Two-dimensional vibration energy harvester with radially distributed piezoelectric array

Xing LIU; Xiao-zhou ZHANG; Hai-bo ZHAO

doi:10.3788/OPE.20182609.2181

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Two-dimensional vibration energy harvester with radially distributed piezoelectric array

更新时间：2020-08-13

- Two-dimensional vibration energy harvester with radially distributed piezoelectric array
- Optics and Precision Engineering Vol. 26, Issue 9, Pages: 2181-2189(2018)
- 作者机构：
  
  安徽大学物理与材料科学学院, 安徽合肥 230601
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20182609.2181
  CLC： TB853.29
- Received：15 May 2018，
  
  Accepted：29 June 2018，
  
  Published：25 September 2018
- 稿件说明：
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Xing LIU, Xiao-zhou ZHANG, Hai-bo ZHAO. Two-dimensional vibration energy harvester with radially distributed piezoelectric array[J]. Optics and precision engineering, 2018, 26(9): 2181-2189.
DOI：

Xing LIU, Xiao-zhou ZHANG, Hai-bo ZHAO. Two-dimensional vibration energy harvester with radially distributed piezoelectric array[J]. Optics and precision engineering, 2018, 26(9): 2181-2189. DOI： 10.3788/OPE.20182609.2181.

摘要

为了有效采集多个方向的振动能量，本文提出了一种圆柱形的压电阵列径向分布的二维（2D）振动能量采集器。通过将柔性弧形压电阵列径向分布在圆柱体上，该采集器可以收集到二维（2D）平面内任意方向的振动能量。同时，引入了角度带宽来描述采集器获取二维振动能量的能力。实验结果表明：这种新型结构采集器的角度带宽接近180°；而且，通过把对称位置的聚偏二氟乙烯（PVDF）压电元件进行反向串联，采集器的最大输出电压可以达到11.6 V；当把对称位置的聚偏二氟乙烯（PVDF）压电元件反向并联时，最大输出功率达到13.5

W。与传统的悬臂式压电振动能量采集器相比，该二维（2D）采集器具有更好的多方向振动能量采集性能。

Abstract

In order to effectively collect vibration energy from multiple directions

a Piezoelectric Vibration Energy Harvester (PVEH) with a radially distributed piezoelectric array was proposed for scavenging two-dimensional (2D) vibration energy. By employing an arc-shaped piezoelectric array that was radially distributed on a flexible cylinder

the proposed harvester could scavenge vibration energy from various directions in a 2D plane. A novel concept

termed angle bandwidth

has also been introduced for describing the ability of harvesting 2D vibration energy. The obtained experimental results show that the proposed design can achieve a large angle bandwidth of approximately 180°. Furthermore

the maximum output voltage of the PVEH can reach a value of 11.6 V by connecting the symmetric polyvinylidene fluoride (PVDF) elements in series

whereas the maximum output power can attain a value of 13.5

W by connecting the symmetric PVDF elements in parallel. Hence

compared to a traditional cantilever-shaped PVEH

the proposed 2D PVEH possesses superior ability for harvesting multi-directional vibration energy.

关键词

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references

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