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- Title
Wireless Power Transfer System for Cardiac Pacemakers Based on Multi-Coil Series Magnetic Integration.
- Authors
Xiaoheng Yan; Jinshu Yao; Weihua Chen; Yuhang Song
- Abstract
We proposed a wireless power transfer system for cardiac pacemakers utilizing a multi-coil series magnetic integrated inductor-capacitor-capacitor/none (LCC-N) circuit topology operating at 50 kHz to reduce the volume of wireless power transfer systems for implanted pacemakers. Firstly, we established a mathematical model of LCC-N compensation topology and analyzed the relationship between the mutual inductance of the compensation and receiving coil and the system's transmission efficiency. The conclusion that the anti-offset performance of the system can be improved by using the change of the mutual inductance value was obtained. Secondly, the optimal coil structure was obtained via parameterized scanning, and a wireless power transfer system model for LCC-N was established for finite element simulation. The comparison of magnetic field strength was made between integrated and traditional non-integrated structures under aligned and offset conditions. Finally, the finite element simulation software ANSYS was adopted to establish a human body model, analyze the electromagnetic interference of the system to the human body, and evaluate the system's safety. Experimental results validated that the transmission efficiency of the system can reach 68.37%, and the output power was 1.47 W under multicoil series magnetic integrated structure when the transmission distance was 8 mm. The transmission efficiency remained 57.87% even with a horizontal offset of 8 mm, which is 13% higher than the traditional non-integrated structure.
- Subjects
WIRELESS power transmission; CARDIAC pacemakers; MAGNETIC flux density; MUTUAL inductance; ELECTROMAGNETIC interference; MAGNETIC structure; SIMULATION software
- Publication
Progress in Electromagnetics Research C, 2024, Vol 143, p87
- ISSN
1937-8718
- Publication type
Article
- DOI
10.2528/PIERC24031301