TY - GEN
T1 - Experimental verification of impedance matching method for repeater to improve spatial freedom of 6.78 MHz resonant inductive coupling wireless power transfer systems
AU - Fujiki, Keita
AU - Ishihara, Masataka
AU - Umetani, Kazuhiro
AU - Hiraki, Eiji
PY - 2019/9
Y1 - 2019/9
N2 - Placing a repeater, which relays the magnetic field from the transmitter to the receiver, is promising as a method to increase the spatial freedom of resonant inductive coupling wireless power transfer systems (RIC-WPT) working at 6.78MHz. However, the capability of the repeater is often affected by a frequency splitting phenomenon. When this phenomenon occurs, the resonance in the repeater becomes sufficiently small at a fixed operating frequency and make it difficult to improve the spatial freedom. To solve this problem, we apply an impedance matching method using simple switching circuits to the 6.78 RIC-WPT system with the repeater. Then we carry out experiments to verify the effectiveness of the impedance matching method. The experimental results show that the repeater improves the spatial freedom of the 6.78 MHz RIC-WPT regardless of the frequency splitting phenomenon.
AB - Placing a repeater, which relays the magnetic field from the transmitter to the receiver, is promising as a method to increase the spatial freedom of resonant inductive coupling wireless power transfer systems (RIC-WPT) working at 6.78MHz. However, the capability of the repeater is often affected by a frequency splitting phenomenon. When this phenomenon occurs, the resonance in the repeater becomes sufficiently small at a fixed operating frequency and make it difficult to improve the spatial freedom. To solve this problem, we apply an impedance matching method using simple switching circuits to the 6.78 RIC-WPT system with the repeater. Then we carry out experiments to verify the effectiveness of the impedance matching method. The experimental results show that the repeater improves the spatial freedom of the 6.78 MHz RIC-WPT regardless of the frequency splitting phenomenon.
KW - Contactless Energy Transfer
KW - Gallium Nitride (GaN)
KW - Wireless power transmission
UR - http://www.scopus.com/inward/record.url?scp=85076669130&partnerID=8YFLogxK
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U2 - 10.23919/EPE.2019.8915171
DO - 10.23919/EPE.2019.8915171
M3 - Conference contribution
AN - SCOPUS:85076669130
T3 - 2019 21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe
BT - 2019 21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe
Y2 - 3 September 2019 through 5 September 2019
ER -