Mechanical and electrical impedance matching in a piezoelectric beam for Energy Harvesting

Koszewnik, Andrzej; Grzes, Pawel; Walendziuk, Wojciech

doi:10.1140/epjst/e2015-02585-5

Cited by 24 publications

(15 citation statements)

References 16 publications

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“…To expand it, pendulum's moment of inertia must be changed. Moreover, for the optimization of the system's power efficiency, extended experiments can be performed in wider range of additional resistance [46].…”

Section: Resultsmentioning

confidence: 99%

Modelling of Electromagnetic Energy Harvester with Rotational Pendulum Using Mechanical Vibrations to Scavenge Electrical Energy

2020

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A concept of non-linear electromagnetic system with the rotational magnetic pendulum for energy harvesting from mechanical vibrations was presented. The system was stimulated by vertical excitation coming from a shaker. The main assumption of the system was the montage of additional regulated stationary magnets inside coils creating double potential well, and the system was made with a 3D printing technique in order to avoid a magnetic coupling with the housing. In validation process of the system, modelling of electromagnetic effects in different configurations of magnets positions was performed with the application of a finite element method (FEM) obtaining the value of magnetic force acting on the pendulum. A laboratory measurement circuit was built and an experiment was carried out. The voltage and power outputs were measured for different excitations in range of system operational frequencies found experimentally. The experimental results of the physical system with electrical circuit and numerical estimations of the magnetic field of a stationary magnet’s configuration were used to derive a mathematical model. The equation of motion for the rotational pendulum was used to prove the broadband frequency effect.

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Section: Resultsmentioning

confidence: 99%

Modelling of Electromagnetic Energy Harvester with Rotational Pendulum Using Mechanical Vibrations to Scavenge Electrical Energy

2020

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“…In this order need to define Generalized Electromechanical Coupling Factor known in the literature as GEMC factor that it shows relationship between mechanical and electrical parameters of the piezo-energy harvester element. This factor is expressed in the following form (Koszewnik et al, 2015):…”

Section: Modelling Of the Beam -Analytical Approachmentioning

confidence: 99%

Modelling and Testing of the Piezoelectric Beam as Energy Harvesting System

Koszewnik

Wernio

2016

Acta Mechanica Et Automatica

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The paper describes modelling and testing of the piezoelectric beam as energy harvesting system. The cantilever beam with two piezo-elements glued onto its surface is considered in the paper. As result of carried out modal analysis of the beam the natural frequencies and modes shapes are determined. The obtained results in the way mentioned above allow to estimate such location of the piezo-actuator on the beam where the piezo generates maximal values of modal control forces. Experimental investigations carried out in the laboratory allow to verify results of natural frequencies obtained during simulation and also testing of the beam in order to obtain voltage from vibration with help of the piezo-harvester. The obtained values of voltage stored on the capacitor C0 shown that the best results are achieved for the beam excited to vibration with third natural frequency, but the worst results for the beam oscillating with the first natural frequency.

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“…can be attained. These piezoelectric cantilever beam energy harvesting systems were mainly suitable for the occasions of weak force or microvibration . One limitation is narrow band width.…”

Section: Introductionmentioning

confidence: 99%

“…These piezoelectric cantilever beam energy harvesting systems were mainly suitable for the occasions of weak force or microvibration. [1][2][3][4][5][6][7][8][9][10] One limitation is narrow band width. Therefore, broadening the width of the system response frequency was widely concerned.…”

Section: Introductionmentioning

confidence: 99%

Self‐adaptive piezoelectric ceramic vibration system based on asymmetric piezoelectric cantilever for energy harvesting

Fang

Liao

Wang

et al. 2018

Int J Applied Ceramic Tech

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Micropower energy harvesting is one of key technologies for the micromation and practical development of wireless sensor and communication node networks. A self‐adaptive piezoelectric vibration system based on modified homogeneous strain asymmetric PZT piezoelectric ceramic cantilever beam for the micropower energy harvesting was designed and prepared. A vertical cantilever was designed at the first time to obtain the homogeneous state of stress which can largely increase the power output and energy harvesting efficiency of piezoelectric cantilevers. In order to achieve the self‐adaptive vibration, the asymmetric structure was adopted. Asymmetric cantilevers moved horizontally and changed the length of main cantilevers when affected by the variation in external frequency excitation, thus, the switching of resonant frequency was archived automatically without dissipating additional energy.

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Mechanical and electrical impedance matching in a piezoelectric beam for Energy Harvesting

Cited by 24 publications

References 16 publications

Modelling of Electromagnetic Energy Harvester with Rotational Pendulum Using Mechanical Vibrations to Scavenge Electrical Energy

Modelling of Electromagnetic Energy Harvester with Rotational Pendulum Using Mechanical Vibrations to Scavenge Electrical Energy

Modelling and Testing of the Piezoelectric Beam as Energy Harvesting System

Self‐adaptive piezoelectric ceramic vibration system based on asymmetric piezoelectric cantilever for energy harvesting

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