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Abstrakty
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.
Rocznik
Tom
Strony
49--55
Opis fizyczny
bibliogr. 14 poz.
Twórcy
autor
- Gdańsk University of Technology, Poland, ul. G. Narutowicza 11/12, 80-952 Gadańsk
autor
- Gdańsk University of Technology, Poland, ul. G. Narutowicza 11/12, 80-952 Gadańsk
autor
- Gdańsk University of Technology, Poland, ul. G. Narutowicza 11/12, 80-952 Gadańsk
Bibliografia
- 1. Bech M.M., Blaabjerg F., Pedersen J.K.: Random modulation techniques with fixed switching frequency for three-phase power converters. IEEE Transactions on Power Electronics, 2000, 15, pp. 753-761.
- 2. Chrzan P.J., Haras A., Roye D.: Random and programmed moc/ulation schemes Jor p ower converters=microcontroller implementation, " Int. Conf. on Power Electronics, Motion Control PEMC'94 Warszawa, 1994, I, pp. 93-98.
- 3. Dixon R.c.: Spread Spectrum Systems. John Wiley & Sons 1976.
- 4. Dixon R.C.: Spread Spectrum Techniques. John Wiley & Sons 1976.
- 5. Habetler T., Divan D.: Acoustic Noise Reduction in Sinusoidal PWM Drives Using a Randomly Modulated Carrier. IEEE Transactions on Power Electronics, 1991, 6, 3, pp. 356--363.
- 6. Lin F., Chen D.: Reduction of Power Supply EMI Emission by Switching Frequency Modulation. IEEE Transactions on Power Electronics, 1994, 9, I, pp. 132-137.
- 7. Ramesh A.A., Mahesh G., Das K.: Importance of Receiver Dwell Time in Emission Measurements. Electromagnetic Compatibility Journal, 2000, 13, I & 2, pp. 33-35.
- 8. Ristau D., Hansen D.: Modulation Impact On Quasi-peak Detector Response. IEEE Int. Symp. on Electromagnetic Compatibility 1997.
- 9. Tse K., Shu-Hung Chung H., (Ron) Hui S., So H.: Analysis and Spectral Characteristics of a Spread - Spectrum Technique for Conducted EMI Suppression. IEEE Transactions on Power Electronics, 2000, 15, 2, pp. 399-410.
- 10. Tse K., Shu-Hung Chung H., (Ron) Hui S., So H.: A Comparative Investigation on the Use of Random Modulation Schemes for DC/DC Converters. IEEE Transactions on Industrial Electronics, 2000, 47, 2, pp. 253-263.
- 11. Tse K., Shu-Hung Chung H., (Ron) Hui S., So H.: A Comparative Study of Carrier-Frequency Modulation Techniques for Conducted EMI Suppr ess ion in PWM Converters. IEEE Trans. on Ind. Electronics, 2002, 49, 3, pp. 618-627.
- 12. Vilathgamuwa M., Deng J., Tseng K.J.: EMI suppression with switching frequency modulated dc-dc converters. IEEE Ind. Applications Magazine, 1999, 5, 6, pp. 27-33.
- 13. Wladziński W.: Influence of selected components of power electronic converter on conducted disturbances generation. (in polish) PhD thesis from the Gdansk University of Technology 2002.
- 14. CISPR 16-1 Specijications fr radio disturbance and immunity measuring apparatus and methods. Part I: Radio disturbance and immunity measuring apparatus. 1993.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BAT1-0017-0025