Study on the safety assessment and protection design of human exposure to low-frequency magnetic fields in electric vehicles

Authors: Tan L, Li G, Xie Q, Xiang Y, Luo B

Year: 2023 Oct 10

Category: Radiation Protection

Journal: Radiat Prot Dosimetry

DOI: 10.1093/rpd/ncad269

URL: https://pubmed.ncbi.nlm.nih.gov/37819666/

Abstract

Overview

As advancements in electric vehicle power performance continue, concerns about electromagnetic exposures within the cabin are increasing. This pivotal study focuses on testing and analyzing low-frequency magnetic field distribution inside an electric vehicle cabin.

Findings

  • A thorough simulation analysis was carried out to measure magnetic flux density, induced electric field strength, and induced current density.
  • The findings reveal that all test results are significantly lower than the limits specified by GB8702-2014 and the International Commission on Non-Ionizing Radiation Protection (ICNIRP).
  • The study highlights a relative error of less than 15% between simulated results and actual test findings.
  • Key factors such as frequency, driving current, vehicle body material, and cable layout significantly influence the electromagnetic field induced in the human body.

Conclusion

Despite meeting current safety standards, the minimal margin values in certain vehicle positions should be enhanced to ensure comprehensive protection against low-frequency magnetic field exposure. This research provides a crucial theoretical framework for designing protection against such exposures in human occupants of electric vehicles.

electromagnetic fields electric vehicles safety assessment low-frequency magnetic fields human exposure electromagnetic safety simulation analysis
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