| Presentation | 2016-01-28 Effect of Ground Plane to Human-Body Exposures in the vicinity of kHz-Band Wireless Power Transfer System Yuhei Aoki, Jerdvisanop Chakarothai, Kanako Wake, Katsumi Fujii, Takuji Arima, Soichi Watanabe, Toru Uno, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Wireless Power Transfer (WPT) systems for electric vehicle (EV) typically produce strong electromagnetic (EM) fields nearby. Therefore, it is important to evaluate human-body exposure due to EM fields from the WPT systems. We have been studying so far the exposure assessment in free space. However, the WPT systems for EV are actually positioned near the human foot. However, it is necessary to consider the effect of the ground plane in the exposure evaluation. In this study, in order to investigate the effect, we have calculated the distance characteristics of an external magnetic field strength and internal electric field strength in human bodies when WPT system is put on the PEC ground plane. As a result, it was indicated that the external magnetic field strength and the internal electric field strength for the case of the PEC ground plane may be as large as 142 % and 130 % of those for the free space at the maximum, respectively. In addition we have determined a coupling factor, as described in the IEC standard as a ratio of the external magnetic field strength to the internal electric field strength. As a result, the coupling factor in free space was larger than that for the PEC ground-plane case when the compliance distance is equal to 0.4 m. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Wireless power transfer / exposure assessment / coupling factor / ground plane / equivalent wave source |
| Paper # | EMCJ2015-113 |
| Date of Issue | 2016-01-21 (EMCJ) |
| Conference Information | |
| Committee | EMCJ / WPT |
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| Conference Date | 2016/1/28(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kumamoto National Colle. Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Communication, Wireless Power Transmission, EMC |
| Chair | Hideaki Sone(Tohoku Univ.) / Naoki Shinohara(Kyoto Univ.) |
| Vice Chair | Osami Wada(Kyoto Univ.) |
| Secretary | Osami Wada(Okayama Univ.) / (Hitachi) |
| Assistant | Atsuhiro Takahashi(Toyota Central R&D Labs.) / Yoshiki Kayano(Akita Univ.) / Yusaku Katsube(Hitachi) / Takashi Hikagae(Hokkaido Univ.) / Tsunayuki Yamamoto(Yamaguchi Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Electromagnetic Compatibility / Technical Committee on Wireless Power Transfer |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effect of Ground Plane to Human-Body Exposures in the vicinity of kHz-Band Wireless Power Transfer System |
| Sub Title (in English) | |
| Keyword(1) | Wireless power transfer |
| Keyword(2) | exposure assessment |
| Keyword(3) | coupling factor |
| Keyword(4) | ground plane |
| Keyword(5) | equivalent wave source |
| 1st Author's Name | Yuhei Aoki |
| 1st Author's Affiliation | Tokyo University of Agriculture and Technology(TUAT) |
| 2nd Author's Name | Jerdvisanop Chakarothai |
| 2nd Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 3rd Author's Name | Kanako Wake |
| 3rd Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 4th Author's Name | Katsumi Fujii |
| 4th Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 5th Author's Name | Takuji Arima |
| 5th Author's Affiliation | Tokyo University of Agriculture and Technology(TUAT) |
| 6th Author's Name | Soichi Watanabe |
| 6th Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 7th Author's Name | Toru Uno |
| 7th Author's Affiliation | Tokyo University of Agriculture and Technology(TUAT) |
| Date | 2016-01-28 |
| Paper # | EMCJ2015-113 |
| Volume (vol) | vol.115 |
| Number (no) | EMCJ-427 |
| Page | pp.pp.55-60(EMCJ), |
| #Pages | 6 |
| Date of Issue | 2016-01-21 (EMCJ) |