Abstract
In recent years, new energy supply (energy self-sufficiency) technology which can replace the traditional battery supply has become a hot topic in global research field of microelectronic devices. A new low-frequency trapezoidal bow-shaped piezoelectric energy harvester (TBPEH) was proposed. The geometric model and finite element model (FEM) were built. The static analysis, modal analysis and harmonic response analysis of the TBPEH were discussed by using the Finite Element Analysis(FEA). Then traditional rectangular bow-shaped piezoelectric energy harvester(RBPEH) was compared with the new TBPEH. Simulation showed that the TBPEH could harvest energy more effectively than the RBPEH. The output voltage was increased by 135% with little change in resonant frequency, and indicator of the inhibition of side peak (SPI) which represented the capability of broad-band energy harvesting rose 11.2%. The TBPEH resonance frequency is 34.1Hz, which can be applied to the low frequency environment.
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