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首页> 外文期刊>Mechanical systems and signal processing >Energy harvesting for autonomous thermal sensing using a linked E-shape multi-beam piezoelectric device in a low frequency rotational motion
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Energy harvesting for autonomous thermal sensing using a linked E-shape multi-beam piezoelectric device in a low frequency rotational motion

机译：在低频旋转运动中使用连接的电子形式多束压电装置进行自主热敏的能量收集

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摘要

This paper presents a multi-beam energy harvester (MBT2ML) capable to convert kinetic energy from rotational motion at low frequency (<3 Hz) into usable electricity. The energy conversion is achieved by using a piezoelectric material MFC 8507 P2. The MBT2ML consists of two E-shape aluminum beams linked by a rigid steel beam. The multiple beams have attached masses made in steel at the free ends and a piezoelectric sheet MFC 8507-P2 bonded on one of the beams of the superior multi-beam trident. The MBT2ML is used to power an autonomous sensing system comprised by a storage device, a full bridge rectifier, a power conditioning circuit and a thermal sensor. The design of an energy harvester applied to monitoring the structural health of wind turbines of 30 kW is really a challenge from a physical viewpoint, due to drawbacks associated to extremely low operational frequencies (<3 Hz). For example, the output power is ruled by a cubic dependence on frequency and a linear dependence on mass, displacement and amplitude of excitation. The obtained data from the thermal sensor is transmitted to a notebook by a wireless data acquisition system (WDAS). The proposed harvester is a unique design which presents (ⅰ) low natural frequency into a compact size and (ⅱ) the resonant frequency that closely matches the operating frequency to achieve maximum power generation. An experimentally validated nonlinear one-dimensional finite element formulation is used to investigate the effects of rotational motion on the electromechanical response of the harvester. The harvesting performance of the MBT2ML is assessed through varying the load resistance, the hub distances, the rotation speed (from 0 to 3 Hz), the position of the piezoelectric material and the electric connections (series and parallel) between two MFC 8507 P2 patches. The experimental results showed that the proposed harvester provides sufficient energy for supplying electric energy to a thermal sensor LM335Z during an active time of 1.01 s (delivering 200 readings) for each 38.53 s. This clearly indicates that our proposal of energy harvester provides sufficient electric power to a sensing system in a low frequency rotation scenario such as the one of wind turbines of 30 kW.
机译：本文介绍了一种能够将低频（<3 Hz）的旋转运动转换为可用电力的多光束能量收割机（MBT2ML）。通过使用压电材料MFC 8507 P2来实现能量转换。 MBT2ML由两个由刚性钢梁连接的电子形铝束组成。多个光束在自由端的钢中具有附着的块，并且压电片MFC 8507-P2粘合在上部多束三叉戟的一个梁上。 MBT2ML用于为由存储设备，全桥式整流器，功率调节电路和热传感器组成的自主传感系统供电。应用于监测30 kW的风力涡轮机结构健康的能量收割机的设计是从物理观点的挑战，这是由于与极低的操作频率（<3 Hz）相关联。例如，输出功率通过对频率的立方依赖性和对质量，位移和激励幅度的线性依赖性统治。来自热传感器的获得数据通过无线数据采集系统（WDA）发送到笔记本电脑。所提出的收割机是一种独特的设计，将（Ⅰ）低自然频率进入紧凑的尺寸和（Ⅱ）谐振频率，与工作频率紧密匹配，实现最大发电。实验验证的非线性一维有限元配方用于研究旋转运动对收割机机电响应的影响。通过改变负载电阻，轮毂距离（0至3 Hz），压电材料的位置和两个MFC 8507 P2贴片之间的电连接（串联和并联）进行评估MBT2ML的收获性能。 。实验结果表明，所提出的收割机提供足够的能量，用于在每次38.53秒的有效时间内为热传感器LM35z提供电能到热传感器LM35Z。这清楚地表明，我们的能量收割机的提议在低频旋转场景中为传感系统提供足够的电力，例如30 kW的风力涡轮机。

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  • 来源
    《Mechanical systems and signal processing》 |2019年第1期|106267.1-106267.21|共21页
  • 作者

    J.M. Ramirez; CD. Gatti; S.P. Machado; M. Febbo;

  • 作者单位

    Consejo National de Investigations Cientificas y Tecnicas (CONICET) Crupo de Investigation en Multifisica Aplicada (GIMAP) Universidad Tecnologica National FRBB (UTN) 11 de Abril 461 8000 Bahxa Blanca Argentina;

    Consejo National de Investigations Cientificas y Tecnicas (CONICET) Crupo de Investigation en Multifisica Aplicada (GIMAP) Universidad Tecnologica National FRBB (UTN) 11 de Abril 461 8000 Bahxa Blanca Argentina;

    Consejo National de Investigations Cientificas y Tecnicas (CONICET) Crupo de Investigation en Multifisica Aplicada (GIMAP) Universidad Tecnologica National FRBB (UTN) 11 de Abril 461 8000 Bahxa Blanca Argentina;

    Instituto de Fisica del Sur (IFISUR) Consejo National de Investigations Cientificas y Tecnicas (CONICET) and Departamento de Fisica Universidad National del Sur (UNS) Av. Alem 1253 8000 Bahia Blanca Argentina;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Non linear finite element; Energy harvesting; MFC piezoelectric material; Low frequency;

    机译：非线性有限元;能量收集;MFC压电材料;低频;

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