A two-dimensional electromagnetic vibration energy harvester with variable stiffness

Imbaquingo, Carlos; Bahl, Christian; Insinga, Andrea Roberto; Bjørk, Rasmus

doi:10.1016/j.apenergy.2022.119650

Cited by 24 publications

(8 citation statements)

References 25 publications

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“…Compared to the harvester presented in Ref. [29], which produced a maximum power of 27 mW at an amplitude of 2 mm, the power produced here of ∼1 mW is substantially less. However, the harvester in Ref.…”

Section: Discussioncontrasting

confidence: 54%

“…However, contrary to the device presented in this work, the harvester in Ref. [29] is round and does not have any shape asymmetries that results in different internal resonance frequencies.…”

Section: Introductionmentioning

confidence: 66%

“…However, the harvester in Ref. [29], while of the same size as the device presented here, contains many more magnets and is a more complicated design. The magnetization direction of the moving magnet was also optimized with respect to the coils in that work, which has not been done here.…”

Section: Discussionmentioning

confidence: 99%

“…[28], where a eccentric mass in oscillatory motion can under certain conditions be made to rotate in a 2D pattern. Finally, in a recent publication, the authors of this work presented a two-dimensional electromagnetic vibration harvester with variable magnetic stiffness and electromagnetic damping [29]. This device has a free-to-move cylindrical magnetic structure with a set of bearings located on top and bottom, a couple of coils located on top and bottom of the device and finally a fixed system of disc-shaped magnets placed inside a ring holder.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Two-dimensional elliptically shaped electromagnetic vibration energy harvester

Imbaquingo¹,

Bahl²,

Insinga³

et al. 2023

Sensors and Actuators A: Physical

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Section: Discussioncontrasting

confidence: 54%

Section: Introductionmentioning

confidence: 66%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Two-dimensional elliptically shaped electromagnetic vibration energy harvester

Imbaquingo¹,

Bahl²,

Insinga³

et al. 2023

Sensors and Actuators A: Physical

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“…Likewise, attaching a coil winding to a rod that is exposed to ambient vibrations and vibrating this through a double concentric Halbach array magnetic structure can also be used to harvest power [207]. It is also possible to modify the one-directional movement of the free magnet in an EMEH to a multi-dimensional EH by making the fixed magnet similar to a doughnut-shaped container [208] and such devices have recently been shown to have a larger and more easily tunable harvesting bandwidth compared to monostable EMEHs [209,210]. Finally, permanent magnets and springs can also be combined [211,212] to specifically harvest power from very low-frequency vibrations.…”

Section: Devicementioning

confidence: 99%

Powering internet-of-things from ambient energy: a review

et al. 2023

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Internet-of-thing (IoT) is an assembly of devices that collect and share data with other devices and communicate via the internet. This massive network of devices, generates and communicates data and is the key to the value in IoT, allowing access to raw information, gaining insight, and making an intelligent decisions. Today, there are billions of IoT devices such as sensors and actuators deployed. Many of these applications are easy to connect, but those tucked away in hard-to-access spots will need to harvest ambient energy. Therefore, the aim is to create devices that are self-report in real-time. Efforts are underway to install a self-powered unit in IoT devices that can generate sufficient power from environmental conditions such as light, vibration, and heat. In this review paper, we discuss the recent progress made in materials and device development in power- and, storage units, and power management relevant for IoT applications. This review paper will give a comprehensive overview for new researchers entering the field of IoT and a collection of challenges as well as perspectives for people already working in this field.

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Harvesting Magneto‐Acoustic Waves Using Magnetic 2D Chromium Telluride (CrTe₃)

Chowde Gowda,

Kartsev,

Tiwari

et al. 2024

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A vast majority of electrical devices have integrated magnetic units, which generate constant magnetic fields with noticeable vibrations. The majority of existing nanogenerators acquire energy through friction/mechanical forces and most of these instances overlook acoustic vibrations and magnetic fields. Magnetic two‐dimensional (2D) tellurides present a wide range of possibilities for devising a potential flexible energy harvester. 2D chromium telluride (2D CrTe3) is synthesized, which exhibits ferromagnetic behavior with a higher T c of ≈224 K. The structure exhibits stable high remnant magnetization, making 2D CrTe3 a potential material for harvesting magneto‐acoustic waves. A magneto‐acoustic nanogenerator (MANG) is fabricated and the basic mechanical stability and sensitivity of the device with change in load conditions are tested. A high surface charge density of 2.919 mC m−2 is obtained for the device. The thermal strain created in the lattice structure is examined using in‐situ Raman spectroscopy. The magnetic anisotropy energy (MAE) responsible for long‐range FM ordering is calculated by theoretical modelling with insights into opening of electronic bandgap which enhances the flexoelectric effects. The MANG can be a potential NG to synergistically tap into the magneto—acoustic vibrations generated from the frequency changes of a vibrating device such as loudspeakers.

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A two-dimensional electromagnetic vibration energy harvester with variable stiffness

Cited by 24 publications

References 25 publications

Two-dimensional elliptically shaped electromagnetic vibration energy harvester

Two-dimensional elliptically shaped electromagnetic vibration energy harvester

Powering internet-of-things from ambient energy: a review

Harvesting Magneto‐Acoustic Waves Using Magnetic 2D Chromium Telluride (CrTe₃)

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A two-dimensional electromagnetic vibration energy harvester with variable stiffness

Cited by 24 publications

References 25 publications

Two-dimensional elliptically shaped electromagnetic vibration energy harvester

Two-dimensional elliptically shaped electromagnetic vibration energy harvester

Powering internet-of-things from ambient energy: a review

Harvesting Magneto‐Acoustic Waves Using Magnetic 2D Chromium Telluride (CrTe3)

Contact Info

Product

Resources

About

Harvesting Magneto‐Acoustic Waves Using Magnetic 2D Chromium Telluride (CrTe₃)