Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Research on simplified SVPWM strategy for nine-switch converter

  • Guo, Jia (School of Electrical Engineering, Hebei University of Science and Technology)
  • Received : 2020.03.07
  • Accepted : 2020.07.23
  • Published : 2020.11.20
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Abstract

Nine-switch converter has promising application prospects in fields where cost, volume and power density are required. The performance of the converter depends to a large extent on the modulation strategy. The existing SVPWM strategy for nine-switch converter requires a lengthy zero-vectors table to make over-modulation judgment, which increased the complexity of the algorithm and the runtime of the program. To improve performance, a novel simplified SVPWM strategy for nine-switch converter is proposed in this paper. The zero-vectors table is replaced by a set of simple formulas for over-modulation judgment and processing. This simplification is based on derivation of the implied reference signals of the SVPWM strategy. The correctness of the proposed algorithm is verified through simulation and experimental results. It is also demonstrated that the proposed simplified algorithm can achieve the same output results as the traditional method with less code length and runtime.

Keywords

References

  1. Blaabjerg, F., Freysson, S., Hansen, H.H., Hansen, S.: A new optimized space vector modulation strategy for a component minimized voltage source inverter. IEEE Trans. Power Electron. 12(4), 704-714 (1997) https://doi.org/10.1109/63.602566
  2. Ledezma, E., Mcgrath, B., Munoz, A., Lipo, T.A.: Dual AC-drive system with a reduced switch count. IEEE Trans. Ind. Appl. 37(5), 1325-1333 (2001) https://doi.org/10.1109/28.952508
  3. Jones, M., Vukosavic, S.N., Dujic, D., Levi, E., Wright, P.: Fiveleg inverter PWM technique for reduced switch count two-motor constant power applications. IET Electric Power Appl. 2(5), 275-287 (2008) https://doi.org/10.1049/iet-epa:20070497
  4. Kominami, T., Fujimoto, Y.: A novel nine-switch inverter for independent control of two three-phase loads. In: 2007 IEEE Industry applications annual meeting, pp 2346-2350 (2007)
  5. Liu, C., Wu, B., Zargari, N.R., Xu, D., Wang, J.: A novel three-phase three-leg AC/AC converter using nine IGBTs. IEEE Trans. Power Electron. 24(5), 1151-1160 (2009) https://doi.org/10.1109/TPEL.2008.2004038
  6. Liu, C., Wu, B., Zargari, N. R., Xu, D.: A novel nine-switch PWM rectifer-inverter topology for three-phase UPS applications. In: 2007 European conference on power electronics and applications, pp 1-10 (2009)
  7. Zhang, L., Loh, P.C., Gao, F.: An integrated nine-switch power conditioner for power quality enhancement and voltage sag mitigation. IEEE Trans. Power Electron. 27(3), 1177-1190 (2012) https://doi.org/10.1109/TPEL.2011.2115256
  8. Datta, S., Mishra, J.P., Roy, A.K.: Operation and control of a DFIG based grid connected WECS using NSC during grid fault and with unbalance non-linear load. Int. J. Ambient Energy 39(7), 732-742 (2018) https://doi.org/10.1080/01430750.2017.1345008
  9. Dehnavi, S.M.D., Mohamadian, M., Yazdian, A., Ashrafzadeh, F.: Space vectors modulation for nine-switch converters. IEEE Trans. Power Electron. 25(6), 1488-1496 (2010) https://doi.org/10.1109/TPEL.2009.2037001
  10. Dehghan, S.M., Amiri, A., Mohamadian, M., Andersen, M.A.E.: Modular space-vector pulse-width modulation for nine-switch converters. IET Power Electron. 6(3), 457-467 (2013) https://doi.org/10.1049/iet-pel.2012.0203
  11. Li, T., Zhang, X., Qiao, M.: Research on the macro-equivalence between SPWM and SVPWM. Proc. CSEE. 30(S1), 178-184 (2010)