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| Modeling and Simulation of Bimorph Cantilever Beam Piezoelectric Power Generation Device |
| JIA Xiaoxi1**，KONG Fanxing2*
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| 1.School of Information and Control Engineering, Jilin Institute of Chemical Technology, Jilin City 132022, China;2 School of Mechanical and Electrical Engineering, Jilin Institute of Chemical Technology, Jilin City 132022 China |
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Abstract As a rich and renewable energy source, wave energy is not affected by seasons, time or climatic conditions, and has relatively stable energy output and high utilization potential. To capture and utilize more low-frequency energy in waves and improve power generation efficiency, a small float structure power generation device is proposed through the analysis and research of the characteristics of existing power generation devices, the energy characteristics of waves and the principle of piezoelectric effect. This device utilizes the vibration of the cantilever beam caused by the magnetic force between magnets, and uses springs and piezoelectric oscillators to increase the frequency, collecting and converting wave energy. Through simulation calculations, the influence curves of structural parameters on voltage and power generation capacity are obtained, and the relationship between the length of the cantilever beam, the natural frequency and the output voltage of the device is simulated and analyzed by Comsol, and the laws of the first-order natural frequency and output voltage of the system with the change of the length of the cantilever beam and external force are obtained. According to the characteristics of waves and simulation results, the system parameters are optimized to improve the power generation capacity of the small portable device, to meet the energy supply problems in remote areas such as the far sea and isolated islands. At the same time, this small magnetic cantilever vibration piezoelectric power generation device has a simple structure, small volume, and is easy to carry and use.
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Published: 21 December 2025
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