Design and Analysis of Broadband Vibrational Energy Harvester Based on Switchable Dynamical System Using Electropermanent Magnet

This paper proposes a new broadband vibrational energy harvester (VEH) based on switchable dynamical systems using an electropermanent magnet (EPM). A broadband harvesting characteristic is evaluated by solving governing equations of the VEH numerically. The effectiveness of the proposed VEH is verified by comparing a drastic increase in a harvested power with a Joule loss due to a short-time pulsed current applied to the EPM.