Smart Sand—a wide bandwidth vibration energy harvesting platform

Marinkovic, Bozidar; Köşer, Hür

doi:10.1063/1.3097207

Cited by 115 publications

(72 citation statements)

References 13 publications

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“…However, rather than resonance tuning, the nonlinearity of the system itself can improve the performance of the energy harvester over a wider bandwidth. As reported in the available literature, the nonlinearities of energy harvesters are considered from two perspectives, i.e., nonlinear stiffness (Ramlan et al, 2010;Mann and Sims, 2009;Stanton et al, 2009;Erturk et al, 2009;Marinkovic and Koser, 2009;Soliman et al, 2009;Lin et al, 2010;Stanton et al, 2010) and nonlinear piezoelectric coupling (Triplett and Quinn, 2009). Compared to the nonlinear piezoelectric coupling, which results from the manufacturing process of piezoelectric material, the nonlinear stiffness of a harvester is relatively easier to achieve and control.…”

Section: Nonlinear Techniques For Wider Bandwidthmentioning

confidence: 99%

Toward Broadband Vibration-based Energy Harvesting

Tang

Yang

Soh

2010

Journal of Intelligent Material Systems and Structures

628

368

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The dramatic reduction in power consumption of current integrated circuits has evoked great research interests in harvesting ambient energy, such as vibrations, as a potential power supply for electronic devices to avoid battery replacement. Currently, most vibration-based energy harvesters are designed as linear resonators to achieve optimal performance by matching their resonance frequencies with the ambient excitation frequencies a priori. However, a slight shift of the excitation frequency will cause a dramatic reduction in performance. Unfortunately, in the vast majority of practical cases, the ambient vibrations are frequency-varying or totally random with energy distributed over a wide frequency spectrum. Hence, developing techniques to increase the bandwidth of vibration-based energy harvesters has become the next important problem in energy harvesting. This paper reviews the advances made in the past few years on this issue. The broadband vibration-based energy harvesting solutions, covering resonance tuning, 2 multimodal energy harvesting, frequency up-conversion and techniques exploiting nonlinear oscillations, are summarized in detail with regard to their merits and applicability in different circumstances.

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Section: Nonlinear Techniques For Wider Bandwidthmentioning

confidence: 99%

Toward Broadband Vibration-based Energy Harvesting

Tang

Yang

Soh

2010

Journal of Intelligent Material Systems and Structures

628

368

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“…Thus researchers have recently focused on the concept of broadband energy harvesting to solve this issue with different approaches. 5,6 This letter introduces a broadband piezoelectric power generator that exhibits large-amplitude periodic oscillations over a frequency range. Although the magnetoelastic structure is discussed here for piezoelectric energy harvesting, it can easily be extended to electromagnetic, electrostatic, and magnetostrictive energy harvesting techniques as well as to their hybrid combinations with similar devices.…”

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confidence: 99%

A piezomagnetoelastic structure for broadband vibration energy harvesting

Ertürk

Hoffmann

Inman

2009

Applied Physics Letters

896

648

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This letter introduces a piezomagnetoelastic device for substantial enhancement of piezoelectric power generation in vibration energy harvesting. Electromechanical equations describing the nonlinear system are given along with theoretical simulations. Experimental performance of the piezomagnetoelastic generator exhibits qualitative agreement with the theory, yielding large-amplitude periodic oscillations for excitations over a frequency range. Comparisons are presented against the conventional case without magnetic buckling and superiority of the piezomagnetoelastic structure as a broadband electric generator is proven. The piezomagnetoelastic generator results in a 200% increase in the open-circuit voltage amplitude (hence promising an 800% increase in the power amplitude).

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“…Nonlinearity in the spring stress-strain relationship can generate either a hardening, [30,31], or a softening behavior, [32,33]. In the first case the resonant frequency increases when the oscillation amplitude increases, Fig.…”

Section: Nonlinear Springsmentioning

confidence: 99%

MEMS Technologies for Energy Harvesting

Domínguez-Pumar

Pons-Nin

Chávez-Domínguez

2016

Nonlinearity in Energy Harvesting Systems

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The objective of this chapter is to introduce the technology of Microelectromechanical Systems, MEMS, and its application to emerging energy harvesting devices. The chapter begins with a general introduction to the most common MEMS fabrication processes. Next, the chapter follows with a survey of design mechanisms implemented in MEMS energy harvesters to provide nonlinear mechanical actuations. Mechanisms to produce bistable potential will be studied, such as by placing fixed magnets, buckling of beams, or by using slightly slanted clamped-clamped beams. Other nonlinear mechanisms are studied such as impact energy transfer, or the design of nonlinear springs. Finally, due to their importance in the field of MEMS and their application to energy harvesters, an introduction to the actuation with piezoelectric materials is made. Examples of energy harvesters found in the literature using this actuation principle are also presented.

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Smart Sand—a wide bandwidth vibration energy harvesting platform

Cited by 115 publications

References 13 publications

Toward Broadband Vibration-based Energy Harvesting

Toward Broadband Vibration-based Energy Harvesting

A piezomagnetoelastic structure for broadband vibration energy harvesting

MEMS Technologies for Energy Harvesting

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