An Electromagnetic Micro-Power Generator for Low Frequency Vibrations with Tunable Resonance
Procedia Engineering, ISSN: 1877-7058, Vol: 25, Page: 729-732
2011
- 8Citations
- 30Captures
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Article Description
This paper presents an electromagnetic (EM) micro-power generator with tunable resonance frequency which can harvest energy from low frequency environmental vibrations. The reported power generator up-converts low frequency environmental vibrations before mechanical-to-electrical energy conversion by utilizing two diaphragms with different resonance frequencies. Power is generated through electromagnetic induction by a magnet attached to the low frequency diaphragm, and a 50 turn, 2.1 asterisk coil, and a magnetic piece on the high frequency diaphragm. Both of the diaphragms are fixed to a common frame via rubber springs, which makes the resonance frequency of each diaphragm tunable. The fabricated prototype generates 5.2 mV and 3.21 colonW RMS power by up-converting 13 Hz, 7.5 mm peak-to-peak vibrations to 200 Hz. Tunability of the resonance frequency is experimentally verified by operating the same device at 2-30 Hz external vibrations.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S1877705811058498; http://dx.doi.org/10.1016/j.proeng.2011.12.180; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84857167892&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S1877705811058498; https://dul.usage.elsevier.com/doi/; https://api.elsevier.com/content/article/PII:S1877705811058498?httpAccept=text/xml; https://api.elsevier.com/content/article/PII:S1877705811058498?httpAccept=text/plain; https://dx.doi.org/10.1016/j.proeng.2011.12.180
Elsevier BV
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