A New Electrode Design Method in Piezoelectric Vibration Energy Harvesters to Maximize Output Power

Hdl Handle:
http://hdl.handle.net/10034/620604
Title:
A New Electrode Design Method in Piezoelectric Vibration Energy Harvesters to Maximize Output Power
Authors:
Du, Sijun; Jia, Yu; Chen, Shao-Tuan; Zhao, Chun; Sun, Boqian; Arroyo, Emmanuelle; Seshia, Ashwin A.
Abstract:
A resonant vibration energy harvester typically comprises of a clamped anchor and a vibrating shuttle with a proof mass. Piezoelectric materials are embedded in locations of high strain in order to transduce mechanical deformation into electrical charge. Conventional design for piezoelectric vibration energy harvesters (PVEH) usually utilizes piezoelectric materials and metal electrode layers covering the entire surface area of the cantilever with no consideration provided to examine the trade-off involved with respect to maximize output power. This paper reports on the theory and experimental verification underpinning optimization of the active electrode area in order to maximize output power. The calculations show that, in order to maximize the output power of a PVEH, the electrode should cover the piezoelectric layer from the peak strain area to a position, where the strain is a half of the average strain in all the previously covered area. With the proposed electrode design, the output power can be improved by 145% and 126% for a cantilever and a clamped-clamped beam, respectively. MEMS piezoelectric harvesters are fabricated to experimentally validate the theory.
Affiliation:
University of Cambridge; University of Chester
Citation:
Du, S., Jia, Y., Chen, S.T., Zhao, C., Sun, B., Arroyo, E., & Seshia, A.A. (2017). A New Electrode Design Method in Piezoelectric Vibration Energy Harvesters to Maximize Output Power. Sensors and Actuators A: Physical, 263(15), 693-701
Publisher:
Elsevier
Journal:
Sensors and Actuators A: Physical
Publication Date:
19-Jul-2017
URI:
http://hdl.handle.net/10034/620604
DOI:
10.1016/j.sna.2017.06.026
Additional Links:
https://doi.org/10.1016/j.sna.2017.06.026
Type:
Article
Language:
en
ISSN:
0924-4247
Appears in Collections:
Mechanical Engineering

Full metadata record

DC FieldValue Language
dc.contributor.authorDu, Sijunen
dc.contributor.authorJia, Yuen
dc.contributor.authorChen, Shao-Tuanen
dc.contributor.authorZhao, Chunen
dc.contributor.authorSun, Boqianen
dc.contributor.authorArroyo, Emmanuelleen
dc.contributor.authorSeshia, Ashwin A.en
dc.date.accessioned2017-08-29T13:21:09Z-
dc.date.available2017-08-29T13:21:09Z-
dc.date.issued2017-07-19-
dc.identifier.citationDu, S., Jia, Y., Chen, S.T., Zhao, C., Sun, B., Arroyo, E., & Seshia, A.A. (2017). A New Electrode Design Method in Piezoelectric Vibration Energy Harvesters to Maximize Output Power. Sensors and Actuators A: Physical, 263(15), 693-701en
dc.identifier.issn0924-4247-
dc.identifier.doi10.1016/j.sna.2017.06.026-
dc.identifier.urihttp://hdl.handle.net/10034/620604-
dc.description.abstractA resonant vibration energy harvester typically comprises of a clamped anchor and a vibrating shuttle with a proof mass. Piezoelectric materials are embedded in locations of high strain in order to transduce mechanical deformation into electrical charge. Conventional design for piezoelectric vibration energy harvesters (PVEH) usually utilizes piezoelectric materials and metal electrode layers covering the entire surface area of the cantilever with no consideration provided to examine the trade-off involved with respect to maximize output power. This paper reports on the theory and experimental verification underpinning optimization of the active electrode area in order to maximize output power. The calculations show that, in order to maximize the output power of a PVEH, the electrode should cover the piezoelectric layer from the peak strain area to a position, where the strain is a half of the average strain in all the previously covered area. With the proposed electrode design, the output power can be improved by 145% and 126% for a cantilever and a clamped-clamped beam, respectively. MEMS piezoelectric harvesters are fabricated to experimentally validate the theory.en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urlhttps://doi.org/10.1016/j.sna.2017.06.026en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectEnergy harvestingen
dc.subjectPiezoelectric transducersen
dc.subjectMEMSen
dc.titleA New Electrode Design Method in Piezoelectric Vibration Energy Harvesters to Maximize Output Poweren
dc.typeArticleen
dc.contributor.departmentUniversity of Cambridge; University of Chesteren
dc.identifier.journalSensors and Actuators A: Physicalen
dc.date.accepted2017-06-26-
or.grant.openaccessYesen
rioxxterms.funderEPSRCen
rioxxterms.identifier.projectEP/L010917/1en
rioxxterms.versionAMen
rioxxterms.licenseref.startdate2019-07-19-
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