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A Split Narrow-Band Solenoid Magnetic Coupler to Improve Misalignment for 15-kW Underwater Wireless Charging
Journal article   Peer reviewed

A Split Narrow-Band Solenoid Magnetic Coupler to Improve Misalignment for 15-kW Underwater Wireless Charging

Amr Mostafa, Haonan Song, Yao Wang, Fei Lu and Hua Zhang
IEEE transactions on industrial electronics (1982), pp 1-5
06 May 2026
DOI: https://doi.org/10.1109/TIE.2026.3682354
Featured in Collection :   UN Sustainable Development Goals @ Drexel

Abstract

Autonomous underwater vehicles Coils Couplers Distance measurement Inductance Joining processes misalignment Power generation Receivers underwater charging Windings Magnetics
This article proposes a novel solenoid magnetic coupler structure for underwater charging with two achievements. First, a high-power density of 350.4 kW/m 2 is achieved in a saltwater environment. Second, a strong axial misalignment tolerance is achieved, in which a 100-mm-long receiver can maintain 76.1% of the well-aligned power with a 70-mm mismatch. The uniqueness of this design is a split-winding transmitter coupled with a narrow-band receiver with only five turns. High-power underwater experiments are conducted for validation. It achieves maximum power transfer of 15.41 kW with 95.32% DC-DC efficiency in a saltwater environment. When the axial misalignment varies within 70 mm, the output power is above 11.73 kW, and the DC-DC efficiency is maintained higher than 95.27%.

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UN Sustainable Development Goals (SDGs)

This publication has contributed to the advancement of the following goals:

#7 Affordable and Clean Energy

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Collaboration types
Domestic collaboration
Web of Science research areas
Automation & Control Systems
Engineering, Electrical & Electronic
Instruments & Instrumentation
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