An elliptic gauge-inspired piezoelectric energy harvester for wind turbines

IF 4.9 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Sensors and Actuators A-physical Pub Date : 2025-08-28 DOI:10.1016/j.sna.2025.117011

Fugang Dong , Yuqiao Zheng , Chenglong Shi , Yongyong Cao , Yanqiang Zhang

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引用次数: 0

Abstract

This work proposes a novel piezoelectric energy harvester inspired by an elliptical gauge design, capable of efficiently capturing mechanical energy from ultra-low frequency and horizontal directional vibrations in wind turbines and converting it into electrical energy to wirelessly power low-power sensors. The elliptic gauge-inspired piezoelectric energy harvester (EGPEH) comprises a cross-shaped sliding rail, permanent magnets, and the piezoelectric beam (PB), with the system’s dynamics incorporating the combined effects of magnetic force and geometric nonlinearity in the pre-buckled state of PB. A comprehensive dynamic model is developed using the energy method and Lagrange equations, validated through numerical analysis and experimental testing. The motion characteristics and power generation performance of the system are investigated within the first modal frequency range (0.4 Hz to 0.7 Hz) of wind turbines. The effect of the size parameters on the electrical performance of the device under wind turbine operating conditions is investigated through parametric analysis of the system. The results indicate that EGPEH can generate up to 980.3 µW peak output power in the optimal configuration. This work provides a promising method for harvesting energy from ultra-low frequency and horizontal direction vibrations, and has potential application value in powering low-power sensors in wind turbines and other infrastructures.

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用于风力涡轮机的椭圆式压电能量收集器

这项工作提出了一种受椭圆规设计启发的新型压电能量采集器，能够有效地从风力涡轮机的超低频率和水平方向振动中捕获机械能，并将其转化为电能，以无线方式为低功耗传感器供电。椭圆规式压电能量采集器（EGPEH）由十字形滑轨、永磁体和压电梁（PB）组成，在PB预曲状态下，系统动力学综合了磁力和几何非线性的影响。利用能量法和拉格朗日方程建立了综合动力学模型，并通过数值分析和实验验证了模型的正确性。研究了该系统在风力机第一模态频率范围（0.4 Hz ~ 0.7 Hz）内的运动特性和发电性能。通过对系统的参数分析，研究了风力发电机组运行工况下，各尺寸参数对装置电性能的影响。结果表明，在最佳配置下，EGPEH可产生高达980.3 µW的峰值输出功率。这项工作为从超低频率和水平方向振动中收集能量提供了一种有前途的方法，并且在为风力涡轮机和其他基础设施中的低功率传感器供电方面具有潜在的应用价值。

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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...