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Open AccessArticle
Modeling and Transmission Characteristics Study of a Resonant Underwater Wireless Electric Power Transmission System
by
Qiong Hu
Qiong Hu 1,2,
Yu Qin
Yu Qin 1,2,*,
Zhenfu Li
Zhenfu Li 1,2,
Meiling Zheng
Meiling Zheng 1,2,
Junqiang Huang
Junqiang Huang 1,2 and
Yujia Ou
Yujia Ou 1,2
1
School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
2
State Key Laboratory of Deep Sea Mineral Resources Development and Utilization Technology, Changsha 410012, China
*
Author to whom correspondence should be addressed.
Energies 2024, 17(15), 3717; https://doi.org/10.3390/en17153717 (registering DOI)
Submission received: 3 July 2024
/
Revised: 26 July 2024
/
Accepted: 26 July 2024
/
Published: 28 July 2024
Abstract
Compared to the traditional wet-mate underwater power supply method, Magnetic Coupling Resonant Wireless Power Transfer (MCR-WPT) technology boasts advantages such as excellent insulation, high safety, and convenient operation, showing promising application prospects in the field of power supply for underwater vehicles and other mobile underwater devices. In order to explore the transmission characteristics of this technology underwater, this article first establishes a traditional mathematical model, and then modifies the underwater model through analysis of changes in coil self-inductance and mutual inductance, as well as the impact of eddy current losses. Using the modified mathematical model of the underwater MCR-WPT system, the transmission characteristics are analyzed, and simulations and experimental validations are performed using MATLAB R2022a software. In the study of frequency characteristics, it is found that the system operates optimally when both ends of the circuit work at the resonant state; that is, when finput = fresonance = 100 kHz, the output performance is at its best, and the optimal resonant frequency significantly improves power and transmission efficiency. When the input frequency is less than 87.3 kHz or greater than 122.9 kHz, the output power decreases to less than half of the maximum power. In the investigation of load effects, the optimal load for maximizing system output power was identified, but the load that maximizes transmission efficiency is different from this optimal load. This study provides strong theoretical support and guidance for improving the performance of underwater wireless power transmission systems.
Share and Cite
MDPI and ACS Style
Hu, Q.; Qin, Y.; Li, Z.; Zheng, M.; Huang, J.; Ou, Y.
Modeling and Transmission Characteristics Study of a Resonant Underwater Wireless Electric Power Transmission System. Energies 2024, 17, 3717.
https://doi.org/10.3390/en17153717
AMA Style
Hu Q, Qin Y, Li Z, Zheng M, Huang J, Ou Y.
Modeling and Transmission Characteristics Study of a Resonant Underwater Wireless Electric Power Transmission System. Energies. 2024; 17(15):3717.
https://doi.org/10.3390/en17153717
Chicago/Turabian Style
Hu, Qiong, Yu Qin, Zhenfu Li, Meiling Zheng, Junqiang Huang, and Yujia Ou.
2024. "Modeling and Transmission Characteristics Study of a Resonant Underwater Wireless Electric Power Transmission System" Energies 17, no. 15: 3717.
https://doi.org/10.3390/en17153717
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