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Frequency Up-convert Energy Harvester for Automobiles
Mengda Liu,Rencheng Zheng,Kimihiko Nakano 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.춘계 No.-
In the last decade, vibration energy harvesting as a green energy source has received significant attention. Hence, this study concentrates on a piezoelectric-based low frequency vibration energy harvester using frequency up-conversion techniques for automobile applications. Magnetic force is used to induce impulses to excite the beam, and the related dynamic equations are derived. Owe to the attraction of the magnets, a two-stage vibration occurs during the experimental study, which can be acted as an enhancing method for low frequency vibration energy harvesting. Numerical simulations and experiments have been carried out to validate that the proposed system can up-convert frequency to harvest more power.