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Electromagnetic Field Tests of a 1-MW Wireless Power Transfer System for Light Rail Transit

Author

Listed:
  • Gunbok Lee

    (Smart Electrical & Signaling Division, Korea Railroad Research Institute (KRRI), Uiwang 16105, Korea)

  • Myung Yong Kim

    (Smart Electrical & Signaling Division, Korea Railroad Research Institute (KRRI), Uiwang 16105, Korea)

  • Changmu Lee

    (Smart Electrical & Signaling Division, Korea Railroad Research Institute (KRRI), Uiwang 16105, Korea)

  • Donguk Jang

    (Advanced Railroad Technology Planning Department, Korea Railroad Research Institute (KRRI), Uiwang 16105, Korea)

  • Byung-Song Lee

    (Smart Electrical & Signaling Division, Korea Railroad Research Institute (KRRI), Uiwang 16105, Korea)

  • Jae Hee Kim

    (School of Electrical, Electronics and Communication Engineering, Korea University of Technology and Education (KOREATECH), Cheonan 31253, Korea)

Abstract

The high-power wireless power transfer (WPT) system in railways does not require physical contact to transfer electrical power, is electrically safe, and reduces maintenance costs from wear and tear. However, a high-power system generates a strong magnetic field that can result in problems of electromagnetic field (EMF) exposure and electromagnetic interference (EMI). In this study, EMF and EMI were measured at various positions under in-motion environment conditions for a 1-MW WPT light rail transit system. The measured maximum EMF was 2.41 μT, which is lower than the international guideline of 6.25 μT for the various locations with a potential presence of passengers. The measured EMI also satisfied international standards in the frequency range of 150 kHz–1 GHz.

Suggested Citation

  • Gunbok Lee & Myung Yong Kim & Changmu Lee & Donguk Jang & Byung-Song Lee & Jae Hee Kim, 2021. "Electromagnetic Field Tests of a 1-MW Wireless Power Transfer System for Light Rail Transit," Energies, MDPI, vol. 14(4), pages 1-15, February.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:4:p:1171-:d:503819
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    Cited by:

    1. Yuyu Geng & Tao Wang & Shiyun Xie & Yi Yang, 2022. "Analysis and Design of Wireless Power Transfer Systems Applied to Electrical Vehicle Supercapacitor Charge Using Variable-Resistance-Based Method," Energies, MDPI, vol. 15(16), pages 1-15, August.

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