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Evaluation of Electromagnetic Fields in Human Body Exposed to Wireless Inductive Charging System

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4 Author(s)
Ping-Ping Ding ; Lab. de Genie Electr. de Paris, Univ. of Paris-Sud, Gif-sur-Yvette, France ; Bernard, L. ; Pichon, L. ; Razek, A.

This paper presents an evaluation of the EMFs in the human body exposed to the wireless inductive charging system of electric vehicles such that the compliance of this charging system with respect to human EM exposure limits can be examined. A magnetic resonance imaging-derived and high-resolution model of the human body is used. An exposure assessment of a representative wireless inductive charging system, under a limited set of operating conditions, is provided to estimate the induced EMFs. The numerical analysis is performed with the finite element method. Numerical modeling of the system next to a standing human model shows that the EM exposure limits can be absolutely satisfied even when the transmitter coil is very close to the body. Furthermore, the worst configuration for the exposure evaluation of the wireless charging system is taken into consideration. This paper provides a useful guideline for the industry to develop inductive charging systems following the safety standards of radiation protection.

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Magnetics, IEEE Transactions on  (Volume:50 ,  Issue: 2 )