posted on 2021-10-11, 08:57authored byHailing Fu, Yuan Zhang, Mengzhou Liu, Yong Qin, Eric M. Yeatman
A bistable vibration energy harvester for rail transport is proposed and developed to harness low-frequency train vibrations for self-powered condition monitoring. The operational vibration data collected from a train is analyzed to identify the design requirements. A free-sliding magnet is placed in a tube with two fixed magnets and limit springs to provide two stable positions for the movable magnet. This bistable behavior enhances the energy harvesting performance and operational bandwidth. A prototype was fabricated and tested using conditions similar to the real train operational conditions. A broad operation bandwidth (20 - 40 Hz) was obtained due to bi-stability. A peak output power of 1.1 mW was measured at 30 Hz and 6g with a 600 \Omega resistive load.
Funding
International Exchanges programme (IEC\NSFC\181655) funded by the Royal Society, UK and the National Natural Science Foundation of China
History
School
Mechanical, Electrical and Manufacturing Engineering
Published in
2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)
Pages
140 - 143
Source
21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)
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