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This paper proposes a Dual-Cylinder Piezoelectric Energy Harvester (DC-PEH). The cylinders generate vortex-induced vibration under the action of wind, driving the cantilever beam to deform. During the vibration process, the cantilever beam produces two types of bending modes, namely U-shaped vibration and S-shaped vibration. According to the experimental results, as the wind speed increases, the output power of the DC-PEH first increases and then decreases. When the diameter of the cylinders at both ends of the DC-PEH is 36 mm and the wind speed is 4.3 m/s, the output power can reach 7.812 mW. [ABSTRACT FROM AUTHOR]

Aiming at the problem that the energy harvestaing efficiency of traditional piezoelectric energy harvester is not high enough. A zigzag-shaped beam vibration energy harvester was proposed, which has excellent output performance. The effects of external resistance, mass weight, excitation acceleration and mass placement position on the output performance of the harvester were researched using the experimental platform. The results show that under the condition of 100 kΩ, when the mass weight is 9 g and the acceleration is 0.3 g, the maximum output voltage and power are 19.98 V and 3.992 mW respectively. [ABSTRACT FROM AUTHOR]