Soft‑switching modulation strategy based on hybrid control for three‑phase wireless power transfer systems

Jun Huang; Hongbo Zhu; Yu Wang; Kai Li

Soft‑switching modulation strategy based on hybrid control for three‑phase wireless power transfer systems

Vol. 23, No. 12, pp. 1833-1845, Dec. 2023

10.1007/s43236-023-00673-5

Three-phase wireless power transfer system

Frequency plus duty cycle modulation

Zero-voltage switching

Optimal modulation strategy

Multi-objective optimization of coils

Abstract

A hybrid control strategy is proposed for a SS compensated three-phase wireless power transfer (3P-WPT) system, which realizes full zero-voltage switching (ZVS) operation of the converter during the entire charging process of a battery. First, a mathematical equivalent model of 3P-WPT is established by fundamental harmonic approximation, the ZVS operation of the active bridge in the constant current (CC) charging mode is optimized by considering the relationship between the input impedance, operation frequency, and duty cycle. Consequently, an optimal modulation strategy featuring full ZVS operation is proposed for the constant current and constant voltage (CV) charging modes of 3P-WPT. Second, based on the NSGA-II algorithm, a mathematical model for the multi-objective optimization of coils is established, which aims for a high transmission frequency and power density. The parameters of coils are optimized accordingly. Finally, a 2 kW experimental prototype is built. Experimental results verify the effectiveness of the proposed control strategy, where the maximum efficiency is up to 90.26% at a full load.

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]

J. Huang, H. Zhu, Y. Wang, K. Li, "Soft‑switching modulation strategy based on hybrid control for three‑phase wireless power transfer systems," Journal of Power Electronics, vol. 23, no. 12, pp. 1833-1845, 2023. DOI: 10.1007/s43236-023-00673-5.

[ACM Style]

Jun Huang, Hongbo Zhu, Yu Wang, and Kai Li. 2023. Soft‑switching modulation strategy based on hybrid control for three‑phase wireless power transfer systems. Journal of Power Electronics, 23, 12, (2023), 1833-1845. DOI: 10.1007/s43236-023-00673-5.