Conducted EMI mitigation in switched mode dc-dc converters by spread spectrum techniques

• Autorzy: Knitter A. , Łuszcz J. , Chrzan P. J.
• Języki publikacji: EN

Abstrakty

EN

In this paper effectiveness of spread spectrum modulation techniques to the electromagnetic interference (EMI) suppression is investigated. Comparative evaluation of spread spectrum methods is reviewed and demonstrated with the aid of function generator and EMI receiver. Obtained results indicate advantageous features of random carrier frequency modulation (CFM), which results in more steady spectral distribution. For a switch mode dc-dc converter, random and periodical sinusoidal CFM is systematically tested. Based on disturbance voltage measurements using Line Impedance Stabilization Network (LISN) and EMI receiver, conducted emission spectra are evaluated in function of the defined randomness index R and frequency range. For the acceptable range of R variations up the 20dB EMI suppression level was reached.

Słowa kluczowe

EN

spread spectrum; carrier frequency modulation; EMI suppression; electromagnetic compatibility

• Wydawca: AGH University of Science and Technology ; Lodz University of Technology
• Czasopismo: Electrical Power Quality and Utilisation. Journal
• Rocznik: 2005
• Tom: Vol. 11, nr 2
• Strony: 49--55
• Opis fizyczny: bibliogr. 14 poz.

Twórcy

autor

Knitter A.

• Gdańsk University of Technology, Poland, ul. G. Narutowicza 11/12, 80-952 Gadańsk

autor

Łuszcz J.

• Gdańsk University of Technology, Poland, ul. G. Narutowicza 11/12, 80-952 Gadańsk

autor

Chrzan P. J.

• Gdańsk University of Technology, Poland, ul. G. Narutowicza 11/12, 80-952 Gadańsk

Bibliografia

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