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http://dx.doi.org/10.6113/TKPE.2022.27.6.515

Wireless Power Charging System Capable of Soft-Switching Operation Even in Wide Air Gaps  

Yu-Jin, Moon (Electrical & Electronics Engineering, Jeonju University)
Jeong-Won, Woo (Electrical & Electronics Engineering, Jeonju University)
Eun-Soo, Kim (Dept. of Electrical & Electronics Engineering, Jeonju University)
In-Gab, Hwang (Electrical & Electronics Engineering, Jeonju University)
Jong-Seob, Won (Mechanical and Automotive Engineering, Jeonju University)
Sung-Soo, Kang (Mechanical and Automotive Engineering, Jeonju University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.27, no.6, 2022 , pp. 515-525 More about this Journal
Abstract
The wireless power transfer (WPT) charging system for AGV depends highly on the coupling conditions due to air gap variation. To attain stable output power with high transfer efficiency under various coupling conditions, a single-stage, DC-DC converter that operates with robustness to changes in air gaps is proposed for the WPT system. The proposed converter is capable of soft switching under the set input voltage (Vin: 380 VDC), load conditions (0-1 kW), and air gap changes (30-70 mm). In addition, a wide output voltage range (Vo: 39-54 VDC) can be controlled by varying the link voltage due to the phase control at a fixed switching frequency. Experimental results are verified using a prototype of a 1 kW wireless power charging system.
Keywords
WPT(Wireless Power Transfer); Single stage DC-DC converter; AGV(Automated Guided Vehicle); SS(Series-Series) compensation circuit;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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