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A Silicon MEMS EM vibration energy harvester

Author(s)
Yang, Ying-Ching Eric; Radhakrishna, Ujwal; Ward, D.; Chandrakasan, Anantha P; Lang, Jeffrey H.
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Creative Commons Attribution 3.0 unported license https://creativecommons.org/licenses/by/3.0/
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Abstract
This paper presents an optimized silicon-MEMS electromagnetic vibration energy harvester suitable for applications such as machine health monitoring. The harvester comprises a DRIE-etched silicon suspension, and pick-and-place N42 NdBFe magnets and copper coils, housed in a 3D-printed package. The harvester is designed to operate near 50 Hz with 0.5-1 g vibrations using a long-stroke suspension. Multi-domain harvester optimization results in an open-circuit voltage of 1.7 V, a matched-load power output of 2.2 mW, and a matched-load power-output density of 1.23 mW/cm3 at 1.1 g with a resonance frequency of 76.3 Hz.
Date issued
2019-11
URI
https://hdl.handle.net/1721.1/125618
Department
Massachusetts Institute of Technology. Research Laboratory of Electronics; Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Journal
Journal of Physics: Conference Series
Publisher
IOP Publishing
Citation
Yang, Y. "A Silicon MEMS EM vibration energy harvester." Journal of Physics: Conference Series, 1407 (November 2019). © Published under license by IOP Publishing Ltd.
Version: Final published version
ISSN
1742-6588
1742-6596

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