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Study of a Coupled Piezo-Electromagnetic Harvester

The paper presents a study of a coupled piezoelectromagnetic harvester, consisting of a piezo-harvester and an attached to it electromagnetic harvester. Modeling in ANSYS has been performed, by means of which the horizontal deviation of the mechanical system has been obtained and the accumulated charge on the electrodes of the piezo-harvester has been calculated. The magnetic field of the electromagnetic harvester has been modeled with the help of FEMM and its electromotive force (e.m.f.) has been defined. Equivalent circuits have been drawn and experiments for validation of the developed models have been conducted.