A pendulum based frequency-up conversion mechanism for vibrational energy harvesting in low-speed rotary structures

IF 2.4 3区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Intelligent Material Systems and Structures Pub Date : 2024-05-28 DOI:10.1177/1045389x241232044
Weijie Xian, Soobum Lee
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Abstract

Motivated to run a self-powering monitoring sensor on a wind turbine blade, this paper proposes a pendulum based frequency-up converter that effectively captures a low-speed mechanical rotation into high-frequency vibration of a piezoelectric cantilever beam. A system of governing equations for the proposed concept is developed to describe the motion of the pendulum, the vibration of the beam, and the voltage output of the harvester. Design optimization is performed to improve the power generation performance, and the simulation results are verified experimentally. We demonstrate the improved power density from the proposed concept compared to the disk driven frequency-up converters.
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用于低速旋转结构振动能量收集的基于摆锤的频率提升转换机制
为了在风力涡轮机叶片上运行自供电监测传感器,本文提出了一种基于钟摆的变频器,它能有效地将低速机械旋转转化为压电悬臂梁的高频振动。本文为所提出的概念建立了一套控制方程,用于描述摆锤的运动、悬臂梁的振动和收割机的电压输出。我们对设计进行了优化,以提高发电性能,并对模拟结果进行了实验验证。我们证明,与圆盘驱动的变频器相比,所提出的概念提高了功率密度。
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来源期刊
Journal of Intelligent Material Systems and Structures
Journal of Intelligent Material Systems and Structures 工程技术-材料科学:综合
CiteScore
5.40
自引率
11.10%
发文量
126
审稿时长
4.7 months
期刊介绍: The Journal of Intelligent Materials Systems and Structures is an international peer-reviewed journal that publishes the highest quality original research reporting the results of experimental or theoretical work on any aspect of intelligent materials systems and/or structures research also called smart structure, smart materials, active materials, adaptive structures and adaptive materials.
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