A NEW POLING METHOD FOR HIGH POWER GENERTOR USING PZT CERAMIC

초록

In this paper, the feasibility of a way to improve the output power from the PZT based energy harvester is demonstrated with introducing a new poling method in order to enhance the piezoelectric performance of the PZT material. A PZT (lead zirconate titanate Pb(Zr,Ti)O3) based energy harvester is designed, fabricated, and characterized with applying a new poling method. This PZT cantilever is used d31 mode to generate the electrical power. As a result, the PZT based power generator with the dimension of 7mm×3mm×0.03mm generates 40μW with the application of 1 MV/m pulse mode voltage from 1g acceleration at its resonant frequency of 942 Hz. Under the same conditions, this device shows the result of 33μW power with application of 1 MV/m DC voltage.