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IOP PUBLISHING LTD
DOI: 10.1088/1742-6596/476/1/012013
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资金
- Ewha Womans University
- Pioneer Research Center Program through the National Research Foundation of Korea - Ministry of Science
- ICT & Future Planning [2010-0019453]
This paper presents an electromagnetic energy harvester using an array of rectangular permanent magnets as springless proof mass and ferrofluid as a lubricating material. Lateral motion of the multi-pole magnet array generates voltage across an array of copper windings formed under the aluminum channel in response to low frequency external vibrations such as human-body-induced motion. A proof-of-concept device has been fabricated and output voltage has been measured at various input frequencies and accelerations provided by a vibration exciter. Device with ferrofluid lubrication generated maximum open-circuit voltage of 0.47V at 3g vibration at 12Hz, which is 8% higher than that of the device without lubricant. Maximum output power of 71.26 mu W has been obtained at 40.8 Omega with the device with ferrofluid lubrication.
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