The investigation of viscous and structural damping for piezoelectric energy harvesters using only time-domain voltage measurements

Khazaee, Majid; Huber, J. E.; Rosendahl, Lasse; Rezania, Alireza

doi:10.1016/j.apenergy.2020.116427

Cited by 14 publications

(11 citation statements)

References 42 publications

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“…High-power piezoelectric transducers have the advantages of low energy consumption, wide application range and high processing efficiency, which are widely used in food, medicine, plastic, composite materials and metal processing [ 1 , 2 , 3 ]. Owing to the particular mechanical, thermal and cavitation effects of the high-power piezoelectric transducers, researchers are trying to use them to assist or replace traditional methods in more and more processing and manufacturing fields.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Transient Response Characteristics Analysis of High-Power Piezoelectric Transducers

Dong

Yang

2022

Micromachines

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To improve suitability in applications with high dynamic performance requirements, the transient response characteristics of high-power piezoelectric transducers should be studied quantitatively. This paper proposes the vector reduction method to solve the complex transient equations and obtains a transient matching scheme clarifying the mechanism of electrical matching resistance on electromechanical damping. A matching scheme with a combination of full-bridge inverter, transformer and series LC circuit is designed and validated, which can provide suitable electrical damping without causing energy losses. Consequently, the experiment verifies the transient properties of the proposed scheme. For a typical piezoelectric cutting transducer with 100.8 ms response time, our scheme is verified to have high dynamic performance within frequency response time of 5.5 ms and vibration response time of 15.0 ms.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Transient Response Characteristics Analysis of High-Power Piezoelectric Transducers

Dong

Yang

2022

Micromachines

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“…The damping coefficient of the PEH must be considered in the FEM simulation, as it affects the amplitude of the structure and, thus, the output power of the PEH. The damping coefficient is influenced by the material, structure, bonding layer, and air resistance [36]. An isotropic loss factor, the widely used generic constant damping model [20,22,24,27,32,35], was used during the simulation to define the damping of the PEH.…”

Section: Modeling and Simulationmentioning

confidence: 99%

Multimode auxetic piezoelectric energy harvester for low-frequency vibration

He,

Kurita,

Narita

2024

Smart Mater. Struct.

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Herein, we propose a piezoelectric energy harvester (PEH) capable of vibrating in multi-degrees-of-freedom. The resonant frequency, working bandwidth, and output power of the PEH were improved by introducing an auxetic structure (AS). The proposed PEH exhibited a symmetric serpentine structure with a doubly clamped configuration comprising several proof masses at the junctions. Finite element method simulation was conducted to investigate the characteristics of an AS PEH and a plain-structure PEH. Prototypes of the PEHs were manufactured by three-dimensional printing technology, and their performance was evaluated through vibrational energy-harvesting experimental tests. The results showed that introducing the AS reduced the first and second resonant frequencies by 49% and 44%, respectively, considerably improved the output power in the first mode (up to 2548%) and narrowed the frequency bandgap between the first two resonance modes by 29%. The proposed multimode AS PEH can operate in a low-frequency environment of less than 20 Hz. Finally, we discussed several ways of optimizing the AS. It has been found that the PEH performance could be further improved by selecting a reasonable thickness for the AS, increasing the number of periodic unit cells, and using an AS with a variable cross-section unit cell.

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“…The surface potential was measured using a Model 279 electrostatic voltmeter (Monroe Electronics). In a PVEH, sources of energy dissipation generally incorporate air resistance, internal friction in materials and viscoelastic contact in the bond layer, corresponding to two parts of mechanical damping: air damping and structural damping [27]. The mechanical damping ratio of the HPEVEH was numerically calculated using the logarithmic decrement method, performed using a flick test.…”

Section: Property Valuementioning

confidence: 99%

Frequency‐tunable resonant hybrid vibration energy harvester using a piezoelectric cantilever with electret‐based electrostatic coupling

Feng

Zhou

Luo

et al. 2023

IET Nanodielectrics

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Hybrid vibration energy harvesting technology converts vibration energy into electricity using multiple transduction mechanisms to improve output power. A frequency‐tunable resonant hybrid vibration energy harvester using a piezoelectric cantilever with electret‐based electrostatic coupling is proposed in this article. The electrostatic coupling including electrostatic force coupling and electrical damping coupling is introduced by an electret film placed below the cantilever, where the electrostatic force acting on the cantilever realises a tunable resonant frequency and additional electrical damping boosts power output. A coupling electromechanical model is derived using Euler–Bernoulli beam theory and Kirchhoff's law. By investigating the static and dynamic stability of cantilever, the maximum electret surface potential is defined to prevent the pull‐in phenomenon. The damping of the device is evaluated, and the optimal electret surface potential is determined to obtain the matching of the electrical and mechanical damping for maximum power output. The resonant frequency of hybrid vibration energy harvester can be adjusted in range of 176.1 rad/s by changing the electret surface potential and resistive load. The experimental output power of hybrid vibration energy harvester was 5.2 μW, 27.4 times higher than that of the individual piezoelectric generator. The proposed hybrid vibration energy harvester exhibits a promising potential to power microelectronic devices and wireless sensor network node.

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The investigation of viscous and structural damping for piezoelectric energy harvesters using only time-domain voltage measurements

Cited by 14 publications

References 42 publications

RETRACTED: Transient Response Characteristics Analysis of High-Power Piezoelectric Transducers

RETRACTED: Transient Response Characteristics Analysis of High-Power Piezoelectric Transducers

Multimode auxetic piezoelectric energy harvester for low-frequency vibration

Frequency‐tunable resonant hybrid vibration energy harvester using a piezoelectric cantilever with electret‐based electrostatic coupling

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