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Design and Optimization of Novel Solenoid Magnetic Coupler for Electric Boats Wireless Charging
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Wei WANG1, Shuo WANG1, Xiaofei LÜ2, Zhenlan DOU3
Journal of Power Supply | 2025, 23(6) : 247 - 257
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Journal of Power Supply | 2025, 23(6): 247-257
• Wireless Power Transfer •
Design and Optimization of Novel Solenoid Magnetic Coupler for Electric Boats Wireless Charging
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Wei WANG1, Shuo WANG1, Xiaofei LÜ2, Zhenlan DOU3
Affiliations
  • 1.School of Electrical & Automation Engineering, Nanjing Normal University, Nanjing 210023, China
  • 2.State Grid Electric Power Research Institute, NARI Group Corporation, Nanjing 211106, China
  • 3.State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, China
Published: 2025-10-30 doi: 10.13234/j.issn.2095-2805.2025.6.247
Outline
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The wireless charging technology for electric boats charging applications has gradually attracted attention. Due to the long wireless charging transmission distance of electric boats, the coupling coefficient and anti-misalignment capability of a magnetic coupler will decrease sharply with an increase in the transmission distance, thus reducing the transmission efficiency and output power. A novel solenoid magnetic coupler is proposed, and the finite element simulation models of magnetic couplers with different structures are built to compare their performance. In addition, the proposed solenoid magnetic coupler is optimized, and the corresponding magnetic shielding device is configured. Compared with those of the traditional solenoid magnetic coupler, the use of magnetic core and Litz wires of the novel solenoid magnetic coupler are reduced by 32% and 38%, respectively, thus effectively improving its coupling coefficient and anti-misalignment capability. Finally, a set of wireless charging prototype was built, and the transmission efficiency can reach 88%. The experimental results were consistent with the simulation results.

Wireless charging  /  solenoid  /  finite element simulation  /  optimization design
王维, 王硕, 吕晓飞, 窦真兰. 电动船舶无线充电新型螺线管磁耦合机构设计与优化. 电源学报, 2025 , 23 (6) : 247 -257 . DOI: 10.13234/j.issn.2095-2805.2025.6.247
Wei WANG, Shuo WANG, Xiaofei LÜ, Zhenlan DOU. Design and Optimization of Novel Solenoid Magnetic Coupler for Electric Boats Wireless Charging[J]. Journal of Power Supply, 2025 , 23 (6) : 247 -257 . DOI: 10.13234/j.issn.2095-2805.2025.6.247
Funding
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  • Science and Technology Project of SGCC(52094021N00R)
Appendix
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Year 2025 volume 23 Issue 6
39
3
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Article Info
doi: 10.13234/j.issn.2095-2805.2025.6.247
  • Receive Date：2022-12-13
  • Online Date：2026-10-26
  • Published：2025-10-30
Article Data
Affiliations
History
  • Received：2022-12-13
  • Revised：2023-03-10
  • Accepted：2023-03-21
Funding
Science and Technology Project of SGCC(52094021N00R)
Affiliations
    1.School of Electrical & Automation Engineering, Nanjing Normal University, Nanjing 210023, China
    2.State Grid Electric Power Research Institute, NARI Group Corporation, Nanjing 211106, China
    3.State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, China
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表12种不同金属材料的力学参数
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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