在风引起的振动下,切断的压电束能量收获器的实验
Xuhong Fan1, Chongming Zhao1, Wenan Jiang1
1Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China.
Micromachines
|April 26, 2025
概括
本研究介绍了用于风力发电的两度自由度 (2-DOF) 压电式能源收割机. 新的切断束设计显著提高了输出电压,为物联网 (IoT) 设备供电提供了一个有前途的解决方案.
科学领域:
- 收集能源 收集能源
- 材料科学 材料科学 材料科学
- 空气动力学 航空动力学
背景情况:
- 传统的单度自由度 (SDOF) 压电式能源收割机存在低电机械转换效率的问题.
- 风引起的振动是环境能量收集的潜在来源.
- 可靠的电源对于远程或复杂环境中的物联网 (IoT) 节点至关重要.
研究的目的:
- 提出和评估一个两度自由度 (2-DOF) 的切断压电束,以加强风能采集.
- 将拟议的收割机的性能与传统设计进行比较.
- 评估收割机适合为物联网节点供电.
主要方法:
- 设计和制造一个2DOF切断的压电束能量收获器.
- 使用四个不同的悬崖体进行实验测试,以评估空气动力学稳定性和振动响应.
- 在不同风速下测量输出电压.
- 切割设计与非切割压电束的比较.
主要成果:
- 三角形柱状的悬崖体表现出优越的空气动力学稳定性.
- 在7.0m/s的风速下,通过三角柱实现了11.6V的输出电压.
- 与非切断版本相比,2-DOF切断压电束的输出电压增加了1.9倍.
- 拟议的设计显示了从风振动中有效转换能源的巨大潜力.
结论:
- 2-DOF切断压电束是一种有效的设计,用于提高风能采集中的机电转换效率.
- 这项技术为物联网节点在具有挑战性的操作环境中提供了可行的自主电源解决方案.
- 进一步的研究可以探索更广泛的环境条件和应用的优化.
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