Design and Optimization of Backfolded Piezoelectric Microenergy Generators

Visa enkel post
dc.contributor.authorSjöström, Viktor
dc.contributor.departmentChalmers tekniska högskola / Institutionen för mekanik och maritima vetenskapersv
dc.contributor.examinerFolkow, Peter
dc.contributor.supervisorVyas, Agin
dc.date.accessioned2021-07-06T11:07:40Z
dc.date.available2021-07-06T11:07:40Z
dc.date.issued2021sv
dc.date.submitted2020
dc.description.abstractA piezoelectric micro generator is a device that is intended to supply power to a wireless internet of things (IoT) application. The generator accumulates power when undergoing mechanical stress by vibration from the surroundings. The micro generator is able to sustain power to the application without any external source of power. The objective is to propose a design for two different models that is optimized with respect to bandwidth, tolerance and low frequency spectrum. The first model is a single back folded beam stucture, while the second is a double folded beam structure. The optimisation was carried out with respect to resonant frequency analysis and frequency response of the design. The simulations were carried out with the finite element software COMSOL multiphysics 5.6 and post processed in Matlab. The total length, width of each beam and the length of the outer proof mass were the major factors in improvement of the bandwidth, tolerance and frequency spectrum. The final design of the single fold generator resulted in a bandwidth of 1181 Hz operating between 1100 and 2500 Hz with a tolerance of 236%. The final design of the double fold generator resulted in a bandwidth of at least 2500 Hz operating between 900 and 2500 Hz with a tolerance of 27.6% and 50.1%. The bandwidth for both models were calculated with respect to a 0.1V threshold.sv
dc.identifier.coursecodeMMSX30sv
dc.identifier.urihttps://hdl.handle.net/20.500.12380/303645
dc.language.isoengsv
dc.relation.ispartofseries2021:24sv
dc.setspec.uppsokTechnology
dc.subjectEnergy generatorsv
dc.subjectPiezoelectricsv
dc.subjectBandwidthsv
dc.titleDesign and Optimization of Backfolded Piezoelectric Microenergy Generatorssv
dc.type.degreeExamensarbete för masterexamensv
dc.type.uppsokH
local.programmeApplied mechanics (MPAME), MSc
Ladda ner
Original bundle
Visar 1 - 1 av 1
Bild (thumbnail)
Namn:
Chalmers_University_of_Technology_Master_s_Thesis_viksjos_update3 (002).pdf
Storlek:
1.51 MB
Format:
Adobe Portable Document Format
Beskrivning:
Ladda ner
License bundle
Visar 1 - 1 av 1
Bild (thumbnail)
Namn:
license.txt
Storlek:
1.51 KB
Format:
Item-specific license agreed upon to submission
Beskrivning:
Ladda ner
Samling
Examensarbeten för masterexamen