WCSE

Wireless Energy Transfer Coil System for Industrial Applications

Abstract— In this paper, a critical component of a wireless charging system that utilizes Near Field Magnetic Coupling (NFMC) is addressed. Specifically, a scalable coil design process is presented that utilizes analytical equations, empirical data, and quasi-static EM simulations. While the coil design can typically be simplified to a transformer with air-core coils and ferrite shielding; the design can become complex under certain use-case conditions. These use-case conditions include spatial flexibility (in the xy plane) at an increased range (z-axis). Using the described process, a three-coil array is designed that can charge a target device up to 5 W at a distance of 30 mm to 40 mm at a frequency range of 100 kHz – 300 kHz, with a projected active charging area of approximately 60 cm² (15 cm X 4 cm). The coil-array is scalable in that more coils can be added to increase the active area with minimal impact on the wireless performance.

Index Terms— Wireless Charging, Coils, Magnetic Fields, Industrial IoT.

Feng Pan
Huzhou Juiding Electronics Company, Limited
Linfeng Chen
Huzhou Juiding Electronics Company, Limited
Kaikai Cai
Huzhou Juiding Electronics Company, Limited
V. Singh
Huzhou Juiding Electronics Company, Limited

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Cite: Feng Pan, Linfeng Chen, Kaikai Cai, V. Singh, " Wireless Energy Transfer Coil System for Industrial Applications, " WCSE 2022 Spring Event: 2022 9th International Conference on Industrial Engineering and Applications, pp. 642-652, Sanya, China, April 15-18, 2022.