Review of Safety and Exposure Limits of Electromagnetic Fields (EMF) in Wireless Electric Vehicle Charging (WEVC) Applications

2020 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 1328

Study snapshot

Publicationmanual · 2020

Study typereview

Reported directionUnclear

Evidence ratingInsufficient

Abstract

Review of Safety and Exposure Limits of Electromagnetic Fields (EMF) in Wireless Electric Vehicle Charging (WEVC) Applications Erdem Asa, Mostak Mohammad, Omer C. Onar, Jason Pries, Veda Galigekere, Gui-Jia Su. Review of Safety and Exposure Limits of Electromagnetic Fields (EMF) in Wireless Electric Vehicle Charging (WEVC) Applications. 2020 IEEE Transportation Electrification Conference & Expo (ITEC). 23-26 June 2020. doi: 10.1109/ITEC48692.2020.9161597. Abstract This study reviews the exposure limits and safety of intermediate frequency (IF) electromagnetic field (EMF) emissions for wireless electric vehicle charging (WEVC) applications. A review of the electromagnetic field exposure limits identified in international guidelines are presented. An overview of the electromagnetic field shielding technologies is provided including recommended geometries, materials, and performances of the methods available in the literature. Available laboratory results of EMF emissions are summarized considering several wireless power transfer studies in different power levels. Possible EMF reduction techniques are discussed with shielding practices and ORNL case studies. Also, living object detection (LOD) and foreign object detection (FOD) methods are reviewed from a safety aspect. Conclusions This study reviews and compiles the EMF emission limitations identified in international guidelines and standards including IEEE, ICNIRP, ACGIH, and SAE. EMF emissions can be substantial particularly at high-power transfer levels and misaligned conditions and should be reduced below the limits identified in the ICNIRP 2010 guidelines which are more conservative and thought to be safer. This study also provides a review of the shielding methods and presents two case studies from ORNL (Oak Ridge National Laboratory) experiences and practices on EMF shielding. EMF exposure levels and shielding methodologies for high-power and dynamic wireless power transfer applications should be analyzed in future studies with possible standards development activities. ieeexplore.ieee.org

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typereview

Effect directionunclear

PopulationNot supplied

Sample sizeNot supplied

ExposureIF

Evidence strengthInsufficientConfidence: 74% · Peer reviewed: unknown

Main findings

The review compiles international EMF exposure limits and summarizes available laboratory results for WEVC-related EMF emissions across different power levels. It states that EMF emissions can be substantial, particularly at high-power transfer levels and under misaligned conditions, and discusses shielding and other reduction techniques to keep emissions below guideline limits (notably ICNIRP 2010).

Outcomes measured

EMF exposure limits in international guidelines/standards (IEEE, ICNIRP, ACGIH, SAE)
Laboratory-measured EMF emissions from wireless power transfer studies at different power levels
Shielding technologies (geometries, materials, performance) and EMF reduction techniques
Safety-related methods: living object detection (LOD) and foreign object detection (FOD)

Limitations

Narrative review; no systematic methods described in the abstract
No specific frequencies, quantitative exposure levels, or effect sizes reported in the abstract
Focuses on emissions/limits and mitigation rather than direct health outcomes

View raw extracted JSON

{
  "study_type": "review",
  "exposure": {
    "band": "IF",
    "source": "wireless electric vehicle charging (WEVC) / wireless power transfer",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "EMF exposure limits in international guidelines/standards (IEEE, ICNIRP, ACGIH, SAE)",
    "Laboratory-measured EMF emissions from wireless power transfer studies at different power levels",
    "Shielding technologies (geometries, materials, performance) and EMF reduction techniques",
    "Safety-related methods: living object detection (LOD) and foreign object detection (FOD)"
  ],
  "main_findings": "The review compiles international EMF exposure limits and summarizes available laboratory results for WEVC-related EMF emissions across different power levels. It states that EMF emissions can be substantial, particularly at high-power transfer levels and under misaligned conditions, and discusses shielding and other reduction techniques to keep emissions below guideline limits (notably ICNIRP 2010).",
  "effect_direction": "unclear",
  "limitations": [
    "Narrative review; no systematic methods described in the abstract",
    "No specific frequencies, quantitative exposure levels, or effect sizes reported in the abstract",
    "Focuses on emissions/limits and mitigation rather than direct health outcomes"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "unknown",
  "keywords": [
    "intermediate frequency",
    "EMF",
    "wireless electric vehicle charging",
    "wireless power transfer",
    "exposure limits",
    "ICNIRP 2010",
    "IEEE",
    "ACGIH",
    "SAE",
    "shielding",
    "misalignment",
    "ORNL",
    "living object detection",
    "foreign object detection"
  ],
  "suggested_hubs": [
    {
      "slug": "who-icnirp",
      "weight": 0.86,
      "reason": "Discusses ICNIRP 2010 exposure limits and compares international guideline limits."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1109/itec48692.2020.9161597
PubMed: Not supplied

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