Show simple item record

dc.contributor.advisorSanchez-SInencio, Edgar
dc.creatorRibeiro, Roland
dc.date.accessioned2015-04-28T15:21:57Z
dc.date.available2016-12-01T06:36:07Z
dc.date.created2014-12
dc.date.issued2014-10-23
dc.date.submittedDecember 2014
dc.identifier.urihttp://hdl.handle.net/1969.1/153872
dc.description.abstractThe energy harvesting industry has seen steady growth in recent years. This growth has been driven by the increasing demand for remote sensing, implantable technologies, and increased battery life in mobile and hand held devices. Due to the limited amount of energy available from ambient sources, any system that attempts to harness energy from them should necessarily be highly efficient to make the net output power useful. A lot of work has been done on minimizing losses in piezoelectric energy harvesters. Most of this has however been limited to harvesters with single vibration sources or multiple sources vibrating synchronously. This work presents a multiple input piezoelectric energy harvester capable of harvesting from multiple piezoelectric energy sources vibrating asynchronously (at different frequencies, or at the same frequency but in different phases) using a single inductor. The use of a single inductor eliminates the extra quiescent power consumption, component count, printed circuit board real estate that would have been incurred by using a one inductor per input device. The inductor is time shared between three input devices using a digital control circuit which regulate access to the inductor while avoiding any destructive interaction between the input devices. The chip was designed in a 0.18µm technology and achieves a conversion efficiency of 60%. Testing with three asynchronously vibrating sources shows that the chip extracts maximum power from all inputs simultaneously, independent of vibration frequency or phase.en
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.subjectenergy harvestingen
dc.subjectpiezoelectricen
dc.subjectmultiple sourcesen
dc.subjectasynchronouslyen
dc.titleA Single Inductor, Multiple Input Piezoelectric Interface Circuit Capable of Harvesting Energy from Asynchronously Vibrating Sourcesen
dc.typeThesisen
thesis.degree.departmentElectrical and Computer Engineeringen
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorTexas A & M Universityen
thesis.degree.nameMaster of Scienceen
thesis.degree.levelMastersen
dc.contributor.committeeMemberKarsilayan, Aydin I
dc.contributor.committeeMemberEnjeti, Prasad
dc.contributor.committeeMemberMuliana, Anastasia
dc.type.materialtexten
dc.date.updated2015-04-28T15:21:57Z
local.embargo.terms2016-12-01
local.etdauthor.orcid0000-0003-2498-7981


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record