A hybrid vibration energy harvester with integrated piezoelectric and electrostatic devices

被引:1
作者
Yang, Chunlai [1 ,2 ]
Li, Henian [1 ,2 ]
Tang, Ye [1 ,2 ]
Wang, Hai [1 ,2 ]
Lu, Yimin [1 ,2 ]
机构
[1] Anhui Polytech Univ, Sch Mech Engn, People, Wuhu 241000, Peoples R China
[2] Anhui Key Lab Adv Numer Control & Serv Technol, Wuhu 241000, Peoples R China
关键词
piezoelectric; electrostatic; vibration energy; hybrid energy harvester;
D O I
10.35848/1347-4065/acdbaa
中图分类号
O59 [应用物理学];
学科分类号
摘要
In recent years, energy harvesting technology has become a promising power supply method for low-power wireless sensor nodes. According to the application requirements of energy acquisition, a piezoelectric and electrostatic hybrid vibration energy harvester (HVEH) is proposed in this paper. Compared with other vibration energy harvesters, the proposed hybrid harvester is easier to miniaturize and integrate into a MEMS. The electromechanical coupling model of the hybrid harvester is established. The optimal design of the proposed harvester is carried out based on numerical simulation. The optimal matching impedance of piezoelectric and electrostatic modules are calculated based on numerical simulation and validated through experiments, which are 80-90 k omega and 15-20 M omega, respectively. The output power of the HVEH is increased by 0.04%, 0.08%, 0.102%, and 0.097%, when the excitation acceleration is 0.1 g, 0.15 g, 0.2 g, and 0.25 g, respectively, compared with the single piezoelectric module.
引用
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页数:12
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