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A Passive Design Scheme to Increase the Rectified Power of Piezoelectric Energy Harvesters

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cam.issuedOnline2018-01-26
dc.contributor.authorDu, S
dc.contributor.authorJia, Y
dc.contributor.authorZhao, C
dc.contributor.authorAmaratunga, GAJ
dc.contributor.authorSeshia, AA
dc.contributor.orcidDu, S [0000-0001-6238-4423]
dc.contributor.orcidJia, Y [0000-0001-9640-1666]
dc.contributor.orcidSeshia, AA [0000-0001-9305-6879]
dc.date.accessioned2018-03-19T09:36:37Z
dc.date.available2018-03-19T09:36:37Z
dc.date.issued2018
dc.description.abstractPiezoelectric vibration energy harvesting is becoming a promising solution to power wireless sensors and portable electronics. While miniaturizing energy harvesting systems, rectified power efficiencies from miniaturized piezoelectric transducers (PT) are usually decreased due to insufficient voltage levels generated by the PTs. In this paper, a monolithic PT is split into several regions connected in series. The raw electrical output power is kept constant for different connection configurations as theoretically predicted. However, the rectified power following a full-bridge rectifier (FBR), or a synchronized switch harvesting on inductor (SSHI) rectifier, is significantly increased due to the higher voltage/current ratio of series connections. This is an entirely passive design scheme without introducing any additional quiescent power consumption and it is compatible with most of state-of-the-art interface circuits. Detailed theoretical derivations are provided to support the theory and the results are experimentally evaluated using a custom MEMS PT and a CMOS rectification circuit. The results show that, while a PT is split into 8 regions connected in series, the performance while using a FBR and a SSHI circuit is increased by 2.3X and 5.8X, respectively, providing an entirely passive approach to improving energy conversion efficiency.
dc.description.sponsorshipUK Engineering and Physical Sciences Research Council (EPSRC) (Grant number: EP/L010917/1 and EP/N021614/1)
dc.identifier.doi10.17863/CAM.21160
dc.identifier.eissn1557-9948
dc.identifier.issn0278-0046
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/274073
dc.language.isoeng
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.publisher.urlhttp://dx.doi.org/10.1109/tie.2018.2798567
dc.subjectEnergy conversion
dc.subjectenergy harvesting
dc.subjectpiezoelectric transducers (PTs)
dc.subjectpower conditioning
dc.subjectrectifiers
dc.subjectseries connection
dc.subjectsplit electrode
dc.subjectsynchronized switch harvesting on an inductor (SSHI)
dc.titleA Passive Design Scheme to Increase the Rectified Power of Piezoelectric Energy Harvesters
dc.typeArticle
dcterms.dateAccepted2018-01-11
prism.endingPage7105
prism.issueIdentifier9
prism.publicationDate2018
prism.publicationNameIEEE Transactions on Industrial Electronics
prism.startingPage7095
prism.volume65
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/L010917/1)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/N021614/1)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/K000314/1)
rioxxterms.licenseref.startdate2018-09-01
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.typeJournal Article/Review
rioxxterms.versionAM
rioxxterms.versionofrecord10.1109/TIE.2018.2798567

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