Vibration energy harvesting

Harvesting ambient vibration energy is an attractive method to supply power for wireless sensors or low-powered portable electronic devices. As the sources of vibration in real application often involve randomly distribution of energy over a wide frequency spectrum, the energy harvester should be de...

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Main Author: Liu, Ailing.
Other Authors: Yang Yaowen
Format: Final Year Project
Language:English
Published: 2013
Subjects:
Online Access:http://hdl.handle.net/10356/52988
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-529882023-03-03T17:12:43Z Vibration energy harvesting Liu, Ailing. Yang Yaowen School of Civil and Environmental Engineering DRNTU::Engineering Harvesting ambient vibration energy is an attractive method to supply power for wireless sensors or low-powered portable electronic devices. As the sources of vibration in real application often involve randomly distribution of energy over a wide frequency spectrum, the energy harvester should be designed to broaden the bandwidth and to match the resonant frequency to ambient vibration frequency for effective tapping of vibration energy. In this report, the design and testing of a non-linear piezoelectric energy harvester using a repulsive magnetic force is presented. The harmonic and random experimental tests have been carried out to study the power output response for the three types of excitation levels. In the random analysis, results have proven that the proposed nonlinear PEH is able to double the power produced by the linear one under the same random excitations. Therefore, the non-linear PEH is able to achieve higher level of harvested power and an increased bandwidth over a linear harvester. Further experiments are performed on the different distance of the two magnets to determine the optimized magnet arrangement for power optimization. Bachelor of Engineering (Civil) 2013-05-29T06:47:25Z 2013-05-29T06:47:25Z 2013 2013 Final Year Project (FYP) http://hdl.handle.net/10356/52988 en Nanyang Technological University 50 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering
spellingShingle DRNTU::Engineering
Liu, Ailing.
Vibration energy harvesting
description Harvesting ambient vibration energy is an attractive method to supply power for wireless sensors or low-powered portable electronic devices. As the sources of vibration in real application often involve randomly distribution of energy over a wide frequency spectrum, the energy harvester should be designed to broaden the bandwidth and to match the resonant frequency to ambient vibration frequency for effective tapping of vibration energy. In this report, the design and testing of a non-linear piezoelectric energy harvester using a repulsive magnetic force is presented. The harmonic and random experimental tests have been carried out to study the power output response for the three types of excitation levels. In the random analysis, results have proven that the proposed nonlinear PEH is able to double the power produced by the linear one under the same random excitations. Therefore, the non-linear PEH is able to achieve higher level of harvested power and an increased bandwidth over a linear harvester. Further experiments are performed on the different distance of the two magnets to determine the optimized magnet arrangement for power optimization.
author2 Yang Yaowen
author_facet Yang Yaowen
Liu, Ailing.
format Final Year Project
author Liu, Ailing.
author_sort Liu, Ailing.
title Vibration energy harvesting
title_short Vibration energy harvesting
title_full Vibration energy harvesting
title_fullStr Vibration energy harvesting
title_full_unstemmed Vibration energy harvesting
title_sort vibration energy harvesting
publishDate 2013
url http://hdl.handle.net/10356/52988
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