Vibration energy harvesting device using P(VDF-TrFE) hybrid fluid diaphragm

Huet, Florian; Formosa, Fabien; Badel, Adrien; Capsal, Jean‐Fabien; Lallart, Mickaël

doi:10.1016/j.sna.2016.05.029

Cited by 15 publications

(5 citation statements)

References 17 publications

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“…63 Hybrid fluid diaphragm membrane based harvester proposed by Huet et al. 64 delivered power density of 15.33 μW/cm 3 at 119.5 Hz with 4 g base acceleration. Ball screw based inertial mass harvester delivered 1.49 W of peak power at resonance frequency of 3 Hz for peak support vertical acceleration of 0.39 g .…”

Section: Resultsmentioning

confidence: 99%

Design and analysis of switchable magnetic polarity bistable energy harvester

Satpute¹,

Jugulkar

Satpute³

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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Multistable vibration harvesters that involve repelling magnet force result in improved efficiency over a wider bandwidth in comparison to the conventional resonant devices. However, the dynamic performance of the vibration harvester can be further improved by switching the magnetic force polarity to ensure pull force on the mass as it moves towards the mean position. In the presented work, the design and analysis of a switching polarity bistable harvester has been presented, which changes the magnetic interaction polarity in order to improve power output as well as efficient operational bandwidth. An innovative mechanism has been developed to operate the harvester with switching polarity for higher base acceleration amplitude. The proposed design has integrated switchable polarity magnetic interaction and rotary electric generator which is driven by a compound gear train in the conventional spring-mass harvester. Analytical and numerical simulations have been formulated to illustrate efficient operational characteristics over the operating frequency band and to determine the optimum electrical damping coefficient. Effects of magnetic interaction force, the inertia of the switching mechanism and gears have been considered in the numerical analysis. A prototype delivered the peak power of 1.49 W at the resonance frequency and exhibited 50% increase in power in comparison to fixed polarity design.

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Section: Resultsmentioning

confidence: 99%

Design and analysis of switchable magnetic polarity bistable energy harvester

Satpute¹,

Jugulkar

Satpute³

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Геометрические размеры могут варьироваться в зависимости от габаритов изделия, в состав которого включается пьезоэлемент, а также в зависимости от величины требуемых перемещений [18][19][20].…”

Section: методы и материалыunclassified

Basic principles of piezo transducer efficiency evaluation method

Al-Rufaee,

Yakimovich,

Kuvshinov

2023

Vestnik IzhGTU imeni M.T. Kalashnikova

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Piezoelectric elements are one of the sources of alternative energy, the production of which does not require the use of fossil fuels harmful to the environment and the planet's climate. In this regard, the expansion of the scope of piezoelectric elements happens more and more intensively every year. The designs of piezoelectric elements that are capable of generating electricity as a result of external mechanical influences are in high demand. This demand is due to the ability to operate the most important navigation devices, smartphones, and low-voltage chargers from the received electricity in the absence of external sources of the latter or its high cost when generated by other methods. Due to the fact that piezoelectric elements have a number of specific properties due to their crystal structure, shape, size, and electrical characteristics, it is necessary to develop the selection criteria of these devices, guided by the most rational approach based on economic feasibility, market availability, and optimal manufacturability. Currently, a wide range of models of piezoelectric elements is presented that can meet the need of any customer on the Russian market despite numerous economic sanctions. Selection of the most efficient model is a major challenge for companies that use piezoelectric elements as separate components in the composition of series-produced electronic devices. There is no methodology for selecting such products; however, they can be in great demand due to multifold offers from suppliers. The method that is suggested allows the simulation of a piezoelectric element under settings that are similar to actual operating conditions, the analysis of their impact on the displacement of the piezoelectric element’s end, which is its primary characteristic under the conditions of the considered scheme, as well as the evaluation of properties and the development of recommendations for use based on the variation of its main dimensions (length, thickness), as well as the applied voltage included in the developed model, and analysis of their influence to the displacement of the end of the piezoelectric element, which is the main characteristic of the piezoelectric element under the conditions of the considered scheme. Based on the results of modeling the piezoelectric element, the most acceptable models are selected.

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“…The efficiency of inorganic materials is also manifested by high coupling coefficients, k , that represent the ratio of electrical to mechanical energy conversion . Some organic materials, and in particular fluorinated polymers, ,− also display piezoelectric properties. The most efficient ones include polyvinylidene fluoride (PVDF) and copolymers , such as poly(vinylidenefluoride-trifluoroethylene) (PVDF-TrFE)), poly(vinylidenefluoride-trifluoroethylene-chlorotrifluoroethylene) (PVDF-TrFE-CFE), or poly(vinylidene fluoride-hexafluoropropylene (PVDF-HFP).…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric Fibers: Processing and Challenges

Scheffler

Poulin

2022

ACS Appl. Mater. Interfaces

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Integration of piezoelectric materials in composite and textile structures is promising for creating smart textiles with sensing or energy harvesting functionalities. The most direct integration that combines wearability, comfort, and piezoelectric efficiency consists of using fibers made of piezoelectric materials. The latter include inorganic ceramics or organic polymers. Ceramics have outstanding piezoelectric properties but can not be easily melted or solubilized in a solvent to be processed in the form of fibers. They have to be spun from precursor materials and thermally treated afterward for densification and sintering. These delicate processes have to be carefully controlled to optimize the piezoelectric properties of the fibers. On the other hand, organic piezoelectric polymers, such as polyvinylidene fluoride (PVDF), can be spun by more conventional textile fibers technologies. In addition to enjoy an easier manufacturing, organic piezoelectric fibers display flexibility that facilitates their integration and use in smart textiles. However, organic fibers suffer from a low piezoelectric efficiency. This reviews looks at the processing techniques and their specific limitations and advantages to realize single-component or coaxial piezofibers. Fundamental challenges related to the use of composite fibers are discussed. The latter include challenges for poling and electrically wiring the fibers to collect charges under operation or to apply electrical fields. The electromechanical properties of these fibers processed by different manufacturing techniques are compared. Recent studies of structures used to integrate such fibers in textiles and composites with conventional techniques and their potential applications are discussed.

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Vibration energy harvesting device using P(VDF-TrFE) hybrid fluid diaphragm

Cited by 15 publications

References 17 publications

Design and analysis of switchable magnetic polarity bistable energy harvester

Design and analysis of switchable magnetic polarity bistable energy harvester

Basic principles of piezo transducer efficiency evaluation method

Piezoelectric Fibers: Processing and Challenges

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