Abstract
This work presents a small-scale wideband piezomagnetoelastic vibration energy harvester (VEH) aimed for operation at frequencies of a few hundred Hz. The VEH consists of a tape-casted PZT cantilever with thin sheets of iron foil attached on each side of the free tip. The wideband operation is achieved by placing the cantilever in a magnetic field induced by either one or two magnets located oppositely of the cantilever. The attraction force created by the magnetic field and iron foils introduces a mechanical force in opposite direction of the cantilevers restoring force causing a spring softening effect. In linear operation (without magnets) the harvester generates a RMS power of 141 μW/g2 at 588 Hz with a relative bandwidth of 3.8% over a 100 kΩ load resistor. When operated with one magnet ideally positioned opposite the cantilever, a RMS power of 265 μW/g2 is generated at 270 Hz with a relative bandwidth of 25%.
| Original language | English |
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| Book series | Journal of Physics: Conference Series (Online) |
| Volume | 557 |
| Issue number | 1 |
| Pages (from-to) | 012121 |
| Number of pages | 5 |
| ISSN | 1742-6596 |
| DOIs | |
| Publication status | Published - 2014 |
| Event | 14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications - Awaji Yumebutai International Conference Center, Awaji Island, Hyogo, Japan Duration: 18 Nov 2014 → 21 Nov 2014 Conference number: 14 |
Conference
| Conference | 14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications |
|---|---|
| Number | 14 |
| Location | Awaji Yumebutai International Conference Center |
| Country/Territory | Japan |
| City | Awaji Island, Hyogo |
| Period | 18/11/2014 → 21/11/2014 |