Journal
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume 32, Issue 12, Pages 1479-1482Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2022.3181183
Keywords
Conformal; flexible printed circuit (FPC) coils; transmission efficiency (TE); wireless power transmission (WPT)
Categories
Funding
- National Natural Science Foundation of China [61961006]
- Science and Technology Foundation of Guizhou Province [QKHJC[2020]1Y257]
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In this paper, a magnetically coupled resonant wireless power transfer system based on flexible printed circuit coils on a conformal cylindrical surface is designed. The relationship between the self-inductance/mutual inductance of the flexible coil and the bending radius of the conformal cylindrical surface is explored through mathematical analysis and simulations. The results show that as the bending radius decreases, the self-inductance and mutual inductance of the coil decrease nonlinearly. The transmission efficiency also decreases, and the resonant frequency shifts to a higher range.
In this letter, we design a magnetically coupled resonant wireless power transfer (MCR-WPT) system on the conformal cylindrical surface based on the flexible printed circuit (FPC) coils. The coil has the advantages of small size, lightweight, and high bendability. We combine mathematics and simulations to explore the relationship between the self-inductance/mutual inductance of the flexible coil and the bending radius of the conformal cylindrical surface. Both theoretical and simulation results show that as the bending radius decreases linearly, the self-inductance and mutual inductance of the coil also decrease nonlinearly. In addition, as the bending radius decreases, the transmission efficiency (TE) decreases, and the resonant frequency shifts to a higher range. Finally, measured and simulated results agree well, which further validates the conclusions.
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