Selective Wireless Power Transfer via Magnetic Resonant Coupling by Using Variable Impedance Circuit

Recently, Wireless Power Transfer (WPT) via Magnetic Resonant Coupling is especially focused around the world. Since a space will have a lot of devices in the future, WPT considering multiple devices will be required. It is important to consider not only power transfer efficiency but also power dist...

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Bibliographic Details
Published inIECON 2018 44th Annual Conference of the IEEE Industrial Electronics Society pp. 4834 - 4839
Main Authors Nakagawa, Takahiro, Sugimoto, Tomoya, Nozaki, Takahiro, Murakami, Toshiyuki
Format Conference Proceeding
LanguageEnglish
Japanese
Published IEEE 01.10.2018
Subjects
Capacitance
Couplings
Impedance
Integrated circuit modeling
magnetic resonant coupling
metal-oxide-semiconductor field-effect transistor (MOSFET)
MOSFET
Power distribution
Receivers
selective wireless power transfer
variable impedance
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Summary:Recently, Wireless Power Transfer (WPT) via Magnetic Resonant Coupling is especially focused around the world. Since a space will have a lot of devices in the future, WPT considering multiple devices will be required. It is important to consider not only power transfer efficiency but also power distribution when power is wirelessly transferred to multiple devices. The amount of received power in a receiver depends on the impedance of the receiver and the ratio of power distribution has the relation to the impedance. Conventional WPT system requires a few controllable repeaters and the large size of the receiver. In this paper, a variable impedance circuit for power distribution is proposed. Using the proposed circuit controllable by DC voltage, the problem for the conventional system is solved. In the future when WPT is popular, the circuit realizes electrically controllable power distribution.
ISSN:2577-1647
DOI:10.1109/IECON.2018.8591162