The Effect of Boost Coil and Alignment of Transmitting and Receiving Coils on Transmission Efficiency in EV Wireless Power Transfer Systems

Young-Kuk Choi, Don-Jung Lee and Sung-Jun Park ()
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Young-Kuk Choi: Optical Precision Measurement Research Center, Korea Photonics Technology Institute, Gwangju 61007, Republic of Korea
Don-Jung Lee: Optical Precision Measurement Research Center, Korea Photonics Technology Institute, Gwangju 61007, Republic of Korea
Sung-Jun Park: Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea

Energies, 2023, vol. 16, issue 7, 1-16

Abstract: As the electric vehicle (EV) market continues to grow, wireless charging technologies are constantly evolving. Considering the limitations of traditional charging methods, the adoption of wireless charging technology is an essential strategy, and the distribution of wireless charging systems is expected to accelerate in the global market with initiatives such as international standards for wireless charging systems. With regard to this technological trend, this study experimentally analyzed the effects of the boost coil and the alignment of the transmitting and receiving coils on the transmission efficiency in wireless power transfer systems. The boost coil amplifies the magnetic field using a high-frequency signal and transfers the field to the receiving coil. Moreover, simulations were conducted based on the theory that using the boost coil could increase the efficiency of wireless power transfer, and the impact of the alignment between the transmitting and receiving coils on the transmission efficiency was also analyzed.

Keywords: wireless transfer; boost coil; magnetic resonance; electric vehicle; LLC converter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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