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 %.
QIYouchao, ZHAOJunqing, ZHANGChi. Review and Prospect of Micro-nano Vibration Energy Harvesters[J]. Journal of Mechanical Engineering, 2020, 56(13):1-15.
YAOBingmeng, LIUZhiping, LIWenfeng. Design of Vibration Energy Harvester Based on Bistability[J]. China Mechanical Engineering, 2015, 26(13):1736-1741.
ZHAOXingqiang, WANGJunlei, CAIJun, et al. A Review on Micro Wind Energy Harvesters Based Wind Induced Vibration[J]. Journal of Vibration and Shock, 2017, 36(16):106-112.
LIZhiyuan, WenboLYU, MAXiaoqing, et al. A Magnetic Sliding Airfoil Flutter Energy Harvester[J]. Chinese Journal of Theoretical and Applied Mechanics, 2023, 55(10):2146-2155.
YANXiaodong, ZHOUGongbo, XUMao, et al. Power Generation Performance Analysis of Broadband Self-tuning Piezoelectric Vibrator[J]. Journal of Vibration Engineering, 2023, 36(6):1647-1656.
YANXiaodong, ZHOUGongbo. Study on Power Generation Performance of Piezoelectric Energy Harvester under Intermediate Beam Fixed Mode[J]. Acta Electronica Sinica, 2022, 50(2):404-414.
HUANGHaobo, CAODi, ZHOUZhiyong, 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.
LIANJijian, YANXiang, LIUFang, 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.
[17]
WANGJ L, ZHANGC Y, YURCHENKOD, et al. Usefulness of Inclined Circular Cylinders for Designing Ultra-wide Bandwidth Piezoelectric Energy Harvesters:Experiments and Computational Investigations[J]. Energy, 2022, 239:122203.
[18]
WANGJ L, SUNS K, HUG B, et al. Exploring the Potential Benefits of Using Metasurface for Galloping Energy Harvesting[J]. Energy Conversion and Management, 2021, 243:114414.
[19]
WANGJ L, HANC Y, YURCHENKOD, 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.
[20]
SONGT, DINGL, YANGL, 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.
YUHuihui, LILi, WANGYongyao, et al. Simulation and Experiment on Piezoelectric Energy Harvester Array Based on Vortex-induced Vibration[J]. Piezoelectrics & Acoustooptics, 2022, 44(1):77-84.
[23]
HOBBSW B. Piezoelectric Energy Harvesting:Vortex Induced Vibrations in Plants, Soap Films, and Arrays of Cylinders[D]. Atlanta:Georgia Institute of Technology, 2010.
[24]
WANGG T, LUOL J, ZHAOQ L, et al. A Dual-cylinder Piezoelectric Energy Harvester Using Wind Energy[J]. Ferroelectrics Letters Section, 2023, 50(4/6):150-161.
[25]
TANGB W, FANX T, WANGJ 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.
[26]
KANJ W, LIAOW L, WANGJ, 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.
[27]
HUG, WANGJ L, SUZ, et al. Performance Evaluation of Twin Piezoelectric Wind Energy Harvesters under Mutual Interference[J]. Applied Physics Letters, 2019, 115(7):073901.
[28]
MENGJ P, FUX W, YANGC 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.
[29]
MENGJ P, YANGC Q, ZHANGH 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.
[30]
HOUC W, SHANX B, ZHANGL 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.