Designing, Modelling and Testing of Vibration Energy Harvester with Nonlinear Stiffness

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F17%3APU124254" target="_blank" >RIV/00216305:26210/17:PU124254 - isvavai.cz</a>

Result on the web

<a href="http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2630615" target="_blank" >http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2630615</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2264769" target="_blank" >10.1117/12.2264769</a>

Result language

angličtina

Original language name

Designing, Modelling and Testing of Vibration Energy Harvester with Nonlinear Stiffness

Original language description

This paper is focused on a design of a piezoelectric vibration energy harvester with an additional nonlinear stiffness. Common piezoelectric energy harvesters consist of a cantilever with piezoceramic layers and a tip mass for tuning up the operation frequency. This system is excited by mechanical vibrations and it provides an autonomous source of electrical energy. A linear stiffness of the cantilever has very narrow resonance frequency bandwidth which makes the piezoelectric cantilever sensitive to tuning up of the resonance frequency. It could be tuned only for one narrow vibration frequency bandwidth. The piezoelectric vibration energy harvester with nonlinear stiffness could provide the resonance frequency bandwidth wider and it allows energy harvesting from the wider bandwidth of excitation vibrations. The additional nonlinear stiffness is implemented by using a set of permanent magnets. A simulation and an experiment were performed and the results show a wider resonance bandwidth. However, it depended on direction of vibration frequency sweeping. The frequency bandwidth is more than three times wider but there is only a half resonance amplitude of oscillations. That means that the maximal harvested power is lower but the average harvested power around resonance frequency was higher which was the goal of this research.

Czech name

—

Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20201 - Electrical and electronic engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of SPIE - The International Society for Optical Engineering

ISBN

9781510609938

ISSN

0277-786X

e-ISSN

—

Number of pages

9

Pages from-to

„102460W-1“-„102460W-9“

Publisher name

SPIE

Place of publication

Barcelona

Event location

Barcelona

Event date

May 8, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000423020100030