Abstract
Improving the energy harvesting efficiency is currently of topical interest. A novel hybrid energy harvester integrated with piezoelectric and electromagnetic effects was presented. The corresponding governing equations were derived and its nonlinear dynamics and coherence resonance were investigated. The dynamical behaviors of the hybrid energy harvester were explored by using the Runge-Kutta and Euler-Maruyama methods when it is subjected to deterministic and stochastic excitations. The experimental results show that the hybrid energy harvesting system, which combines the mechanisms of piezoelectric and electromagnetic effects, has a better scavenging performance when it reaches the state of coherence resonance. In addition, the results reveal that it is possible to improve the energy harvesting efficiency and output voltage by optimizing the structure's parameters.
| Original language | English |
|---|---|
| Pages (from-to) | 119-124 and 139 |
| Journal | Zhendong yu Chongji/Journal of Vibration and Shock |
| Volume | 35 |
| Issue number | 14 |
| DOIs | |
| State | Published - 28 Jul 2016 |
Keywords
- Coherence resonance
- Energy harvesting system
- Random excitation