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http://dx.doi.org/10.5515/KJKIEES.2018.29.12.935

Design and Performance Analysis of Magnetic Resonant Wireless Power Transfer Receiver for Implant Medical Device  

Kim, Sungjae (Department of Electronics, Information and Communication Engineering, Konkuk University)
Ku, Hyunchul (Department of Electronics, Information and Communication Engineering, Konkuk University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.29, no.12, 2018 , pp. 935-941 More about this Journal
Abstract
In this study, we propose a suitable magnetic resonant wireless power transfer(WPT) system topology for size-limited implant medical devices(IMDs). The proposed modified series-parallel topology(mSPT) can be implemented by adding an inductor in series to the parallel-connected Rx coil and a capacitor. The topology achieves high efficiency when the Rx coil has a small inductance. The validity and operating conditions of the system are verified theoretically through circuit analysis. Experiments were conducted with bio-blocks, which are made of pork fat and muscle. When the Rx coils were inserted into the blocks at a depth of 2.5~10 mm, mSPT showed 17.79 % improved efficiency on average compared with the conventional series-series topology(SST). In the case of 32 dBm WPT in air, the Rx coil's heating rate for the mSPT was $0.18^{\circ}C/s$, whereas the SST was $0.75^{\circ}C/s$. It was confirmed that the mSPT is more suitable for an IMD-targeted WPT system.
Keywords
Wireless Power Transfer; Magnetic Resonance; Implant Medical Device;
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Times Cited By KSCI : 2  (Citation Analysis)
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