Generation of electrical energy for portable devices Comparative study of an electromagnetic and a piezoelectric system

被引：207

作者：

Poulin, G ^{[1
]}

Sarraute, E ^{[1
]}

Costa, F ^{[1
]}

机构：

[1] ENS, SATIE Lab, F-94235 Cachan, France

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2004年 / 116卷 / 03期

关键词：

piezoelectric generator; electromagnetic generator; autonomous portable systems; electromechanical conversion;

D O I：

10.1016/j.sna.2004.05.013

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents the comparative study of two different electromechanical systems, in order to conceive autonomous portable generators capable of harvesting human mechanical energy. The first one is an electromagnetic system, made of a magnet in translation within a coil. The second one is a piezoelectric system, which is a PZT ceramic bar, polarised longitudinally, embedded at one end and constrained at the other end. The analytical models described in this paper present a high similarity and a duality in signal levels, adapted load and optimal working frequency, the two latters corresponding to the maximal electrical power generated. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：461 / 471

页数：11

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