Research of rotating piezoelectric energy harvester for automotive motion

Gang Yu, Lipeng He, Hongxin Wang, Lei Sun, Zhonghua Zhang and Guangming Cheng

Renewable Energy, 2023, vol. 211, issue C, 484-493

Abstract: This paper proposes a rotating piezoelectric energy harvester for automotive motion (PEH). A mechanical tuning method is used to optimize the output performance of the harvester, including changing the tip mass of the piezoelectric cantilever beam and the base mass. The motion state and natural frequency were analyzed by simulation. An electromechanical coupling model was established through Hamilton's principle and Bernoulli beam theory to theoretically analyze the movement state of the PEH. The power generation performance of PEH under different environmental excitations was tested by experimental methods, and the effect of self-excited vibration on its power generation performance was investigated to test the output variation of the system under different speed changes. Experiments show that when the pulse frequency of the stepper motor is 1700Hz, the tip mass of the piezoelectric cantilever beam is 5.6g, the rotation angle of the support is 0°, the counterweight of the base is 31.6g, and the resistance is 1kΩ, respectively, the harvester output power can reach 6.25 mW. Finally, Finally, the future development of harvester is discussed.

Keywords: Piezoelectric energy harvester; Tunable; Self-excited vibration; Rotational speed change (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:211:y:2023:i:c:p:484-493

DOI: 10.1016/j.renene.2023.05.030

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