Design, modeling and experimental investigation of a magnetically coupled flextensional rotation energy harvester

摘要: Energy can be harvested from rotational motion for powering wireless autonomous electronic devices. In this paper, a novel magnetically coupled flextensional rotation energy harvester (MF-REH) is designed, with the advantages of high equivalent piezoelectric constant and reliability. The dynamical model developed to describe electromechanical transition. Effects design parameters on harvesting are analyzed. Simulations experiments carried out evaluate performances harvesters various configurations under different rotating speeds. experimental results verify that mathematical used accurately characterize MF-REHs configurations, in conditions excitation. indicate more excitation magnets smaller distance significantly increase energy. For one transducer two which produce repulsive forces, maximum instantaneous power 3.1 mW average 0.22 at 1000 rpm.