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http://dx.doi.org/10.6113/TKPE.2022.27.3.180

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

Woo, Jeong-Won (Dept. of Electrical & Electronics Engineering, Jeonju University)
Moon, Yu-Jin (Dept. of Electrical & Electronics Engineering, Jeonju University)
Kim, Eun-Soo (Dept. of Electrical & Electronics Engineering, Jeonju University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.27, no.3, 2022 , pp. 180-191 More about this Journal
Abstract
In this paper, a single-stage alternating current (AC)-DC converter is proposed for the automated-guided vehicle wireless charging system. The proposed converter is capable of soft-switching under all input voltage (VAC: 220 Vrms ± 10%), load conditions (0-1 kW), and air gap changes (40-60 mm) by phase control at a fixed switching frequency. In addition, controlling a wide output voltage (Vo: 39~54 VDC) is possible by varying the link voltage and improving the input power factor and the total harmonic distortion factor. Experimental results were verified by making a prototype of a 1-kW wireless power charging system that operates with robustness to changes in air gaps.
Keywords
WPT (Wireless Power Transfer); Single stage AC-DC converter; Soft switching; SS (Series-Series) compensation circuit;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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