Piezoelectric Energy Harvesting from Wind Using Coupled Bending-Torsional Vibrations

Deivasigamani, Arvind; McCarthy, Jesse; John, Sabu; Watkins, Simon; Trivailo, Pavel M.; Coman, F.

doi:10.5539/mas.v8n4p106

Cited by 16 publications

(10 citation statements)

References 19 publications

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“…Analyses of flapping-leaf energy harvesters were also performed by McCarthy et al [128,129] with smoke-flow visualization and tandem harvester arrangements and coauthors Deivasigamani et al [72] with a parallel-flow asymmetric configuration, where the offset of the leaf axes from the stalk axes induced torsional motions of stalk around axis x. It is actually a modal convergence flutter based harvester, yet due to the similar constructions to those by Li and Lipson [127], we put its reviews in this section of cross-flow flutter.…”

Section: Energy Harvesters Based On Cross-flowmentioning

confidence: 99%

Toward Small-Scale Wind Energy Harvesting: Design, Enhancement, Performance Comparison, and Applicability

Zhao

Yang

2017

Shock and Vibration

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The concept of harvesting ambient energy as an alternative power supply for electronic systems like remote sensors to avoid replacement of depleted batteries has been enthusiastically investigated over the past few years. Wind energy is a potential power source which is ubiquitous in both indoor and outdoor environments. The increasing research interests have resulted in numerous techniques on small-scale wind energy harvesting, and a rigorous and quantitative comparison is necessary to provide the academic community a guideline. This paper reviews the recent advances on various wind power harvesting techniques ranging between cm-scaled wind turbines and windmills, harvesters based on aeroelasticities, and those based on turbulence and other types of working principles, mainly from a quantitative perspective. The merits, weaknesses, and applicability of different prototypes are discussed in detail. Also, efficiency enhancing methods are summarized from two aspects, that is, structural modification aspect and interface circuit improvement aspect. Studies on integrating wind energy harvesters with wireless sensors for potential practical uses are also reviewed. The purpose of this paper is to provide useful guidance to researchers from various disciplines interested in small-scale wind energy harvesting and help them build a quantitative understanding of this technique.

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Section: Energy Harvesters Based On Cross-flowmentioning

confidence: 99%

Toward Small-Scale Wind Energy Harvesting: Design, Enhancement, Performance Comparison, and Applicability

Zhao

Yang

2017

Shock and Vibration

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“…However, torsional strains may increase the total energy harvesting potential of flutter harvesters. Alternate harvester configurations were investigated by [51,52] ( Fig. 12b), whereby the flow would excite both torsional and bending modes of the harvester.…”

Section: Movement-induced Excitation Harvestersmentioning

confidence: 99%

“…12b), whereby the flow would excite both torsional and bending modes of the harvester. Though previous studies stated that torsional modal excitation could add as much as 30% to total power output with base excitation [53], it was found that for their harvesters the flow-induced torsional excitation contributed several orders of magnitude less power output than the bending strains [51,52]. Moreover, the alternate configuration output less power over the wind speed testing range than the conventional configuration because of the deviation from pure bending.…”

Section: Movement-induced Excitation Harvestersmentioning

confidence: 99%

Fluttering energy harvesters in the wind: A review

McCarthy

Watkins

Deivasigamani

et al. 2016

Journal of Sound and Vibration

137

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The growing area of harvesting energy by aerodynamically-induced flutter in a fluid stream is reviewed. Numerous approaches were found to understand, demonstrate and [sometimes] optimise harvester performance based on Movement-Induced or Extraneously-Induced Excitation. Almost all research was conducted in smooth, unidirectional flow domains; either experimental or computational. The power outputs were found to be very low when compared to conventional wind turbines, but potential advantages could be lower noise levels. A consideration of the likely outdoor environment for fluttering harvesters revealed the flow would be highly turbulent and having a mean flow angle in the horizontal plane that could approach a harvester from any direction. Whilst some multiple harvester systems in smooth, well-aligned flow found enhanced efficiency (due to beneficial wake interaction) this would require an invariant flow approach angle. It was concluded that further work needs to be performed to find a universally accepted metric for efficiency and to understand the effects of the realities of the outdoors, including the highly variable and turbulent flow conditions likely to be experienced.

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“…When a mechanical resonator is immersed in a fluid flow, aerodynamic phenomena (such as vortex shedding, fluttering, and galloping) may appear around or on the structure. As a result, vibration can be observed as shown in Figure 10 , which presents the most common aerodynamic mechanisms, Figure 10 A vortex shedding with a bluff body, Figure 10 B flutter with attachment of an airfoil, Figure 10 C galloping with attachment of a prismatic object, and Figure 10 D flapping leaf [ 65 , 66 ].…”

Section: Portable Wind Energy Harvesting Mechanical Mechanismsmentioning

confidence: 99%

Portable Wind Energy Harvesters for Low-Power Applications: A Survey

Nabavi

Zhang

2016

Sensors

107

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Energy harvesting has become an increasingly important topic thanks to the advantages in renewability and environmental friendliness. In this paper, a comprehensive study on contemporary portable wind energy harvesters has been conducted. The electrical power generation methods of portable wind energy harvesters are surveyed in three major groups, piezoelectric-, electromagnetic-, and electrostatic-based generators. The paper also takes another view of this area by gauging the required mechanisms for trapping wind flow from ambient environment. In this regard, rotational and aeroelastic mechanisms are analyzed for the portable wind energy harvesting devices. The comparison between both mechanisms shows that the aeroelastic mechanism has promising potential in producing an energy harvester in smaller scale although how to maintain the resonator perpendicular to wind flow for collecting the maximum vibration is still a major challenge to overcome for this mechanism. Furthermore, this paper categorizes the previously published portable wind energy harvesters to macro and micro scales in terms of their physical dimensions. The power management systems are also surveyed to explore the possibility of improving energy conversion efficiency. Finally some insights and research trends are pointed out based on an overall analysis of the previously published works along the historical timeline.

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Piezoelectric Energy Harvesting from Wind Using Coupled Bending-Torsional Vibrations

Cited by 16 publications

References 19 publications

Toward Small-Scale Wind Energy Harvesting: Design, Enhancement, Performance Comparison, and Applicability

Toward Small-Scale Wind Energy Harvesting: Design, Enhancement, Performance Comparison, and Applicability

Fluttering energy harvesters in the wind: A review

Portable Wind Energy Harvesters for Low-Power Applications: A Survey

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