An Efficient Inductorless Dynamically Configured Interface Circuit for Piezoelectric Vibration Energy Harvesting

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cam.issuedOnline2016-07-07
dc.contributor.authorDu, S
dc.contributor.authorJia, Y
dc.contributor.authorSeshia, AA
dc.contributor.orcidDu, Sijun [0000-0001-6238-4423]
dc.contributor.orcidSeshia, Ashwin [0000-0001-9305-6879]
dc.date.accessioned2017-08-15T10:46:24Z
dc.date.available2017-08-15T10:46:24Z
dc.date.issued2017-07-07
dc.description.abstractVibration energy harvesting based on piezoelectric materials is of interest in several applications such as in powering remote distributed wireless sensor nodes for structural health monitoring. Synchronized switch harvesting on inductor and synchronous electric charge extraction circuits show good power efficiency among reported power management circuits; however, limitations exist due to inductors employed, adaption of response to varying excitation levels, and the synchronized switch damping (SSD) effect. In this paper, an inductorless dynamically configured interface circuit is proposed, which is able to configure the connection of two piezoelectric materials in parallel or in series by periodically evaluating the ambient excitation level. The proposed circuit is designed and fabricated in a 0.35 μHV CMOS process.The fabricated circuit is cointegrated with a piezoelectric bimorph energy harvester and the performance is experimentally validated. With a low power consumption (0.5 μW), the measured results show that the proposed rectifier can provide a 4.5 × boost in harvested energy compared to the conventional full-bridge rectifier without employing an inductor. It also shows a high power efficiency over a wide range of excitation levels and is less susceptible to SSD.
dc.description.sponsorshipEngineering and Physical Sciences Research Council
dc.description.versionThis is the author accepted manuscript. The final version is available from IEEE via http://dx.doi.org/10.1109/TPEL.2016.2587757
dc.identifier.doi10.17863/CAM.9827
dc.identifier.eissn1941-0107
dc.identifier.issn0885-8993
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/266382
dc.languageEnglish
dc.language.isoen
dc.publisherIEEE
dc.publisher.urlhttps://ieeexplore.ieee.org/document/7505594
dc.subjectEnergy harvesting
dc.subjectpiezoelectric transducer (PT)
dc.subjectpower conditioning
dc.subjectrectifier
dc.titleAn Efficient Inductorless Dynamically Configured Interface Circuit for Piezoelectric Vibration Energy Harvesting
dc.typeArticle
dcterms.dateAccepted2016-06-22
prism.publicationDate2016
prism.publicationNameIEEE Transactions on Power Electronics
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/K000314/1)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/L010917/1)
rioxxterms.licenseref.startdate2016-07-07
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.typeJournal Article/Review
rioxxterms.versionAM
rioxxterms.versionofrecord10.1109/TPEL.2016.2587757
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