Connection Configurations to Increase Operational Range and Output Power of Piezoelectric MEMS Vibration Energy Harvesters

Hdl Handle:
http://hdl.handle.net/10034/620412
Title:
Connection Configurations to Increase Operational Range and Output Power of Piezoelectric MEMS Vibration Energy Harvesters
Authors:
Du, Sijun; Chen, Shao-Tuan; Jia, Yu; Arroyo, Emmanuelle; Seshia, Ashwin A.
Abstract:
Among the various methods of extracting energy harvested by a piezoelectric vibration energy harvester, full-bridge rectifiers (FBR) are widely employed due to its simplicity and stability. However, its efficiency and operational range are limited due to a threshold voltage that the open-circuit voltage generated from the piezoelectric transducer (PT) must attain prior to any energy extraction. This voltage linearly depends on the output voltage of the FBR and the forward voltage drop of diodes and the nature of the interface can significantly limit the amount of extracted energy under low excitation levels. In this paper, a passive scheme is proposed to split the electrode of a micromachined PT into multiple (n) equal regions, which are electrically connected in series. The power output from such a series connected MEMS PT allows for the generated voltage to readily overcome the threshold set by the FBR. Theoretical calculations have been performed in this paper to assess the performance for different series stages (n values) and the theory has been experimentally validated. The results show that a PT with more series stages (high n values) improves the efficiency of energy extraction relative to the case with fewer series-connected stages under weak excitation levels.
Affiliation:
University of Cambridge; University of Chester
Citation:
Du, S., Chen, S., Jia, Y., Arroyo, E. & Seshia, A. (2016). Connection configurations to increase operational range and output power of piezoelectric MEMS vibration energy harvesters. Journal of Physics Conference Series, 773(1).
Publisher:
IOP Publishing
Journal:
Journal of Physics: Conference Series
Publication Date:
6-Sep-2016
URI:
http://hdl.handle.net/10034/620413
DOI:
10.1088/1742-6596/773/1/012063
Additional Links:
http://iopscience.iop.org/article/10.1088/1742-6596/773/1/012063
Type:
Article
Language:
en
Description:
This document is the Accepted Manuscript version of a published work that appeared in final form in Journal of Physics: Conference Series. To access the final edited and published work see http://dx.doi.org/10.1088/1742-6596/773/1/012063
ISSN:
1742-6588
EISSN:
1742-6596
Appears in Collections:
Mechanical Engineering; Mechanical Engineering

Full metadata record

DC FieldValue Language
dc.contributor.authorDu, Sijunen
dc.contributor.authorChen, Shao-Tuanen
dc.contributor.authorJia, Yuen
dc.contributor.authorArroyo, Emmanuelleen
dc.contributor.authorSeshia, Ashwin A.en
dc.date.accessioned2017-02-28T14:41:42Z-
dc.date.available2017-02-28T14:41:42Z-
dc.date.issued2016-09-06-
dc.identifier.citationDu, S., Chen, S., Jia, Y., Arroyo, E. & Seshia, A. (2016). Connection configurations to increase operational range and output power of piezoelectric MEMS vibration energy harvesters. Journal of Physics Conference Series, 773(1).en
dc.identifier.issn1742-6588-
dc.identifier.doi10.1088/1742-6596/773/1/012063-
dc.identifier.urihttp://hdl.handle.net/10034/620413-
dc.descriptionThis document is the Accepted Manuscript version of a published work that appeared in final form in Journal of Physics: Conference Series. To access the final edited and published work see http://dx.doi.org/10.1088/1742-6596/773/1/012063en
dc.description.abstractAmong the various methods of extracting energy harvested by a piezoelectric vibration energy harvester, full-bridge rectifiers (FBR) are widely employed due to its simplicity and stability. However, its efficiency and operational range are limited due to a threshold voltage that the open-circuit voltage generated from the piezoelectric transducer (PT) must attain prior to any energy extraction. This voltage linearly depends on the output voltage of the FBR and the forward voltage drop of diodes and the nature of the interface can significantly limit the amount of extracted energy under low excitation levels. In this paper, a passive scheme is proposed to split the electrode of a micromachined PT into multiple (n) equal regions, which are electrically connected in series. The power output from such a series connected MEMS PT allows for the generated voltage to readily overcome the threshold set by the FBR. Theoretical calculations have been performed in this paper to assess the performance for different series stages (n values) and the theory has been experimentally validated. The results show that a PT with more series stages (high n values) improves the efficiency of energy extraction relative to the case with fewer series-connected stages under weak excitation levels.en
dc.language.isoenen
dc.publisherIOP Publishingen
dc.relation.urlhttp://iopscience.iop.org/article/10.1088/1742-6596/773/1/012063en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectEnergy harvestingen
dc.titleConnection Configurations to Increase Operational Range and Output Power of Piezoelectric MEMS Vibration Energy Harvestersen
dc.typeArticleen
dc.identifier.eissn1742-6596-
dc.contributor.departmentUniversity of Cambridge; University of Chesteren
dc.identifier.journalJournal of Physics: Conference Seriesen
dc.date.accepted2016-09-01-
or.grant.openaccessYesen
rioxxterms.funderunfundeden
rioxxterms.identifier.projectunfundeden
rioxxterms.versionAMen
rioxxterms.licenseref.startdate2016-12-06-
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