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J Electromagn Eng Sci > Volume 15(3); 2015 > Article
Journal of Electromagnetic Engineering and Science 2015;15(3):129-133.
DOI: https://doi.org/10.5515/JKIEES.2015.15.3.129   
Dosimetry for Resonance-Based Wireless Power Transfer Charging of Electric Vehicles
Sang-Wook Park
EMI/EMC R&D Center, Korea Automotive Technology Institute
Abstract
This paper presents the dosimetry of a resonance-based wireless power transfer (RBWPT) system for electric vehicles applications. The compact RBWPT system is designed to transfer power at 150-mm distance. The electric and magnetic fields generated by the RBWPT system and the specific absorption rate in the human body model, which stands around the system, are calculated. These analyses are conducted in two cases: the alignment and the misalignment between the transmitter and the receiver. The matching loops are adjusted to maximize the power transfer efficiency of the RBWPT system for the misalignment condition. When the two cases were compared for the best power transfer efficiency, the specific absorption rates (SAR) in the misalignment case were larger than those in the alignment case. The dosimetric results are discussed in relation to the international safety guidelines.
Key words: Dosimetry, Electric Vehicles, FDTD, Wireless Power Transfer

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