利用压电圆形膜片阵列进行振动能量采集。
Vibration energy harvesting using a piezoelectric circular diaphragm array.
机构信息
Functional Materials Research Laboratory, Tongji University, Shanghai, China.
出版信息
IEEE Trans Ultrason Ferroelectr Freq Control. 2012 Sep;59(9):2022-6. doi: 10.1109/TUFFC.2012.2422.
This paper presents a method for harvesting electric energy from mechanical vibration using a mechanically excited piezoelectric circular membrane array. The piezoelectric circular diaphragm array consists of four plates with series and parallel connection, and the electrical characteristics of the array are examined under dynamic conditions. With an optimal load resistor of 160 kΩ, an output power of 28 mW was generated from the array in series connection at 150 Hz under a prestress of 0.8 N and a vibration acceleration of 9.8 m/s(2), whereas a maximal output power of 27 mW can be obtained from the array in parallel connection through a resistive load of 11 kΩ under the same frequency, prestress, and acceleration conditions. The results show that using a piezoelectric circular diaphragm array can significantly increase the output of energy compared with the use of a single plate. By choosing an appropriate connection pattern (series or parallel connections) among the plates, the equivalent impedance of the energy harvesting devices can be tailored to meet the matched load of different applications for maximal power output.
本文提出了一种利用机械激励的压电圆膜阵列从机械振动中获取电能的方法。该压电圆膜阵列由四块具有串联和并联连接的板组成，并在动态条件下检查了阵列的电特性。在 0.8 N 的预应力和 9.8 m/s(2)的振动加速度下，在 150 Hz 时，通过串联连接的最优负载电阻 160 kΩ，从该阵列中产生了 28 mW 的输出功率，而在相同频率、预应力和加速度条件下，通过 11 kΩ 的电阻负载，从并联连接的阵列中可获得最大 27 mW 的输出功率。结果表明，与使用单个板相比，使用压电圆膜阵列可以显著增加能量输出。通过选择板之间的适当连接模式（串联或并联连接），可以调整能量收集装置的等效阻抗，以满足不同应用的匹配负载，从而获得最大功率输出。
Zotero 插件