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

The Korean Institute of Power Electronics (전력전자학회)
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Comparison of Efficiency According to the Two Control Method of the Wireless Charging System Considering Wired/Wireless Integrated Charging System for EV

전기자동차용 유·무선 통합 충전을 고려한 무선 충전 시스템의 두 가지 제어 방식에 따른 효율 비교·분석

  • Heo, Hun (Dept. of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Lee, Ju-A (Dept. of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Sim, Dong-Hyun (Dept. of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Son, Won-Jin (Dept. of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Lee, Byoung-Kuk (Dept. of Electrical and Computer Engineering, Sungkyunkwan University)
  • Received : 2021.10.11
  • Accepted : 2021.11.08
  • Published : 2022.06.20
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Abstract

The charging methods of electric vehicles are divided into wired charging and wireless charging. Restrictions on the use of charging infrastructure for wireless charging vehicles currently exist because most charging infrastructure uses the wired charging method. Thus, wired and wireless integrated charging system has been studied. In this system, a wireless charging system especially requires a control method for high-efficiency operation in consideration of a change in a coupling coefficient. Therefore, this paper introduces two control methods for the high-efficiency operation of wireless charging that can be applied to wired and wireless integrated charging systems. In addition, loss analysis is performed through PSIM simulation to select a more advantageous method for high-efficiency operation among the two control methods. To verify the simulation-based loss analysis result, the two control methods are applied to the actual wireless charging system, and the efficiency is compared through the experiments Based on the experimental results, a control method suitable for high-efficiency operation of the wireless charging method is selected.

Keywords

Acknowledgement

이 연구는 2020년도 산업통상자원부 및 산업기술평가관리원(KEIT) 연구비 지원에 의한 연구임.('20011656') 이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임. (No. 2020R1A2C2003445)

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