The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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An Improved Wireless Power Charging System Capable of Stable Soft-Switching Operation Even in Wide Air Gaps

넓은 공극 범위에서도 안정된 소프트 스위칭 동작 가능한 개선된 무선 전력 충전 시스템

  • 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)
  • Received : 2021.10.07
  • Accepted : 2022.01.04
  • Published : 2022.06.20
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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

Acknowledgement

이 논문은 2021년 과학기술정보통신부의 재원으로 한국연구재단의 지원을 받아 수행된 연구임. (AGV 무선 전력 전송 충전 시스템 상용화 기반 기술 개발)

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