Abstract
This paper presents piezoelectric energy power generator exploiting direct conversion of airflow into mechanical vibrations. The device consists of two tightly coupled parts: a mechanical resonator, which produces high-frequency mechanical oscillation from quasi-constant airflow, and piezoelectric power generator harvesting the energy from the resonator’s motion. The proposed energy harvester allows for locking up the devices lowest natural frequency to the vortex-shedding resonant frequency induced by the ambient energy source. The Energy Harvester demonstrated a peak-to-peak output voltage of 20V at 10Hz, from an input wind velocity of ∼7 m/s.
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