improving the power out of a piezoelectric energy harvester using segmented electrodes
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ID: 257436
2017
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Abstract
Vibration-based EH (Energy Harvesting) using piezoelectric materials have been investigated by several
research groups with the aim of harvesting maximum energy and providing power to low-powered wireless
electronic systems for their entire operational life. The main areas of research includes improvements
in mathematical modelling, optimization of harvester geometry, developments in electrical circuitry,
advancements in charge storage devices and investigating various piezoelectric materials to achieve
maximum power output. This paper investigates and compares the electrical power output with whole
length electrodes and with segmentation of electrodes for the same harvester length. It is found that the
voltage generated by one electrode of length l/2 of the direction-fixed tip system is significantly greater
than that produced by one electrode of length l of the free tip system. This paper also verifies the fact that
segmentation of electrodes reduces the effect of strain nodes and charge cancellation particularly at
higher mode frequencies. The paper presents the simulation results using DSM (Dynamic Stiffness
Matrix) which is a compact method of modelling piezoelectric beams
| Reference Key |
rafique2017mehranimproving
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|---|---|
| Authors | ;SAJID RAFIQUE;SADIQ ALI SHAH |
| Journal | parkinson's disease |
| Year | 2017 |
| DOI |
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