Piezoelectric energy harvester impedance matching using a piezoelectric transformer

被引：29

作者：

Jabbar, Hamid ^{[1
]}

Jung, Hyun Jun ^{[2
]}

Chen, Nan ^{[3
]}

Cho, Dae Heung ^{[1
]}

Sung, Tae Hyun ^{[1
]}

机构：

[1] Hanyang Univ, Dept Elect Engn, Seoul 04763, South Korea

[2] Univ Maryland Baltimore Cty, Dept Mech Engn, Baltimore, MD 21250 USA

[3] Northwestern Polytech Univ, Sch Comp Sci & Engn, Xian 710072, Peoples R China

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2017年 / 264卷

关键词：

Piezoelectric; Energy harvesting; Piezoelectric transformer; Impedance matching; Harvesting circuit; POWER-SUPPLIES; INDUCTOR; CIRCUIT; DESIGN; VIBRATIONS;

D O I：

10.1016/j.sna.2017.07.036

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：

To harvest maximum power from a piezoelectric energy harvester requires conjugate impedance matching, consisting of both resistive and inductive load. In practical circuits, dc-dc converters working in discontinuous conduction mode are used for emulated resistive impedance matching. These converters contain a large and expensive electromagnetic component to reduce the wire conduction losses. A new approach toward piezoelectric energy harvester resistive impedance matching is presented by using a step-down piezoelectric transformer with a bi-directional inductor-less half-bridge circuit working under zero voltage switching conditions. The large and expensive magnetic transformer and inductor in previous works are replaced with a ceramic component with no electromagnetic interference. The presented technique can reduce the circuit size and the ceramic transformer can be manufactured on the harvester cantilever. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：141 / 150

页数：10

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