JOURNAL BROWSE
Search
Advanced SearchSearch Tips
A Method to Compensate the Distorted Space Vectors in the Unbalanced Neutral Point Voltage of 3-level NPC PWM Inverters
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
  • Journal title : Journal of Power Electronics
  • Volume 16, Issue 2,  2016, pp.455-463
  • Publisher : The Korean Institute of Power Electronics
  • DOI : 10.6113/JPE.2016.16.2.455
 Title & Authors
A Method to Compensate the Distorted Space Vectors in the Unbalanced Neutral Point Voltage of 3-level NPC PWM Inverters
Hyun, Seung-Wook; Hong, Seok-Jin; Lee, Jung-Hyo; Lee, Chun-Bok; Won, Chung-Yuen;
  PDF(new window)
 Abstract
This paper proposes a compensation method to improve the distorted space vectors when a 3-level Neutral Point Clamped (NPC) inverter has an unbalanced neutral point voltage. Since both the neutral point voltage of the DC link and the space vector of a 3-level NPC inverter are closely related depending on the output load connecting state, a distorted space vector can occur when the neutral point voltage of a 3-level NPC inverter is unbalanced. The proposed method can improve the distorted space vectors by adjusting the injection time of the small and medium vectors and by modulating the amplitude of the carrier waveforms. In this paper, the proposed method is verified by both simulation and experimental results based on a 3-level NPC inverter.
 Keywords
Neutral point voltage;NPC inverter;Space vector;Unbalance;
 Language
English
 Cited by
 References
1.
K. Ma and F. Blaabjerg, “Modulation methods for neutral-point-clamped wind power converter achieving loss and thermal redistribution under low-voltage ride-through,” IEEE Trans. Ind. Electron., Vol. 61, No. 2, pp. 835-845, Feb. 2014. crossref(new window)

2.
S. Daher, J. Schmid, and F. L. M. Antunes, “Multilevel inverter topologies for stand-alone PV systems,” IEEE Trans. Ind. Electron., Vol. 55, No. 7, pp. 2703–2712, Jul. 2008. crossref(new window)

3.
J. Rodriguez, S. Bernet, W. Bin, J. O. Pontt, and S. Kouro, “Multi-level voltage-source-converter topologies for industrial medium-voltage drives,” IEEE Trans. Ind. Electron., Vol. 54, No. 6, pp. 2930-2945, Dec. 2007. crossref(new window)

4.
T. A. Meynard, H. Foch, P. Thomas, J. Courault, R. Jakob, and M. Nahrstaedt, “Multicell converters: basic concepts and industry applications,” IEEE Trans. Ind. Electron., Vol. 49, No. 5, pp. 955-964, Oct. 2002. crossref(new window)

5.
M. N. Slepchenkov, K. Smedley, and J. Wen, “Hexagram-converter-based STATCOM for voltage support in fixed-speed wind turbine generation systems,” IEEE Trans. Ind. Electron., Vol. 58, No. 4, pp. 1120-1131, Apr. 2011. crossref(new window)

6.
S. Ponnaluri, J. K. Steinke, P. Steimer, S. Reichert, and B. Buchmann, "Design comparison and control of medium voltage STATCOM with novel twin converter topology," in Proc. 2004 IEEE PESC Conference, pp. 2546-2552, Jun. 2004.

7.
J. A. Sayago, T. Bruckner, and S. Bernet, “How to select the system voltage of MV drive a comparison of semiconductor expenses,” IEEE Trans. Ind. Electron., Vol. 55, No. 9, pp. 3381-3390, Sep. 2008. crossref(new window)

8.
A. Nabae, I. Takahashi, and H. Akagi, “A new neutral-point-clamped PWM inverter,” IEEE Trans. Ind. Appl., Vol. IA-17, No. 5, pp. 518-523, Sep. 1981. crossref(new window)

9.
N. Celanovic and D. Boroyevich, “A comprehensive study of neutral-point-clamped voltage balancing problem in three-level neutral-point-clamped voltage source PWM inverters,” IEEE Trans. Power Electron., Vol. 15, No. 2, pp. 242-249, Mar. 2000. crossref(new window)

10.
N. Celanovic and D. Boroyevich, “A comprehensive study of neutral-point voltage balancing problem in three-level neutral-point-clamped voltage source PWM inverters,” IEEE Trans. Power Electron., Vol. 15, No. 2, pp. 242-249, Mar. 2000. crossref(new window)

11.
I. Pereira and A. Martins, "Multicarrier and space vector modulation for three-phase NPC converters: a comparative analysis," in 13th European Conference on Power Electronics and Applications, pp. 1-10, Sep. 2009.

12.
J. Holtz and N. Oikonomou, "Neutral point potential balancing algorithm at low modulation index for three-level inverter medium-voltage drives," in 40th IAS Annual Meeting Conference Record of the 2005 Industry Applications Conference, Vol. 2, pp. 1246-1252, Oct. 2005.

13.
J. Zaragoza, J. Pou, S. Ceballos, E. Robles, C. Jaen, and M. Corbalan, “Voltage-balance compensator for a carrier based modulation in the neutral point clamped converter,” IEEE Trans. Ind. Electron., Vol. 56, No. 2, pp. 305-314, Feb. 2009. crossref(new window)

14.
C. Wang and Y. Li, “Analysis and calculation of zero-sequence voltage considering neutral-point potential balancing in three-level NPC converters,” IEEE Trans. Ind. Electron., Vol. 57, No. 7, pp. 2262-2271, Jul. 2010. crossref(new window)

15.
G. Abad, M. A. Rodriguez, and J. Poza, “Three-level NPC converter based predictive direct power control of the doubly fed induction machine at low constant switching frequency,” IEEE Trans. Ind. Electron., Vol. 55, No. 12, pp. 4417-4429, Dec. 2008. crossref(new window)

16.
J. D. Barros and J. F. Silva, “Optimal predictive control of three-phase NPC multilevel converter for power quality applications,” IEEE Trans. Ind. Electron., Vol. 55, No. 10, pp. 3670-3681, Oct. 2008. crossref(new window)

17.
J. Pou, D. Boroyevich, and R. Pindado, “New feedforward space-vector PWM method to obtain balanced AC output voltages in a three-level neutralpointclamped converter,” IEEE Trans. Ind. Electron., Vol. 49, No. 5, pp. 1026-1034, Oct. 2002. crossref(new window)

18.
A. Lewicki, Z. Krzeminski, and H. Adu-Rub, “Space-vector pulsewidth modulation for three-level NPC converter with the neutral point voltage control,” IEEE Trans. Ind. Electron., Vol. 58, No. 11, pp. 5076-5086, Nov. 2011. crossref(new window)

19.
J. I. Leon, S. Vazquez, R. Portillo, L. G. Franquelo, J. M. Carrasco, P. W. Wheeler, and A. J. Watson, “Three dimensional feedforward space vector modulation applied to multilevel diode clamped converters,” IEEE Trans. Ind. Electron., Vol. 56, No. 1, pp. 101-109, Jan. 2009. crossref(new window)

20.
S. Brovanov and M. Pacas, "Space vector PWM technique for three-Level neutral point clamped converters with taking into account DC-voltage unbalance," in 2008 IEEE Region 8 international Conference on Computational Technologies in Electrical and Electronics Engineering, pp. 200-205, Jul. 2008.