Geometry-Based Circuit Modeling of Quasi-Static Cavity Resonators for Wireless Power Transfer
Wireless power transfer technology has seen steady advances in recent years, yet seamlessly charging devices within large volumes of space remains challenging. Although quasi-static cavity resonators have recently demonstrated safe wireless power transfer at room-scale sizes at significant power lev...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2022-01-01
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| Series: | IEEE Open Journal of Power Electronics |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9797856/ |
| _version_ | 1818219321840631808 |
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| author | Takuya Sasatani Matthew Chabalko Yoshihiro Kawahara Alanson Sample |
| author_facet | Takuya Sasatani Matthew Chabalko Yoshihiro Kawahara Alanson Sample |
| author_sort | Takuya Sasatani |
| collection | DOAJ |
| description | Wireless power transfer technology has seen steady advances in recent years, yet seamlessly charging devices within large volumes of space remains challenging. Although quasi-static cavity resonators have recently demonstrated safe wireless power transfer at room-scale sizes at significant power levels, previous work investigated this concept using coupled mode theory, lacking utility from the engineering perspective. This work presents a circuit model analysis of quasi-static cavity resonance-based wireless power transfer systems, which creates a critical conceptual bridge to the electrical engineering community and reveals factors that dominate the system performance and power transfer efficiency. A closed-form circuit model is derived from the geometrical properties of the system by analyzing the field distribution of a cylindrical cavity structure and is experimentally validated using a room-scale quasi-static cavity resonator. Finally, we demonstrate the utility of the derived circuit model through case studies for designing impedance matching circuits and optimization of the QSCR geometry. |
| first_indexed | 2024-12-12T07:37:48Z |
| format | Article |
| id | doaj.art-b82739e443da429796b5ec44c127b61a |
| institution | Directory Open Access Journal |
| issn | 2644-1314 |
| language | English |
| last_indexed | 2024-12-12T07:37:48Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Power Electronics |
| spelling | doaj.art-b82739e443da429796b5ec44c127b61a2022-12-22T00:32:53ZengIEEEIEEE Open Journal of Power Electronics2644-13142022-01-01338239010.1109/OJPEL.2022.31836009797856Geometry-Based Circuit Modeling of Quasi-Static Cavity Resonators for Wireless Power TransferTakuya Sasatani0https://orcid.org/0000-0003-2268-6106Matthew Chabalko1Yoshihiro Kawahara2https://orcid.org/0000-0002-0310-2577Alanson Sample3https://orcid.org/0000-0002-8046-0538The University of Tokyo, Bunkyo-ku, JapanDisney Research, Pittsburgh, PA, USAThe University of Tokyo, Bunkyo-ku, JapanUniversity of Michigan, Ann Arbor, MI, USAWireless power transfer technology has seen steady advances in recent years, yet seamlessly charging devices within large volumes of space remains challenging. Although quasi-static cavity resonators have recently demonstrated safe wireless power transfer at room-scale sizes at significant power levels, previous work investigated this concept using coupled mode theory, lacking utility from the engineering perspective. This work presents a circuit model analysis of quasi-static cavity resonance-based wireless power transfer systems, which creates a critical conceptual bridge to the electrical engineering community and reveals factors that dominate the system performance and power transfer efficiency. A closed-form circuit model is derived from the geometrical properties of the system by analyzing the field distribution of a cylindrical cavity structure and is experimentally validated using a room-scale quasi-static cavity resonator. Finally, we demonstrate the utility of the derived circuit model through case studies for designing impedance matching circuits and optimization of the QSCR geometry.https://ieeexplore.ieee.org/document/9797856/Circuit modelingquasi-static cavity resonatorswireless power transfer |
| spellingShingle | Takuya Sasatani Matthew Chabalko Yoshihiro Kawahara Alanson Sample Geometry-Based Circuit Modeling of Quasi-Static Cavity Resonators for Wireless Power Transfer IEEE Open Journal of Power Electronics Circuit modeling quasi-static cavity resonators wireless power transfer |
| title | Geometry-Based Circuit Modeling of Quasi-Static Cavity Resonators for Wireless Power Transfer |
| title_full | Geometry-Based Circuit Modeling of Quasi-Static Cavity Resonators for Wireless Power Transfer |
| title_fullStr | Geometry-Based Circuit Modeling of Quasi-Static Cavity Resonators for Wireless Power Transfer |
| title_full_unstemmed | Geometry-Based Circuit Modeling of Quasi-Static Cavity Resonators for Wireless Power Transfer |
| title_short | Geometry-Based Circuit Modeling of Quasi-Static Cavity Resonators for Wireless Power Transfer |
| title_sort | geometry based circuit modeling of quasi static cavity resonators for wireless power transfer |
| topic | Circuit modeling quasi-static cavity resonators wireless power transfer |
| url | https://ieeexplore.ieee.org/document/9797856/ |
| work_keys_str_mv | AT takuyasasatani geometrybasedcircuitmodelingofquasistaticcavityresonatorsforwirelesspowertransfer AT matthewchabalko geometrybasedcircuitmodelingofquasistaticcavityresonatorsforwirelesspowertransfer AT yoshihirokawahara geometrybasedcircuitmodelingofquasistaticcavityresonatorsforwirelesspowertransfer AT alansonsample geometrybasedcircuitmodelingofquasistaticcavityresonatorsforwirelesspowertransfer |