Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/68490
Title: Three-coil topology for wireless power transfer
Authors: Ni, B 
Chung, CY 
Chan, HL 
Issue Date: 8-Mar-2016
Source: US Patent 9,281,119 B2. Washington, DC: US Patent and Trademark Office, 2016. How to cite?
Abstract: A system using a three-coil topology for wireless power transfer is disclosed. The system comprises a primary resonator coupled to a power source, a repeater resonator and a receiver resonator. The primary resonator has a primary coil, and the repeater resonator has a repeater coil adjacent to the primary coil. The repeater coil and the primary coil are separated by a distance selected, and the repeater coil is configured, to amplify a primary-coil current by inductively generating a repeater-coil current that is substantially greater than the primary-coil current. A magnetic field contributed from both the primary-coil current and the repeater-coil current is generated while the power source needs not provide a terminal voltage across the repeater coil, thereby discouraging occurrence of voltage stress at the power source. The receiver resonator has a receiver coil, which receives the magnetic field to inductively generate a receiver-coil current for feeding to a load.
URI: http://hdl.handle.net/10397/68490
Rights: Assignee: The Hong Kong Polytechnic Univeristy.
Appears in Collections:Patent

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