Piezoelectric energy harvester interface with real-time MPPT
Piezoelectric energy harvester interface with real-time MPPT
复制标题
具有实时 MPPT 功能的压电能量采集器接口
DOI：
10.1088/1742-6596/557/1/012125
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Elliott A
中科院分区：
文献类型：
--
作者：
Elliott A
如果阻尼力不能随着机械激励水平的变化而动态地改变，则谐振压电采集器的功率可能受到严重限制。单电源预偏置（SSPB）技术使得库仑阻尼力能够由单个电压设置，并且因此通过改变该电压，可以实现对机械力的变化的实时适应。类似地，二极管桥式整流器电路的导通角可以通过改变所施加的偏置电压来改变。本文提出了一种实现这一目标的方法，通过改变从预偏置电容器中使用的SSPB和二极管桥式整流器的能量转移到一个蓄电池通过降压转换器。控制系统在FPGA上实现，功耗为50 μW。
Power of resonant piezoelectric harvesters can be severely limited if the damping force cannot be dynamically altered as the mechanical excitation level changes. The singlesupply pre-biasing (SSPB) technique enables the Coulomb damping force to be set by a single voltage and so by varying that voltage, real-time adaptation to variations in the mechanical force can be implemented. Similarly the conduction angle of a diode bridge rectifier circuit can be altered by changing the biasing voltage applied. This paper presents a method of achieving this by altering the amount of energy transferred from the pre-biasing capacitor used in SSPB and the diode bridge rectifier to a storage battery via a buck converter. The control system was implemented on a FPGA and consumed 50 μW.
影响因子：
6.7
作者：
Dicken, James;Mitcheson, Paul D.;Yeatman, Eric M.
通讯作者：
Yeatman, Eric M.