Performance enhancement of an out-of-plane electret-based vibrational energy harvester with dual charged plates

被引:1
|
作者
Tao, K. [1 ]
Lye, S. W. [1 ]
Miao, J. M. [1 ]
Hu, Xiao [2 ]
机构
[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore
[2] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore
关键词
D O I
10.1088/1742-6596/557/1/012064
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This paper presents a novel out-of-plane electret-based vibrational power generator (EVPG) that has both negative and positive charged electret plates integrated into a single seismic mass system. Compared with the conventional single-charged two-plate configuration, the proposed device not only exhibits an enhanced output voltage magnitude but also has a wide operational bandwidth due to spring softening nonlinearity according to the experimental analysis. With the acceleration changes from 0.1g to 0.5g, the operating 3-dB bandwidth can be increased 2.6 times from 2.5 Hz to 6.5 Hz, which indicates higher energy conversion efficiency than a linear energy harvester in the practical scenario of broadband random vibrations.
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页数:5
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