Electromagnetic fields in body by wireless inductive system

Abstract

Purpose -The purpose of this paper is to calculate the induced electromagnetic fields in human body exposed to the wireless inductive charging system of electric vehicles has been conducted based on the numerical simulation. Design/methodology/approach -A homogeneous human body model is built and a representative wireless inductive charging system is used for the exposure assessment. The numerical simulation relies on finite element method with formulations in terms of the magnetic vector potential. The electromagnetic fields in terms of magnetic flux density and electric field are computed in the human body and compared with the electromagnetic exposure limits. Findings -It has been found that the induced EMFs in the near-field exposure configuration greatly comply with the safety guidelines. Originality/value -This study could help the development of the wireless inductive charging system with meeting the safety standard of radiation protection.

High‐resolution magnetic‐field exposure simulations of automotive inductive power‐transfer systems using a scaled‐frequency finite difference time domain approach with multi‐GPU acceleration

“…The simulated scenario has some parallels to work from the groups of Shimamoto et al and Ding et al; however, the choice of the SF‐FDTD approach allows to use more realistic models of the IPT and its environment. The spatial high‐resolution capabilities of the proposed SF‐FDTD method require using massive parallel computing capabilities of GPGPU‐accelerated high‐performance computing systems.…”

Electromagnetic analysis and simulation aspects of wireless power transfer in the domain of inductive power transmission technology

“…To illustrate the human exposure, for example, in [81] it was shown that the field values deduced in the case of a homogeneous human body phantom placed near the realistic charging structure [39,40] respected the recommendations of the ICNIRP. This charging system is assumed to deliver 3 kW on a 400 V battery, which decides the distance between two coils.…”

Performance assessment of class-E inverter for capacitive power transfer system

“…The most popular WPT method, known as inductive power transfer (IPT), is based on magnetic induction. The IPT technique has achieved great success in theoretical development and industrial applications to deliver power in certain areas of applications such as powering consumer electronic devices (Hu et al , 2007), powering link for implantable medical devices (Ding et al , 2015; Hannan et al , 2014; Hannan et al , 2011), electric vehicle charging (Budhia et al , 2013) and wireless charger for robots (Park et al , 2014). However, it has some limitations.…”