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首页> 外文期刊>Mathematical Problems in Engineering >Modeling of Piezoelectric Energy Harvesting from Freely Oscillating Cylinders in Water Flow
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Modeling of Piezoelectric Energy Harvesting from Freely Oscillating Cylinders in Water Flow

机译：水流中自由振荡的圆柱体收集压电能量的建模

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摘要

A concept of energy harvesting from vortex-induced vibrations of a rigid circular cylinder with two piezoelectric beams attached is investigated. The variations of the power levels with the free stream velocity are determined. A mathematical approach including the coupled cylinder motion and harvested voltage is presented. The effects of the load resistance, piezoelectric materials, and circuit combined on the natural frequency and damping of the vibratory system are determined by performing a linear analysis. The dynamic response of the cylinder and harvested energy are investigated. The results show that the harvested level in SS and SP&PS modes is the same with different values of load resistance. For four different system parameters, the results show that the bigger size of cylinder with PZT beams can obtain the higher harvested power.
机译：研究了从附有两个压电梁的刚性圆柱体的涡流激生振动中收集能量的概念。确定功率水平随自由流速度的变化。提出了一种数学方法，包括耦合的气缸运动和收集的电压。通过执行线性分析，可以确定负载电阻，压电材料和电路对固有频率和振动系统阻尼的影响。研究了圆柱体的动态响应和收集的能量。结果表明，SS和SP＆PS模式下的收获水平相同，负载电阻值不同。对于四个不同的系统参数，结果表明，带有PZT梁的圆柱体尺寸越大，可以获得越高的采集功率。

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  • 来源
    《Mathematical Problems in Engineering》 |2014年第21期|985360.1-985360.13|共13页
  • 作者

    Zhang Min; Liu YingZheng; Cao ZhaoMin;

  • 作者单位

    Chongqing Jiaotong Univ, Maritime Coll, Chongqing 40074, Peoples R China.;

    Shanghai Jiao Tong Univ, Sch Mech Engn, Key Lab Educ Minist Power Machinery & Engn, Shanghai 200240, Peoples R China.;

    Shanghai Jiao Tong Univ, Sch Mech Engn, Key Lab Educ Minist Power Machinery & Engn, Shanghai 200240, Peoples R China.;

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