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JPE, Vol. 19, No. 2, March 2019
Double-Loop Coil Design for Wireless Power Transfer to Embedded Sensors on Spindles
Suiyu Chen, Yongmin Yang, and Yanting Luo
Area Devices and Components
Abstract The major drawbacks of magnetic resonant coupled wireless power transfer (WPT) to the embedded sensors on spindles are transmission instability and low efficiency of the transmission. This paper proposes a novel double-loop coil design for wirelessly charging embedded sensors. Theoretical and finite-element analyses show that the proposed coil has good transmission performance. In addition, the power transmission capability of the double-loop coil can be improved by reducing the radius difference and width difference of the transmitter and receiver. It has been demonstrated by analysis and practical experiments that a magnetic resonant coupled WPT system using the double-loop coil can provide a stable and efficient power transmission to embedded sensors.
Keyword Embedded sensors,Magnetic resonant coupled,Spindle,WPT
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