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標題: Electromagnetic energy harvesting from vibrations induced by K�rm�n vortex street
作者: Wang, Dung-An
Chiu, Chun-Yuan
Pham, Huy-Tuan
關鍵字: Electromagnetic;Energy harvester;K�rm�n vortex street
Project: Mechatronics, Volume 22, Issue 6, Page(s) 746–756.
A new electromagnetic energy harvester for harnessing energy from vibration induced by K�rm�n vortex
street is proposed. It converts flow energy into electrical energy by fluid flow, vortex shedding from a
bluff body and electromagnetic induction. An analytical design method for the energy harvester is developed.
A prototype of the energy harvester is fabricated and tested. The prototype has a volume of
37.9 cm3. Experimental results show that an output peak-to-peak voltage of nearly 20 mV in average is
generated when the excitation pressure oscillates with an amplitude of 0.3 kPa and a frequency of about
62 Hz. By detecting the voltage drop across a matched load, the instantaneous power is determined as
1.77 lW under a pressure fluctuation frequency of 62 Hz and a pressure amplitude of 0.3 kPa in the
K�rm�n vortex street.
ISSN: 0957-4158
DOI: 10.1016/j.mechatronics.2012.03.005
Appears in Collections:精密工程研究所

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