Abstract
We propose energy- harvesting device using an iron- gallium alloy (Fe-Ga), which is capable of generating electrical energy from ambient vibrations. The device consists of parallel beams structure of yoke and Fe-Ga plate wound with coils, and a bias magnet. A bending force applied at the tip of the device yields a flux change of Fe-Ga plate, which the time variations generates a voltage on the wound coils. In this paper, power generation characteristic of high frequency mode is investigated. The experimental results and modal analysis clarified that high power generation is possible if the uniform bending deformation is occurred in the parallel beam structure in high frequency resonance.
