New modulation techniques for a leakage current reduction and a neutral-point voltage balance in transformerless photovoltaic systems using a three-level inverter

IEEE Transactions on Power Electronics

Volumn 29, Issue 4, 2014, Pages 1720-1732

  Lee, June Seok ^a   Lee, Kyo Beum ^a  

^a Ajou University   (South Korea)

Author keywords

Common mode voltage (CMV); leakage current; neutral point voltage balance; photovoltaic (PV) system; three level inverter

Indexed keywords

COMMON MODE VOLTAGE; LEAKAGE CURRENT REDUCTION; MODULATION TECHNIQUES; NEUTRAL-POINT VOLTAGE BALANCES; NEUTRAL-POINT VOLTAGES; PHOTOVOLTAIC SYSTEMS; THREE-LEVEL INVERTERS; TWO-LEVEL INVERTERS;

FREQUENCY MODULATION; PHOTOVOLTAIC CELLS; TOPOLOGY;

LEAKAGE CURRENTS;

EID: 84886453886     PISSN: 08858993     EISSN: None     Source Type: Journal    
DOI: 10.1109/TPEL.2013.2264954     Document Type: Article

References (28)

1. F. Blaabjerg, M. Liserre, and K. Ma, "Power electronics converters for wind turbine systems," IEEE Trans. Ind. Appl., vol. 48, no. 2, pp. 708-719, Mar./Apr. 2012.
2. M.Malinowski, K. Gopakumar, J. Rodriguez, andM. A. Ṕerez, "A survey on cascaded multilevel inverters," IEEE Trans. Ind. Electron., vol. 57, no. 7, pp. 2197-2206, Jul. 2010.
3. U. M. Choi, H. H. Lee, and K. B. Lee, "Simple neutral-point voltage control for three-level inverters using a discontinuous pulse width modulation," IEEE Trans. Energy Convers., vol. 28, no. 2, pp. 434-443, Jun. 2013.
4. U. M. Choi and K. B. Lee, "Neutral-point voltage balancing method for three-level inverter systems with a time-offset estimation scheme," J. Power Electron., vol. 13, no. 2, pp. 243-349, Mar. 2013.
5. U. M. Choi, H. G. Jeong, K. B. Lee, and F. Blaabjerg, "Method for detecting an open-switch fault in a grid-connected NPC inverter system," IEEE Trans. Power Electron., vol. 27, no. 6, pp. 2726-2739, Jun. 2012.
6. H. G. Jeong, K. B. Lee, S. W. Choi, and W. J. Choi, "Performance improvement of LCL-filter based grid connected-inverters using PQR power transformations," IEEE Trans. Power Electron., vol. 25, no. 5, pp. 1320-1330, May 2010.
7. K. B. Lee, J. H. Song, I. Choy, and J. Y. Yoo, "Torque ripple reduction in DTC of induction motor driven by three-level inverter with low switching frequency," IEEE Trans. Power Electron., vol. 17, no. 2, pp. 255-264, Mar. 2002. (Pubitemid 34307380)
8. J. Rodriguez, S. Bernet, P. K. Steimer, and I. E. Lizama, "A survey on neutral-point-clamped inverters," IEEE Trans. Ind. Electron., vol. 57, no. 7, pp. 2219-2230, Jul. 2010.
9. M. Schweizer and J. W. Kolar, "Design and implementation of a highly efficient three-level T-type converter for low-voltage applications," IEEE Trans. Power Electron., vol. 28, no. 2, pp. 899-907, Feb. 2012.
10. R. Gonźalez, J. Ĺopez, P. Sanchis, and L. Marroyo, "Transformerless inverter for single-phase photovoltaic systems," IEEE Trans. Power Electron., vol. 22, no. 2, pp. 693-697, Mar. 2007. (Pubitemid 46523195)
11. E. Koutroulis and F. Blaabjerg, "Design optimization of transformerless grid-connected PV inverters including reliability," IEEE Trans. Power Electron., vol. 28, no. 1, pp. 325-335, Jan. 2013.
12. L. Zhang, K. Sun, L. Feng, H.Wu, and Y. Xing, "A family of neutral point clamped full-bridge topologies for transformerless photovoltaic grid-tied inverters," IEEE Trans. Power Electron., vol. 28, no. 2, pp. 730-738, Feb. 2013.
13. Y. Gu,W. Li,Y. Zhao, B.Yang, C. Li, and X. He, "Transformerless inverter with virtual DC bus concept for cost-effective grid-connected PV power systems," IEEE Trans. Power Electron., vol. 28, no. 2, pp. 793-805, Feb. 2013.
14. T. Kerekes, R. Teodorescu, M. Liserre, C. Klumpner, and M. Sumner, "Evaluation of three-phase transformerless photovoltaic inverter topologies," IEEE Trans. Power Electron., vol. 24, no. 9, pp. 2202-2211, Sep. 2009.
15. M. L. Heldwein, H. Ertl, J. Biela, and J. W. Kolar, "Implementation of a transformerless common-mode active filter for offline converter systems," IEEE Trans. Ind. Electron., vol. 57, no. 5, pp. 1772-1786, May 2010.
16. D. Dong, F. Luo, D. Boroyevich, and P. Mattavelli, "Leakage current reduction in a single-phase bidirectional AC-DC full-bridge inverter," IEEE Trans. Power Electron., vol. 27, no. 10, pp. 4281-4291, Oct. 2012.
17. B. Yang, W. Li, Y. Gu, W. Cui, and X. He, "Improved transformerless inverter with common-mode leakage current elimination for a photovoltaic grid-connected power system," IEEE Trans. Power Electron., vol. 27, no. 2, pp. 752-762, Feb. 2013.
18. A. M. Hava and E. Ün, "A high-performance PWM algorithm for common-mode voltage reduction in three-phase voltage source inverters," IEEE Trans. Power Electron., vol. 26, no. 7, pp. 1998-2008, Jul. 2011.
19. J. W. Kimball and M. Zawodniok, "Reducing common-mode voltage in three-phase sine-triangle PWM with interleaved carriers," IEEE Trans. Power Electron., vol. 26, no. 8, pp. 2229-2236, Aug. 2011.
20. M. C. Cavalcanti, K. C. de Oliveira, A. M. de Farias, F. A. S. Neves, G. M. S. Azevedo, and F. C. Camboim, "Modulation techniques to eliminate leakage currents in transformerless three-phase photovoltaic systems," IEEE Trans. Ind. Electron., vol. 57, no. 4, pp. 1360-1368, Apr. 2010.
21. M. C. Cavalcanti, A. M. Farias, K. C. Oliveira, F. A. S. Neves, and J. L. Afonso, "Eliminating leakage currents in neutral point clamped inverters for photovoltaic system," IEEE Trans. Ind. Electron., vol. 59, no. 1, pp. 435-443, Jan. 2012.
22. J. H. Seo, C. H. Choi, and D. S. Hyun, "A new simplified space-vector PWM method for three-level inverters," IEEE Trans. Power Electron., vol. 16, no. 4, pp. 545-550, Jul. 2001. (Pubitemid 32651001)
23. H. J. Kim, H. D. Lee, and S. K. Sul, "A new PWM strategy for commonmode voltage reduction in neutral-point-clamped inverter-fed AC motor drives," IEEE Trans. Power Electron., vol. 37, no. 6, pp. 1840-1845, Nov./Dec. 2001.
24. J. Pou, R. Pindado, D. Boroyevich, and P. Rodŕ?guez, "Evaluation of the low-frequency neutral-point voltage oscillations in the three-level inverter," IEEE Trans. Ind. Electron., vol. 52, no. 6, pp. 1582-1588, Dec. 2005. (Pubitemid 41830028)
25. H. Zhang, S. J. Finney, A. Massoud, and B. W. Williams, "An SVM algorithm to balance the capacitor voltages of the three-level NPC active power filter," IEEE Trans. Power Electron., vol. 23, no. 6, pp. 2696-2702, Nov. 2008.
26. C. Wang and Y. Li, "Analysis and calculation of zero-sequence voltage considering neutral-point potential balancing three-level NPC converters," IEEE Trans. Ind. Electron., vol. 57, no. 7, pp. 2262-2271, Jul. 2010.
27. J. Pou, J. Zaragoza, S. Ceballos, M. Saeedifard, and D. Boroyevich, "A carrier-based PWM strategy with zero-sequence voltage injection for a three-level neutral-point-clamped converter," IEEE Trans. Power Electron., vol. 27, no. 2, pp. 642-651, Feb. 2012.
28. J. Zaragoza, J. Pou, S. Ceballos, E. Robles, P. Ib́añez, and J. L. Villate, "A comprehensive study of a hybrid modulation technique for the neutralpoint-clamped converter," IEEE Trans. Ind. Electron., vol. 56, no. 2, pp. 294-304, Feb. 2009.