On the optimal energy harvesting from a vibration source

摘要: The optimization of power acquired from a piezoelectric vibration-based energy harvester which utilizes harvesting circuit employing an inductor and resistive load is described. problem formulated as nonlinear program wherein the Karush–Kuhn–Tucker (KKT) conditions are stated resulting cases treated. In first part manuscript, case purely analyzed. While this configuration has received considerable attention in literature, previous efforts have neglected effect damping on optimal parameters. Here, we explore impact optimality illustrate its quantitative qualitative effects. Further, analyze electromechanical coupling demonstrating that harvested decreases beyond coefficient. This result challenges literature suggesting higher coefficients always culminate more efficient harvesters. second work, adding to examined. It demonstrated addition provides substantial improvement performance device. also shown within realistic values coefficient, independent coefficient; supports findings for circuit.