT systems are typically placed near metallic plates such as vehicles bodies or batteries of mobile devices. The metal plate is helpful for shielding efficiency, but it deteriorates the magnetic coupling between the coils due to eddy current cancellation. To enhance the magnetic coupling, a ferrite plate or sheet is typically employed and located between the coil and the metal plate. A metal strip structure instead of the solid plate is also considered to reduce the eddy current on the metal surface.
KSP Keywords
Air-gap, Current Cancellation, Eddy Current, Electromagnetic Field, Human body, Inductive coils, Leakage magnetic, Magnetic coupling, Magnetic field(MF), Metal Plate, Mobile devices
Copyright Policy
ETRI KSP Copyright Policy
The materials provided on this website are subject to copyrights owned by ETRI and protected by the Copyright Act. Any reproduction, modification, or distribution, in whole or in part, requires the prior explicit approval of ETRI. However, under Article 24.2 of the Copyright Act, the materials may be freely used provided the user complies with the following terms:
The materials to be used must have attached a Korea Open Government License (KOGL) Type 4 symbol, which is similar to CC-BY-NC-ND (Creative Commons Attribution Non-Commercial No Derivatives License). Users are free to use the materials only for non-commercial purposes, provided that original works are properly cited and that no alterations, modifications, or changes to such works is made. This website may contain materials for which ETRI does not hold full copyright or for which ETRI shares copyright in conjunction with other third parties. Without explicit permission, any use of such materials without KOGL indication is strictly prohibited and will constitute an infringement of the copyright of ETRI or of the relevant copyright holders.
J. Kim et. al, "Trends in Lightweight Kernel for Many core Based High-Performance Computing", Electronics and Telecommunications Trends. Vol. 32, No. 4, 2017, KOGL Type 4: Source Indication + Commercial Use Prohibition + Change Prohibition
J. Sim et.al, “the Fourth Industrial Revolution and ICT – IDX Strategy for leading the Fourth Industrial Revolution”, ETRI Insight, 2017, KOGL Type 4: Source Indication + Commercial Use Prohibition + Change Prohibition
If you have any questions or concerns about these terms of use, or if you would like to request permission to use any material on this website, please feel free to contact us
KOGL Type 4:(Source Indication + Commercial Use Prohibition+Change Prohibition)
Contact ETRI, Research Information Service Section
Privacy Policy
ETRI KSP Privacy Policy
ETRI does not collect personal information from external users who access our Knowledge Sharing Platform (KSP). Unathorized automated collection of researcher information from our platform without ETRI's consent is strictly prohibited.
[Researcher Information Disclosure] ETRI publicly shares specific researcher information related to research outcomes, including the researcher's name, department, work email, and work phone number.
※ ETRI does not share employee photographs with external users without the explicit consent of the researcher. If a researcher provides consent, their photograph may be displayed on the KSP.