| Presentation | 2017-11-21 Design of coupler for high efficiency wireless power transfer under fresh water with electric coupling Yasumasa Naka, Kosuke Murai, Masaya Tamura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This report describes a design method of the capacitive coupler achieving the high efficiency underwater wireless power transfer. First, we calculate the Q factor of fresh water by utilizing a dielectric constant, various electrical conductivities and an optimal frequency with maximal value of maximum available efficiency. Focusing on the calculated Q factor, we clarify the relationship between electrical conductivities and maximum available efficiency. Then, we describe the improvement method in coupling coefficient k. Finally, the maximum available efficiency of 80.2% is achieved at the transfer distance of 20 mm by using the fabricated coupler. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Underwater wireless power transfer / electric coupling / capacitive coupling / maximum available efficiency / kQ product / electrical conductivity |
| Paper # | WPT2017-49 |
| Date of Issue | 2017-11-14 (WPT) |
| Conference Information | |
| Committee | WPT / EMCJ |
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| Conference Date | 2017/11/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless Power Transmission, Electronic Packaging, EMC |
| Chair | Chenq Kiyou(Tohoku Univ.) / Osami Wada(Kyoto Univ.) |
| Vice Chair | Tomohiro Seki(Nihon Univ.) / Kensei Oh(Nagoya Inst. of Tech.) |
| Secretary | Tomohiro Seki(Nagoya Inst. of Tech.) / Kensei Oh(Hokkaido Univ.) |
| Assistant | Takehiro Imura(Univ. of Tokyo) / Masahiro Hanazawa(UL Japan) / Shinichiro Yamamoto(Univ. of Hyogo) / Chie Sasaki(Panasonic) / Shinobu Nagasawa(Mitsubishi Electric) |
| Paper Information | |
| Registration To | Technical Committee on Wireless Power Transfer / Technical Committee on Electromagnetic Compatibility |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design of coupler for high efficiency wireless power transfer under fresh water with electric coupling |
| Sub Title (in English) | |
| Keyword(1) | Underwater wireless power transfer |
| Keyword(2) | electric coupling |
| Keyword(3) | capacitive coupling |
| Keyword(4) | maximum available efficiency |
| Keyword(5) | kQ product |
| Keyword(6) | electrical conductivity |
| 1st Author's Name | Yasumasa Naka |
| 1st Author's Affiliation | Toyohashi University of Technology(Toyohashi Univ. ot Tech.) |
| 2nd Author's Name | Kosuke Murai |
| 2nd Author's Affiliation | Toyohashi University of Technology(Toyohashi Univ. ot Tech.) |
| 3rd Author's Name | Masaya Tamura |
| 3rd Author's Affiliation | Toyohashi University of Technology(Toyohashi Univ. ot Tech.) |
| Date | 2017-11-21 |
| Paper # | WPT2017-49 |
| Volume (vol) | vol.117 |
| Number (no) | WPT-318 |
| Page | pp.pp.27-31(WPT), |
| #Pages | 5 |
| Date of Issue | 2017-11-14 (WPT) |