An Electromagnetic Micro-Power Generator for Low Frequency Vibrations with Tunable Resonance

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10.1016.j.proeng.2011.12.180.pdf

Date

2011-09-07

Author

Türkyılmaz, Serhan
Muhtaroglu, A.
Külah, Haluk

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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 Omega 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 mu W 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.

Subject Keywords

Energy harvesting, Electromagnetic power generation, Frequency-up conversion, Tunable resonance frequency

URI

https://hdl.handle.net/11511/40022

DOI

https://doi.org/10.1016/j.proeng.2011.12.180

Conference Name

25th Eurosensors Conference

Collections

Department of Chemistry, Conference / Seminar

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Citation Formats

S. Türkyılmaz, A. Muhtaroglu, and H. Külah, “An Electromagnetic Micro-Power Generator for Low Frequency Vibrations with Tunable Resonance,” Athens, GREECE, 2011, vol. 25, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40022.