Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
권호 표지
DOI QR코드

DOI QR Code

Novel extensible multilevel inverter based on switched-capacitor structure

  • Wang, Yaoqiang (School of Electrical Engineering, Zhengzhou University) ;
  • Ye, Juncheng (School of Electrical Engineering, Zhengzhou University) ;
  • Ku, Ruohan (School of Electrical Engineering, Zhengzhou University) ;
  • Wang, Yi (School of Electrical Engineering, Zhengzhou University) ;
  • Liang, Jun (School of Electrical Engineering, Zhengzhou University)
  • Received : 2021.12.30
  • Accepted : 2022.04.17
  • Published : 2022.09.20
⟨ Previous Next ⟩

Abstract

Multilevel inverters (MLIs) play an important role in research on renewable energy conversion. However, in traditional designs, the high-voltage stress of switching devices and the large number of switches limit the wide application of the inverter. To ameliorate these problems, this paper proposes a switched-capacitor multilevel inverter (SCMLI). When compared with traditional MLIs, the proposed SCMLI utilizes a switched-capacitor structure, where the capacitors can achieve voltage self-balancing without auxiliary methods. Thus, it permits changes of the positive and negative polarity of the output level without the need for an H-bridge. In addition, with the augment of the level in the expanded SCMLI structure, the maximum blocking voltage can be kept constant. To show the advantages of the proposed structure, an extensible single dc source five-level SCMLI prototype has been built. Through a comparative analysis with different topologies, this paper also presents the advantages of the proposed topology in terms of the output voltage gain, number of output levels, and voltage stress. Finally, the correctness and feasibility of the proposed inverter are validated by extensive experiments.

Keywords

Acknowledgement

This work was supported in part by the National Natural Science Foundation of China under Grant 51507155, in part by the Youth Key Teacher Project of Henan Universities under Grant 2019GGJS011, in part by the Scientific and Technological Research Project of Henan Province under Grant 222102520001, and in part by the Postgraduate Education Reform and Quality Improvement Project of Henan Province under Grant YJS2021JD02. On behalf of all authors, the corresponding author states that there is no conflict of interest.

References

  1. Salem, A., Van Khang, H., Robbersmyr, K.G., Norambuena, M., Rodriguez, J.: Voltage source multilevel inverters with reduced device count: topological review and novel comparative factors. IEEE Trans. Power Electron. 36(3), 2720-2747 (2021) https://doi.org/10.1109/TPEL.2020.3011908
  2. Roy, T., Bhattacharjee, B., Sadhu, P.K., Dasgupta, A., Mohapatra, S.: Step-up switched capacitor multilevel inverter with a cascaded structure in asymmetric DC source configuration. J. Power Electron. 18(4), 1051-1066 (2018)
  3. Malinowski, M., Gopakumar, K., Rodriguez, J., Perez, M.A.: A survey on cascaded multilevel inverters. IEEE Trans. Ind. Electron. 57(7), 2197-2206 (2010) https://doi.org/10.1109/TIE.2009.2030767
  4. Siddique, M.D., Mekhilef, S., Shah, N.M., Ali, J.S.M.: New switched-capacitor-based boost inverter topology with reduced switch count. J. Power Electron. 20(4), 926-937 (2020) https://doi.org/10.1007/s43236-020-00102-x
  5. Guo, F., Yang, T., Li, C., Bozhko, S., Wheeler, P.: Active modulation strategy for capacitor voltage balancing of three-level neutralpoint- clamped converters in high-speed drives. IEEE Trans. Ind. Electron. 69(3), 2276-2287 (2022) https://doi.org/10.1109/TIE.2021.3065605
  6. Liu, X., Lv, J., Gao, C., Chen, Z., Guo, Y., Gao, Z., Tai, B.: A novel diode-clamped modular multilevel converter with simplified capacitor voltage-balancing control. IEEE Trans. Ind. Electron. 64(11), 8843-8854 (2017) https://doi.org/10.1109/TIE.2017.2682013
  7. Xiong, J., Zhou, F., Li, Q.: Soft-switching modulation algorithmbased reconfiguration of cascaded H-bridge inverters under DC source failures. J. Power Electron. 21(7), 998-1008 (2021) https://doi.org/10.1007/s43236-021-00251-7
  8. Memon, M.A., Siddique, M.D., Mekhilef, S., Mubin, M.: Asynchronous particle swarm optimization-genetic algorithm (APSOGA) based selective harmonic elimination in a cascaded H-bridge multilevel inverter. IEEE Trans. Ind. Electron. 69(2), 1477-1487 (2022) https://doi.org/10.1109/TIE.2021.3060645
  9. Siddique, M.D., Reddy, B.P., Iqbal, A., Mekhilef, S.: Reduced switch count-based N-level boost inverter topology for higher voltage gain. IET Power Electron. 13(15), 3505-3509 (2020) https://doi.org/10.1049/iet-pel.2020.0359
  10. Siddique, M.D., Mekhilef, S., Shah, N.M., Ali, J.S.M., Seyedmahmoudian, M., Horan, B., Stojcevski, A.: Switched-capacitorbased boost multilevel inverter topology with higher voltage gain. IET Power Electron. 13(14), 3209-3212 (2020) https://doi.org/10.1049/iet-pel.2020.0446
  11. Siddique, M.D., Ali, J.S.M., Mekhilef, S., Mustafa, A., Sandeep, N., Almakhles, D.: Reduced switch count based single source 7L boost inverter topology. IEEE Trans. Circuits Syst. II 67(12), 3252-3256 (2020)
  12. Lee, S.S., Bak, Y., Kim, S., Joseph, A., Lee, K.: New family of boost switched-capacitor seven-level inverters (BSC7LI). IEEE Trans. Power Electron. 34(11), 10471-10479 (2019) https://doi.org/10.1109/TPEL.2019.2896606
  13. Siddique, M.D., Mekhilef, S., Padmanaban, S., Memon, M.A., Kumar, C.: Single-phase step-up switched-capacitor-based multilevel inverter topology with SHEPWM. IEEE Trans. Ind. Appl. 57(3), 3107-3119 (2021) https://doi.org/10.1109/TIA.2020.3002182
  14. Zeng, J., Lin, W., Cen, D., Liu, J.: Novel K-Type multilevel inverter with reduced components and self-balance. IEEE Trans. Emerg. Sel. Topics Power Electron. 8(4), 4343-4354 (2020) https://doi.org/10.1109/JESTPE.2019.2939562
  15. Rahim, N.A., Chaniago, K., Selvaraj, J.: Single-phase seven-level grid-connected inverter for photovoltaic system. IEEE Trans. Ind. Electron. 58(6), 2435-2443 (2011) https://doi.org/10.1109/TIE.2010.2064278
  16. Jang, M., Ciobotaru, M., Agelidis, V.G.: A single-phase grid connectedfuel cell system based on a boost-inverter. IEEE Trans. Power Electron. 28(1), 279-288 (2013) https://doi.org/10.1109/TPEL.2012.2199770
  17. Peng, W., Ni, Q., Qiu, X., Ye, Y.: Seven-level inverter with selfbalanced switched-capacitor and its cascaded extension. IEEE Trans. Power Electron. 34(12), 11889-11896 (2019) https://doi.org/10.1109/TPEL.2019.2904754
  18. Taghvaie, A., Adabi, J., Rezanejad, M.: A self-balanced step-up multilevel inverter based on switched-capacitor structure. IEEE Trans. Power Electron. 33(1), 199-209 (2018) https://doi.org/10.1109/TPEL.2017.2669377
  19. Nguyen, M., Duong, T., Lim, Y., Kim, Y.: Switched-capacitor quasi-switched boost inverters. IEEE Trans. Ind. Electron. 65(6), 5105-5113 (2018) https://doi.org/10.1109/TIE.2017.2772179
  20. Ye, Y., Cheng, K.W.E., Liu, J., Ding, K.: A step-up switched-capacitor multilevel inverter with self-voltage balancing. IEEE Trans. Ind. Electron. 61(12), 6672-6680 (2014) https://doi.org/10.1109/TIE.2014.2314052
  21. Ngo, B., Nguyen, M., Kim, J., Zare, F.: Single-phase multilevel inverter based on switched-capacitor structure. IET Power Electron. 11(11), 1858-1865 (2018) https://doi.org/10.1049/iet-pel.2017.0857
  22. Khodaparast, A., Hassani, M.J., Azimi, E., Adabi, M.E., Adabi, J., Pouresmaeil, E.: Circuit configuration and modulation of a sevenlevel switched-capacitor inverter. IEEE Trans. Power Electron. 36(6), 7087-7096 (2021) https://doi.org/10.1109/TPEL.2020.3036351
  23. Roy, T., Sadhu, P.K., Dasgupta, A.: Cross-switched multilevel inverter using novel switched capacitor converters. IEEE Trans. Ind. Electron. 66(11), 8521-8532 (2019) https://doi.org/10.1109/TIE.2018.2889632
  24. Zamiri, E., Vosoughi, N., Hosseini, S.H., Barzegarkhoo, R., Sabahi, M.: A new cascaded switched-capacitor multilevel inverter based on improved series-parallel conversion with less number of components. IEEE Trans. Ind. Electron. 63(6), 3582-3594 (2016) https://doi.org/10.1109/TIE.2016.2529563
  25. Barzegarkhoo, R., Kojabadi, H.M., Zamiry, E., Vosoughi, N., Chang, L.: Generalized structure for a single phase switched-capacitor multilevel inverter using a new multiple DC link producer with reduced number of switches. IEEE Trans. Power Electron. 31(8), 5604-5617 (2016) https://doi.org/10.1109/TPEL.2015.2492555
  26. Wang, Y., Yuan, Y., Li, G., Ye, Y., Wang, K., Liang, J.: A T-type switched-capacitor multilevel inverter with low voltage stress and self-balancing. IEEE Trans. Circuits Syst. I 68(5), 2257-2270 (2021)