access icon free Structure for double flying capacitor multicell converter; progressive double flying capacitor multicell converter

In this study, a novel developed structure of a converter based on double flying capacitor multi-cell named progressive double flying capacitor multicell (PDFCM) is proposed. The main advantage of this proposed structure compared with DFCM converter is generation of more output voltage levels while having the same number of devices. This novel converter's structure is based on integration of two extended cells between the conventional cells in DFCM converter. PDFCM converter has various structural states which are named based on the number of units, consisting of two extended cells and one conventional cell. These structural states are changing by the increase of levels depending on the number of cells. Thus, the progressive increase of the number of produced levels of proposed converter is because of the increase in the number of the units. In fact, by appropriate selection of the proposed converter states, the number of levels in output voltage will be higher than those of conventional converters. This converter can be controlled either by open-loop, self-balancing or closed-loop methods. In addition, the switching method is based on space vector modulation. The simulation and experimental results confirm the validity and effectiveness of the presented converter.

Inspec keywords: switching convertors; capacitors

Other keywords: self-balancing method; progressive double flying capacitor multicell converter; PDFCM converter; space vector modulation; closed-loop method; switching method; open-loop method

Subjects: Capacitors; Power electronics, supply and supervisory circuits

References

    1. 1)
      • 16. Meynard, T., Lienhardt, A.M., Gateau, G., Haederli, C., Barbosa, P.: ‘Flying capacitor multicell converters with reduced stored energy’. Proc of IEEE Int. Symp. Industrial Electronics., Canada, July 2006, pp. 914918.
    2. 2)
    3. 3)
    4. 4)
    5. 5)
    6. 6)
    7. 7)
      • 15. Rohner, S., Bernet, S., Hiller, M., Sommer, R.: ‘Modelling, simulation and analysis of a modular multilevel converter for medium voltage applications’. Proc. IEEE Int. Conf. on Industrial Technology (ICIT), 2010, pp. 775782.
    8. 8)
    9. 9)
    10. 10)
    11. 11)
    12. 12)
    13. 13)
      • 19. Hosseini, S.H., Sadigh, A.K., Sharifi, A.: ‘Estimation of flying capacitors voltages in multicell converters’. Proc. Sixth Int. ECTI Conf., Thailand, May 2009, vol. 1, pp. 110113.
    14. 14)
    15. 15)
    16. 16)
    17. 17)
      • 17. Martins, C.A., Roboam, X.: ‘Switching frequency imposition and ripple reduction in DTC drives by using a multilevel converter’, IEEE Trans. Power, 2002, 17, (2), pp. 775782.
    18. 18)
      • 7. Meynard, T., Foch, H.: ‘Multilevel choppers for high voltage applications’, EPE J., 1992, 2, (1), pp. 4550.
    19. 19)
http://iet.metastore.ingenta.com/content/journals/10.1049/iet-pel.2014.0199
Loading

Related content

content/journals/10.1049/iet-pel.2014.0199
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading