Wideband piezoelectric energy harvester design using parallel connection of multiple beams

Naval, Sourav; Sinha, Prasun; Das, Nikhil Kumar; Anand, Ashutosh; Kundu, Sudip

doi:10.1504/ijnp.2020.109545

Cited by 10 publications

(3 citation statements)

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“…It is worthwhile to capture the unused mechanical vibrations scattered in the ambient and convert them into useful electrical power. Electromagnetic [7], electrostatic [8], and piezoelectric [9] energy harvesting mechanisms are the three commonly used vibration energy harvesters employed alone or in hybrid mode [10][11][12] along with the other harvesters. In the last decade, triboelectric nanogenerator [13,14] has emerged and gained popularity as a new category of the electrostatic energy harvester.…”

Section: Introductionmentioning

confidence: 99%

Direct current triboelectric nanogenerators: a review

Naval¹,

Jain²,

Mallick³

2022

J. Micromech. Microeng.

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Rapid advancements in the Internet of Things (IoT) have revolutionized the world by creating a proliferation of low-power wireless devices and sensor nodes. The issue of powering these devices remains a challenge as they require regulated direct current (DC) supply for their operation. Mechanical energy scavenging mechanisms are viewed and promoted as renewable powering solutions for low-power electronics. However, such energy harvesting mechanisms generate alternating current (AC). Converting AC to DC is a critical issue as it involves using a rectifier, which is not a preferred option considering additional circuitry, power requirements along with the significant threshold voltage of even the most state-of-the-art diodes. DC Triboelectric Nanogenerators (DC-TENG) have emerged as a direct powering solution based on the triboelectric effect, similar to the conventional AC-TENG devices. Such devices incorporate specific strategies like electrostatic breakdown, mechanical switching, and dynamic Schottky junction to generate a unidirectional current. Based on these strategies, different topologies for DC-TENG devices have been developed by researchers over time. Since its inception in 2014, the study on DC-TENG has rapidly emerged and expanded. This article reviews the progress made in association with DC-TENG mechanisms and topologies, theoretical analysis, comparative study, and applications. This article also examines the challenges, recent advancements, and future research prospects in this domain.

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Section: Introductionmentioning

confidence: 99%

Direct current triboelectric nanogenerators: a review

Naval¹,

Jain²,

Mallick³

2022

J. Micromech. Microeng.

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“…Wide operation bandwidth is essential to capture the ambient vibrational energy, which tends to be stochastic, irregular, and distributed over low frequencies (<100 Hz). Several strategies [18] have been reported in the literature for widening the bandwidth, like employing nonlinear springs [19,20], multimodal harvesting [21,22], use of mechanical stoppers [23][24][25], tuning the frequency response of generator [26][27][28] and employing an array of generators [29][30][31]. The nonlinear spring design tends to be intricate and custom-designed for specific load-displacement relationships, not conforming to a generalized design procedure.…”

Section: Introductionmentioning

confidence: 99%

Bandwidth tunable vibration energy harvester based on hybrid triboelectric-piezoelectric array

et al. 2022

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In this work, we present a highly effective and scalable design strategy of a triboelectric-piezoelectric hybrid array of three cantilever beams stacked over each other (wideband operation regime), which can also be rotated around their mean position to vibrate freely without impacting any other layer (narrowband operation regime). Contrary to a unique frequency response exhibited by conventional devices, the proposed device can switch between narrowband and wideband frequency responses around different central frequencies. This work elaborately discusses the frequency response of mechanical stopper-based PEG and TEGs at varying gap lengths, excitations, and resonant frequencies, and the design of the hybrid array is optimized based on it. The performance of this device is characterized using simulation analysis and experimental validation. Experimentally, the device generates net power greater than 0.3 µW (Piezoelectric) and 0.4 µW (Triboelectric) continually between the frequencies of 30 to 60 Hz in the wideband operation regime and output power of 0.81 µW, 0.65 µW, and 0.62 µW at 18, 27, and 36 Hz in the narrowband operation regime under mechanical excitation of 0.75g. The remarkable performance of the device at different frequency ranges demonstrates its potential in various harvesting and sensing applications.

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“…The vibration energy harvester (EH) converts vibration energy into useable electric energy. Vibration energy can be converted into electrical energy using electrostatic [1,2], electromagnetic [3,4] and piezoelectric (PZ) mechanisms [5][6][7][8][9][10][11][12][13]. The piezoelectric transducer is the most favoured, as it has high energy density, easy integration in CMOS technology, high durability, and it does not need any external voltage source [10].…”

Section: Introductionmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Anand,

Pal,

Kundu

2021

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In this paper, the performance and frequency bandwidth of the piezoelectric energy harvester (PZEH) is improved by introducing two permanent magnets attached to the proof mass of a dual beam structure. Both magnets are in the vicinity of each other and attached in such a way to proof mass of a dual beam so that they create a magnetic field around each other. The generated magnetic field develops a repulsive force between the magnets, which improves electrical output and enhances the bandwidth of the harvester. The simple rectangular cantilever structure with and without magnetic tip mass has a frequency bandwidth of 4 Hz and 4.5 Hz, respectively. The proposed structure generates a peak voltage of 20 V at a frequency of 114.51 Hz at an excitation acceleration of 1 g (g= 9.8 m/s 2 ). The peak output power of a proposed structure is 25.5 µW. The operational frequency range of a proposed dual beam cantilever with a magnetic tip mass of 30 mT is from 102.51 Hz to 120.51 Hz, i.e., 18 Hz. The operational frequency range of a dual beam cantilever without magnetic tip mass is from 104.18 Hz to 118.18 Hz, i.e., 14 Hz. There is an improvement of 22.22% in the frequency bandwidth of the proposed dual beam cantilever with a magnetic tip mass of 30 mT than the dual beam without magnetic tip mass.

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Wideband piezoelectric energy harvester design using parallel connection of multiple beams

Cited by 10 publications

References 0 publications

Direct current triboelectric nanogenerators: a review

Direct current triboelectric nanogenerators: a review

Bandwidth tunable vibration energy harvester based on hybrid triboelectric-piezoelectric array

Bulletin of the Polish Academy of Sciences: Technical Sciences

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