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Analysis on the RFI Noise Path of Electrical Railway System in the Frequency Range of 9 kHz to 150 kHz

전기철도 시스템의 9~150 kHz 대역에서의 RFI 노이즈 전달 경로 분석

  • Kwun, Suk-Tai (Department of Electronic & Computer Engineering, Seokyeong University) ;
  • Chung, Yeon-Choon (Department of Electronic & Computer Engineering, Seokyeong University)
  • 권석태 (서경대학교 전자컴퓨터공학부) ;
  • 정연춘 (서경대학교 전자컴퓨터공학부)
  • Received : 2012.10.30
  • Accepted : 2012.11.27
  • Published : 2012.12.31

Abstract

The interaction of magnetic field in the frequency range of 9~150 kHz radiating from a railway system with wireless systems has been the cause of radio frequency interference. In this paper, the equivalent circuit model of the RFI noise is proposed through source and transfer path analysis, and it is confirmed that the switching noise of several kHz that occurs a vehicle traction drive system and a substation is radiated by forming the loop circuit with a feeder line by a rolling stock. And the validity of the proposed equivalent circuit model is verified by analyzing the effects of RC banks installed in the real railway between Guri and Guksu stations, the RFI noise can be effectively mitigated by loading suitable capacitance between rail and feeding line.

Keywords

Railway;RFI;Magnetic Field;RC Bank;Equivalent Circuit

References

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Cited by

  1. RFI Noise Reduction of the Electric Train in the Frequency Range of 9 kHz to 150 kHz vol.63, pp.1, 2014, https://doi.org/10.5370/KIEE.2014.63.1.179
  2. Study on the RFI Noise Reduction of the Electric Railway in the Frequency Range of 9 kHz to 150 kHz vol.62, pp.9, 2013, https://doi.org/10.5370/KIEE.2013.62.9.1329