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http://dx.doi.org/10.6113/TKPE.2020.25.1.44

A Bridgeless Single Stage AC-DC Converter for Wireless Power Charging System  

Kim, Min-Ji (Electrical & Electronics Engineering, Jeonju University)
Yoo, Sang-Jae (Electrical & Electronics Engineering, Jeonju University)
Yoo, Kyung-Jong (Electrical & Electronics Engineering, Jeonju University)
Woo, Jung-Won (Electrical & Electronics Engineering, Jeonju University)
Kim, Eun-Soo (Electrical & Electronics Engineering, Jeonju University)
Hwang, In-Gab (Electrical & Electronics Engineering, Jeonju University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.25, no.1, 2020 , pp. 44-53 More about this Journal
Abstract
A bridgeless single-stage AC-DC converter for wireless power charging systems is proposed. This converter is composed of a PFC stage and a three-level hybrid DC-DC stage. The proposed converter can control the wide output voltage (200-450 VDC) by the variable link voltage and the pulse-width voltage applied to the primary resonant circuit due to the phase-shifted modulation at a fixed switching frequency. Moreover, the input power factor and the total harmonic distortion can be improved by using the proposed converter. A 1 kW prototype was fabricated and validated through experimental results and analysis.
Keywords
Single stage AC-DC converter; WPTS(Wireless Power Transfer System); Hybrid three level DC-DC converter; Resonant converter; EV charger;
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