Piezoelectric Energy Harvesting from Suspension Structures with Piezoelectric Layers
1
School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
2
Shanghai Institute of Intelligent Science and Technology, Tongji University, Shanghai 200092, China
3
Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(13), 3755; https://doi.org/10.3390/s20133755
Received: 8 June 2020
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Revised: 28 June 2020
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Accepted: 30 June 2020
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Published: 4 July 2020
(This article belongs to the Section Electronic Sensors)
In this paper, we propose a generator for piezoelectric energy harvesting from suspension structures. This device consists of a leaf spring and eight pairs of piezoelectric layers attached to inner and outer surfaces. We present a special type of leaf spring, which can magnify the force from the workload to allow the piezoelectric layers to achieve larger deformation. The generator is to solve the problem of vibration energy reutilization in a low-frequency vibration system. To verify the efficiency of the proposed configuration, a series of experiments are operated. The results indicate that the resonance frequency (25.2 Hz) obtained from the sweep experiment is close to the simulation result (26.1 Hz). Impedance-matching experiments show that the sum of the output power attains 1.7 mW, and the maximum single layer reaches 0.6 mW with an impedance matching of 610 KΩ, and the instantaneous peak-peak power density is 3.82 mW/cm3. The capacitor-charging performance of the generator is also excellent under the series condition. For a 4.7 μF capacitor, the voltage is charged to 25 V in 30 s and limited at 32 V in 80 s. These results demonstrate the exploitable potential of piezoelectric energy harvesting from suspension structures.
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Keywords:
suspension structures; piezoelectric ceramics; energy harvesting; low-frequency vibration system; bending mode
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MDPI and ACS Style
Wang, M.; Xia, Y.; Pu, H.; Sun, Y.; Ding, J.; Luo, J.; Xie, S.; Peng, Y.; Zhang, Q.; Li, Z. Piezoelectric Energy Harvesting from Suspension Structures with Piezoelectric Layers. Sensors 2020, 20, 3755. https://doi.org/10.3390/s20133755
AMA Style
Wang M, Xia Y, Pu H, Sun Y, Ding J, Luo J, Xie S, Peng Y, Zhang Q, Li Z. Piezoelectric Energy Harvesting from Suspension Structures with Piezoelectric Layers. Sensors. 2020; 20(13):3755. https://doi.org/10.3390/s20133755
Chicago/Turabian StyleWang, Min, Yiming Xia, Huayan Pu, Yi Sun, Jiheng Ding, Jun Luo, Shaorong Xie, Yan Peng, Quan Zhang, and Zhongjie Li. 2020. "Piezoelectric Energy Harvesting from Suspension Structures with Piezoelectric Layers" Sensors 20, no. 13: 3755. https://doi.org/10.3390/s20133755
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