Influence of Potential Well Depth on Power Generation Performance of Bistable Electromagnetic Energy Harvesting Systems

ZHANG Xiao-jing; LIU Li-lan; REN Bo-lin; LI Shu-chao

doi:10.21656/1000-0887.370246

Volume 38 Issue 6

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ZHANG Xiao-jing, LIU Li-lan, REN Bo-lin, LI Shu-chao. Influence of Potential Well Depth on Power Generation Performance of Bistable Electromagnetic Energy Harvesting Systems[J]. Applied Mathematics and Mechanics, 2017, 38(6): 622-632. doi: 10.21656/1000-0887.370246

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Influence of Potential Well Depth on Power Generation Performance of Bistable Electromagnetic Energy Harvesting Systems

doi: 10.21656/1000-0887.370246

School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, P.R.China

Funds: The National Natural Science Foundation of China（11572243）

Received Date: 2016-08-05
Rev Recd Date: 2016-09-06
Publish Date: 2017-06-15

Abstract

Abstract

With the development of the electromagnetic vibration energy harvesting technology from single-to multi-stable-state systems, the response frequency bandwidth was broadened and the output voltage was increased, hence better power generation performance was obtained. The bistable electromagnetic vibration energy harvester with a linear vibrator was investigated, the effects of potential well depth on the power generation performance was studied, and the influences of the system structure parameters of the mass ratio and the tuning ratio were analyzed based on the potential well depth under the optimal power performance. Numerical simulation results show that, when the external excitation is at low frequencies, the potential well depth will be larger, and the vibrator of the bistable system can only work in small vibration; when the potential well depth is small to a certain extent, the vibrator will enter large chaotic or periodic motion across the barrier between 2 potential wells, with the average output power higher than that during the small motion. Through numerical simulation, the optimal mass ratio, tuning ratio and damping ratio of the system were obtained.
- bistable system,
- potential well depth,
- mass ratio,
- tuning ratio,
- average output power

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References(16)

References

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