A 500 Hz-wide kinetic energy harvester: Outperforming macroscopic electrodynamic arrays with piezoelectric arrays

Lamprecht, Lukas; Ehrenpfordt, Ricardo; Lim, Chong Kiat; Zimmermann, André

doi:10.1016/j.ymssp.2018.09.025

Cited by 8 publications

(8 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We investigate the effects of parametric amplification in order to estimate the parameter range needed for a parametrically amplified VEH. Our optimization goal is increased bandwidth, not peak power, since this increases the frequency-averaged volumetric power density of a harvester array by lowering the number of substructures necessary [9]. This poses a challenge towards the design of harvester structures [45].…”

Section: Resultsmentioning

confidence: 99%

“…Since acceleration peaks in vibration spectra are strongly correlated to shaft speeds, fixed resonance VEHs are not reasonable for IoT and I4.0 application. Instead, broadband and frequency tuning approaches are investigated in both academia and industry [9]- [11]. Besides complex designs and required internal controls for actively frequency tuned VEHs, energy consumption is a main disadvantage of resonance-following approaches.…”

Section: A Kinetic Energy Harvesting For Industrial Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

Parametric amplification of broadband vibrational energy harvesters for energy-autonomous sensors enabled by field-induced striction

Nabholz

Lamprecht

Mehner

et al. 2020

Mechanical Systems and Signal Processing

Self Cite

View full text Add to dashboard Cite

We investigate the influence of parametric excitations on MEMS vibration energy harvesters for energy autonomous sensor systems. In Industry 4.0 (or Industrial IoT) applications, interconnected sensors provide a means of data acquisition for automated control of the manufacturing process. Ensuring a continuous energy supply to the sensors is essential for their reliable operation. Manufacturing machines usually display a wide spectrum of vibration frequencies which needs to be covered by an array of harvester substructures in order to maintain the desired output level. We show that mechanical structures designed to implement a Helmholtz-Duffing oscillator have an increased bandwidth by exploiting several orders of parametric resonances. In contrast to concepts implementing parametric amplification in a multi-mode scenario, our concept is based on a single mechanical mode. Therefore, it is more robust against fabrication tolerances as the relevant multi-mode resonance conditions do not need to be matched on the level of single chips. Using exact transient simulations and semi-analytic models to showcase the relation of the Helmholtz-Duffing oscillator to the damped and driven Mathieu equation, we show that parametric resonances highly increase the bandwidth of the output power whenever high Helmholtz nonlinearities are present. To achieve the required nonlinearities, we suggest nonlinear stress-strain curves and we propose to achieve such nonlinearities through field-induced striction by magneto-or electrostriction. In contrast to existing approaches, where external fields are harvested using strictive effects, we employ external fields that manipulate the effective Young's modulus to achieve parametric excitations in a mechanical oscillator. Thus, we are able to propose a novel energy harvester concept incorporating strictive materials that exploits the effects of parametric excitations to achieve broadband vibrational energy harvesting. c 2020, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ U. Nabholz, L. Lamprecht and P. Degenfeld-Schonburg are with Robert

show abstract

Section: Resultsmentioning

confidence: 99%

Section: A Kinetic Energy Harvesting For Industrial Applicationsmentioning

confidence: 99%

Parametric amplification of broadband vibrational energy harvesters for energy-autonomous sensors enabled by field-induced striction

Nabholz

Lamprecht

Mehner

et al. 2020

Mechanical Systems and Signal Processing

Self Cite

View full text Add to dashboard Cite

show abstract

“…A novel trident (three-pronged spear) shaped piezoelectric energy harvester has been proposed by Upadrashta and Yang in [9] to collect power from wideband, low frequency, and low amplitude ambient vibrations. Lamprecht et al [10] investigated how multiple vibration harvesters can be combined to a macroscopic array configuration by aiming not on high resonance peak powers, but on close spectral overlaps in lower power regions with a bandwidth 500 Hz. In [11] a multiresonant structure comprising a clamped-clamped piezoelectric fiber composite generator has been proposed by Qi et al, with side mounted cantilevers, which are tuned by added masses to resonate at individual frequencies, resulting in a wider harvesting bandwidth.…”

Section: Introductionmentioning

confidence: 99%

System-Level Model and Simulation of a Frequency-Tunable Vibration Energy Harvester

et al. 2020

View full text Add to dashboard Cite

In this paper, we present a macroscale multiresonant vibration-based energy harvester. The device features frequency tunability through magnetostatic actuation on the resonator. The magnetic tuning scheme uses external magnets on linear stages. The system-level model demonstrates autonomous adaptation of resonance frequency to the dominant ambient frequencies. The harvester is designed such that its two fundamental modes appear in the range of (50,100) Hz which is a typical frequency range for vibrations found in industrial applications. The dual-frequency characteristics of the proposed design together with the frequency agility result in an increased operative harvesting frequency range. In order to allow a time-efficient simulation of the model, a reduced order model has been derived from a finite element model. A tuning control algorithm based on maximum-voltage tracking has been implemented in the model. The device was characterized experimentally to deliver a power output of 500 µW at an excitation level of 0.5 g at the respected frequencies of 63.3 and 76.4 Hz. In a design optimization effort, an improved geometry has been derived. It yields more close resonance frequencies and optimized performance.

show abstract

“…Recently, numerous studies have been investigated the use of piezoelectric energy harvesters (PEH) in various fields of application, such as human walking [2], railways [3], pavements [4][5][6], and bridges [7]. Several applications have emerged based on frequency and vibration studies [8]- [10], while others have been ASTESJ ISSN: 2415-6698 based on load or pressure acting on an energy harvesting device [4] and [11].…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers are examining the relationship between vibration and a resonance frequency that is capable of increasing the output power [8]. A vibration energy harvester with multiple nonlinear techniques can broaden the bandwidth of energy harvesting systems; however, there is a need to tune the resonance frequency [18], [19].…”

Section: Introductionmentioning

confidence: 99%

A Cavity Structure based Flexible Piezoelectric for Low-Frequency Vibration Energy Harvesting

Ahmad¹,

Sulaiman²,

Abdullah³

et al. 2020

Adv. sci. technol. eng. syst. j.

View full text Add to dashboard Cite

Piezoelectric energy harvesters (PEH) can be used in many areas of application, including human walking, railways, pavements and bridges. Piezoelectric energy harvesters are currently based on two types of external forces, namely pressure load and mechanical oscillation or vibration. A vibration energy harvesting (VEH) is a mechanical oscillation in a piezoelectric energy harvester that harvested electric energy. In the market, there is available energy harvesting device in good electric energy harvesting and very sensitivity. However, the price is too high and the fabrication process is too complex. Furthermore, one of the aimed of the research is to install the energy harvesting device at rotary compressor machine which has noise vibration frequency at 1 kHz to 10 kHz. This paper presented a cavity structure-based flexible piezoelectric vibration energy harvester (FPVEH) based on an IDE circuit for low-frequency vibration applications. A cavity structure (IDE circuity) combine with the flexible circuit (polyimide) and flexible membrane (polyvinylidene fluoride, PVDF) will increase the electric energy harvesting and sensitivity of the device. Therefore, the four designs (Design A to D) are used to investigate the effect of the electrode finger width and the gap between the electrode fingers (to investigate the cavity structure applying in the design). All designs have been characterized by FEA simulation using COMSOL Multiphysics 5.0 and experimental work using a sieve shaker vibration machine. A sieve shaker machine is worked as vibration frequency calibrator. However, the sieve machine can operate at 5 kHz and 7 kHz. Since these two vibration frequencies are in targeted vibration frequency. It is used as vibration frequency calibrator in this experimental work. The results from the FEA simulation and experimental work show the Design D has the highest electric energy harvesting compare to other designs. It has electric energy harvesting at 27.3 V for 1 minutes period. Design D has a wide electrode finger width and the wide gap between electrodes compare to other designs. The vibration frequency was also given the impact to energy harvesting whereby the vibration frequency at 5 kHz has the highest electric energy harvesting compare to vibration frequency at 7 kHz.

show abstract

A 500 Hz-wide kinetic energy harvester: Outperforming macroscopic electrodynamic arrays with piezoelectric arrays

Cited by 8 publications

References 72 publications

Parametric amplification of broadband vibrational energy harvesters for energy-autonomous sensors enabled by field-induced striction

Parametric amplification of broadband vibrational energy harvesters for energy-autonomous sensors enabled by field-induced striction

System-Level Model and Simulation of a Frequency-Tunable Vibration Energy Harvester

A Cavity Structure based Flexible Piezoelectric for Low-Frequency Vibration Energy Harvesting

Contact Info

Product

Resources

About

A 500 Hz-wide kinetic energy harvester: Outperforming macroscopic electrodynamic arrays with piezoelectric arrays

Cited by 8 publications

References 72 publications

Parametric amplification of broadband vibrational energy harvesters for energy-autonomous sensors enabled by field-induced striction

Parametric amplification of broadband vibrational energy harvesters for energy-autonomous sensors enabled by field-induced striction

System-Level Model and Simulation of a Frequency-Tunable Vibration Energy Harvester

A Cavity Structure based Flexible Piezoelectric for Low-Frequency Vibration Energy Harvesting

Contact Info

Product

Resources

About

A 500 Hz-wide kinetic energy harvester: Outperforming macroscopic electrodynamic arrays with piezoelectric arrays