Electromagnetic fields (EMF) in electric cars

Authors: Eberhard J, Fröhlich J, Zahner M

Year: 2023

Category: Electromagnetic Safety

Institution: Swiss Federal Office of Energy (SFOE)

URL: https://www.aramis.admin.ch/Default?DocumentID=70257&Load=true

Abstract

Overview

This study investigates the electromagnetic fields (EMF) generated by electric components in battery-powered electric vehicles. The focus is to determine if these fields, when measured under real operating conditions, pose a significant health risk to passengers.

Findings

  • All vehicles generate EMF emissions, the study analyzed both low-frequency and high-frequency fields.
  • Measurements were taken from five purely electric vehicles and one diesel motorised vehicle for comparison.
  • Results indicated that field strengths measured were usually well within ICNIRP limits, averaging up to 5% for low-frequency fields and roughly 10% for high-frequency EMF.
  • Peak readings occasionally reached about 50% of international limits but these were localized and sporadic.

Conclusion

While the electric drive components in the vehicles did not significantly contribute to EMF beyond safe limits, the inconsistency and potential peaks suggest a need for a closer examination and possible regulation changes, especially as digitisation in vehicles increases.

One pressing concern highlighted is the lack of specific EMF regulations for interior vehicle environments, indicating a significant oversight in passenger safety.

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