Measurement and Estimation of the Magnetic Fields in Electric Vehicles

2022 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 737

Study snapshot

Publicationmanual · 2022

Study typeexposure_assessment

Reported directionUnclear

Evidence ratingInsufficient

Abstract

Measurement and Estimation of the Magnetic Fields in Electric Vehicles M. Garvanova, I. Garvanov, V. Ivanov, D. Borissova. Measurement and Estimation of the Magnetic Fields in Electric Vehicles. 2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA), 2022, pp. 1-4, doi: 10.1109/SIELA54794.2022.9845773. Abstract To solve the problem of harmful emissions emitted by internal combustion vehicles such as carbon dioxide, nitrogen oxides, soot and others, the use of electric cars is proposed. These devices operate on electricity that induces “electromagnetic pollution” in or near them. The effects of electromagnetic fields on living organisms are undeniable, but it is not yet clear how harmful they are to humans. In electric car, passengers sit very close to an electrical system that operates at considerable power and for a long period of time. This means that consumers are exposed to artificial magnetic fields. Electric car manufacturers are very familiar with these problems and offer various technological solutions in their design and production. In the present article, experimental measurements of the magnetic fields generated by an electric car operating in different operating modes will be performed and recommendations for its proper operation will be given. Excerpts The levels of MF when driving in urban conditions are constantly changing in the range of about 100–200 nT. When starting and stopping, the levels are relatively high in the range of 170–230 nT. When the car is stopped at a traffic light, the level of the MF is in the range of 165–200 nT. When driving the electric car on the highway at speeds of 50, 80 and 100 km/h, MF levels of the order of 100– 300 nT are obtained. The measurement results are shown in Table 2 The obtained results show that in the passenger compartment of a car operating in different operating modes, the MF levels are normal. This is achieved thanks to the engineering solutions used in the production of the electric car. It is noteworthy that when accelerating and stopping the car, relatively high values of MF are observed, but this is for very short periods of time. More worrying is the fact of prolonged exposure and relatively high values of MF at high speeds of the electric car. The power, weight, acceleration and speed of the car affect the power of the MF generated in the car body. When charging the electric car, it is recommended that people are outside the car and as far away from it as possible. The three factors that have the strongest impact on human health are: high levels of electromagnetic fields, small distances between the generators of these fields and passengers, as well as relatively long exposure. ieeexplore.ieee.org

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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 typeexposure_assessment

Effect directionunclear

PopulationNot supplied

Sample sizeNot supplied

Exposuredifferent operating modes; mentions prolonged exposure at high speeds and short periods during acceleration/stopping

Evidence strengthInsufficientConfidence: 74% · Peer reviewed: unknown

Main findings

Experimental measurements in an electric car reported magnetic field (MF) levels typically around 100–200 nT in urban driving, 170–230 nT during starting/stopping, 165–200 nT when stopped at traffic lights, and about 100–300 nT on highways at 50/80/100 km/h. The authors state MF levels in the passenger compartment are "normal" across operating modes, with relatively higher values during acceleration/stopping for short periods, and note concern about prolonged exposure at high speeds; they recommend people stay outside and as far away as possible during charging.

Outcomes measured

magnetic field levels (nT) in passenger compartment under different driving/charging conditions

Limitations

No frequency characteristics of the measured magnetic fields reported in the provided text
No details provided on measurement instrumentation, locations within the vehicle, or protocol in the provided text
No sample size/number of vehicles or repeated measurements stated
Health outcomes were not measured; discussion of health impact is general

View raw extracted JSON

{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": null,
    "source": "electric vehicle",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "different operating modes; mentions prolonged exposure at high speeds and short periods during acceleration/stopping"
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "magnetic field levels (nT) in passenger compartment under different driving/charging conditions"
  ],
  "main_findings": "Experimental measurements in an electric car reported magnetic field (MF) levels typically around 100–200 nT in urban driving, 170–230 nT during starting/stopping, 165–200 nT when stopped at traffic lights, and about 100–300 nT on highways at 50/80/100 km/h. The authors state MF levels in the passenger compartment are \"normal\" across operating modes, with relatively higher values during acceleration/stopping for short periods, and note concern about prolonged exposure at high speeds; they recommend people stay outside and as far away as possible during charging.",
  "effect_direction": "unclear",
  "limitations": [
    "No frequency characteristics of the measured magnetic fields reported in the provided text",
    "No details provided on measurement instrumentation, locations within the vehicle, or protocol in the provided text",
    "No sample size/number of vehicles or repeated measurements stated",
    "Health outcomes were not measured; discussion of health impact is general"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "unknown",
  "keywords": [
    "electric vehicles",
    "magnetic fields",
    "passenger exposure",
    "urban driving",
    "highway driving",
    "charging",
    "nT"
  ],
  "suggested_hubs": [
    {
      "slug": "electric-vehicles",
      "weight": 0.95,
      "reason": "Study measures magnetic field levels inside an electric car across operating modes and provides operational recommendations."
    }
  ]
}

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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/siela54794.2022.9845773
PubMed: Not supplied

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