Micro windmill piezoelectric energy harvester based on vortex-induced vibration in tunnel

Du, Xiaozhen; Zhang, Mi; Chang, Hsin Hsin; Wang, Yu; Yu, Hong

doi:10.1016/j.energy.2021.121734

Cited by 31 publications

(8 citation statements)

References 55 publications

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“…The power generation performance of the piezoelectric oscillator is affected by the structural size of the oscillator, the fixing method, the material properties, and the external load. Compared with the vibration isolator, when solving for the maximum power generation of the piezoelectric suspension, other factors remain the same, only the magnitude of the load is different [36][37][38]…”

Section: Voltagementioning

confidence: 99%

Modeling analysis and experiments of a novel hydro-pneumatic suspension with piezoelectric energy harvester

Wang

Ran

et al. 2023

Smart Mater. Struct.

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With the rapid development of the semiconductor field, the application of micro-electro-mechanical systems embedded in smart devices and driverless vehicles is gradually widespread, and the problem of the self-powered of devices has gradually been attention. Hence, this study propose a novel hydro-pneumatic suspension system by embedding piezoelectric energy harvester into hydro-pneumatic suspensions, which makes the suspension structure simple and achieves the effect of self-powered for the monitoring and the diagnostics of a vehicle or its subsystems. The mathematical model of intermediate fixed piezoelectric energy harvester with hydro-pneumatic suspension was established. The influence of hydraulic component and exitation parameters of suspension system on damping force and power is analyzed. Numerical simulation proves that the novel hydro-pneumatic suspension with piezoelectric energy harvester is justified to achieve self-powered. The bench test proves the accuracy of some of the conclusions of the simulation and the feasibility of the structure.

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Section: Voltagementioning

confidence: 99%

Modeling analysis and experiments of a novel hydro-pneumatic suspension with piezoelectric energy harvester

Wang

Ran

et al. 2023

Smart Mater. Struct.

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“…According to the generalized Hooke's Law in the elastic theory of materials, when a shear force is ignored, the differential equation of a small deflection of piezoelectric ceramics can be written as follows [35]:…”

Section: Electric Energy Calculation Modelmentioning

confidence: 99%

Modeling, Simulation and Analysis of Intermediate Fixed Piezoelectric Energy Harvester

Wang

et al. 2022

Energies

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To address the problem that piezoelectric energy harvesters are difficult to apply in certain environments, this paper establishes the theoretical study of the intermediate fixed disc piezoelectric energy harvester (IFDPEH) based on the unimorph under concentrated force. The reliability of the model was indirectly verified by numerical simulation and Computer-Aided Engineering (CAE) simulation. The effects of load, radius ratio (piezoelectric layer/intermediate support), thickness ratio (piezoelectric layer/total thickness), and elastic modulus ratio (substrate/piezoelectric layer) on electrical energy were studied. The results indicate that the radius/thickness ratios of the IFDPEH based on aluminum and beryllium bronze are 0.05/0.31 and 0.05/0.48, respectively. In addition, through parameter comparison, it is found that the most important parameters affecting IFDPEH power are radius ratio and large load. The results are demonstrated to be meaningful for broadening the application of piezoelectric energy harvesters by the derived closed-form equations for the electrical energy along the diameters of the piezoelectric discs in the z-direction.

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“…At present, the structure of piezoelectric energy harvesters (PEHs) mainly includes windmill structure, [24,25] cantilever structure, [26][27][28] disk structure, [29][30][31] etc. However, the above structures cannot be directly applied in the pneumatic system due to the closed pipelines and the high pressure.…”

Section: Introductionmentioning

confidence: 99%

Design and Experimental Investigation of a Novel Piezoelectric Energy Harvester in Pneumatic System

et al. 2022

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Herein, a novel piezoelectric energy harvester (PEH) with good sealing and insulation performance is proposed, which can be connected with the branch pipe to capture the air pressure impact energy in the pneumatic system. The transient energy harvesting process and effect of parameters on the performance of the PEH are experimentally investigated. The results show that the harvested transient voltage has alternating characteristics. The voltage, peak power, and electric work are improved with the decreasing minimum pressure and increasing maximum pressure. The pressure has an effect on the harvested voltage even under the same pressure difference. When the pressure is raised, the rising time and voltage slightly decrease. Specially, the minimum pressure of the PEH should be close to zero for high harvested peak power. In addition, the peak voltage and electric work increases with the increasing resistance. The peak power increases to the maximum value first and then decreases with the increase in resistance. When the pressure varies from 0 to 0.5 MPa, the maximum peak power can reach up to 140 μW at 1500 KΩ, and the power density is 1.43 mW cm−3.

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Micro windmill piezoelectric energy harvester based on vortex-induced vibration in tunnel

Cited by 31 publications

References 55 publications

Modeling analysis and experiments of a novel hydro-pneumatic suspension with piezoelectric energy harvester

Modeling analysis and experiments of a novel hydro-pneumatic suspension with piezoelectric energy harvester

Modeling, Simulation and Analysis of Intermediate Fixed Piezoelectric Energy Harvester

Design and Experimental Investigation of a Novel Piezoelectric Energy Harvester in Pneumatic System

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