Evaluation of Electromagnetic Exposure During 85 kHz Wireless Power Transfer for Electric Vehicles

Authors: SangWook Park

Year: Sep 1, 2017

Category: Electromagnetics

Journal: IEEE Transactions on Magnetics

DOI: 10.1109/TMAG.2017.2748498

URL: http://ieeexplore.ieee.org/document/8024022/

Abstract

Overview

The study focuses on the external electromagnetic fields produced by high-power wireless power transfer (WPT) systems used in electric vehicles (EVs). The proximity of these systems to human bodies warrants a detailed examination due to potential safety risks as identified by international guidelines.

Findings

  • A comprehensive dosimetric analysis of an 85 kHz WPT system designed for electric vehicles.
  • Various exposure scenarios were evaluated including different configurations of human proximity to the system, with and without shielding, alignment issues, and the presence of a metal plate mimicking a vehicle's floor pan.
  • Assessment of minimum safe distances and maximum allowable transmitting powers in accordance with international safety limits.

Conclusion

The study identifies critical guidelines for the safe implementation of WPT systems in EVs, advising strict adherence to safety limits to mitigate associated health risks from electromagnetic exposure.

electromagnetic fields wireless power transfer electric vehicles safety guidelines dosimetry
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