Turkyilmaz, S.Zorlu, O.Muhtaroglu, A.Kulah, H.Endüstri Mühendisliği2020-04-172020-04-172011Turkyilmaz, S...et al. (2011). "An Electromagnetic Micro-Power Generator for Low Frequency Vibrations with Tunable Resonance", Eurosensors XXV, Vol. 25.1877-7058https://doi.org/10.1016/j.proeng.2011.12.180Zorlu, Ozge/0000-0002-9570-0434; Kulah, Haluk/0000-0003-1331-4474; Muhtaroglu, Ali/0000-0001-8986-2587This 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. (C) 2011 Published by Elsevier Ltd.eninfo:eu-repo/semantics/openAccessEnergy HarvestingElectromagnetic Power GenerationFrequency-Up ConversionTunable Resonance FrequencyConference Object2510.1016/j.proeng.2011.12.1802-s2.0-84857167892WOS:000300512400177N/AN/A