Bi-resonant structure with piezoelectric PVDF films for energy harvesting from random vibration sources at low frequency

Li, Shanshan1,2; Crovetto, Andrea3; Peng, Zhuoteng1; Zhang, Ai1,2; Hansen, Ole3; Wang, Mingjiang4; Li, Xinxin5; Wang, Fei1,2

2016-08-15

10.1016/j.sna.2016.06.033

SENSORS AND ACTUATORS A-PHYSICAL   影响因子和分区

0924-4247

This paper reports on a bi-resonant structure of piezoelectric PVDF films energy harvester (PPEH), which consists of two cantilevers with resonant frequencies of 15 Hz and 22 Hz. With increased acceleration, the vibration amplitudes of the two cantilever-mass structures are increased and collision occurs which causes strong mechanical coupling between the two subsystems. The experimental results show that the operating bandwidth is widened to 14 Hz (14-28 Hz) at an acceleration of 9.81 m/s(2), and the peak output power can be 0.35 mu W at a relatively low operation frequency of 16 Hz. Simulation and experiments with piezoelectric elements show that the energy harvesting device with the bi-resonant structure can generate higher power output than that of the sum of the two separate devices from random vibration sources at low frequency, and hence significantly improves the vibration-to-electricity conversion efficiency by 40-81%. (C) 2016 Elsevier B.V. All rights reserved.

Energy harvesting Piezoelectric PVDF Broad bandwidth Random vibration

SCI ; EI

英语

第一 ; 通讯

[ZDSYS20140509142721434]

Engineering ; Instruments & Instrumentation

Engineering, Electrical & Electronic ; Instruments & Instrumentation

WOS:000383828100062

ELSEVIER SCIENCE SA

20164102890024

Bandwidth ; Energy harvesting ; Nanocantilevers ; Natural frequencies ; Piezoelectricity

Energy Conversion Issues:525.5 ; Electricity: Basic Concepts and Phenomena:701.1 ; Information Theory and Signal Processing:716.1 ; Nanotechnology:761 ; Mechanics:931.1 ; Solid State Physics:933

ENGINEERING

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen, Peoples R China
2.Shenzhen Key Lab 3rd Generat Semicond Devices, Shenzhen, Peoples R China
3.Tech Univ Denmark, Dept Micro & Nanotechnol, DTU Nanotech, Bldg 345E, DK-2800 Lyngby, Denmark
4.Harbin Inst Technol, Sch Elect & Informat Engn, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China
5.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Transducer Technol, Shanghai 200050, Peoples R China

Li, Shanshan,Crovetto, Andrea,Peng, Zhuoteng,et al. Bi-resonant structure with piezoelectric PVDF films for energy harvesting from random vibration sources at low frequency[J]. SENSORS AND ACTUATORS A-PHYSICAL,2016,247:547-554.

Li, Shanshan.,Crovetto, Andrea.,Peng, Zhuoteng.,Zhang, Ai.,Hansen, Ole.,...&Wang, Fei.(2016).Bi-resonant structure with piezoelectric PVDF films for energy harvesting from random vibration sources at low frequency.SENSORS AND ACTUATORS A-PHYSICAL,247,547-554.

Li, Shanshan,et al."Bi-resonant structure with piezoelectric PVDF films for energy harvesting from random vibration sources at low frequency".SENSORS AND ACTUATORS A-PHYSICAL 247(2016):547-554.