An experimental study to determine damping of piezoelectric harvesters using transient analysis of unified electromechanical voltage equation

Khazaee, Majid; Rezania, Alireza; Rosendahl, Lasse

doi:10.1016/j.enconman.2020.113567

Cited by 14 publications

(40 citation statements)

References 28 publications

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“…First, the STFR is developed, and the relationship between the damping and the decay of the voltage response is illustrated using a recently measured voltage response of a piezoelectric harvester [40]. Because piezoelectricity is a transducing property giving a linear relationship between mechanical strain and electric field, the measured voltage characterizes the response of the system.…”

Section: Methods For Extracting Resonant Frequencies and Damping Coefficientsmentioning

confidence: 99%

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

et al. 2021

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Section: Methods For Extracting Resonant Frequencies and Damping Coefficientsmentioning

confidence: 99%

“…Moreover, from the general transient response of a single degree of freedom system, the voltage response for i-th mode can be expressed as [40] 𝑉 𝑖 [𝑘] = 𝐴 𝑖 𝑒 −𝜁 𝑖 𝜔 𝑛,𝑖 (𝑘∆𝑇) sin(𝜔 𝑑,𝑖 (𝑘∆𝑇) + 𝜃 𝑖 )…”

Section: The Damping Coefficient In the Decay Voltage Responsementioning

confidence: 99%

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

et al. 2021

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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%

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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“…Sodano et al [ 13 ] conducted an experimental comparison of the power generation capabilities of a variety of piezoelectric materials. With regard to mathematical modelling techniques, although numerical methods were used as early as 2002 [ 14 ], significant progress on modelling the electromechanical coupling was made from 2008 onwards following the analytical approach of Erturk and Inman [ 9 , 11 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Analytical and Experimental Investigation of a Curved Piezoelectric Energy Harvester

Pourashraf

Bonello

Truong

2022

Sensors

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Piezoelectric energy harvesters have traditionally taken the form of base excited cantilevers. However, there is a growing body of research into the use of curved piezoelectric transducers for energy harvesting. The novel contribution of this paper is an analytical model of a piezoelectric energy harvesting curved beam based on the dynamic stiffness method (DSM) and its application to predict the measured output of a novel design of energy harvester that uses commercial curved transducers (THUNDER TH-7R). The DSM predictions are also verified against results from commercial finite element (FE) software. The validated results illustrate the resonance shift and shunt damping arising from the electrical effect. The magnitude, phase, Nyquist plots, and resonance frequency shift estimates from DSM and FE are all in satisfactory agreement. However, DSM has the advantage of having significantly fewer elements and is sufficiently accurate for commercial curved transducers used in applications where beam-like vibration is the predominant mode of vibration.

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An experimental study to determine damping of piezoelectric harvesters using transient analysis of unified electromechanical voltage equation

Cited by 14 publications

References 28 publications

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

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

Transient Response Characteristics Analysis of High-Power Piezoelectric Transducers

Analytical and Experimental Investigation of a Curved Piezoelectric Energy Harvester

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