Piezoelectric energy harvesting device optimization by synchronous electric charge extraction

被引：507

作者：

Lefeuvre, E ^{[1
]}

Badel, A ^{[1
]}

Richard, C ^{[1
]}

Guyomar, D ^{[1
]}

机构：

[1] Inst Natl Sci Appl, Lab Genie Elect & Ferroelect, F-69621 Villeurbanne, France

来源：

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES | 2005年 / 16卷 / 10期

关键词：

energy harvesting; self-powered; renewable energy; piezoelectric; vibration;

D O I：

10.1177/1045389X05056859

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This article presents a nonlinear approach to optimize the power flow of vibration-based piezoelectric energy-harvesting devices. This self-adaptive principle is based on a particular synchronization between extraction of the electric charge produced by the piezoelectric element and the system vibrations, which maximizes the mechanical to electrical energy conversion. An analytical expression of the optimal power flow is derived from a simple electromechanical model. An electronic circuit designed to perform the synchronous charge extraction is proposed. Theoretical predictions confirmed by experimental results show that the new principle increases the harvested power by 400% as compared with a quasilinear impedance adaptation optimization method.

引用

页码：865 / 876

页数：12

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