Analyses of Power Output of Piezoelectric Energy-Harvesting Devices Directly Connected to a Load Resistor Using a Coupled Piezoelectric-Circuit Finite Element Method
| dc.contributor.author | Zhu, Meiling | - |
| dc.contributor.author | Worthington, Emma | - |
| dc.contributor.author | Njuguna, James A. K. | - |
| dc.date.accessioned | 2012-08-01T23:01:11Z | |
| dc.date.available | 2012-08-01T23:01:11Z | |
| dc.date.issued | 2009-07-31T00:00:00Z | - |
| dc.description.abstract | A coupled piezoelectric-circuit finite element model (CPC-FEM) is proposed for the first time to study the power output of a vibration-based piezoelectric vibration-based piezoelectric energy harvesting devices (EHDs) that is directly connected to a resistive load. Special focus is given to the effect of the resistive load value on the vibrational amplitude of the piezoelectric EHDs, and thus on the current, voltage, and power generated by the EHDs. In the literature, these outputs are widely assumed to be independent of the resistive load value for the reduction in complexity of modelling and simulation. The presented CPC-FEM uses a cantilever with sandwich structure and a seismic mass attached to the tip to study the following load characteristics of the EHD as a result of changing the resistive load value: (1) the electric outputs of the EHD: current through and voltage across the resistive load, (2) the power dissipated by the resistive load, (3) the vibration amplitude of tip displacement of the cantilever, and (4) the shift in resonant frequency of the cantilever. Investigation results shows significant dependences of the vibration characteristics of the piezoelectric EHDs on the externally connected resistive load are found, rather than independence as previously assumed in most literature. The CPC-FEM is capable of predicting the generated power output of the EHDs with different resistive load value while simultaneously calculating the effect of the resistive load value on the vibration amplitude. The CPC-FEM is invaluable for validating the performance of designed EHDs before fabrication and testing, thereby reducing the recurring costs associated with repeat fabrication and trials. In addition, the proposed CPC-FEM is potentially useful in device designs optimisations for maximal power generation. | en_UK |
| dc.identifier.citation | Meiling Zhu, Emma Worthington and James Njuguna. Analyses of Power Output of Piezoelectric Energy-Harvesting Devices Directly Connected to a Load Resistor Using a Coupled Piezoelectric-Circuit Finite Element Method. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, July 2009, Volume 56, Issue 7, pp1309-1317 | |
| dc.identifier.issn | 0885-3010 | - |
| dc.identifier.uri | http://dx.doi.org/10.1109/TUFFC.2009.1187 | - |
| dc.identifier.uri | http://dspace.lib.cranfield.ac.uk/handle/1826/7473 | |
| dc.publisher | IEEE Institute of Electrical and Electronics | en_UK |
| dc.rights | ©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. | |
| dc.subject | finite element method (FEM), vibration-based piezoelectric energy harvesting devices (EHDs), coupled piezoelectric-circuit (CPC), load characteristics | en_UK |
| dc.title | Analyses of Power Output of Piezoelectric Energy-Harvesting Devices Directly Connected to a Load Resistor Using a Coupled Piezoelectric-Circuit Finite Element Method | en_UK |
| dc.type | Article | - |