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A shear mode piezoelectric energy harvester for harvesting energy from rotary motion is developed. The kinetic energy in the form of rotation is converted into electrical form of energy by piezoelectric principle with oscillation of piezoelectric patch through magnetic shear force. Efforts have been made to increase the output power using shear mode of operation. In order to estimate the induced voltage of piezoelectric patch, a mathematical model and an Finite Element (FE) model are developed. Considering various parameters, optimization of the harvester was made. Analytical and Finite Element Method (FEM) results are compared and good agreement has been found. The total average output power of 358.44 W is generated when rotary speed of hub of about 600 RPM.
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Narolia et al. (2020) studied this question.
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