Journal of Power Electronics

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

DOI QR Code

Novel cross-switch seven-level inverter with triple boost capability and self-balancing

  • Zhao, Jianxin (School of Electric Power Engineering, South China University of Technology) ;
  • Chen, Yuanrui (School of Electric Power Engineering, South China University of Technology) ;
  • Zeng, Jun (School of Electric Power Engineering, South China University of Technology) ;
  • Wang, Lintao (School of Electric Power Engineering, South China University of Technology) ;
  • Liu, Junfeng (School of Automation Science and Engineering, South China University of Technology)
  • Received : 2021.11.19
  • Accepted : 2022.04.12
  • Published : 2022.09.20
⟨ Previous Next ⟩

Abstract

A novel single-phase seven-level inverter using a cross-switch cell (CSC) is presented in this paper. Compared with conventional inverters, the proposed topology can generate seven-level output, triple boost gain with one dc source and a reduced number of switches. The CSC provides different charging paths for the capacitors to realize self-balance. Hence, the proposed inverter can realize self-balancing without additional control methods or sensors. Moreover, the proposed structure inherently generates negative output voltage levels without a back-end H-bridge circuit, which reduces the voltage stress on switches. This paper has fully illustrated the operation principles, and presents capacitance calculation and loss analysis. Afterward, a comparative study against recently proposed seven-level inverters is introduced, illustrating the merits of the proposed topology in terms of reduced switches, high voltage-boosting capacity, and self-balancing. Ultimately, a laboratory prototype is built for the validation of the proposed inverter.

Keywords

Acknowledgement

This work was supported in part by the National Natural Science Foundation of China under Grant 62173148 and Grant 51877085, in part by the Guangzhou Science&Technology Plan under Grant 202002030373, and in part by Guangdong Key Laboratory of Clean Energy Technology.

References

  1. Kouro, S., Malinowski, M., et al.: Recent advances and industrial applications of multilevel converters. IEEE Trans. Ind. Electron. 57(8), 2553-2580 (2010) https://doi.org/10.1109/TIE.2010.2049719
  2. Abu-Rub, H., Holtz, J., Rodriguez, J., Baoming, G.: Mediumvoltage multilevel converters-state of the art, challenges, and requirements in industrial applications. IEEE Trans. Ind. Electron. 57(8), 2581-2596 (2010) https://doi.org/10.1109/TIE.2010.2043039
  3. Rodriguez, J., et al.: Multilevel converters: an enabling technology for high-power applications. Proc. IEEE 97(11), 1786-1817 (2009) https://doi.org/10.1109/JPROC.2009.2030235
  4. Sun, K., Zhang, L., Xing, Y., Guerrero, J.M.: A distributed control strategy based on DC Bus signaling for modular photovoltaic generation systems with battery energy storage. IEEE Tran. Power Electron. 26(10), 3032-3045 (2011) https://doi.org/10.1109/TPEL.2011.2127488
  5. 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
  6. Choi, J.S., Kang, F.S.: Seven-level PWM inverter employing series-connected capacitors paralleled to a single DC voltage source". IEEE Trans. Ind. Electron. 62(6), 3448-3459 (2015)
  7. Chen, J., Wang, C.: "Topology and voltage-balance control of a single-phase double T-type seven-level inverter." IEEE J. Emerg. Sel. Topics Power Electron. 9(1), 1075-1087 (2021) https://doi.org/10.1109/JESTPE.2020.2968799
  8. Lee, S.S., Lim, C.S., Kyo-Beum, L.: Novel active-neutral-pointclamped inverters with improved voltage-boosting capability. IEEE Trans. Power Electron. 35(6), 5978-5986 (2020) https://doi.org/10.1109/TPEL.2019.2951382
  9. Lee, S.S., Lee, K.-B.: 'Dual-T-type seven-level boost active-neutral- point-clamped inverter.' IEEE Trans. Power Electron. 34(7), 6031-6035 (2019) https://doi.org/10.1109/TPEL.2019.2891248
  10. Zeng, J., Lin, W., Liu, J.: 'Switched-capacitor-based active-neutral- point-clamped seven-level inverter with natural balance and boost ability.' IEEE Access 7, 126889-126896 (2019) https://doi.org/10.1109/ACCESS.2019.2927351
  11. Alyami, S., Ali, J.S.M., Almakhles, D., Almutairi, A., Obeidat, M.: Seven level T-type switched capacitor inverter topology for PV applications. IEEE Access. 9, 85049-85059 (2021) https://doi.org/10.1109/ACCESS.2021.3084318
  12. Zeng, J., Wu, J., Liu, J., Guo, H.: A quasi-resonant switchedcapacitor multilevel inverter with self-voltage balancing for single-phase high-frequency AC microgrids. IEEE Trans. Ind. Informat. 13(5), 2669-2679 (2017) https://doi.org/10.1109/TII.2017.2672733
  13. Barzegarkhoo, R., Moradzadeh, M., Blaabjerg, F.: A new boost switched-capacitor multilevel converter with reduced circuit devices. IEEE Trans. Power Electron. 33(8), 6738-6754 (2018) https://doi.org/10.1109/TPEL.2017.2751419
  14. Chen, J., Wang, C., Li, J.: A single-phase step-up seven-level inverter with a simple implementation method for level-shifted modulation schemes. IEEE ACCESS. 7, 146552-146565 (2019) https://doi.org/10.1109/ACCESS.2019.2946238
  15. 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
  16. Sun, X., Wang, B., Zhou, Y., et al.: A single DC source cascaded seven-level inverter integrating switched-capacitor techniques. IEEE Trans. Ind. Electron. 63(11), 7184-7194 (2016) https://doi.org/10.1109/TIE.2016.2557317
  17. Siddique, M.D., Mekhilef, S., Shah, N.M., Ali, J.S.M., Blaabjerg, F.: A new switched capacitor 7L inverter with triple voltage gain and low voltage. IEEE Trans. Ind. Electron. 67(7), 1294-1298 (2020)
  18. Abhilash, T., Annamalai, K., Veeramraju Tirumala, S.: 'A sevenlevel VSI with a front-end cascaded three-level inverter and flying-capacitor-fed H-bridge.' IEEE Trans. Ind. Appl. 55(6), 6073-6088 (2019) https://doi.org/10.1109/TIA.2019.2933378
  19. Zhao, J., Chen, Y., Zeng, J., Liu, J.: Low-voltage stress seven-level inverter based on symmetrical capacitors. IEEE J. Emerg. Sel. Topics Power Electron (2021). https:// doi. org/ 10. 1109/ JESTPE. 2021. 31271 61 https://doi.org/10.1109/JESTPE.2021.31271
  20. Liu, J., Wu, J., Zeng, J., Guo, H.: A novel nine-level inverter employing one voltage source and reduced components as highfrequency AC power source. IEEE Trans. Ind. Electron. 32(4), 2939-2947 (2017) https://doi.org/10.1109/TPEL.2016.2582206
  21. Lin, W., Zeng, J., Hu, J., Liu, J.: "Hybrid nine-level boost inverter with simplified control and reduced active devices." IEEE J. Emerg. Sel. Topics Power Electron 9(2), 2038-2050 (2021) https://doi.org/10.1109/JESTPE.2020.2983205
  22. 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 Exp. Brief. 67(12), 3252-3256 (2020)
  23. Siddique MD, Mekhilef S, Karim MF, Rawa M, Shaw R, Seyedmahmoudian M, Horan B, Stojcevski A .: "Switched-capacitor based seven-level triple voltage gain boost inverter (7L-TVG-BI)", 2020 IEEE International Conference on Computing, Power and Communication Technologies (GUCON). 848-52. (2020)
  24. Sathik, M.J., Sandeep, N., Siddique, M.D., Almakhles, D., Mekhilef, S.: Compact seven-level boost type inverter topology. IEEE Trans. Circuits Syst. Exp. Brief. 68(4), 1358-1362 (2021)