Power Generation Performance of Hybrid Piezoelectric Vibrator Based on Rotational Magnetic Force-wind Induced Vibrations

doi:10.3969/j.issn.1004-132X.2025.10.011

Abstract

Abstract:

Aiming at the problems of low energy harvesting efficiency in traditional single wind-induced vibration piezoelectric vibrator， a hybrid piezoelectric vibrator was proposed based on rotational magnetic force and wind-induced vibrations. With the wind energy from an underground mechanized mining face as the research backdrop， a hybrid piezoelectric vibrator model was conceived. A magnetic coupling model was formulated to elucidate the magnetic variation traits of the piezoelectric vibrator across various magnetic moments. A simulation was conducted to scrutinize the flow field characteristics of the designed piezoelectric vibrator. Lastly， experimental validation was executed to substantiate the power generation performance of the piezoelectric vibrator. The results indicate that the overall power generation of the designed piezoelectric vibrator increases with the diameter ratio， and there is an optimal magnetic moment and aspect ratio for achieving the best power generation performance of the hybrid piezoelectric vibrator. When the wind speed v=3.5 m/s， the maximum power generation reaches over 0.72 mW. Compared with a single wind-induced vibration piezoelectric vibrator， the proposed hybrid piezoelectric vibrator with rotating magnetic force and wind-induced vibrations increases the power generation by more than 166.7 %.

Key words: piezoelectric vibrator, wind-induced vibration, rotational magnetic force, magnetic moment, aspect ratio, power generation performance

摘要：

针对传统单一风致振动式压电振子能量收集效率低的问题，提出了一种基于旋转磁力-风致振动的混合式压电振子。以井下综采工作面的风能为研究背景，设计了混合式压电振子模型，建立磁力耦合模型，分析了不同磁矩时压电振子的磁力变化特性；对所设计压电振子的流场特性进行了仿真分析；最后通过实验对压电振子的发电性能进行了验证。研究结果表明：所设计压电振子的整体发电功率随着直径比的增大而增大，且存在合适的磁矩和长径比值使得混合式压电振子的发电性能达到最佳，当风速v=3.5 m/s时，最大发电功率达0.72 mW以上；与单一风致振动式压电振子相比，提出的旋转磁力-风致振动混合式压电振子的发电功率提高了166.7%以上。

关键词: 压电振子, 风致振动, 旋转磁力, 磁矩, 长径比, 发电性能

CLC Number:

TN384

Xiaodong YAN, Gongbo ZHOU, Ping ZHOU, Lianfeng HAN, Qing LI, Shuang CAO. Power Generation Performance of Hybrid Piezoelectric Vibrator Based on Rotational Magnetic Force-wind Induced Vibrations[J]. China Mechanical Engineering, 2025, 36(10): 2249-2257.

闫晓东, 周公博, 周坪, 韩链锋, 李庆, 曹爽. 基于旋转磁力-风致振动的混合式压电振子发电性能[J]. 中国机械工程, 2025, 36(10): 2249-2257.

Figures/Tables 17

Tab.1 Actual wind speed test results at a Mine

测试风速地点	平均风速	备注
大巷	2.0 m/s
副井井口	2.5 m/s
主运输巷道	1.8 m/s	风管开口附近
综采工作面	3.5 m/s	10个点的平均值

Fig.1 Hybrid piezoelectric vibrator model

Tab.2 Model parameters

参数		基板	PZT-5H	磁铁	质量块
弹性模量/GPa		110	60.6
密度/（kg·m^-3）		8300	7500	7500	7500
压电振子1尺寸/mm	长×宽×厚	100×20×0.2	60×20×0.2	10×10×5	10×10×40
压电振子2尺寸/mm	长×宽×厚	180×40×0.2	60×40×0.2

Fig.2 Magnetic coupling model

Fig.3 Magnetic force in vibration direction of piezoelectric vibrator under different magnetic moments

Fig.4 Schematic diagram of flow field parameters

Fig.5 Flow field under different length-diameter ratios

Fig.6 Variation of lift coefficient amplitude under different length-diameter ratios

Fig.7 Flow field with different diameter ratios

Fig.8 Variation of lift coefficient amplitude with different diameters

Fig.9 Wind energy harvesting device experim ental platform

Fig.10 Power generation performance at different magnetic moments d

Fig.11 Variation of generation voltage at different aspect ratios L/D1

Fig.12 Charging efficiency at different aspect ratios L/D1

Tab. 3 Generation power under different aspect ratios

长径比L/D₁	发电功率/mW	长径比L/D₁	发电功率/mW
1.4	0.0007	2.4	0.0220
1.6	0.0033	2.6	0.0320
1.8	0.1600	2.8	0.0180
2.0	0.2700	3.0	0.0030
2.2	0.2000	单一圆柱体	0.0005

Fig.13 Power generation performance of cylindrical piezoelectric vibrator with interference at different diameter ratios D2/D1

Tab.4 Comparison of power generation performance of different methods

方法	动力学现象	风速/（m·s^-1）	最大输出功率/ （mW）
文献［20］	驰振	4.2	0.0072
文献［21］	涡激振动	1.6	0.2100
无钝体的单一风致振动式	涡激振动	3.5	0.0005
有钝体的单一风致振动式	涡激振动	3.5	0.2700
旋转磁力- 风致振动混合式	磁致振动+ 涡激振动	3.5	0.7200

References 21

[1]	亓有超，赵俊青，张弛. 微纳振动能量收集器研究现状与展望［J］. 机械工程学报， 2020， 56（13）：1-15.
	QI Youchao， ZHAO Junqing， ZHANG Chi. Review and Prospect of Micro-nano Vibration Energy Harvesters［J］. Journal of Mechanical Engineering， 2020， 56（13）：1-15.
[2]	姚丙盟，刘志平，李文锋. 基于双稳态的振动能量收集系统的设计［J］.中国机械工程， 2015， 26（13）：1736-1741.
	YAO Bingmeng， LIU Zhiping， LI Wenfeng. Design of Vibration Energy Harvester Based on Bistability［J］. China Mechanical Engineering， 2015， 26（13）：1736-1741.
[3]	赵兴强，王军雷，蔡骏，等. 基于风致振动效应的微型风能收集器研究现状［J］. 振动与冲击， 2017， 36（16）：106-112.
	ZHAO Xingqiang， WANG Junlei， CAI Jun， et al. A Review on Micro Wind Energy Harvesters Based Wind Induced Vibration［J］. Journal of Vibration and Shock， 2017， 36（16）：106-112.
[4]	李支援，吕文博，马小青，等. 一种磁力滑动式翼型颤振能量俘获器［J］. 力学学报， 2023， 55（10）：2146-2155.
	LI Zhiyuan， Wenbo LYU， MA Xiaoqing， et al. A Magnetic Sliding Airfoil Flutter Energy Harvester［J］. Chinese Journal of Theoretical and Applied Mechanics， 2023， 55（10）：2146-2155.
[5]	闫晓东，周公博，徐懋，等. 宽频自调谐压电振子发电性能研究［J］. 振动工程学报， 2023， 36（6）：1647-1656.
	YAN Xiaodong， ZHOU Gongbo， XU Mao， et al. Power Generation Performance Analysis of Broadband Self-tuning Piezoelectric Vibrator［J］. Journal of Vibration Engineering， 2023， 36（6）：1647-1656.
[6]	闫晓东，周公博. 中间梁方式下压电式能量采集器发电性能研究［J］. 电子学报， 2022， 50（2）：404-414.
	YAN Xiaodong， ZHOU Gongbo. Study on Power Generation Performance of Piezoelectric Energy Harvester under Intermediate Beam Fixed Mode［J］. Acta Electronica Sinica， 2022， 50（2）：404-414.
[7]	黄浩博，曹迪，周志勇，等. 基于涡激振动的压电风能收集器研究进展［J］. 力学学报， 2023， 55（10）：2132-2145.
	HUANG Haobo， CAO Di， ZHOU Zhiyong， et al. Research Progress of Piezoelectric Wind Energy Harvesters Based on Vortex-Induced Vibration［J］. Chinese Journal of Theoretical and Applied Mechanics， 2023， 55（10）：2132-2145.
[8]	练继建，燕翔，刘昉，等. 正方形截面振子在不同来流方向的单自由度流致振动特性研究［J］. 振动与冲击， 2017， 36（15）：29-35.
	LIAN Jijian， YAN Xiang， LIU Fang， et al. Flow Induced Vibration Characteristics of a Single-DOF Square Cylinder at Different Incident Angles［J］. Journal of Vibration and Shock， 2017， 36（15）：29-35.
[9]	WANG J L， ZHANG C Y， YURCHENKO D， et al. Usefulness of Inclined Circular Cylinders for Designing Ultra-wide Bandwidth Piezoelectric Energy Harvesters：Experiments and Computational Investigations［J］. Energy， 2022， 239：122203.
[10]	WANG J L， SUN S K， HU G B， et al. Exploring the Potential Benefits of Using Metasurface for Galloping Energy Harvesting［J］. Energy Conversion and Management， 2021， 243：114414.
[11]	WANG J L， HAN C Y， YURCHENKO D， et al. Energy Concentration Pipe Based on Passive Jet Control for Enhancing Flow Induced Vibration Energy Harvesting［J］. Energy Conversion and Management， 2024， 319：118948.
[12]	SONG T， DING L， YANG L， et al. Comparison of Machine Learning Models for Performance Evaluation of Wind-induced Vibration Piezoelectric Energy Harvester with Fin-shaped Attachments［J］. Ocean Engineering， 2023， 280：114630.
[13]	于慧慧，李莉，王永耀，等. 基于涡致振动的压电能量收集阵列的仿真与实验［J］. 压电与声光， 2022， 44（1）：77-84.
	YU Huihui， LI Li， WANG Yongyao， et al. Simulation and Experiment on Piezoelectric Energy Harvester Array Based on Vortex-induced Vibration［J］. Piezoelectrics & Acoustooptics， 2022， 44（1）：77-84.
[14]	HOBBS W B. Piezoelectric Energy Harvesting：Vortex Induced Vibrations in Plants， Soap Films， and Arrays of Cylinders［D］. Atlanta：Georgia Institute of Technology， 2010.
[15]	WANG G T， LUO L J， ZHAO Q L， et al. A Dual-cylinder Piezoelectric Energy Harvester Using Wind Energy［J］. Ferroelectrics Letters Section， 2023， 50（4/6）：150-161.
[16]	TANG B W， FAN X T， WANG J W， et al. Energy Harvesting from Flow-induced Vibrations Enhanced by Meta-surface Structure under Elastic Interference［J］. International Journal of Mechanical Sciences， 2022， 236：107749.
[17]	KAN J W， LIAO W L， WANG J， et al. Enhanced Piezoelectric Wind-induced Vibration Energy Harvester via the Interplay between Cylindrical Shell and Diamond-shaped Baffle［J］. Nano Energy， 2021， 89：106466.
[18]	HU G， WANG J L， SU Z， et al. Performance Evaluation of Twin Piezoelectric Wind Energy Harvesters under Mutual Interference［J］. Applied Physics Letters， 2019， 115（7）：073901.
[19]	MENG J P， FU X W， YANG C Q， et al. Design and Simulation Investigation of Piezoelectric Energy Harvester under Wake-induced Vibration Coupling Vortex-induced Vibration［J］. Ferroelectrics， 2021， 585（1）：128-138.
[20]	MENG J P， YANG C Q， ZHANG H R， et al. Design and Experiment Investigation of a Percussive Piezoelectric Energy Harvester Scavenging on Wind Galloping Oscillation［J］. Ferroelectrics， 2021， 584（1）：121-131.
[21]	HOU C W， SHAN X B， ZHANG L A， et al. Design and Modeling of a Magnetic-Coupling Monostable Piezoelectric Energy Harvester under Vortex-induced Vibration［J］. IEEE Access， 2020， 8：108913-108927.