Hybrid phase‑shifted modulation method for hybrid cascaded H‑bridge inverters

Wenhua Hu; Jiamin Guo; Jianfeng Liu; Yisheng Yuan

Hybrid phase‑shifted modulation method for hybrid cascaded H‑bridge inverters

Vol. 21, No. 10, pp. 1556-1566, Oct. 2021

10.1007/s43236-021-00287-9

Abstract

Due to its unreasonable DC voltage distribution, the phase-shifted pulse width modulation (PS-PWM) method cannot be directly applied to equal-ratio and equal-difference hybrid CHB inverters. Thus, these types of inverters lose the double-frequency characteristic of the CHB topology. To preserve this double-frequency characteristic, reduce the switching frequency of the high-voltage cells, and simplify the modulation method. This article proposes an optimized topology for the hybrid CHB inverter by optimizing the distribution of the DC voltage. A hybrid PS-PWM method is also proposed by combing the step-wave modulation method and the PS-PWM method. Theoretical analysis, simulation analysis, and experimental results show that the optimized topology and the hybrid PS-PWM method are both valid and feasible.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

W. Hu, J. Guo, J. Liu, Y. Yuan, "Hybrid phase‑shifted modulation method for hybrid cascaded H‑bridge inverters," Journal of Power Electronics, vol. 21, no. 10, pp. 1556-1566, 2021. DOI: 10.1007/s43236-021-00287-9.

[ACM Style]

Wenhua Hu, Jiamin Guo, Jianfeng Liu, and Yisheng Yuan. 2021. Hybrid phase‑shifted modulation method for hybrid cascaded H‑bridge inverters. Journal of Power Electronics, 21, 10, (2021), 1556-1566. DOI: 10.1007/s43236-021-00287-9.