Experimental tests of a magnetostrictive energy harvesting device toward its modeling

Adly, A.A.; Davino, D.; Giustiniani, Alessandro; Visone, C.

doi:10.1063/1.3357403

Cited by 44 publications

(17 citation statements)

References 11 publications

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“…For example, magnetostrictive energy harvesters utilizing Villari‐effect convert ambient vibrations into oscillating magnetic fields which induces electromagnetic fields) into a surrounding coil . A typical magnetoelastic harvester consists of a magnetostrictive rod and a coil surrounding it . A magnetoelectric unimorph harvester on the other hand consists of a composite beam comprising of a magnetostrictive layer and a piezoelectric layer .…”

Section: Introductionmentioning

confidence: 99%

Large Power Amplification in Magneto‐Mechano‐Electric Harvesters through Distributed Forcing

Sriramdas

Kang

Miao

et al. 2020

Advanced Energy Materials

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Energy harvesting from extremely low frequency magnetic fields using magneto‐mechano‐electric (MME) harvesters enables wireless power transfer for operating Internet of Things (IoT) devices. The MME harvesters are designed to resonate at a fixed frequency by absorbing AC magnetic fields through a composite cantilever comprising of piezoelectric and magnetostrictive materials, and a permanent magnetic tip mass. However, this harvester architecture limits power generation because volume of the magnetic end mass is closely coupled with the resonance frequency of the device structure. Here, a method is demonstrated for maintaining the resonance frequency of the MME harvesters under all operating conditions (e.g., 60 Hz, standard frequency of electricity in many countries) while simultaneously enhancing the output power generation. By distributing the magnetic mass over the beam, the output power of the harvester is significantly enhanced at a constant resonance frequency. The MME harvester with distributed forcing shows 280% improvement in the power generation compared with a traditional architecture. The generated power is shown to be sufficient to power eight different onboard sensors with wireless data transmission integrated on a drone. These results demonstrate the promise of MME energy harvesters for powering wireless communication and IoT sensors.

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Section: Introductionmentioning

confidence: 99%

Large Power Amplification in Magneto‐Mechano‐Electric Harvesters through Distributed Forcing

Sriramdas

Kang

Miao

et al. 2020

Advanced Energy Materials

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“…The feasibility of using magnetostrictive materials for power‐generating components has been practically demonstrated, especially for the applications of vibration‐energy harvesting in terms of their inverse magnetostrictive properties . In the current decade, there are two dominant magnetostrictive materials known as Terfenol‐D and Galfenol that have been widely studied.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Inverse Magnetostrictive Effect through Stress Concentration for a Notch‐Introduced FeCo Alloy

et al. 2018

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The authors investigate the magnetic flux leakage for a class of magnetostrictive FeCo alloys with a notch undergoing compression and impact with respect to energy harvesting. The magnetic flux leakage plays a crucial role in the practical energy transition in terms of the features for energy harvesting. Therefore, the corresponding situations are systematically studied by combining finite element analysis (FEA) with practical experiments. The FeCo alloys are categorized into three groups with different three-dimensional notch shapes, and the depths of the notches are 0, 0.5, and 1 mm, respectively. The parameters in both the simulations and practical tests are completely consistent. The results of compression test carried out with a stepwiseincreasing stress from 0 to 100 MPa reveal that the variations of magnetic induced flux increase with the increasing depth of the notches. The following FEA herein provides a feasible interpretation that the stress concentration around the notch is largely responsible for the notch-induced enhancement. The findings of the impacting experiments simultaneously exhibit an analogous tendency that the output power is proportional to the depth of notch. Furthermore, the stress rate has no obvious effect on the output electricity. The maximum magnitude of the improvement for the output power increases by almost 400% comparing the specimens with notches of 0 and 1 mm. This study indicates a promising feasibility to achieve vibrationenergy harvesting from various irregular components.

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“…Research in the field of vibration-based energy harvesting has received growing attention over the last two decades with the major goal of powering small electronic components and thereby eliminating the need of battery replacement. There exist several transduction mechanisms by means of which vibrational energy can be converted to electrical energy, such as the electrostatic [1,2], electromagnetic [3,4], magnetostrictive [5,6] conversion methods, as well as the use of electroactive polymers [7], electrostrictive polymers [8], and piezoelectric transducers [9,10]. Among these alternative approaches, piezoelectric energy harvesters have drawn most attention, due to the high power density and ease of application of piezoelectric materials at different geometric scales [11].…”

Section: Introductionmentioning

confidence: 99%

Equivalent circuit modeling of a piezo-patch energy harvester on a thin plate with AC–DC conversion

Bayik

Aghakhani

Basdogan

et al. 2016

Smart Mater. Struct.

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As an alternative to beam-like structures, piezoelectric patch-based energy harvesters attached to thin plates can be readily integrated to plate-like structures in automotive, marine, and aerospace applications, in order to directly exploit structural vibration modes of the host system without mass loading and volumetric occupancy of cantilever attachments. In this paper, a multi-mode equivalent circuit model of a piezo-patch energy harvester integrated to a thin plate is developed and coupled with a standard AC-DC conversion circuit. Equivalent circuit parameters are obtained in two different ways: (1) from the modal analysis solution of a distributed-parameter analytical model and (2) from the finite-element numerical model of the harvester by accounting for two-way coupling. After the analytical modeling effort, multi-mode equivalent circuit representation of the harvester is obtained via electronic circuit simulation software SPICE. Using the SPICE software, electromechanical response of the piezoelectric energy harvester connected to linear and nonlinear circuit elements are computed. Simulation results are validated for the standard AC-AC and AC-DC configurations. For the AC input-AC output problem, voltage frequency response functions are calculated for various resistive loads, and they show excellent agreement with modal analysis-based analytical closed-form solution and with the finite-element model. For the standard ideal AC input-DC output case, a full-wave rectifier and a smoothing capacitor are added to the harvester circuit for conversion of the AC voltage to a stable DC voltage, which is also validated against an existing solution by treating the singlemode plate dynamics as a single-degree-of-freedom system.

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Experimental tests of a magnetostrictive energy harvesting device toward its modeling

Cited by 44 publications

References 11 publications

Large Power Amplification in Magneto‐Mechano‐Electric Harvesters through Distributed Forcing

Large Power Amplification in Magneto‐Mechano‐Electric Harvesters through Distributed Forcing

Enhancement of Inverse Magnetostrictive Effect through Stress Concentration for a Notch‐Introduced FeCo Alloy

Equivalent circuit modeling of a piezo-patch energy harvester on a thin plate with AC–DC conversion

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