With the ongoing evolution of microelectronic devices toward lower power consumption, the utilization of piezoelectric materials for energy harvesting from wind-induced vibrations has garnered considerable attention. This study employs a combined approach involving finite element analysis and experiments to investigate the energy harvesting efficiency of the multi-stable piezoelectric wind energy harvester (MPWEH) and compares its performance with two alternative systems. The MPWEH demonstrates higher strains in both the x and y directions during reciprocating cross-well vibrations, establishing its superior energy harvesting efficiency compared to the alternative systems. Notably, at a wind speed of 8 m s⁻¹, the MPWEH generates an output power nearly six times higher than local bistable piezoelectric energy harvester (LBPEH). The MPWEH achieves the maximum power density of 9.8125 mW cm⁻³, whereas the LBPEH registers the power density of 1.625 mW cm⁻³. The experimental results indicate that, under the optimal load resistance of 40 kΩ and a wind speed of 14 m s⁻¹, the MPWEH achieves a peak output power of 2.76 mW, with a power density of 17.25 mW cm⁻³. The versatile applicability of the MPWEH extends across various low-power consumption microelectronic devices, positioning it as a valuable candidate for empowering continuous monitoring sensors in diverse domains.

中文翻译：

---

利用多稳态压电系统增强风能收集

随着微电子设备不断向低功耗方向发展，利用压电材料从风引起的振动中收集能量已引起了相当大的关注。本研究采用有限元分析和实验相结合的方法来研究多稳态压电风能收集器 (MPWEH) 的能量收集效率，并将其性能与两种替代系统进行比较。 MPWEH 显示出较高的应变X和y井间往复振动过程中的方向，与替代系统相比，确立了其卓越的能量收集效率。值得注意的是，在风速为 8 ms ^-1时，MPWEH 产生的输出功率比局部双稳态压电能量收集器 (LBPEH) 高出近六倍。 MPWEH 实现了 9.8125 mW cm ^-3的最大功率密度，而 LBPEH 的功率密度为 1.625 mW cm ^-3。实验结果表明，在最佳负载电阻40 kΩ、风速14 ms ^-1下，MPWEH的峰值输出功率为2.76 mW，功率密度为17.25 mW cm ^-3。 MPWEH 的多功能适用性扩展到各种低功耗微电子设备，使其成为支持不同领域连续监测传感器的有价值的候选者。