摘要
提出了一种新型的压电能量回收器件,通过一个开关功率变换器的辅助,系统的能量转换效率可提高400%。该功率变换器原型为Buck-Boost变压器,本项研究通过低功耗的控制电路对其进行了优化。利用Pspice软件对整个系统电路进行了建模和仿真,仿真结果显示,优化后的能量回收器件输出功率提高了3.4倍。
A high efficiency piezoelectric energy harvester is designed and experiment results show that the power transformation efficiency of the piezoelectric energy harvester can be enhanced by more than 400% by applying a switching power converter. This switching power converter is derived from Buck- Boost converter, and it is o The the whole circuitry is mode ptlmlZ led an ed using a control circuitry of low power consumption in this work. d simulated in the Pspice software. The simulation results show that output power of proposed energy harvester increases by 3.4 times after optimization.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2008年第12期2346-2351,共6页
Optics and Precision Engineering
基金
Supported by the National Natural Science Foundation of China(No.50775110)
the NUAA Foundation for Graduate Innovation(No.BCXJ08-04)
关键词
能量回收
压电系统
功率变换器
能量自给器件
energy harvesting
piezoelectric system
power converter
self-powered device
