Single stage AC-DC converter for wireless power transfer operating within wide voltage control range

Min-Ji Kim; Jeong-Won Woo; Eun-Soo Kim

Single stage AC-DC converter for wireless power transfer operating within wide voltage control range

Min-Ji Kim

Jeong-Won Woo

Eun-Soo Kim

Vol. 21, No. 5, pp. 768-781, May 2021

10.1007/s43236-021-00227-7

Wireless power transfer (WPT)

AC-DC converter

Single stage converter

SS compensation circuit

Abstract

In the field of e-mobility and automated guided vehicles, studies on a wireless power transfer (WPT) charging system have been conducted recently owing to its convenience, reliability, and positive environmental impact due to the elimination of cords. In this paper, a wireless power transfer charging system using a single-stage AC-DC converter is proposed that can be reduced in size and weight to ensure convenience. The proposed single-stage AC-DC converter can control a wide output voltage (36-54 VDC) within the coupling ranges due to the variable link voltage applied to a WPT resonant circuit through phase-shifted modulation at a fixed switching frequency. In addition, the input power factor (PF) and the total harmonic distortion (THDi) can be improved through the use of the proposed converter. A 1-kW prototype with a 50-mm air gap was fabricated and its effectiveness was validated based on analysis and experimental results.

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Cite this article

[IEEE Style]

M. Kim, J. Woo, E. Kim, "Single stage AC-DC converter for wireless power transfer operating within wide voltage control range," Journal of Power Electronics, vol. 21, no. 5, pp. 768-781, 2021. DOI: 10.1007/s43236-021-00227-7.

[ACM Style]

Min-Ji Kim, Jeong-Won Woo, and Eun-Soo Kim. 2021. Single stage AC-DC converter for wireless power transfer operating within wide voltage control range. Journal of Power Electronics, 21, 5, (2021), 768-781. DOI: 10.1007/s43236-021-00227-7.