scholarly journals Modeling of a Rope-Driven Piezoelectric Vibration Energy Harvester for Low-Frequency and Wideband Energy Harvesting

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 305
Author(s):  
Jinhui Zhang ◽  
Maoyu Lin ◽  
Wei Zhou ◽  
Tao Luo ◽  
Lifeng Qin
Keyword(s):  
Energy Harvesting ◽  
Mechanical Model ◽  
Energy Harvester ◽  
Low Frequency ◽  
Vibration Energy ◽  
Vibration Energy Harvester ◽  
Multiple Parameters ◽  
Mass Spring ◽  
Piezoelectric Vibration Energy Harvester ◽  
Piezoelectric Vibration

In this work, a mechanical model of a rope-driven piezoelectric vibration energy harvester (PVEH) for low-frequency and wideband energy harvesting was presented. The rope-driven PVEH consisting of one low-frequency driving beam (LFDB) and one high-frequency generating beam (HFGB) connected with a rope was modeled as two mass-spring-damper suspension systems and a massless spring, which can be used to predict the dynamic motion of the LFDB and HFGB. Using this model, the effects of multiple parameters including excitation acceleration, rope margin and rope stiffness in the performance of the PVEH have been investigated systematically by numerical simulation and experiments. The results show a reasonable agreement between the simulation and experimental study, which demonstrates the validity of the proposed model of rope-driven PVEH. It was also found that the performance of the PVEH can be adjusted conveniently by only changing rope margin or stiffness. The dynamic mechanical model of the rope-driven PVEH built in this paper can be used to the further device design or optimization.

A novel low-frequency broadband piezoelectric energy harvester combined with a negative stiffness vibration isolator

2019 ◽  
Vol 30 (7) ◽  
pp. 1105-1114 ◽  
Author(s):  
Dongxing Cao ◽  
Xiangying Guo ◽  
Wenhua Hu
Keyword(s):  
Energy Harvesting ◽  
Energy Harvester ◽  
Low Frequency ◽  
Negative Stiffness ◽  
Vibration Energy ◽  
Vibration Isolator ◽  
Vibration Energy Harvester ◽  
Piezoelectric Energy ◽  
Piezoelectric Vibration Energy Harvester ◽  
Piezoelectric Vibration

The transformation of waste vibration energy into low-power electricity has been intensely researched over the last decade to enable self-sustained wireless electronic components. Many kinds of nonlinear oscillators have been explored by several research groups in an effort to enhance the frequency bandwidth of operation. The negative stiffness vibration isolator, as a kind of passive vibration isolator, has undergone extensive investigation because of its low-frequency isolator characteristics. In this article, a novel broadband piezoelectric vibration energy harvester, which can be used for low-frequency ambient mechanical energy harvesting, is designed, and its dynamic responses are analyzed based on the advantage of the negative stiffness vibration isolator. The multi-scale perturbation method is applied to solve the electromechanical equations of the piezoelectric vibration energy harvester and obtain approximate analytical solutions. Solutions based on the analytical method and numerical simulations reveal the characteristics of significant broadband performance. The effects of the various system parameters on the frequency responses and output voltage of the piezoelectric vibration energy harvester system are investigated in detail, and the vibration isolation ability is verified by experimental measurements. It was concluded that the proposed piezoelectric vibration energy harvester achieved broadband vibration energy harvesting in the low-frequency vibration range.

Wideband/low frequency piezoelectric vibration energy harvester based on pneumato-coupling

2015 ◽  
Vol 23 (2) ◽  
pp. 497-503
Author(s):  
王淑云 WANG Shu-yun ◽  
张肖逸 ZHANG Xiao-yi ◽  
阚君武 KAN Jun-wu ◽  
张忠华 ZHANG Zhong-hua ◽  
于丽 YU Li ◽  
...  
Keyword(s):  
Energy Harvester ◽  
Low Frequency ◽  
Vibration Energy ◽  
Vibration Energy Harvester ◽  
Piezoelectric Vibration Energy Harvester ◽  
Piezoelectric Vibration

MEMS-based low-frequency piezoelectric vibration energy harvester

2014 ◽  
Vol 22 (9) ◽  
pp. 2476-2482 ◽  
Author(s):  
刘颖 LIU Ying ◽  
王艳芬 WANG Yan-fen ◽  
李刚 LI Gang ◽  
桑胜波 SANG Sheng-bo ◽  
李朋伟 LI Peng-wei
Keyword(s):  
Energy Harvester ◽  
Low Frequency ◽  
Vibration Energy ◽  
Vibration Energy Harvester ◽  
Piezoelectric Vibration Energy Harvester ◽  
Piezoelectric Vibration

A Broadband Frequency Piezoelectric Vibration Energy Harvester

2011 ◽  
Vol 483 ◽  
pp. 626-630 ◽  
Author(s):  
Hua An Ma ◽  
Jing Quan Liu ◽  
Gang Tang ◽  
Chun Sheng Yang ◽  
Yi Gui Li ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Frequency Band ◽  
Energy Harvester ◽  
Vibration Energy ◽  
Vibration Energy Harvesting ◽  
Vibration Energy Harvester ◽  
Piezoelectric Cantilever ◽  
Working Frequency ◽  
Piezoelectric Vibration Energy Harvester ◽  
Piezoelectric Vibration

As the low-power wireless sensor components and the development of micro electromechanical systems, long-term supply of components is a major obstacle of their development. One of solutions to this problem is based on the environmental energy collection of piezoelectric vibration energy harvesting. Currently, frequency band of piezoelectric vibration energy harvester is narrow and the frequency is high, which is not fit for the vibration energy acquisition in the natural environment. A piezoelectric vibration energy harvester with lower working frequency and broader band is designed and a test system to analyze the harvester is presented in this paper. The traditional mass is replaced by a permanent magnet in this paper, While other two permanent magnets are also placed on the upper and above of the piezoelectric cantilever. Experiments showed, under the 0.5g acceleration, compared with the traditional non-magnetic piezoelectric vibration energy harvesting, a piezoelectric cantilever (length 40mm, width 8mm, thickness 0.8mm) has a peak-peak voltage of 32.4V, effectively enlarges working frequency band from 67HZ-105HZ to 63HZ-108HZ.

A Magnet-Coupled Piezoelectric Vibration Energy Harvester

2013 ◽  
Vol 336-338 ◽  
pp. 38-41
Author(s):  
Xin Yue Kan ◽  
Li Feng Wen ◽  
Hui Ling Zhou ◽  
Shu Yun Wang
Keyword(s):  
Energy Harvester ◽  
Great Influence ◽  
Low Frequency ◽  
Effective Bandwidth ◽  
Vibration Energy ◽  
Optimal Frequency ◽  
Vibration Energy Harvester ◽  
Magnetic Dipoles ◽  
Piezoelectric Vibration Energy Harvester ◽  
Piezoelectric Vibration

To improve energy harvesting performance, a magnet-coupled piezoelectric vibration energy harvester (MCPEH) for low-level and low-frequency vibration was presented and investigated experimentally. The MCPEH consisted mainly of a piezo-cantilever with a permanent magnet at its free-end and another excitation magnet fixed on vibration structure. The magnets are used to produce magnetic attractive force to enhance energy generation. A MCPEH was fabricated with a piezo-cantilever measured 60x10x0.5mm3 and two magnets sized ø12x3mm3. The testing results show that the magnetic force, denoted by the initial separated distance between the magnetic dipoles (SDMD), exerts great influence on all of the generated voltage, optimal frequency, and effective bandwidth. With the SDMD reducing from 40mm to 15mm, the optimal frequency decrease from 32.75Hz to 30.5Hz, the effective bandwidth for the MCPEH to generated voltage of 15V rises from 2.5Hz to 7.5Hz, and the generated voltage rises from 30.4V to 44.4V.

scholarly journals Research on piezoelectric vibration energy harvester with variable section circular beam

2020 ◽  
pp. 146134842091840
Author(s):  
Tianbing Ma ◽  
Yongjing Ding ◽  
Xiaodong Wu ◽  
Nannan Chen ◽  
Menghan Yin
Keyword(s):  
Output Power ◽  
Electromechanical Coupling ◽  
Energy Harvester ◽  
Orthogonal Experiment ◽  
Low Frequency ◽  
Vibration Energy ◽  
Vibration Energy Harvester ◽  
Variable Section ◽  
Piezoelectric Vibration Energy Harvester ◽  
Piezoelectric Vibration

In order to reduce the natural frequency of the piezoelectric vibration energy harvester, improve performance of the piezoelectric vibration energy harvester, and meet the requirements of energy acquisition in the low-frequency vibration environment, a variable-section circular piezoelectric vibration energy harvester is presented. The dynamic model and electromechanical coupling model of variable-section circular piezoelectric vibration energy harvester are established. The main factors affecting the output performance of piezoelectric vibration energy harvester are analyzed. The structure parameters of piezoelectric vibration energy harvester are optimized by orthogonal experiment. An experimental platform is built to test output voltage and output power of piezoelectric vibration energy harvester. The experimental results show that when the number of energy harvester is 4 and the external load is 180KΩ, the parallel output power can reach 0.213mW, which can meet the requirements of micro-power device power supply.

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