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Volume 13
Issue 8
10.3390/jmse13081423
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

A Strong Misalignment Tolerance Wireless Power Transfer System for AUVs with Hybrid Magnetic Coupler

by
Haibing Wen
1,
Xiaolong Zhou
1,
Yu Wang
1,
Zhengchao Yan
2,*,
Kehan Zhang
2,
Jie Wen
2,
Lei Yang
1,
Yaopeng Zhao
1,
Yang Liu
3 and
Xiangqian Tong
1
1
School of Electrical Engineering, Xi’an University of Technology, Xi’an 710048, China
2
School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China
3
Xi’an Weiguang Energy Technology Co., Ltd., Xi’an 710199, China
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2025, 13(8), 1423; https://doi.org/10.3390/jmse13081423 (registering DOI)
Submission received: 22 June 2025 / Revised: 30 June 2025 / Accepted: 23 July 2025 / Published: 25 July 2025
(This article belongs to the Section Ocean Engineering)
Versions Notes

Abstract

Wireless power transfer systems require not only strong coupling capabilities but also stable output under various misalignment conditions. This paper proposes a hybrid magnetic coupler for autonomous underwater vehicles (AUVs), featuring two identical arc-shaped rectangular transmitting coils and a combination of an arc-shaped rectangular receiving coil and two anti-series connected solenoid coils. The arc-shaped rectangular receiving coil captures the magnetic flux generated by the transmitting coil, which is directed toward the center, while the solenoid coils capture the axial magnetic flux generated by the transmitting coil. The parameters of the proposed magnetic coupler have been optimized to enhance the coupling coefficient and improve the system’s tolerance to misalignments. To verify the feasibility of the proposed magnetic coupler, a 300 W prototype with LCC-S compensation topology is built. Within a 360° rotational misalignment range, the system’s output power maintains around 300 W, with a stable power transmission efficiency of over 92.14%. When axial misalignment of 40 mm occurs, the minimum output power is 282.8 W, and the minimum power transmission efficiency is 91.6%.
Keywords: wireless power transfer (WPT); autonomous underwater vehicle (AUV); hybrid magnetic coupler; misalignment tolerance; magnetic flux wireless power transfer (WPT); autonomous underwater vehicle (AUV); hybrid magnetic coupler; misalignment tolerance; magnetic flux

Share and Cite

MDPI and ACS Style

Wen, H.; Zhou, X.; Wang, Y.; Yan, Z.; Zhang, K.; Wen, J.; Yang, L.; Zhao, Y.; Liu, Y.; Tong, X. A Strong Misalignment Tolerance Wireless Power Transfer System for AUVs with Hybrid Magnetic Coupler. J. Mar. Sci. Eng. 2025, 13, 1423. https://doi.org/10.3390/jmse13081423

AMA Style

Wen H, Zhou X, Wang Y, Yan Z, Zhang K, Wen J, Yang L, Zhao Y, Liu Y, Tong X. A Strong Misalignment Tolerance Wireless Power Transfer System for AUVs with Hybrid Magnetic Coupler. Journal of Marine Science and Engineering. 2025; 13(8):1423. https://doi.org/10.3390/jmse13081423

Chicago/Turabian Style

Wen, Haibing, Xiaolong Zhou, Yu Wang, Zhengchao Yan, Kehan Zhang, Jie Wen, Lei Yang, Yaopeng Zhao, Yang Liu, and Xiangqian Tong. 2025. "A Strong Misalignment Tolerance Wireless Power Transfer System for AUVs with Hybrid Magnetic Coupler" Journal of Marine Science and Engineering 13, no. 8: 1423. https://doi.org/10.3390/jmse13081423

APA Style

Wen, H., Zhou, X., Wang, Y., Yan, Z., Zhang, K., Wen, J., Yang, L., Zhao, Y., Liu, Y., & Tong, X. (2025). A Strong Misalignment Tolerance Wireless Power Transfer System for AUVs with Hybrid Magnetic Coupler. Journal of Marine Science and Engineering, 13(8), 1423. https://doi.org/10.3390/jmse13081423

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