Analytical solution of piezoelectric composite stack transducers

Wang, Jianjun; Shi, Zhifei; Zhi-jun, Han

doi:10.1177/1045389x13479185

Cited by 37 publications

(54 citation statements)

References 35 publications

(26 reference statements)

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“…Therefore, through the optimization of the series-parallel mixed mode of piezoelectric vibrators, the voltage and current output characteristics of piezoelectric power generation equipment can be optimized, which is beneficial for electric power grid connection. From analytical calculations, reference [16] demonstrates that the multilayer piezoelectric vibrator consisting of 145 piece series-parallel piezoelectric vibrators (height 1.8 cm, section area 1 cm 2 ) has 1 -10 μF equivalent capacitance and about 30 V open circuit voltage, and its matched load resistance is several kilohms. Reference [17], by changing the direction of the traditional interconnection mode, promotes the electricity energy output quantity and the efficiency by 1.5 -1.8 times.…”

Section: Assembling Of Piezoelectric Power Generation Equipmentmentioning

confidence: 99%

An Overview on Piezoelectric Power Generation System for Electricity Generation

Sun¹

2017

JPEE

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Coal, petroleum and natural gas will still be the basis of economic development for a long time. However, with a rapider consumption speed, these fossil fuels will be exhausted in the near future. In addition, the usage of these fossil fuels can also cause environmental pollution and greenhouse effect. To deal with energy security and environmental crisis, it is wise to work towards three directions: energy saving and emission reduction, energy recovery, exploration of new renewable energy. Currently, the electricity generation technology using piezoelectric material to recover the compressional or vibrational energy begins to draw attention. However, most of the researches are devoted to designing small self-powered devices. This paper presents an overview of the feasibility of piezoelectric power generation system for electric power system, in which the fundamentals of piezoelectric power generation and the feasible structure of the system are discussed.

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Section: Assembling Of Piezoelectric Power Generation Equipmentmentioning

confidence: 99%

An Overview on Piezoelectric Power Generation System for Electricity Generation

Sun¹

2017

JPEE

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“…Some works [8] construct and then use the analytical models of high power harvesters based on PZT stacks, but due to complexity of their analysis, the lumped models of PZT stacks [6] that are usually derived from preliminary experiments or FE investigation can be coupled and solved conjointly with an equation of electric circuit in a frequency domain. For our study that is oriented to the transform of mechanical vibrations generated by moving transporters, it is important to note that even first resonance frequency of the stiff PZT stack is considerably higher of the frequency of mechanical excitations [4].…”

Section: Introductionmentioning

confidence: 99%

“…Among many types of piezoelectric transducer, the power piezoelectric stacks are best suited to transform the ambient mechanical vibration to the electric energy due to their ability to perceive high force excitations [4,6,8]. Some works [8] construct and then use the analytical models of high power harvesters based on PZT stacks, but due to complexity of their analysis, the lumped models of PZT stacks [6] that are usually derived from preliminary experiments or FE investigation can be coupled and solved conjointly with an equation of electric circuit in a frequency domain.…”

Section: Introductionmentioning

confidence: 99%

Modeling of vibration energy harvesting system with power PZT stack loaded on Li-Ion battery

Shevtsov

Chang

2016

International Journal of Hydrogen Energy

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“…Symbol H 0 denotes the thickness of the protective layer. Different from our previous work on energy harvester and sensor, 10 in which the harmonic mechanical load is applied to the piezoelectric stack, the harmonic voltage V ðtÞ ¼ V 0 e j!t is applied to the actuator instead in the current study. Symbols V 0 , !(!…”

Section: Introductionmentioning

confidence: 99%

Effects of electrodes and protective layers on the electromechanical characteristics of piezoelectric stack actuators

Wang

Qin

et al. 2019

Advanced Composites Letters

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Piezoelectric stack actuators are a type of excellent smart devices that can activate large power and displacement outputs due to their unique stack configuration and have been widely used in linear vibrators for various engineering applications. For the fabricated piezoelectric stack actuator, it usually consists of multiple thin piezoelectric wafers, multiple electrodes, and two protective layers. All the piezoelectric wafers are connected electrically in parallel through the electrodes and are protected by two protective layers at the two ends. However, in most of the theoretical models, the active piezoelectric portion is mainly considered, while the electrodes and protective layers are usually neglected to simplify the complicated problem, which results in an inaccurate prediction of the electromechanical characteristics. In our previously published work, the exact theoretical models of the piezoelectric stack energy harvester and sensor with the electrodes and the protective layers included have been established successfully to evaluate the electromechanical performance of these two types of devices, and their validity has verified by the experimental results. However, the exact theoretical model of the piezoelectric stack actuators has not been established, and the effects of the electrodes and the protective layers on the electromechanical characteristics of the actuator are not fully understood. In this article, the exact theoretical model of piezoelectric stack actuator was derived based on our previous work, and the effects of these two factors on the electromechanical characteristics were investigated. Comparisons with the results in the earlier literatures and the experimental results were presented to validate the model. Furthermore, two kinds of typical working states, including clamped–free (C-F) and free–free (F-F), were discussed. The results showed that neglecting the electrodes and the protective layers will greatly affect the accuracy of the prediction model, thus providing some valuable guidelines in designing the piezoelectric stack actuators.

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Analytical solution of piezoelectric composite stack transducers

Cited by 37 publications

References 35 publications

An Overview on Piezoelectric Power Generation System for Electricity Generation

An Overview on Piezoelectric Power Generation System for Electricity Generation

Modeling of vibration energy harvesting system with power PZT stack loaded on Li-Ion battery

Effects of electrodes and protective layers on the electromechanical characteristics of piezoelectric stack actuators

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