A bi-axial and wideband vibration energy harvester using magnetoelectric transducer

In vibration energy harvesting, a primary issue in these generators is that most of them can only harvest energy in one single direction of the motions. In this paper, the harvester using magnetoelectric transducer takes advantage of multi-cantilever beams to extract the vibration with multi-directions. The effects of the structure parameters on the electrical-output of the harvester are analyzed to achieve the optimal vibration energy harvesting performances. The experimental results on the performances show that, the harvester has bandwidths of 2.8Hz, 2.5Hz at two directions at the acceleration of 0.6g (with g=9.8ms^-2), respectively.