水下具有旋转耦合机构的电场耦合无线电能传输系统及参数优化方法

doi:10.19595/j.cnki.1000-6753.tces.210558

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Abstract The present coupler of the Electric-filed Coupled Wireless Power Transfer (EC-WPT) system in the water environment mostly uses flat plate, which is not suitable for the application of wireless power supply in underwater rotating occasions. Therefore, an underwater EC-WPT system with a rotary coupler is proposed. The influence of the relative permittivity and thickness of the insulating layer on the coupling capacitance is analyzed, and the selection method of the insulating layer material and thickness is given. The coupler model is established. Taking the EC-WPT system with double-sided LC compensation network as an example, the equivalent circuit model of the system is established. Taking the system output power and transmission efficiency as the optimization objectives, and the antimisalignment as one of the constraints, a multi-constrained and multi-objective optimization method based on the NSGA-II algorithm is given. The feasibility and effectiveness of the parameter optimization method are verified by LT-Spice simulation. The prototype of the underwater rotary coupler EC-WPT system is built in the experiment, the efficiency is 87.7% when the output power is 311W, and the system has good antimisalignment. Under the same coupler and parameter optimization method, the output power of the system under water is about 2 times higher than that in air, and the antimisalignment performance under water is far better than that in air.

Key words： Wireless power transfer electric-field coupled underwater rotary coupler parameter optimization antimisalignment

Received: 20 April 2020

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TM724

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	Su Yugang
	Qian Linjun
	Liu Zhe
	Deng Renwei
	Sun Yue

Cite this article:

Su Yugang,Qian Linjun,Liu Zhe等. Underwater Electric-Filed Coupled Wireless Power Transfer System with Rotary Coupler and Parameter Optimization Method[J]. Transactions of China Electrotechnical Society, 2022, 37(10): 2399-2410.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.210558 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I10/2399

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