The Transactions of the Korean Institute of Electrical Engineers B (대한전기학회논문지:전기기기및에너지변환시스템부문B)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Sigma-Delta Modulator With Random Switching Periods

랜덤 스위칭 주기를 갖는 시그마 델타 변조기

  • Published : 2001.10.01
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Abstract

This paper proposed a random sigma-delta modulator(RSDM), which is constructed by a 1st order sigma-delta modulator(SDM) and a simple structured random binary generator(RBG). The 1st order SDM produces a switching pulse waveform which has the same low-frequency component as the reference input, while the RBG spreads the distribution of the number of sampling per switching cycle, and thus disperses the spectrum spikes in the output. The relationship between the harmonic spectra and the number of sampling per switching cycle is studied through computer simulations, and the frequency spectra of the RSDM are confirmed in an experimental setup.

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References

  1. T.G. Hbetler and D.M. Divan, 'Acoustic Noise Reduction in Sinusoidal PWM Drivers Using a Randomly Modulated Carrier', IEEE Trans. on Power Electronics, Vol.6, No.3, pp.356-363, 1991. 7. https://doi.org/10.1109/63.85902
  2. A.M. Trzynadlowski, F. Blaabjerg, J.K. Pedersen, R.L. Kirlin, and S. Legowski, 'Random Pulse Width Modulation Techniques for Converter-Fed Drive Systems-A Review,' IEEE Trans. on Industry Applications, Vol.30, No.5, pp.1166-1174, 1994. 9/10. https://doi.org/10.1109/28.315226
  3. K.Y. Cho, S.B. Yang, H.W. Kim, and J.C. Kim, 'Improving sound quality of reciprocating compressor using random PWM', PEVD Proceedings, pp.431-436, 2000. 9.
  4. Bin Huo, A.M. Trzynadlowski, I. Panah, A. Mohammed, and Zheny Yu, 'Novel Random Pulse Width Modulator with constant Sampling Frequency Based on the TMS320F240 DSP controller', IECON'99 Proceedings, Vol.1, pp.342-347, 1999 https://doi.org/10.1109/IECON.1999.822221
  5. C.M. Liaw, Y.M. Lin, C.H. Wu, and K.I. Hwu, Analysis, design, and implementation of a random frequency PWM inverter', IEEE Trans. on Power Electronics, Vol.5, pp.843-854, 2000. 9. https://doi.org/10.1109/63.867673
  6. Atsushi Hirota, Satoshi Nagai, and Mutsuo Nakaoka, 'A novel delta-sigma modulated DC-DC power converter operating under dc ripple voltage', IECON'99 Proceedings, Vol.1, pp.180-184, 1999 https://doi.org/10.1109/IECON.1999.822193
  7. P.M. Aziz, H.V. Sorensen, and Jan Van Der Spiegel, 'An Overview of sigma-Delta Converters', IEEE Signal Processing Magazine, pp.61-84, 1996. 1. https://doi.org/10.1109/79.482138
  8. Knuth and E. Donald,'The Art of computer Programming Volume 2 : Seminumerical Algorithms', Addison-Wesley Pub., 1973
  9. J.K. Pedersen and Frede Blaabjerg, Digital Quasi-Random Modulated SFAVM PWM in an AC-Drive System,' IEEE Trans. on Industrial Electronics, Vol.41, No.5, pp. 518-525, 1994.10. https://doi.org/10.1109/41.315270
  10. S.Y.R. Hui, I. Oppermann, and S. Sathiakumar, 'Microprocessor-Based Random PWM Schemes for DC-AC Power Conversion', IEEE Trans. on Power Electronics, Vol.12, No.2, pp.253-260, 1997. 3. https://doi.org/10.1109/63.558736