Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Controller design and conducted noise reduction of FM-PWM 컨버터

FM-PWM 컨버터의 제어기 설계와 전도성 잡음 저감

  • Park, Seok-Ha (Dept. of Electrical Engineering, Chungnam National University) ;
  • Jin, In-Soo (Dept. of Electrical Engineering, Chungnam National University) ;
  • Kim, Jae-Hwan (Dept. of Electrical Engineering, Chungnam National University) ;
  • Kim, Yang-Mo (Dept. of Electrical Engineering, Chungnam National University)
  • 박석하 (충남대학교 전기공학과) ;
  • 진인수 (충남대학교 전기공학과) ;
  • 김재환 (충남대학교 전기공학과) ;
  • 김양모 (충남대학교 전기공학과)
  • Published : 1999.07.19
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Abstract

The conducted noises mainly emitted from PWM DC power supply have a periodicity with respect to switching frequency, and especially center at the switching frequency and the discrete harmonic frequencies. The concentration of noise energy at these discrete frequencies makes it harder to meet EMI regulations. To reduce the conducted noises, this paper presents the novel FM-PWM control method by using random switching frequency modulation control. This control makes it to generate the noises of side bands by shattering emission spectrum, and to reduce the peak level of conducted noises.

Keywords