A new energy harvester design for high power output at low frequencies
作者： Lokesh Dhakar , Huicong Liu , FEH Tay , Chengkuo Lee , None
DOI: 10.1016/J.SNA.2013.06.009
关键词:
摘要: Abstract The energy harvesters (EHs) using resonant mechanism have encountered two major issues: low output power scavenged from frequency vibrations, and limited effectiveness of harvesting in a narrow range near frequency. To overcome these issues, we proposed piezoelectric EH comprising composite cantilever proof mass at the free end. is formed by bimorph polymer beam (soft spring) mechanically connected along longitudinal direction. Comparing with 275 Hz standalone bimorph, design enables to be as 36 Hz. Moreover, this kind demonstrated 3.12 times 1.32 (at 0.1 g) more efficient generation than end, respectively. With aid spring hardening effect, operating bandwidth (BW) can increased 5 Hz 16.4 Hz.
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