Evaluation of the integration of the Wind-Induced Flutter Energy Harvester (WIFEH) into the built environment: Experimental and numerical analysis

Aquino, Angelo I.; Calautit, John Kaiser; Hughes, Ben Richard

doi:10.1016/j.apenergy.2017.06.041

Cited by 52 publications

(21 citation statements)

References 31 publications

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“…1 The advantage of energy harvesting lies in its sustainability and beneficial avoidance of battery replacement. 2,3 Harvesting environmental vibrations can be generally divided into two categories, that is, the preexisting base excitations resulting from the motion of machinery, structures, or human movements 4,5 and the flow-induced vibrations due to aeroelastic instabilities, such as vortexinduced vibration (VIV), 6 galloping, 7,8 flutter, 9,10 and buffeting, 11 or their synergetic effect. 12,13 Wind energy is a steady and pervasive power source in the environment.…”

Section: Discussionmentioning

confidence: 99%

Equivalent circuit representation of a vortex‐induced vibration‐based energy harvester using a semi‐empirical lumped parameter approach

et al. 2020

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Summary Small‐scale wind energy harvesting from vortex‐induced vibrations (VIV) has been introduced in recent years as a renewable power source for microelectronics and wireless sensors. Previous studies have focused on modeling and optimizing the VIV‐based piezoelectric energy harvester (VIVPEH) structures and simplified the complicated interface circuits as pure resistors with an alternating current (AC) output. In practice, an AC output is required to be transformed into a direct current (DC) followed by further regulations before being used for real applications. Incorporating the rectification and regulation, traditional theoretical and numerical models will become extremely cumbersome and even impossible. To address this issue, this work proposes an equivalent circuit model (ECM) for a typical VIVPEH. The Scanlan‐Ehsan aerodynamic force model is employed to describe the fluid‐structure interaction. Wind tunnel experiments are carried out to validate the derived model. The performances of the VIVPEH with AC and DC interface circuits are subsequently analyzed and compared to understand the influences of these circuits on the operational wind speed bandwidth, power output, vibration amplitude, and electrical damping.

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Section: Discussionmentioning

confidence: 99%

Equivalent circuit representation of a vortex‐induced vibration‐based energy harvester using a semi‐empirical lumped parameter approach

et al. 2020

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“…In contrast with the finite element model of [16] which require numerical code development, some efforts have been made to utilise commercial FEM and computational fluid dynamic (CFD) software for the energy harvesting simulation such as presented in [19][20][21][22][23]. Those models have been experimentally well validated, however, the analyses were only performed for short-circuit (no resistance load, R → 0) or opencircuit (R →∞) problems.…”

Section: Introductionmentioning

confidence: 99%

An iterative finite element method for piezoelectric energy harvesting composite with implementation to lifting structures under Gust Load Conditions

Akbar

Curiel-Sosa

2019

Composite Structures

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In this paper, a novel iterative finite element method (FEM) for energy harvesting purpose is presented. The new iterative FEM is implemented to solve the dynamic problems of piezoelectric-based energy harvester in the frequency and time domains. The validation against other methods from the literature shows the robustness and capabilities of the iterative FEM. Implementation to a transport aircraft wingbox with 14.5 m half span and an embedded piezoelectric layer is shown in some details. The energy harvesting potential of the wingbox due to the cruise and the 1-cosine gust loads is investigated. In addition, for the first time, stress and failure analyses of the structure with an active energy harvesting layer are performed. The results pointed out that the wingbox is still in a safe condition even when it is subjected to a 30 m/s gust amplitude while harvesting 51 kW power.

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“…It is impractical to shrink the size of wind turbines to harvest small wind energy due to higher manufacturing costs and lower energy harvesting efficiency. One promising solution is to utilize wind flow-induced aerodynamic instability (such as galloping [4,5], flutter [6,7], and vortex-induced vibration [8]) to extract vibration energy. The extracted energy from an vibration-based energy harvesting system can be converted into electricity using piezoelectric or electromagnetic means [9].…”

Section: Introductionmentioning

confidence: 99%

Effects of Electrical and Electromechanical Parameters on Performance of Galloping-Based Wind Energy Harvester with Piezoelectric and Electromagnetic Transductions

2019

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This paper presents an analysis of galloping-based wind energy harvesters with piezoelectric and electromagnetic transductions. The lumped parameter models of the galloping-based piezoelectric energy harvester (GPEH) and galloping-based electromagnetic energy harvester (GEMEH) are developed and the approximate analytical solutions of the equations are derived using the harmonic balance method (HBM). The accuracy of the approximate analytical solutions is validated by the numerical solutions. A parametric study is then conducted based on the validated models and solutions to understand the effects of the dimensionless load resistance, r, and electromechanical coupling strength (EMCS) on various quantities indicating the performance of the harvesters, including the dimensionless oscillating frequency, cut-in wind speed, displacement, and average power output. The results show that both r and EMCS can affect the dimensionless oscillating frequencies of the GPEH and GEMEH in a narrow frequency range around the natural frequency. A significant decrease in the displacement around r = 1 for GEPH and at a low r for GEMEH indicates the damping effect induced by the increase in EMCS. There are two optimal r to achieve the maximal power output for GPEH given strong EMCS while there is only one optimal r for GEMEH. Both GPEH and GEMEH show similar characteristics in that the optimal power outputs can reach saturation with an increase of the EMCS. The findings from the parametric study provide useful guidelines for the design of galloping-based energy harvesters with different energy conversion mechanisms.

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Evaluation of the integration of the Wind-Induced Flutter Energy Harvester (WIFEH) into the built environment: Experimental and numerical analysis

Cited by 52 publications

References 31 publications

Equivalent circuit representation of a vortex‐induced vibration‐based energy harvester using a semi‐empirical lumped parameter approach

Equivalent circuit representation of a vortex‐induced vibration‐based energy harvester using a semi‐empirical lumped parameter approach

An iterative finite element method for piezoelectric energy harvesting composite with implementation to lifting structures under Gust Load Conditions

Effects of Electrical and Electromechanical Parameters on Performance of Galloping-Based Wind Energy Harvester with Piezoelectric and Electromagnetic Transductions

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