Minimizing Leakage Magnetic Field of Wireless Power Transfer Systems Using Phase Difference Control

Seongho Woo; Yujun Shin; Changmin Lee; Jaewon Rhee; Jangyong Ahn; Jungick Moon; Seokhyeon Son; Sanguk Lee; Hongseok Kim; Seungyoung Ahn

LAPSE

Living Archive for Process Systems Engineering

LAPSE:2023.8505

Published Article

LAPSE:2023.8505

Minimizing Leakage Magnetic Field of Wireless Power Transfer Systems Using Phase Difference Control

Seongho Woo, Yujun Shin, Changmin Lee, Jaewon Rhee, Jangyong Ahn, Jungick Moon, Seokhyeon Son, Sanguk Lee, Hongseok Kim, Seungyoung Ahn

February 24, 2023

In this paper, we propose a method to reduce the leakage magnetic field from wireless power transfer (WPT) systems with series−series compensation topology by adjusting the phase difference between the transmitter (TX) coil current and the receiver (RX) coil current without additional shielding coils or materials. A WPT system employing the proposed method adjusts the phase difference between the TX coil current and RX coil current by tuning a resonant capacitor of the RX coil. The conditions for minimizing the leakage magnetic field are derived, and the range of the resonant capacitor of RX, considering power transfer efficiency and the leakage magnetic field, is proposed. Through simulations and experiments, it is verified that the proposed method can reduce the leakage magnetic field level without any additional materials. For that reason, the proposed method can be suitable for size-limited, weight-limited or cost-limited WPT systems.

Record ID

LAPSE:2023.8505

Keywords

electromagnetic field (EMF), leakage magnetic field, shielding method, wireless power transfer (WPT)

Subject

Process Control

Suggested Citation

Woo S, Shin Y, Lee C, Rhee J, Ahn J, Moon J, Son S, Lee S, Kim H, Ahn S. Minimizing Leakage Magnetic Field of Wireless Power Transfer Systems Using Phase Difference Control. (2023). LAPSE:2023.8505

Author Affiliations

Woo S: Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea [ORCID]
Shin Y: Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea [ORCID]
Lee C: Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea [ORCID]
Rhee J: Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea [ORCID]
Ahn J: Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea [ORCID]
Moon J: Electronics and Telecommunications Research Institute, Daejeon 34129, Korea [ORCID]
Son S: Hyundai Motors, 40, Namyang 18270, Korea
Lee S: Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea [ORCID]
Kim H: Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea
Ahn S: Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea [ORCID]

Journal Name

Energies

Volume

15

Issue

21

First Page

8202

Year

2022

Publication Date

2022-11-03