A Symmetrical Cross Double-D Coil with Improved Misalignment Tolerance for WPT Systems
Inductive Wireless Power Transfer (WPT) technologies are advancing significantly in the electric vehicle (EV) charging applications. Misalignment between transmitting and receiving coils can considerably affect power transmission efficiency in WPT systems. Prior research involved power electronics a...
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| Language: | English |
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MDPI AG
2025-07-01
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| Series: | World Electric Vehicle Journal |
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| Online Access: | https://www.mdpi.com/2032-6653/16/7/405 |
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| author | Ashwini Rathod Satish M. Mahajan Taiye Owu |
| author_facet | Ashwini Rathod Satish M. Mahajan Taiye Owu |
| author_sort | Ashwini Rathod |
| collection | DOAJ |
| description | Inductive Wireless Power Transfer (WPT) technologies are advancing significantly in the electric vehicle (EV) charging applications. Misalignment between transmitting and receiving coils can considerably affect power transmission efficiency in WPT systems. Prior research involved power electronics as well as electromagnetic couplers. This work focuses on the coil design aspect of electromagnetic couplers. A relatively new concept of Symmetrical Cross Double-D (SCDD) type of the coil design is introduced specifically to maximize tolerance to misalignment while sustaining significant amount of power transferred. Mutual inductance was determined for the perfect alignment and misalignment positions of the SCDD coils. Mutual inductance obtained from the simulation was validated from the experimental measurements. The SCDD electromagnetic coupler demonstrated almost 2.5 times superior tolerance to misalignment of coils compared to the conventional circular coupler while maintaining at least 78% of maximum power transfer even at a lateral misalignment of 40 mm. |
| format | Article |
| id | doaj-art-de8d2a2216de491c8c1424ac1b7d90e7 |
| institution | DOAJ |
| issn | 2032-6653 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | World Electric Vehicle Journal |
| spelling | doaj-art-de8d2a2216de491c8c1424ac1b7d90e72025-08-20T03:13:58ZengMDPI AGWorld Electric Vehicle Journal2032-66532025-07-0116740510.3390/wevj16070405A Symmetrical Cross Double-D Coil with Improved Misalignment Tolerance for WPT SystemsAshwini Rathod0Satish M. Mahajan1Taiye Owu2Department of Electrical Engineering, Tennessee Tech University, Cookeville, TN 38505, USACenter for Energy System Research, Tennessee Tech University, Cookeville, TN 38505, USABonitron, Inc., Nashville, TN 37211, USAInductive Wireless Power Transfer (WPT) technologies are advancing significantly in the electric vehicle (EV) charging applications. Misalignment between transmitting and receiving coils can considerably affect power transmission efficiency in WPT systems. Prior research involved power electronics as well as electromagnetic couplers. This work focuses on the coil design aspect of electromagnetic couplers. A relatively new concept of Symmetrical Cross Double-D (SCDD) type of the coil design is introduced specifically to maximize tolerance to misalignment while sustaining significant amount of power transferred. Mutual inductance was determined for the perfect alignment and misalignment positions of the SCDD coils. Mutual inductance obtained from the simulation was validated from the experimental measurements. The SCDD electromagnetic coupler demonstrated almost 2.5 times superior tolerance to misalignment of coils compared to the conventional circular coupler while maintaining at least 78% of maximum power transfer even at a lateral misalignment of 40 mm.https://www.mdpi.com/2032-6653/16/7/405wireless inductive power transferelectric vehicles (EVs) chargingSymmetrical Cross Double-D coilmisalignment |
| spellingShingle | Ashwini Rathod Satish M. Mahajan Taiye Owu A Symmetrical Cross Double-D Coil with Improved Misalignment Tolerance for WPT Systems World Electric Vehicle Journal wireless inductive power transfer electric vehicles (EVs) charging Symmetrical Cross Double-D coil misalignment |
| title | A Symmetrical Cross Double-D Coil with Improved Misalignment Tolerance for WPT Systems |
| title_full | A Symmetrical Cross Double-D Coil with Improved Misalignment Tolerance for WPT Systems |
| title_fullStr | A Symmetrical Cross Double-D Coil with Improved Misalignment Tolerance for WPT Systems |
| title_full_unstemmed | A Symmetrical Cross Double-D Coil with Improved Misalignment Tolerance for WPT Systems |
| title_short | A Symmetrical Cross Double-D Coil with Improved Misalignment Tolerance for WPT Systems |
| title_sort | symmetrical cross double d coil with improved misalignment tolerance for wpt systems |
| topic | wireless inductive power transfer electric vehicles (EVs) charging Symmetrical Cross Double-D coil misalignment |
| url | https://www.mdpi.com/2032-6653/16/7/405 |
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