التفاصيل البيبلوغرافية
| العنوان: |
Electromagnetic Linear Vibration Energy Harvester Using Sliding Permanent Magnet Array and Ferrofluid as a Lubricant. |
| المؤلفون: |
Song Hee Chae, Suna Ju, Yunhee Choi, Ye-Eun Chi, Chang-Hyeon Ji |
| المصدر: |
Micromachines; Oct2017, Vol. 8 Issue 10, p288, 14p |
| مصطلحات موضوعية: |
ELECTROMAGNETISM, LINEAR vibration, MAGNETIC fluids |
| مستخلص: |
We present an electromagnetic linear vibration energy harvester with an array of rectangular permanent magnets as a springless proof mass. Instead of supporting the magnet assembly with spring element, ferrofluid has been used as a lubricating material. When external vibration is applied laterally to the harvester, magnet assembly slides back and forth on the channel with reduced friction and wear due to ferrofluid, which significantly improves the long-term reliability of the device. Electric power is generated across an array of copper windings formed at the bottom of the aluminum housing. A proof-of-concept harvester has been fabricated and tested with a vibration exciter at various input frequencies and accelerations. For the device where 5 µL of ferrofluid was used for lubrication, maximum output power of 493 µW has been generated, which was 4.37% higher than that without ferrofluid. Long-term reliability improvement due to ferrofluid lubrication has also been verified. For the device with ferrofluid, 1.02% decrease of output power has been observed, in contrast to 59.73% decrease of output power without ferrofluid after 93,600 cycles. [ABSTRACT FROM AUTHOR] |
|
Copyright of Micromachines is the property of MDPI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder