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Development of a Non-Linear Bi-Directional Vortex-Induced Piezoelectric Energy Harvester with Magnetic Interaction
| Content Provider | MDPI |
|---|---|
| Author | Su, Wei-Jiun Wang, Zong-Siang |
| Copyright Year | 2021 |
| Description | In this study, magnetic force is introduced to the design of a bi-directional U-shaped piezoelectric energy harvester for vortex-induced vibrations. The theoretical model of the beam structure is derived based on the Euler–Bernoulli beam theory. The vortex-induced vibration and the non-linear magnetic force are modeled according to the Rayleigh oscillator and the charge model, respectively. A prototype is fabricated and tested in two orthogonal directions under vortex-induced vibrations in a wind tunnel. Up and down wind-speed sweeps are carried out to investigate the non-linear responses of the harvester. The distance between the magnets and the length of the side beams are adjusted to examine the influence of the magnetic force on the lock-in region and voltage output of the harvester. Overall, the harvester shows strong non-linearity in the horizontal excitations. After adding magnets to the system, significant improvement of the lock-in region and the peak voltage is noticed in the horizontal mode under both up and down sweeps. |
| Starting Page | 2299 |
| e-ISSN | 14248220 |
| DOI | 10.3390/s21072299 |
| Journal | Sensors |
| Issue Number | 7 |
| Volume Number | 21 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-03-25 |
| Access Restriction | Open |
| Subject Keyword | Sensors Energy and Fuel Technology Piezoelectric Energy Harvester Bi-directional Vortex-induced Vibration Magnetic Interaction Nonlinearity |
| Content Type | Text |
| Resource Type | Article |
