Journal of electromagnetic engineering and science

  • 제1권1호
  • /
  • Pages.100-104
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  • 2001
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  • 2671-7255(pISSN)
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  • 2671-7263(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
권호 표지

Development of Improved EMC Filter for EFT in Power Supply

  • Bae, Dae-Hwan (Dept. of electronics & Comm. Eng., Korea Maritime University) ;
  • Kim, Dong-Il (Dept. of Radio Sciences & Eng., Korea Maritime University) ;
  • Song, Jae-Man (RIIT, Korea Maritime University)
  • 발행 : 2001.05.01
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초록

Since the most of malfunctions in the industrial equipment controlled by processors is consist of the electrical fast transient (EFT)$^{[1],[2]}$TEX>, the International Electrotechnical Commission (IEC) prepared the dummy signal to test the immunity level of the equipments. To work out a countermeasure for the malfunction, We designed a new electromagnetic compatibility (EMC) filter for high power supply, which is consisted of a feed-through capacitor and ferrite materials with high permeability. The ferrite material is surrounded with a power cable or is inserted on the cable’s second layer in order to increase common-mode inductance. We have obtained a excellent insertion loss characteristics over the frequency band from 150 kHz to 30 MHz. The developed new EMC filter satisfy IEC 61000-4-4 and is suitable for industrial, militaly, and medical equipments with reduced malfuntions.

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참고문헌

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