2019 Fiscal Year Final Research Report
Battery less electrical vehicle running on the disused snowy rail road using wireless power transmission
| Project/Area Number |
17K06452
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Communication/Network engineering
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| Research Institution | Hakodate National College of Technology |
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Principal Investigator |
Maruyama Tamami 函館工業高等専門学校, 生産システム工学科, 教授 (90735523)
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| Co-Investigator(Kenkyū-buntansha) |
中村 尚彦 函館工業高等専門学校, 生産システム工学科, 准教授 (30435383)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | ワイヤレス電力伝送 / 電界結合WPT / WPT / マイクロ波融雪 / アンテナ / メタマテリアル / 左手系 / ｋQ積 |
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| Outline of Final Research Achievements |
To achieve low cost automatic power supply during EV running using wireless power transfer (WPT) in a depopulated area with a lot of snow, we proposed to use the rail of the abandoned line as a high frequency feeder. The following three points were clarified. (i) In the electric field coupling WPT using the rail as the power transmission unit, it is effective to use the wheel of the tire as the power reception unit. (ii) Compared to the case of embedding a power supply line under a conventional road, the proposed method keeps capacitive coupling even if the position of the vehicle shifts, and therefore the characteristics are less likely to deteriorate. (iii) The influence of loss deterioration due to snow can be reduced. As a result of designing the matching circuit and the rectifier circuit to optimize the transmission efficiency, we succeeded in running the model using the scale model. In addition, we also succeeded in an experiment of WPT using a microwave snow melting device.
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| Free Research Field |
アンテナ、ワイヤレス電力伝送、メタマテリアル
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| Academic Significance and Societal Importance of the Research Achievements |
本研究は (i)ワイヤレス給電とマイクロ波加熱の二つの技術の融合と, (ii)廃線跡地を利用するだけでなく線路そのものを高周波フィーダーとして使う点が独創的あるとともに、マイクロ波加熱と土木工学、機械工学などの異分野を混合した研究であるという学術的な特色がある。このため基礎研究と基礎技術開示に重点を置き、アンテナ伝搬の丸山が機械工学の中村と研究を分担し、土木工学の専門家を研究協力者としている。本研究を発展させることにより廃線によって失われる過疎地の交通手段を確保し、地域活性化につなげられる可能性があり研究の意義は大きい。
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