Reconfigurable Wireless Power Transfer System with High Misalignment Tolerance Using Coaxial Antipodal Dual DD Coils for AUV Charging Applications
Wireless power transfer (WPT) systems for autonomous underwater vehicles (AUVs) are gaining traction in marine exploration due to their operational convenience, safety, and flexibility. Nevertheless, disturbances from ocean currents and marine organisms frequently induce rotational, axial, and air-g...
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| Format: | Article |
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MDPI AG
2025-08-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/18/15/4148 |
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| author | Yonglu Liu Mingxing Xiong Qingxuan Zhang Fengshuo Yang Yu Lan Jinhai Jiang Kai Song |
| author_facet | Yonglu Liu Mingxing Xiong Qingxuan Zhang Fengshuo Yang Yu Lan Jinhai Jiang Kai Song |
| author_sort | Yonglu Liu |
| collection | DOAJ |
| description | Wireless power transfer (WPT) systems for autonomous underwater vehicles (AUVs) are gaining traction in marine exploration due to their operational convenience, safety, and flexibility. Nevertheless, disturbances from ocean currents and marine organisms frequently induce rotational, axial, and air-gap misalignments, significantly degrading the output power stability. To mitigate this issue, this paper proposes a novel reconfigurable WPT system utilizing coaxial antipodal dual DD (CAD-DD) coils, which strategically switches between a detuned S-LCC topology and a detuned S-S topology at a fixed operating frequency. By characterizing the output power versus the coupling coefficient (<i>P</i>-<i>k</i>) profiles under both reconfiguration modes, a parameter design methodology is developed to ensure stable power delivery across wide coupling variations. Experimental validation using a 1.2 kW AUV charging prototype demonstrates remarkable tolerance to misalignment: ±30° rotation, ±120 mm axial displacement, and 20–50 mm air-gap variation. Within this range, the output power fluctuation is confined to within 5%, while the system efficiency exceeds 85% consistently, peaking at 91.56%. |
| format | Article |
| id | doaj-art-b0417be5e09a4fa6bc88505bf9fff69d |
| institution | Kabale University |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-b0417be5e09a4fa6bc88505bf9fff69d2025-08-20T04:00:54ZengMDPI AGEnergies1996-10732025-08-011815414810.3390/en18154148Reconfigurable Wireless Power Transfer System with High Misalignment Tolerance Using Coaxial Antipodal Dual DD Coils for AUV Charging ApplicationsYonglu Liu0Mingxing Xiong1Qingxuan Zhang2Fengshuo Yang3Yu Lan4Jinhai Jiang5Kai Song6School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, ChinaWireless power transfer (WPT) systems for autonomous underwater vehicles (AUVs) are gaining traction in marine exploration due to their operational convenience, safety, and flexibility. Nevertheless, disturbances from ocean currents and marine organisms frequently induce rotational, axial, and air-gap misalignments, significantly degrading the output power stability. To mitigate this issue, this paper proposes a novel reconfigurable WPT system utilizing coaxial antipodal dual DD (CAD-DD) coils, which strategically switches between a detuned S-LCC topology and a detuned S-S topology at a fixed operating frequency. By characterizing the output power versus the coupling coefficient (<i>P</i>-<i>k</i>) profiles under both reconfiguration modes, a parameter design methodology is developed to ensure stable power delivery across wide coupling variations. Experimental validation using a 1.2 kW AUV charging prototype demonstrates remarkable tolerance to misalignment: ±30° rotation, ±120 mm axial displacement, and 20–50 mm air-gap variation. Within this range, the output power fluctuation is confined to within 5%, while the system efficiency exceeds 85% consistently, peaking at 91.56%.https://www.mdpi.com/1996-1073/18/15/4148wireless power transfer (WPT)autonomous underwater vehicle (AUV)coaxial antipodal dual DD (CAD-DD)reconfigurable topologymisalignment tolerance |
| spellingShingle | Yonglu Liu Mingxing Xiong Qingxuan Zhang Fengshuo Yang Yu Lan Jinhai Jiang Kai Song Reconfigurable Wireless Power Transfer System with High Misalignment Tolerance Using Coaxial Antipodal Dual DD Coils for AUV Charging Applications Energies wireless power transfer (WPT) autonomous underwater vehicle (AUV) coaxial antipodal dual DD (CAD-DD) reconfigurable topology misalignment tolerance |
| title | Reconfigurable Wireless Power Transfer System with High Misalignment Tolerance Using Coaxial Antipodal Dual DD Coils for AUV Charging Applications |
| title_full | Reconfigurable Wireless Power Transfer System with High Misalignment Tolerance Using Coaxial Antipodal Dual DD Coils for AUV Charging Applications |
| title_fullStr | Reconfigurable Wireless Power Transfer System with High Misalignment Tolerance Using Coaxial Antipodal Dual DD Coils for AUV Charging Applications |
| title_full_unstemmed | Reconfigurable Wireless Power Transfer System with High Misalignment Tolerance Using Coaxial Antipodal Dual DD Coils for AUV Charging Applications |
| title_short | Reconfigurable Wireless Power Transfer System with High Misalignment Tolerance Using Coaxial Antipodal Dual DD Coils for AUV Charging Applications |
| title_sort | reconfigurable wireless power transfer system with high misalignment tolerance using coaxial antipodal dual dd coils for auv charging applications |
| topic | wireless power transfer (WPT) autonomous underwater vehicle (AUV) coaxial antipodal dual DD (CAD-DD) reconfigurable topology misalignment tolerance |
| url | https://www.mdpi.com/1996-1073/18/15/4148 |
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