Study on the Power Generation Performance of Piezoelectric Energy Harvester with Dual Variable Cross-Section Wind Columns

ZHANG Senrong; HOU Yan; SONG Rujun; ZHANG Dan; ZHANG Leian

doi:10.7652/xjtuxb202601022

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Study on the Power Generation Performance of Piezoelectric Energy Harvester with Dual Variable Cross-Section Wind Columns

Special Topic Pollution Control and Resource Utilization in the “Dual Carbon”Context | 更新时间：2026-01-15

- Study on the Power Generation Performance of Piezoelectric Energy Harvester with Dual Variable Cross-Section Wind Columns
- Journal of Xi'an Jiaotong University Vol. 60, Issue 1, Pages: 223-232(2026)
- 作者机构：
  
  山东理工大学机械工程学院，255000，山东淄博
  山东理工大学电气与电子工程学院，255000，山东淄博
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202601022
  CLC： TM619;TH113.1
- Received：02 April 2025，
  
  Published：10 January 2026
- 稿件说明：
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ZHANG Senrong, HOU Yan, SONG Rujun, et al. Study on the Power Generation Performance of Piezoelectric Energy Harvester with Dual Variable Cross-Section Wind Columns[J]. Journal of Xi'an Jiaotong University, 2026, 60(1): 223-232.
DOI：

ZHANG Senrong, HOU Yan, SONG Rujun, et al. Study on the Power Generation Performance of Piezoelectric Energy Harvester with Dual Variable Cross-Section Wind Columns[J]. Journal of Xi'an Jiaotong University, 2026, 60(1): 223-232. DOI： 10.7652/xjtuxb202601022.

摘要

为了研究风柱的变截面设计对俘能器振动特性及俘能效果的影响，提出了一种双变截面风柱压电俘能器。该设计针对风致振动环境下的能量进行俘获，通过激振试验和风洞试验分别研究了俘能器在振动激励和涡激振动条件下的振动特性与发电性能。俘能器由悬臂梁、压电片及两侧变截面风柱构成，设计了3种安装方式（正-正、反-反、正-反），探究负载电阻、激振频率、加速度及风速对输出性能的影响。激振试验与风洞试验结果表明：最佳负载电阻为80kΩ，正-正安装方式在4.7 m/s风速下输出功率最高达4.06 mW，显著优于同类研究。对称结构（正-正、反-反）因同步振动模式能提升压电片形变的叠加效应，在外部振动激励下的发电性能优于非对称结构（正-反）；反装结构可降低装置的固有频率与启动风速，但在风洞试验中对涡流利用效率较低。激振加速度增大可显著提高俘能器的发电性能。该研究为风致振动环境下的高效能量采集提供了新思路，拓展了变截面风柱压电俘能器的研究。

Abstract

To investigate the influence of variable cross-section design of wind columns on the vibration characteristics and energy harvesting performance of energy harvesters，a piezoelectric energy harvester with dual variable cross-section wind columns is proposed.This design aims to capture energy from wind-induced vibration environments.The vibration characteristics and power generation performance of the harvester under both vibration excitation and vortex-induced vibration conditions are studied through shaker excitation tests and wind tunnel tests，respectively.The harvester consists of a cantilever beam，a piezoelectric patch，and two variable cross-section wind columns on both sides. Three installation methods (positive-positive，negative-negative，positive-negative) are designed to explore the effects of load resistance，excitation frequency，acceleration，and wind speed on the output performance.The results from the shaker excitation and wind tunnel tests indicate that the optimal load resistance is 80kΩ.The positive-positive installation method achieves the highest output power of 4.06 mW at a wind speed of 4.7 m/s，which is significantly superior to similar studies.Symmetrical structures (positive-positive，negative-negative)demonstrate better power generation performance under external vibration excitation compared to the asymmetrical structure (positive-negative)，due to the superposition effect of piezoelectric patch deformation enhanced by synchronous vibration modes.The reverse installation structure can reduce the natural frequency and the cut-in wind speed of the device，but it shows lower efficiency in utilizing vortices during wind tunnel tests.Increasing the excitation acceleration significantly improves the power generation performance of the harvester.This study provides new insights for efficient energy harvesting in wind-induced vibration environments and expands the research on piezoelectric energy harvesters with variable cross-section wind columns.

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references

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