Power Transfer Capacity Improvement of AUV IPT Systems via Impedance Transformation

Autonomous underwater vehicles (AUVs) are extensively utilized for underwater resource exploration, requiring inductive power transfer (IPT) systems with large output power to achieve quick charging. However, underwater positioning errors result in significant variations in the coupling coefficient of the IPT system. Moreover, AUVs employ diverse battery types and voltages, exacerbating the issue of decreased transferred power when the coupling coefficient and battery voltage are low, thereby prolonging the AUVs’ charging time. To address this challenge, this article proposes an impedance transformation method based on a π-network to improve power transfer capacity, which can also enhance the system efficiency under low battery voltage conditions. First, this article presents the proposed topology and analyzes its characteristics. Subsequently, the eddy current losses (ECLs), zero-voltage switching (ZVS) condition, the parameters design of the π-network, and the power losses of the system are derived. Finally, a 5-kW prototype with a maximum dc-dc efficiency of 93.1% is built to validate the effectiveness of the proposed topology.

• Record URL:
  • https://doi.org/10.1109/TTE.2024.3522392
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/23327782
• Supplemental Notes:
  • Copyright © 2025, IEEE.
• Authors:
  • Li, Huang
  • 0000-0002-6098-3403
  • Liu, Xin
  • 0000-0003-0405-1406
  • Gao, Fei
  • 0000-0003-2496-3701
  • Zhang, Yun
  • 0000-0003-3483-767X
  • Cheng, Zhengshun
  • 0000-0001-7142-1425
  • Tang, Houjun
• Publication Date: 2025-4

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 7040-7053
• Serial:
  • IEEE Transactions on Transportation Electrification
  • Volume: 11
  • Issue Number: 2
  • Publisher: Institute of Electrical and Electronics Engineers (IEEE)
  • ISSN: 2332-7782
  • Serial URL: http://ieeexplore.ieee.org/servlet/opac?punumber=6687316

Subject/Index Terms

• TRT Terms: Electrical impedance; Power loss; Topology; Unmanned underwater vehicles; Voltage; Wireless charging
• Subject Areas: Data and Information Technology; Energy; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 01961284
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 18 2025 3:10PM