Study on the Transmission Efficiency of Wireless Charging System using Asymmetrical Flat Spiral Coil
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- TACHIBANA Kunihiko
- 高知工科大学
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- OKA Koichi
- 高知工科大学
Bibliographic Information
- Other Title
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- 非対称平巻きコイルを用いた非接触給電装置における伝送効率の考察
- ヒタイショウ ヒラマキ コイル オ モチイタ ヒセッショク キュウデン ソウチ ニ オケル デンソウ コウリツ ノ コウサツ
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Description
This paper represents the research finding of wireless electric power transmission using same or different outer diameter flat spiral coil. The coupling factor, transmission power and transmission efficiency of asymmetrical coil which has same inner diameter but different turn numbers was compared with symmetrical coil which has same inner diameter and same turn numbers. In the application of wireless electric power transmission for electric assisted bicycles, small size diameter coil (less than ø10 cm) is more suitable than large size diameter coil (larger than ø50 cm), therefore, a small size coil is used. In the results, an electric power transmission by using asymmetrical coil was found the same as that of symmetrical coil. However, the distance for power transmission by asymmetrical coil was found smaller than symmetrical coil. When a secondary battery was connected with wireless power transmission as a load, the apparent resistance of secondary battery had influence on charging rate. This resistance change was used for battery charging apparatus instead of feedback control.
Journal
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- Journal of the Japan Society of Applied Electromagnetics and Mechanics
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Journal of the Japan Society of Applied Electromagnetics and Mechanics 22 (1), 41-47, 2014
The Japan Society of Applied Electromagnetics and Mechanics
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Keywords
Details 詳細情報について
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- CRID
- 1390282680482969472
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- NII Article ID
- 130004728465
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- NII Book ID
- AN10457520
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- ISSN
- 21879257
- 09194452
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- NDL BIB ID
- 025468530
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL Search
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed