4.8 Article

Transient response of a nonlinear energy sink based piezoelectric vibration energy harvester coupled to a synchronized charge extraction interface

期刊

NANO ENERGY
卷 87, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.nanoen.2021.106179

关键词

Nonlinear energy sink; Vibration energy harvesting; Targeted energy transfer; Synchronized charge extraction interface

资金

  1. Marsden Fund [UOA1713]
  2. Catalyst Seeding General Grant [20-UOA-035-CSG]
  3. Sichuan Science and Technology Program [2020YFH0066]
  4. Royal Society of New Zealand [20-UOA-035] Funding Source: Royal Society of New Zealand

向作者/读者索取更多资源

The study investigates the transient response of an NES-based piezoelectric vibration energy harvesting system interfaced with an SCE interface, analyzing the nonlinear normal mode of this electromechanically coupled system. Results show that the electrical load in the SCE interface has minimal impact on the energy harvesting performance of the system.
Integration of a piezoelectric transducer with a nonlinear energy sink (NES) has been realized for both vibration mitigation and broadband energy harvesting. However, to ensure that a harvester can generate power in a truly broadband manner, the impedance matching issue of the interface circuit should be addressed. The synchronized charge extraction (SCE) is one technology that has been proved to be able to address this issue for linear energy harvesters. This work intends to investigate the transient response of an NES-based piezoelectric vibration energy harvesting system interfaced with an SCE interface (NESVEH-SCE). The nonlinear normal mode of such an electromechanically coupled system is analyzed on the basis of the equivalent impedance method and complexification-averaging method. The frequency-energy plots are depicted and verified by wavelet analysis. The effects of electromechanical coupling strength, electrical load in the SCE interface and initial input energy level on the performance of the proposed system are discussed by using the circuit simulation tool. Finally, experiments are performed to verify the consequences obtained from the theoretical and numerical methods, and demonstrate that the energy harvested during the transient response of the NESVEH-SCE system is independent of the electrical load in the SCE interface.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据