Characterization of Capacitor Charging by Vibration-based Piezoelectric Power Generator

摘要：

Mechanical vibration energy can be converted into electrical energy using piezoelectric power generator. The electrical energy is usually collected by a storage capacitor instead of being directly consumed by the load. In this way,to characterize the charging of the storage capacitor is important and necessary. This paper focuses on the characterization of the piezoelectric power generator with capacitive load. Analytical expression of the voltage across the storage capacitor is derived and analyzed Analysis results show that the storage capacitor is exponentially charged and the maximum instant power occurs when one-half the maximum voltage of the storage capacitor. These analytical results are well conformed by experiments. They are useful for both macro and MEMS-based energy-harvesting devices.

作者: Jianhui Lin Xiaoming Wu Hao Chen Xi Liu Tianling Ren Lilian Liu

作者单位: Institute of Microelectronics,Tsinghua University,Beijing 10008,P.R.China Tsinghua National Laboratory for Information Science and Technology,Beijing 100084,P.R.China

会议类型: 国际会议

会议名称: 9th International Conference on Solid-State and Integrated-Circuit Technology(第9届固态和集成电路国际会议)

会议地点: 北京

会议语种:英文

页码: 2464-2467

在线出版日期: 2008-10-20（万方平台首次上网日期，不代表论文的发表时间）