Design and optimization of air core spiral resonators for magnetic coupling wireless power transfer on seawater

This paper focuses on the design of high quality spiral resonators for maximising wireless power transfer efficiency between an AUV and an underwater docking station. By using 3D electromagnetic simulations and numerical analysis, the relevant parameters for quality factor computation are extracted. The impact of different variables on a spiral resonator's quality factor is assessed, allowing to conclude on the optimum design parameters to achieve optimum efficiency on the power transmission through magnetic coupling. This work will contribute to enable the development future AUV wireless charging systems, which will allow for an improvement of AUV's range and endurance while ensuring lower operational costs.

[1]  W.B. Kuhn.  Approximate analytical modeling of current crowding effects in multi-turn spiral inductors , 2000, 2000 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium Digest of Papers (Cat. No.00CH37096).

[2]  E. Karagianni.  ELECTROMAGNETIC WAVES UNDER SEA: BOW-TIE ANTENNAS DESIGN FOR WI-FI UNDERWATER COMMUNICATIONS , 2015 .

[3]  M. Kesler.  Highly Resonant Wireless Power Transfer: Safe, Efficient, and over Distance , 2013 .

[4]  Heng-Ming Hsu.  Effective series-resistance model of spiral inductors , 2005 .

[5]  Seong-Min Kim,et al.  1.9MHz wireless power transmission system using coupled magnetic resonance , 2012, 2012 19th International Conference on Microwaves, Radar & Wireless Communications.

[6]  K. Shinyama,et al.  Study on the electrical properties of a biodegradable plastic , 2003, Proceedings of the 7th International Conference on Properties and Applications of Dielectric Materials (Cat. No.03CH37417).

[7]  Alanson P. Sample,et al.  Analysis , Experimental Results , and Range Adaptation of Magnetically Coupled Resonators for Wireless Power Transfer , 2010 .

[8]  Zhang Bin,et al.  Modeling and analysis of wireless power transmission system via strongly coupled magnetic resonances , 2014, 2014 International Conference on Mechatronics and Control (ICMC).