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Modular Multilevel Converter Based STATCOM Topology Suitable for Medium-Voltage Unbalanced Systems

  • Received : 2010.03.04
  • Published : 2010.09.20

Abstract

This paper discusses a transformerless shunt static compensator (STATCOM) based on a modular multilevel converter (MMC). It introduces a new time-discrete appropriate current control algorithm and a phase-shifted carrier modulation strategy for fast compensation of the reactive power and harmonics, and also for the balancing of the three-phase source side currents. Analytical formulas are derived to demonstrate the accurate mechanism of the stored energy balancing inside the MMC. Various simulated waveforms verify that the MMC based STATCOM is capable of reactive power compensation, harmonic cancellation, and simultaneous load balancing, while controlling and balancing all of the DC mean voltages even during the transient states.

Keywords

References

  1. C. K. Lee, J.S K. Leung, S.Y R. Hui, H.S.H. Chung, "Circuit-level comparison of STATCOM technologies," IEEE Transactions on Power Electronics, Vol. 18, No. 4, pp. 1084-1092, Jul. 2003. https://doi.org/10.1109/TPEL.2003.813771
  2. Fang Z. Peng, John Wang, McKeever, Donald J. Adams, "A power line conditioner using cascade multilevel inverters for distribution systems," IEEE Transactions on Industrial Application, Vol. 34, No. 6, pp.1293-1298, Nov./Dec. 1998. https://doi.org/10.1109/28.739012
  3. Y. M. Park, H. S. Ryu, H. W. Lee, M. G. Jung, S. H. Lee, "Design of a cascaded H-Bridge multilevel inverter based on power electronics building blocks and control for high performance," Journal of Power Electronics, Vol. 10, No. 3, pp.262-269, Mar. 2010. https://doi.org/10.6113/JPE.2010.10.3.262
  4. H. I. Eini, S. Farhangi, J. L. Schanen, M. K. Fard, "A fault-tolerant control strategy for cascaded h-bridge multilevel rectifiers," Journal of Power Electronics, Vol. 10, No. 1, pp.34-42, Jan. 2010. https://doi.org/10.6113/JPE.2010.10.1.034
  5. G. K. Kasal, B. Singh, "H-bridge VSC with a t-connected transformer for a 3-phase 4-wire voltage and frequency controller of an isolated asynchronous generator," Journal of Power Electronics, Vol. 9, No. 1, pp.43-50, Jan. 2009.
  6. H. Akagi, S. Inoue, T. Yoshii, " Control and performance of a transformerless cascade PWM STATCOM with star configuration," IEEE Transactions on Industry Applications, Vol. 43 , No. 4, pp. 1041-1049, Jul./Aug. 2007. https://doi.org/10.1109/TIA.2007.900487
  7. Fang Z. Peng, Jin Wang, "A universal STATCOM with delta-connected cascade multilevel inverter," IEEE PESC'04, Jun. 2004.
  8. R.E. Betz, T. Summerst, T. Furney, "Using a cascaded h-bridge STATCOM for rebalancing unbalanced voltages," The 7th International Conference on Power Electronics, 2007.
  9. R. E. Betz, T. Summers, and T. Furney. "Symmetry compensation using a H-bridge multilevel STATCOM with zero sequence injection," IEEE Industry Applications Conference, Oct. 2006.
  10. R. Marquardt, A. Lesnicar, "New concept for high voltage – modular multilevel converter," Deutsch- Koreanisches Symposium, 2004.
  11. H. Mohammadi Pirouz, M. Tavakoli Bina, "New transformerless STATCOM topology for compensating unbalanced medium-voltage loads," EPE'09, Sep. 2009.
  12. Pee-Chin Tan, R.E. Morrison, D.G. Holmes, "Voltage form factor control and reactive power compensation in a 25-kV electrified railway system using a shunt active filter based on voltage detection," IEEE Transactions on Industry Applications, Vol. 39, No. 2, pp. 575-581, Mar./Apr. 2003. https://doi.org/10.1109/TIA.2003.809455
  13. R. Marquardt, "Stromrichters chaltungen mitverteilten energiespeichern," German Patent DE 10 103 031, Jan. 24, 2001.
  14. M. Hiller, D. Krug, R. Sommer, S. Rohner, "A new highly modular medium voltage converter topology for industrial drive applications," 13th European Conference on Power Electronics and Applications, 2009.
  15. M. Hagiwara, H. Akagi, "Control and experiment of pulsewidthmodulated modular multilevel converters," IEEE Transactions on Power Electronics, Vol. 24, No. 7, pp 1737-1746, Jul. 2009. https://doi.org/10.1109/TPEL.2009.2014236
  16. M. Tavakoli Bina, A.K.S Bhat, "Averaging technique for the modeling of STATCOM and active filters," IEEE Transactions on Power Electronics, Vol. 23, No. 2, pp. 723-734, Mar. 2008. https://doi.org/10.1109/TPEL.2007.915174
  17. Akagi, Watanabe, Aredes, "Instantaneous power theory and applications to power conditioning," The Institute of Electrical and Electronics Engineers Inc., 2007.
  18. R. Gupta, A. Ghosh, and A. Joshi, "Switching characterization of cascaded multilevel-inverter-controlled systems," IEEE Transactions on Industrial Electronics, ol. 55, no. 3, pp. 1047-1058, Mar. 2008. https://doi.org/10.1109/TIE.2007.896274
  19. S. Rohner, S. Bernet, M. Hiller, R. Sommer, "Modulation, losses and semiconductor requirements of modular multilevel converters," IEEE Transactions on Industrial Electronics, IEEE Early Access, 2009.
  20. L. A. Moran, J. W. Dixon, and R. R. Wallace, "A three-phase active power filter operating with fixed switching frequency for reactive power and current harmonic compensation," IEEE Trans. Ind. Electron., Vol. 42, No. 4, pp. 402-408, Aug. 1995. https://doi.org/10.1109/41.402480

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