Low-Frequency Electromagnetic Energy Harvesting from Highway Bridge Vibrations | Journal of Bridge Engineering | Vol 25, No 8

Low-Frequency Electromagnetic Energy Harvesting from Highway Bridge Vibrations | Journal of Bridge Engineering | Vol 25, No 8
This paper focuses on energy harvesting from low-frequency vibrations in bridges via an electromagnetic device. Two pre-stressed concrete highway bridges are considered as case studies. In situ vibration measurements are reported and analyzed. An electromagnetic vibration energy harvester (VEH) with a low resonant frequency (tunable around 4 Hz) has been designed. The VEH is of the cantilever type, with 12 magnets mounted on a beam and acting as an inertial mass....