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

Gunbok Lee, Myung Yong Kim, Changmu Lee, Donguk Jang, Byung-Song Lee and Jae Hee Kim
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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

Energies, 2021, vol. 14, issue 4, 1-15

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.

Keywords: wireless power transfer; light rail; electromagnetic field; electromagnetic interference; radiated emission (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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