Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Design and research of piezoelectric energy harvester in wind induced and vibration environment
| DOI: | 10.11809/bqzbgcxb2023.10.002 |
| Keywords: | submunition; wind induced environment; vibration environment; piezoelectric energy harvester; output performance |
| Abstract: | A piezoelectric energy harvester under wind induced and vibration environment is designed to address the self energy supply problem of the submunition, and the self energy harvesting technology of submunition in peacetime and wartime is studied. Based on the piezoelectric effect equation and the lumped parameter method, a theoretical model analysis of the piezoelectric energy harvester is conducted, and the theoretical value of the output voltage in vibration and wind induced environment is obtained. An experimental prototype is made to test the vibration characteristics of the piezoelectric energy harvesting unit and its output performance in wind induced environments. The effectiveness of the theoretical model is verified by comparing theoretical values. At the same time, the effects of vibration frequency, wind speed, and fan blade angle on the output performance of piezoelectric energy harvesting units are investigated. The experimental results show that the resonant frequency of the piezoelectric energy harvesting structure is 43 Hz, and the optimal load is 170 kΩ. When the fan blade angle is 30°, the output performance of the piezoelectric energy harvester is the best. When resonance occurs, the peak output voltage can reach 22 V , with a maximum output power of 1.38 mW. At a wind speed of 15 m/s, the output voltage is 2.56 V. |
| Issue: | Vol. 44 No. 10 (2023) |
| Published: | 2023-10-28 |
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