Conformal Transformation Analysis of Capacitive Wireless Charging
This paper studies the capacitive coupling in a capacitive power transfer (CPT) system designed for charging applications. It proposes mathematical models using the conformal transformation for calculating air-gapped and underwater capacitance and verifies the proposed models using COMSOL multiphysi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2022-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9906073/ |
| _version_ | 1797996568906825728 |
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| author | Hussein Mahdi Bjarte Hoff Pal Gunnar Ellingsen Trond Ostrem |
| author_facet | Hussein Mahdi Bjarte Hoff Pal Gunnar Ellingsen Trond Ostrem |
| author_sort | Hussein Mahdi |
| collection | DOAJ |
| description | This paper studies the capacitive coupling in a capacitive power transfer (CPT) system designed for charging applications. It proposes mathematical models using the conformal transformation for calculating air-gapped and underwater capacitance and verifies the proposed models using COMSOL multiphysics and measurements. The measured results show that we can achieve nano-farad capacitance ranges if we submerge the capacitor in seawater. The seawater’s capacitance slightly changes when we increase the gap distance or the operating frequency. As the under seawater CPT system can be an attractive option for loosely-coupled charging applications, we further examine the system by focusing on the cross-coupling effects. The results show that the cross-coupling between the plate degrades the system’s power transfer capability and efficiency. With negligible cross-coupling effects, the system gives 129 W output power at an efficiency of 81.2%. |
| first_indexed | 2024-04-11T10:19:25Z |
| format | Article |
| id | doaj.art-5c9467d2312240d486b7257944070302 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-11T10:19:25Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-5c9467d2312240d486b72579440703022022-12-22T04:29:48ZengIEEEIEEE Access2169-35362022-01-011010562110563010.1109/ACCESS.2022.32109609906073Conformal Transformation Analysis of Capacitive Wireless ChargingHussein Mahdi0https://orcid.org/0000-0001-8161-5354Bjarte Hoff1https://orcid.org/0000-0001-7328-3505Pal Gunnar Ellingsen2https://orcid.org/0000-0002-3331-5581Trond Ostrem3Department of Electrical Engineering, UiT–The Arctic University of Norway, Narvik, NorwayDepartment of Electrical Engineering, UiT–The Arctic University of Norway, Narvik, NorwayDepartment of Electrical Engineering, UiT–The Arctic University of Norway, Narvik, NorwayDepartment of Electrical Engineering, UiT–The Arctic University of Norway, Narvik, NorwayThis paper studies the capacitive coupling in a capacitive power transfer (CPT) system designed for charging applications. It proposes mathematical models using the conformal transformation for calculating air-gapped and underwater capacitance and verifies the proposed models using COMSOL multiphysics and measurements. The measured results show that we can achieve nano-farad capacitance ranges if we submerge the capacitor in seawater. The seawater’s capacitance slightly changes when we increase the gap distance or the operating frequency. As the under seawater CPT system can be an attractive option for loosely-coupled charging applications, we further examine the system by focusing on the cross-coupling effects. The results show that the cross-coupling between the plate degrades the system’s power transfer capability and efficiency. With negligible cross-coupling effects, the system gives 129 W output power at an efficiency of 81.2%.https://ieeexplore.ieee.org/document/9906073/Wireless power transmissioncapacitive power transfercouplingsenergy efficiencyconformal mappingnetwork theory |
| spellingShingle | Hussein Mahdi Bjarte Hoff Pal Gunnar Ellingsen Trond Ostrem Conformal Transformation Analysis of Capacitive Wireless Charging IEEE Access Wireless power transmission capacitive power transfer couplings energy efficiency conformal mapping network theory |
| title | Conformal Transformation Analysis of Capacitive Wireless Charging |
| title_full | Conformal Transformation Analysis of Capacitive Wireless Charging |
| title_fullStr | Conformal Transformation Analysis of Capacitive Wireless Charging |
| title_full_unstemmed | Conformal Transformation Analysis of Capacitive Wireless Charging |
| title_short | Conformal Transformation Analysis of Capacitive Wireless Charging |
| title_sort | conformal transformation analysis of capacitive wireless charging |
| topic | Wireless power transmission capacitive power transfer couplings energy efficiency conformal mapping network theory |
| url | https://ieeexplore.ieee.org/document/9906073/ |
| work_keys_str_mv | AT husseinmahdi conformaltransformationanalysisofcapacitivewirelesscharging AT bjartehoff conformaltransformationanalysisofcapacitivewirelesscharging AT palgunnarellingsen conformaltransformationanalysisofcapacitivewirelesscharging AT trondostrem conformaltransformationanalysisofcapacitivewirelesscharging |