Parametric study of a novel vibro-impact energy harvesting system with dielectric elastomer

Yurchenko, Daniil; Lai, Zhihui; Thomson, Gordon; Val, Dimitri V.; Bobryk, Roman V.

doi:10.1016/j.apenergy.2017.10.006

Cited by 75 publications

(23 citation statements)

References 44 publications

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“…These include, among others: generators which exploit a fluid's pressure to generate a bubble-like expansion of a tubular DEG membrane; [49] longitudinally stretched roll (or tube) DEG; [23,50] and vibro-impact topologies, in which planar DEG membranes are deformed out-of-plane by impact with a vibrating bluff body. [51] An overview of the features for the different topologies is shown in Table 1, which presents information on the deformation kinematics, and the trend of capacitance and convertible energy as a function of the stretches.…”

Section: Topologiesmentioning

confidence: 99%

“…These include, among others: generators which exploit a fluid's pressure to generate a bubble‐like expansion of a tubular DEG membrane; [ 49 ] longitudinally stretched roll (or tube) DEG; [ 23,50 ] and vibro‐impact topologies, in which planar DEG membranes are deformed out‐of‐plane by impact with a vibrating bluff body. [ 51 ]…”

Section: Generalities On Degsmentioning

confidence: 99%

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A Review of Dielectric Elastomer Generator Systems

Moretti

Rosset

Vertechy

et al. 2020

Advanced Intelligent Systems

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Dielectric elastomer generator systems (DEGSs) are a class of electrostatic softtransducers capable of converting oscillating mechanical power from different sources into usable electricity. Over the past years, a diversity of DEGSs has been conceived, integrated, and tested featuring diverse topologies and implementation characteristics tailored on different applications. Herein, the recent advances on DEGSs are reviewed and illustrated in terms of design of hardware architectures, power electronics, and control, with reference to the different application targets, including large-scale systems such as ocean wave energy converters, and small-scale systems such as human motion or ambient vibration energy harvesters. Finally, challenges and perspectives for the advancement of DEGSs are identified and discussed.

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Section: Topologiesmentioning

confidence: 99%

Section: Generalities On Degsmentioning

confidence: 99%

A Review of Dielectric Elastomer Generator Systems

Moretti

Rosset

Vertechy

et al. 2020

Advanced Intelligent Systems

View full text Add to dashboard Cite

show abstract

“…The Marine Renewable Energy Laboratory (MRELab) further developed the VIVACE to harvest the hydrokinetic power using the electromagnetic transduction. In recent years, energy harvesting technologies such as electromagnetic, 16 dielectric, 17,18 and triboelectric [19][20][21] have been reported by researchers, besides which piezoelectric energy harvesting has been studied widely because of its high voltage output, high power density, and ease of miniaturization. [22][23][24][25][26][27][28][29][30] Dai et al 31 presented a theoretical model for a linear VIV-based piezoelectric energy harvester (VIVPEH), where the wake oscillator model was employed to formulate the vortexinduced aerodynamic force acting on the cylinder.…”

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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“…However, these DEGs cannot be used directly in vibrational energy harvesting. Currently, a type of impact-based DEGs, such as the vibro-impact (VI) DEG system proposed by the authors previously [50][51][52][53], appeared in the past years providing a novel design for DE-based VEH. Especilly, the authors have proposed a galloping-based wind energy harvester with a VI DEG [43].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Impact-Based Energy Conversion of a Dielectric Elastomer Membrane

et al. 2020

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Dielectric elastomer generators (DEGs) provide a new solution for vibrational energy harvesting. Currently, a type of impact-based DEGs, which can harvest energy from ambient vibrations, has been proposed and studied through simulations. However, the energy conversion mechanism and the performance evaluation approach of such impact-based DEGs have not been fully studied yet, thus limiting the reliability of the research on the system design/optimization and performance evaluation. In this paper, a single-sided impact (SSI) model is proposed to reveal the impact-based energy conversion mechanism. Based on this model, a complete four-stage impact process is analyzed to reveal the energy conversion mechanism, and the electrical outputs and energy conversion efficiency are derived as the energy harvesting performance evaluation indexes. To use the developed analytical model to predict the system electrical response accurately, some important parameters including the coefficient of restitution (COR) and largest deflection of the membrane at impacts were obtained experimentally, and the system output voltages at impacts were measured to verify the theoretical approaches in calculating the system electrical outputs and studying the parameters' influences. Furthermore, the influences of the pre-stretched ratio, impact velocity, and input voltage on the system energy harvesting performance are studied through simulations. The research results can provide guidelines to improve the energy harvesting performance of the impact-based DEGs in real applications.

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Parametric study of a novel vibro-impact energy harvesting system with dielectric elastomer

Cited by 75 publications

References 44 publications

A Review of Dielectric Elastomer Generator Systems

A Review of Dielectric Elastomer Generator Systems

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

Investigation on the Impact-Based Energy Conversion of a Dielectric Elastomer Membrane

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