TY - JOUR
T1 - A multi-frequency vibration-based MEMS electromagnetic energy harvesting device
AU - Liu, Huicong
AU - Qian, You
AU - Lee, Chengkuo
PY - 2013
Y1 - 2013
N2 - A multi-frequency vibration-based MEMS electromagnetic energy harvesting (EH) device has been presented, fabricated and characterized in this paper. It consists of a permanent magnet and a circular suspension structure on a MEMS EH chip. By emulating the magnetic field of a cylinder magnet, the gap distance between the magnet and EH chip is optimized to be zero for achieving larger magnetic flux change and higher output performance. From the experimental results, the vibration energy can be harvested at three excitation frequencies of 840, 1070 and 1490 Hz, which corresponds to the out-of-plane (mode I), torsion (mode II/III) and in-plane (mode IV/V) vibrations of the EH device, respectively. The maximum power densities at these three frequencies are 0.157, 0.014 and 0.117 μW/cm3, respectively, for a matched load resistance of 626 Ω and an input acceleration of 1.0 g. The feasibility study results show promising application potentials for harvesting energy from vibrations of multi-frequency.
AB - A multi-frequency vibration-based MEMS electromagnetic energy harvesting (EH) device has been presented, fabricated and characterized in this paper. It consists of a permanent magnet and a circular suspension structure on a MEMS EH chip. By emulating the magnetic field of a cylinder magnet, the gap distance between the magnet and EH chip is optimized to be zero for achieving larger magnetic flux change and higher output performance. From the experimental results, the vibration energy can be harvested at three excitation frequencies of 840, 1070 and 1490 Hz, which corresponds to the out-of-plane (mode I), torsion (mode II/III) and in-plane (mode IV/V) vibrations of the EH device, respectively. The maximum power densities at these three frequencies are 0.157, 0.014 and 0.117 μW/cm3, respectively, for a matched load resistance of 626 Ω and an input acceleration of 1.0 g. The feasibility study results show promising application potentials for harvesting energy from vibrations of multi-frequency.
KW - Electromagnetic
KW - Energy harvesting device
KW - Microelectromechanical systems (MEMS)
KW - Multi-frequency
UR - https://www.scopus.com/pages/publications/84887096368
U2 - 10.1016/j.sna.2013.09.015
DO - 10.1016/j.sna.2013.09.015
M3 - 文章
AN - SCOPUS:84887096368
SN - 0924-4247
VL - 204
SP - 37
EP - 43
JO - Sensors and Actuators A: Physical
JF - Sensors and Actuators A: Physical
ER -