Frequency band widening technique for cantilever-based vibration energy harvesters through dynamics of fluid motion

Dhone, Mayuri; Gawatre, Poonam G.; Balpande, Suresh

doi:10.1016/j.mset.2018.06.002

Cited by 18 publications

(4 citation statements)

References 11 publications

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“…In this research the variation in time of the resonant frequency was calculated with the model presented in [24]. Further developments of the research on liquid-filled masses included the use of different liquids: glycerin, honey and motor oil in [25], liquid metal in [26]. In [27] the possibility of using a magnetic actuation to control the location of a ferro-fluid liquid was analyzed.…”

Section: Vibration Energy Harvesting By Means Of Piezoelectric Cantil...mentioning

confidence: 99%

Energy Harvesting From Bicycle Vibrations

Doria

Marconi

Moro

2021

IEEE Trans. on Ind. Applicat.

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The problem of frequency tuning a cantilever piezo-harvester to the typical vibrations of a bicycle is here investigated. This is key to optimize the energy harvesting performance. Road tests with a bicycle on a typical city track are first carried out to measure the power spectral density of bike vibrations. Both analytical and experimental methods are used to estimate the average electric power that can be harvested by a piezo-harvester with a solid tip mass. This solution is compared to a tuning strategy based on a liquid tip mass by using a novel analytical method for simulating frequency response.

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Section: Vibration Energy Harvesting By Means Of Piezoelectric Cantil...mentioning

confidence: 99%

Energy Harvesting From Bicycle Vibrations

Doria

Marconi

Moro

2021

IEEE Trans. on Ind. Applicat.

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“…This ambient energy is the key solution to resolve power related issue which also recognized as a promising technology. Lately it becomes a highly demanded for harvesting the energy from ambient power source as it can power the Internet of Things or commonly used in replacing batteries in the remote area [1][2]. This energy known for its narrow bandwidth which become the main issue of the energy harvester.…”

Section: Introductionmentioning

confidence: 99%

Vibration Energy Regeneration System Using Piezoelectric Sensor for Wideband Application

Azhar

Basari

Mohamad

2022

EmAIT

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This paper presents a method for widening bandwidth by using non-uniform mass which use the concept of center of gravity. Piezoelectric acts as a tool to convert vibration energy to electrical energy. The displacement from the liquid movement plays a role to enhance the bandwidth as the beam bends. The bandwidth is widened 2 times higher compared without tip mass and 1.6 times increased than that of solid tip-mass. High viscosity and density will give a greater effect on the bandwidth at low volume compared to low properties of fluid. Rectangular container can resist the tension of liquid due to high viscosity and volume. The fluid-filled mass technique widened the bandwidth without reducing the harvested power.

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“…This may not be favoured in practice when space is limited for the harvester or the output power is also a crucial feature. Researchers attempted to tackle this issue by introducing a fluidic tip mass [17] or a T-shaped beam [13]. The fluidic (honey-motor oil mixture encased in a sealed box) tip mass helped to broaden the bandwidth from 4 Hz to 10 Hz without degrading the harvested power [17].…”

Section: Introductionmentioning

confidence: 99%

“…Researchers attempted to tackle this issue by introducing a fluidic tip mass [17] or a T-shaped beam [13]. The fluidic (honey-motor oil mixture encased in a sealed box) tip mass helped to broaden the bandwidth from 4 Hz to 10 Hz without degrading the harvested power [17]. Similarly, the T-shaped beam was able to increase the bandwidth by over 200 % without affecting the peak output power [13].…”

Section: Introductionmentioning

confidence: 99%

A vibrational energy harvester based on Soft-Nonlinearity for truly random excitation

Trigona

Palosaari

Bai

2020

2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

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In this paper, we present a nonlinear energy harvester that is based on a "soft-mode" nonlinearity and is able to work in presence of a truly random excitations. The proposed harvester is configured with a cantilever beam structure, and, at the tip is a cylindrical container filled with freely moving iron balls. The nonlinearity is implemented through the container, as a piecewise function. This structure, in presence of noise, can be assumed as a second order (mass-spring-damper) nonlinear system where the length of the spring changes as a function of external vibration. As will be demonstrated, this nonlinearity will improve the performance of the energy harvester under random excitation. In comparison, the conventional approach based on resonant oscillators is able to collect energy only around its mechanical natural frequency, while the solution pursued here will present a wide spectrum of response. Furthermore, the implemented nonlinearity here does not possess any barrier of potential or mechanical threshold. Because of this, it is able to work at weak signal levels and without mixture of periodic signals. A piezoelectric element has been used to convert the mechanical vibrations into an electrical signal. The system has been modeled and simulated. Experimental validations have been carried out, demonstrating the suitability of the proposed solution.

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Frequency band widening technique for cantilever-based vibration energy harvesters through dynamics of fluid motion

Cited by 18 publications

References 11 publications

Energy Harvesting From Bicycle Vibrations

Energy Harvesting From Bicycle Vibrations

Vibration Energy Regeneration System Using Piezoelectric Sensor for Wideband Application

A vibrational energy harvester based on Soft-Nonlinearity for truly random excitation

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