Low Frequency Vibration Energy Harvester Using Spherical Permanent Magnet with Non-uniform Mass Distribution

Autor:	Y. Choi, S. Ju, S. M. Park, C. H. Ji, S. Jun, Song Hee Chae, S. Lee, H. W. Lee
Rok vydání:	2013
Předmět:	History Ferrofluid Materials science Mass distribution business.industry Acoustics Electrical engineering Electromagnetic radiation Computer Science Applications Education Power (physics) Vibration Magnet Proof mass business Voltage
Zdroj:	Journal of Physics: Conference Series. 476:012123
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/476/1/012123
Popis:	We present a non-resonant vibration energy harvesting device using springless spherical permanent magnet with non-uniform mass distribution as a proof mass. The magnet has its center-of-mass below the geometrical center, which generates a roly-poly-like motion in response to external vibrations. Two different types of magnet assemblies with different center-of-mass position have been fabricated and tested. Using the roly-poly-like magnets, proof-of-concept electromagnetic energy harvesters have been fabricated and tested. Moreover, effect of ferrofluid as a lubricant has been tested with the fabricated energy harvester. Maximum open-circuit voltage of 154.4mV and output power of 4.53μW have been obtained at 3g vibration at 12Hz with the fabricated device.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c27762e40bb805788a3140addd577825 https://doi.org/10.1088/1742-6596/476/1/012123 Zobrazit plný text záznamu