Skip to main content
SpringerLink
Log in

New power equalization modulation strategy for CHB seven-level inverters

  • Original Article
  • Published:
Journal of Power Electronics Aims and scope Submit manuscript

A Correction to this article was published on 08 May 2023

This article has been updated

Abstract

For cascaded H-bridge (CHB) multilevel converters, the traditional in-phase disposition (IPD) modulation strategy has excellent harmonic elimination characteristics, but it leads to a single state of the switching tubes and unbalanced output power of each unit. In this paper, a new power equalization modulation strategy and its optimization are proposed, which solves the problem of power equalization, while taking into account the harmonic elimination performance of the output voltage and power equalization time. The new power equalization modulation strategy makes the carrier rotate in different carrier layers in a new interval, and the voltage of each unit is readjusted using the redundant switching states. Thus, the output power equalization can be achieved in a shorter time. While maintaining the output characteristics of the existing modulation strategy, the new modulation strategy reduces the power equalization time and preserves the harmonic elimination characteristics of IPD. In addition, the optimized modulation strategy reduces the number of carriers, lowering the difficulty of digital control. Finally, simulation and experimental results are used to verify the correctness and feasibility of the new power equalization modulation strategy and its optimization.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14
Fig. 15
Fig. 16
Fig. 17
Fig. 18
Fig. 19

Similar content being viewed by others

Change history

References

  1. Ye, M., Ren, W., Chen, L., et al.: Research on power-balance control strategy of CHB multilevel inverter based on TPWM. IEEE Access. 7, 157226–157240 (2019)

    Article  Google Scholar 

  2. Jammala, V., Yellasiri, S., Panda, A.K.: Development of a new hybrid multilevel inverter using modified carrier SPWM switching strategy. IEEE Trans. Power Electron. 33(10), 8192–8197 (2018)

    Article  Google Scholar 

  3. Ye, M., Zhang, J.F., Chen, C.L., et al.: Modified modulation strategy with balanced power and switching losses distributed for seven-level cascaded H-bridge inverters. IEEE Access. 7, 134036–134046 (2019)

    Article  Google Scholar 

  4. Wang, L., Chen, X., Zhang, Z., et al.: Voltage equalization control of three-phase cascaded H-bridge multilevel rectifiers. J. Power Electron. 23(2), 230–240 (2022)

    Article  Google Scholar 

  5. Li, Y., Wang, Y., Li, B.Q.: Generalized theory of phase-shifted carrier PWM for cascaded h-bridge converters and modular multilevel converters. IEEE J. Emerg. Sel. Topics Power Electron. 4(2), 589–605 (2016)

    Article  Google Scholar 

  6. Lu, J., Zhang, M., Wen, J., et al.: Parameter design of active damping-based shunt hybrid active power filters. J. Power Electron. (2022). https://doi.org/10.1007/s43236-022-00571-2

    Article  Google Scholar 

  7. Liang, X., He, J.: Load model for medium voltage cascaded h-bridge multi-level inverter drive systems. IEEE Power Energy Technol. Syst. J. 3(1), 13–23 (2016)

    Article  Google Scholar 

  8. Lu, J., Liu, Z., Zeng, W., et al.: New PWM predictive control suitable for low carrier ratio of permanent magnet synchronous motor drive systems. J. Power Electron. 21, 881–891 (2021)

    Article  Google Scholar 

  9. Shieh CS.: Quick implementation of pule wise modulation (PWM), pulse frequency modulation (PFM) and mixed PWM/PFM on FPGA chip. International Symposium on Computer, Consumer and Control. 444–447 (2020)

  10. Perez M, Kouro S, Rodriguez J et al.: Modified staircase modulation with low input current distortion for multicell converters. Power Electronics Specialists Conference, 1989–1994 (2008)

  11. Kumar, S.S., Iruthayarajan, M.W., Sivakumar, T.: Evolutionary algorithm based selective harmonic elimination for three-phase cascaded H-bridge multilevel inverters with optimized input sources. J. Power Electron. 20, 1172–1183 (2020)

    Article  Google Scholar 

  12. Ye, M., Chen, L., Kang, L., et al.: Hybrid multi-carrier PWM technique based on carrier reconstruction for cascaded h-bridge inverter. IEEE Access. 7, 53152–53162 (2019)

    Article  Google Scholar 

  13. Hammond, P.W.: A new approach to enhance power quality for medium voltage AC drives. IEEE Trans. Ind. Appl. 33(1), 202–208 (1997)

    Article  Google Scholar 

  14. Razi A, Wahab A, Shukor S.: Improved wave shape-pattern performance using Phase Opposite Disposition (POD) method for cascaded multilevel inverter. 2016 IEEE 2nd Annual Southern Power Electronics Conference. 1–6 (2016)

  15. Wang, C., Zhang, L., Zhang, Z., et al.: Imbalance phenomenon caused by CPS-PWM strategy for MMC systems. J. Power Electron. 21, 59–70 (2021)

    Article  Google Scholar 

  16. Lee, E.J., Lee, K.B.: Performance improvement of cascaded H-bridge multilevel inverters with modified modulation scheme. J. Power Electron. 21, 541–552 (2021)

    Article  Google Scholar 

  17. Ge, B., Peng, F.Z., De Almeida, A.T., et al.: An effective control technique for medium-voltage high-power induction motor fed by cascaded neutral-point-clamped inverter. IEEE Trans. Ind. Elec. Mag. 57(8), 2659–2668 (2010)

    Article  Google Scholar 

  18. Sarkar, I., Fernandes, B. G.: Modified hybrid multi-carrier PWM technique for cascaded H-Bridge multilevel inverter. Annual Conference of the IEEE Industrial Electronics Society, 4318–4324 (2014)

  19. Devi, V., Srivani, S. G.: Modified phase shifted PWM for cascaded H bridge multilevel inverter. 2017 Third International Conference on Advances in Electrical, Electronics, Information, Communication and Bio-Informatics, 89–94 (2017)

  20. Gong, R., Xue, B., Liu, J., et al.: Power balance modulation strategy for hybrid cascaded H-bridge multi-level inverter. Electr. Eng. 104, 753–762 (2022)

    Article  Google Scholar 

  21. Chen, Z., Xu, Y., Yuan, T.: Power balance control method with phase disposition for cascaded H-bridge inverter based on control degrees of freedom combination. Proc. CSEE 37(23), 6951–6961 (2017)

    Google Scholar 

  22. Gu, J., Song, F., Li, P., et al.: Power balance modulation method based on freedom degree control of the carriers. High Voltage Eng. 48(10), 4017–4026 (2021)

Download references

Funding

This paper is supported by the Graduate Innovation Fund Project of Anhui University of Science and Technology (2022CX2079).

Author information

Authors and Affiliations

  1. School of Electrical and Information Engineering, Anhui University of Science and Technology, Huainan, China

    Jun Gu, Run-Zhe Cai, Xiang-Yu Zhou, Chao Ding & Wei-Jian Wang

Authors
  1. Jun Gu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Run-Zhe Cai
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Xiang-Yu Zhou
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Chao Ding
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Wei-Jian Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Run-Zhe Cai.

Ethics declarations

Conflict of interest

On behalf of all the authors, the corresponding author states that there is no conflict of interest.

Additional information

The original online version of this article was revised: In this article a funding note has been added.

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Gu, J., Cai, RZ., Zhou, XY. et al. New power equalization modulation strategy for CHB seven-level inverters. J. Power Electron. 23, 1063–1072 (2023). https://doi.org/10.1007/s43236-023-00606-2

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s43236-023-00606-2

Keywords

Search

Navigation