Modeling and Analysis of Cascade Multilevel PWM Rectifier Using Circuit DQ Transformation

  • Park, Nam-Sup (Department of Electrical Engineering, Yosu National University)
  • Published : 2003.09.01

Abstract

This paper presents a cascade multilevel PWM rectifier without the isolation transformers for energy build-up at each inverter modules. The features and advantages of the proposed PWM rectifier can be summarized as follows; I) It realizes the high power high voltage AC/DC power conversion, 2) It uses no transformer which is bulky and heavy, 3) It has hybrid structure so that switching devices can be effectively utilized, 4) It produces high quality AC current even in high power high voltage applications, 5) The input power factor remains unity by simple modulation index control. The multilevel rectifier is analyzed by using the circuit DQ transformation whereby the characteristics and control equations are obtained. Finally, it will be shown that the system simulation reveals the validity of analyses.

Keywords

Circuit DQ Transformation;Multilevel Inverter;PWM Rectifier;Unity Power Factor

References

  1. N. S. Choi, Jung G Cho and Gyu H. Cho, 'A general circuit topology of multilevel inverter', IEEE PESC Record pp. 96-103, 1991
  2. Frank Schettler, 'Device for Increasing the Power Yield of the Fundamental Component of a SelfCommutated Power Inverter', United States Patent, Patent Number 5673189,1997
  3. N. S. Choi, Cuk C. Cho and Gyu H. Cho, 'Modelling and analysis of multilevel voltage source inverter applied as a static var compensator', International Journal of Electronics, Vol. 75, No. 5, pp. 1015-1034, 1993 https://doi.org/10.1080/00207219308907179
  4. J. W. Dixon, A. B. Kulkarni, M. Nishimoto and B.T. Ooi, 'Characteristic of a controlled-current PWM rectifier-inverter link', IEEE trans. on Industry Applications, Vol. 23, No.1, pp. 78-84,1987 https://doi.org/10.1109/TIA.1987.4504869
  5. M. D. Manjrekar, P. Steimer and T. A. Lipo, 'Hybrid Multilevel Power Conversion System: a Competitive Solution fot High Power Applications', IEEE lAS Annual Meeting Conference Records, pp. 1520-1527, 1999
  6. F. Z. Peng, J.-S. Lai, J. W. McKeever and J. Van Coevering, 'A Multilevel Voltage -Source Inverter with Separate DC Sources for Static Var Generation', IEEE trans. on Industry Applications, Vol. 32, No. 5, pp. 1136-1138,1996
  7. C. T. Rim, N. S. Choi, G. C. Cho and G. H. Cho, 'A Complete DC and AC Analysis of Three-Phase Controlled-Current PWM Rectifier Using Circuit D. Q Transformation', IEEE trans. on Power Electronics, Vol. 9, No.4, 1994