2022 Fiscal Year Final Research Report
Long-range wireless power transfer with a sheet-like transmission medium
Project/Area Number |
21K14155
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 21020:Communication and network engineering-related
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Research Institution | The University of Tokyo |
Principal Investigator |
Masuda Yuichi 東京大学, 大学院新領域創成科学研究科, 特任研究員 (20856231)
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Project Period (FY) |
2021-04-01 – 2023-03-31
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Keywords | 二次元電力伝送 / 磁場結合方式 |
Outline of Final Research Achievements |
In this study, we developed a new structure of transmission medium that enables a wider range of wireless power transfer and simpler installation than in previous one. This technology is based on the two-dimensional communication in which electromagnetic waves are localized on a sheet-like transmission medium for power/signal transmission. In our previous study, the practical power transfer efficiency and safety was confirmed by using a sheet-like transmission medium of approximately 10 m in length. On the othe hands, (1) the power receiving terminal was large (1 x 0.5 m) and (2) the coupling was mainly based on electric fields, making it susceptible to water and unsuitable for outdoor use. By reviewing the structure of the power-feeding sheet, we succeeded in reducing the size of the power-receiving terminal to the palm of the hand while maintaining the power-feeding performance, and in transmitting power via a magnetic field, which is less susceptible to water.
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Free Research Field |
無線電力伝送
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Academic Significance and Societal Importance of the Research Achievements |
本研究成果は,シート状の伝送媒体に電磁波を局在させ,安全で広範囲な無線電力伝送を実現する,既存のワイヤレス充電と比較し得意な電力伝送方式である点で学術的意義を持つ.シートの薄さを活かして机や床面などに無理なく組み込める高い敷設性を実現しつつ,シート内部にほとんどの電磁エネルギーを閉じ込めることで,給電範囲と安全性を両立させることができる.受電端末の位置決め不要な本技術は,脱炭素や労働力不足解消のために普及が望まれる電動マイクロモビリティやサービスロボットの普及を加速させる電力インフラとして期待できる点が社会的意義である.
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