Abstract
In this present work, a vertical cantilever piezoelectric energy harvester is proposed that exploits wind energy for vibration. The vertical cantilever is attached with a torsional spring at the base and a tip mass. A square bluff body is attached at the end of the cantilever so that the wind energy could be exploited effectively. The governing nonlinear electromechanical equations of motion for the system are developed using Lagrange principle and were discretized to the temporal form by using generalized Galerkin's method. The equations are solved using method of multiple scales and also using numerical methods. The responses of the system are determined for different wind speeds and load resistances. Time response and phase portraits are plotted to study the system response and influence of different system parameters on voltage generation.
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