A Novel Underwater Wireless Power Transfer System Based on LCC-S Compensation Topology with Wide Soft-Switching Range

Yu, Huiying; Liu, Hongchen; Wang, Youzheng; Gao, Fei; Wheeler, Patrick

Abstract

Under the influence of high sea conditions and dynamic marine environments, the compensation parameter values in the system are prone to fluctuations, potentially compromising the soft-switching stability. In addition, a significant proportion of the total loss in the three-phase wireless power transfer (WPT) system is attributed to the switching loss. To address these challenges, this article proposes a three-phase WPT system featuring a low-loss passive auxiliary network with an inductor-capacitor–capacitor-series (LCC-S) compensation topology. With the support of this passive auxiliary network, the system’s switches can achieve zero-voltage switching (ZVS) turn-on and ZVS turn-off across its wide load range while exhibiting insensitivity to fluctuations in compensation parameters. This article first analyzes the soft-switching communication mechanism of the proposed structure before designing the wide range soft-switching conditions and parameters for the system. Finally, an underwater three-phase WPT experimental prototype with a rated power of 1 kW is developed, and the results demonstrate the superiority of the proposed scheme.

Citation

Yu, H., Liu, H., Wang, Y., Gao, F., & Wheeler, P. (2025). A Novel Underwater Wireless Power Transfer System Based on LCC-S Compensation Topology with Wide Soft-Switching Range. IEEE Journal of Emerging and Selected Topics in Power Electronics, 13(2), 2695-2706. https://doi.org/10.1109/JESTPE.2025.3535570

• Journal Article Type: Article
• Acceptance Date: Jan 23, 2025
• Online Publication Date: Jan 29, 2025
• Publication Date: 2025-04
• Deposit Date: Apr 25, 2025
• Journal: IEEE Journal of Emerging and Selected Topics in Power Electronics
• Print ISSN: 2168-6777
• Electronic ISSN: 2168-6785
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 13
• Issue: 2
• Pages: 2695-2706
• DOI: https://doi.org/10.1109/JESTPE.2025.3535570
• Public URL: https://nottingham-repository.worktribe.com/output/44826150
• Publisher URL: https://ieeexplore.ieee.org/document/10857356