Abstract
Wireless power transfer (WPT) technology has been applied in all walks of life on account of its advantages, but most WPT systems have low offset tolerance performance, which hinders its development. In order to further improve the lateral offset tolerance performance of a WPT system with asymmetric magnetic coupler, a cross-shaped solenoid magnetic coupler with higher lateral offset tolerance performance is proposed in this paper. Firstly, the coil structure of the proposed magnetic coupler is optimized and simulated through FEA-based simulations to obtain high lateral offset tolerance performance by making mutual inductance relatively stable with wide range of lateral offset. Then, the analysis of the mutual inductance is proposed to verify the method to reach the purpose. Finally, the LCC-S resonance topology is applied in the proposed WPT system, the experimental results show that the proposed magnetic coupler makes the system output power relatively stable around 51.95 W with a stable maximum efficiency of 72.4% when the lateral offset varies from −9 cm to 9 cm and the transfer distance is 2 cm.
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Acknowledgments
This research was funded by the National Natural Science Foundation of China (Grant No. 51407084), the China Postdoctoral Science Foundation (Grant No. 2017M610294), the Jiangsu Planned Projects for Postdoctoral Research Funds (Grant No. 1701092B) and Sichuan Cuisine Development Research Center Planning Project (Grant No. CC22Z01).
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Zhang, C., Lu, W., Zhao, J., Fan, Q., Chen, H. (2023). A Cross-Shaped Solenoid Magnetic Coupler with High Lateral Offset Tolerance. In: Ma, C., Zhang, Y., Li, S., Zhao, L., Liu, M., Zhang, P. (eds) The Proceedings of 2022 International Conference on Wireless Power Transfer (ICWPT2022). ICWPT 2022. Lecture Notes in Electrical Engineering, vol 1018. Springer, Singapore. https://doi.org/10.1007/978-981-99-0631-4_25
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DOI: https://doi.org/10.1007/978-981-99-0631-4_25
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