Synchronous inversion and charge extraction (SICE): a hybrid switching interface for efficient vibrational energy harvesting
Synchronous inversion and charge extraction (SICE): a hybrid switching interface for efficient vibrational energy harvesting
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DOI：
10.1088/1361-665x/aa8d44
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发表时间：
2017-10
影响因子：
4.1
通讯作者：
M. Lallart;Wen-Jong Wu;Yu-Hsuan Hsieh;Linjuan Yan
中科院分区：
文献类型：
--
作者：
M. Lallart;Wen-Jong Wu;Yu-Hsuan Hsieh;Linjuan Yan
本文的目的是提出一种利用非线性处理的电气接口，既可以显著提高压电器件的电压，又可以独立地从连接的电气负载中提取相应的静电能量。该系统的原理在于，对于给定的极值出现次数，快速反转每个极值(同步接通电感操作)上的压电电压，然后通过所谓的同步电荷提取(SECA)来提取压电元件上可用的总静电能量，以达到能量收集的目的。与传统的提取每个电压极值出现处的能量的方法相比，该方法在低耦合系统中表现出显著的改善，这归功于对电压放大和提取事件数之间的权衡的精细控制。
This paper aims at proposing an electrical interface taking advantage of nonlinear treatment for both significantly increasing the voltage of a piezoelectric device and extracting the corresponding electrostatic energy in an independent way from the connected electrical load. The principles of the proposed system lies in quickly inverting the piezoelectric voltage on each extremum (synchronized switch on inductor operations) for a given number of extremum occurrences, and then extracting the total electrostatic energy available on the piezoelectric element through the so-called synchronous electric charge extraction (SECE) for energy harvesting purpose. Compared to classical SECE approach, which consists in extracting the energy on each voltage extremum occurrence, the proposed scheme shows a significant improvement in low-coupled systems thanks to a fine control of the trade-off between voltage amplification and number of extraction events.