The effects of bluff body vibration mode to the output performance response of the galloping triboelectric nanogenerator for wind energy harvesting

IF 4.1 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Sensors and Actuators A-physical Pub Date : 2025-05-10 DOI:10.1016/j.sna.2025.116662

Tianli Ma , Xiaojie Hu , Dingyi Wu , Shaolong Yang , Mengwei Wu , Tengfei Xie , Haiting Lv , Xiaoping Huang , Xianbo Xiang , Yan Wang

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Abstract

To continuously optimize the power generation performance of the wind energy harvesting galloping triboelectric nanogenerator (GTENG) based on the vibrating dielectric ball structure embedded in the bluff body, this study systematically studies the transition of bluff body vibration modes on power generation performance. A GTENG with adjustable system damping for harvesting broadband wind energy is proposed. Three distinct vibration modes are observed in six damping systems while Reynolds number is within 32500, which are single degree of freedom (DOF) mode, two DOF mode and deflected mode. The vibration mode ranges of six damping systems are determined by observing the vibration mode of the bluff body and measuring the peak and mean values of the output voltage and current. The instability of the two DOF vibration of the bluff body weakens the output performance of the GTENG. According to the analysis of experimental data, maintaining the single DOF vibration of the bluff body can improve the output performance of the GTENG under higher wind speed conditions. The results of this study can provide important guidance for dynamically adjusting the system damping under different wind speed conditions to optimize the output performance of GTENG.

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钝体振动模式对风力发电用驰骋摩擦纳米发电机输出性能响应的影响

为了持续优化基于振动介质球结构嵌入钝体的风能采集驰骋摩擦纳米发电机（GTENG）的发电性能，本研究系统地研究了钝体振动模式的转变对发电性能的影响。提出了一种具有可调系统阻尼的宽带风力发电系统。当雷诺数在32500以内时，6种阻尼系统的振动模式分别为单自由度模式、双自由度模式和偏转模式。通过观察钝体的振动模式，测量输出电压和电流的峰值和平均值，确定了六种阻尼系统的振动模态范围。钝体两自由度振动的不稳定性削弱了GTENG的输出性能。实验数据分析表明，保持钝体的单自由度振动可以提高GTENG在较高风速条件下的输出性能。研究结果可为在不同风速条件下动态调整系统阻尼以优化GTENG输出性能提供重要指导。

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来源期刊

Sensors and Actuators A-physical 工程技术-工程：电子与电气

CiteScore

8.10

自引率

6.50%

发文量

630

审稿时长

49 days

期刊介绍： Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas: • Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results. • Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon. • Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays. • Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers. Etc...