Design and Experimental Investigation of a Rotational Piezoelectric Energy Harvester with an Offset Distance from the Rotation Center

Liu, Xiangfu; Hengyang, Wang; Wang, Sheng; Guan, Mingjie

doi:10.3390/mi13030388

Cited by 11 publications

(4 citation statements)

References 28 publications

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“…4) Experiments confirm that the proposed L-PREH has a maximum peak-to-peak output voltage of 24 V and a power of 0.27 mW, which can drive low-power devices such as LEDs. Febbo et al [28] Cantilever beams connected by springs Gravity -0.105 2019 Rui et al [29] Cantilever beam with free end limited structure Gravity -0.082-1.003 2022 Shi et al [35] Frequency up-conversion Rotating rolling ball drive About 14.5 6.32 2022 Chen et al [36] A clamped-clamped beam Shaker vibrates 2.39 0.05 2022 Rizal et al [37] The structure is embedded in a rotating spindle Rotating magnetic force 19 3.5 2022 Chen et al [30] Harvester with hollow mass Gravity…”

Section: Discussionmentioning

confidence: 99%

“…Adopting the cantilever beam structure and designing the limit structure, the prototype can achieve an output power of 82–1003 μW at a speed of 50–70 km h −1 . Chen et al [ 30 ] developed a rotating energy harvester mounted on a rotating hub. The piezoelectric cantilever beam vibrates periodically with rotation under gravity, and the output voltage and power can reach 20 V and 2.308 mW over a wide range of frequencies.…”

Section: Introductionmentioning

confidence: 99%

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An Inertial Noncontact Piezoelectric Rotary Energy Harvester with Linear Reciprocating Motion

Zheng,

He,

Jiang

et al. 2023

Physica Status Solidi (a)

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Herein, an inertial noncontact piezoelectric rotary energy harvester with linear reciprocating motion (L‐PREH) is presented. The existing piezoelectric rotary harvester employing gravity excitation has limited performance when the rotation speed is high due to the negative influence of centrifugal force. L‐PREH translates rotational motion into linear motion via the transmission chain and employs inertial force excitation to overcome high‐speed performance limitations. Using the Euler–Bernoulli beam theory, the motion governing equations of piezoelectric transducers have been derived, and an electromechanical coupling model has been constructed. Moreover, the piezoelectric transducer is simulated and analyzed. The control variable approach is used to explore the key parameters impacting output performance. When the mass is positioned in symmetrical method, the guide rod is fixed in noncentral place, the limiter is fixed in longest distance, the distance between the mass's center and the main frame is the maximum, and the rotating speed is 450 RPM, the maximum peak‐to‐peak output voltage of an L‐PREH single transducer is 24 V. The highest power of two piezoelectric transducers linked in parallel with a load resistance of 400 kΩ is 0.27 mW, which can light up more than 70 light‐emitting diodes. The L‐PREH can drive low‐power devices.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Inertial Noncontact Piezoelectric Rotary Energy Harvester with Linear Reciprocating Motion

Zheng,

He,

Jiang

et al. 2023

Physica Status Solidi (a)

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“…Conversely, REHs that utilize gravity for external excitation to generate the output can effectively avoid this issue. In the work by Guan et al [ 39 ], researchers fixed one end of the piezoelectric beam on the rotor, while another end had a mass block attached, with the center of gravity aligned with the rotation center. During the rotation of the REH, the periodic deformation of the piezoelectric beam was driven by the gravitational force, converting mechanical energy into electrical energy.…”

Section: Introductionmentioning

confidence: 99%

Investigation of a Novel Ultra-Low-Frequency Rotational Energy Harvester Based on a Double-Frequency Up-Conversion Mechanism

Li,

Xia,

Yang

et al. 2023

Micromachines

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Due to their lack of pollution and long replacement cycles, piezoelectric energy harvesters have gained increasing attention as emerging power generation devices. However, achieving effective energy harvesting in ultra-low-frequency (<1 Hz) rotational environments remains a challenge. Therefore, a novel rotational energy harvester (REH) with a double-frequency up-conversion mechanism was proposed in this study. It consisted of a hollow cylindrical shell with multiple piezoelectric beams and a ring-shaped slider with multiple paddles. During operation, the relative rotation between the slider and the shell induced the paddles on the slider to strike the piezoelectric beams inside the shell, thereby causing the piezoelectric beams to undergo self-excited oscillation and converting mechanical energy into electrical energy through the piezoelectric effect. Additionally, by adjusting the number of paddles and piezoelectric beams, the frequency of the piezoelectric beam struck by the paddles within one rotation cycle could be increased, further enhancing the output performance of the REH. To validate the output performance of the proposed REH, a prototype was fabricated, and the relationship between the device’s output performance and parameters such as the number of paddles, system rotation speed, and device installation eccentricity was studied. The results showed that the designed REH achieved a single piezoelectric beam output power of up to 2.268 mW, while the REH with three piezoelectric beams reached an output power of 5.392 mW, with a high power density of 4.02 μW/(cm3 Hz) under a rotational excitation of 0.42 Hz, demonstrating excellent energy-harvesting characteristics.

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“…More and more low-power consumption devices have been used in the area of wireless sensors, portable devices, structural health monitoring and the internet-of-things. The piezoelectric energy harvester has become a promising way of capturing wasted vibration energy in the environment to provide the sufficient power for small devices [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Vibration Energy Harvesting from the Subwavelength Interface State of a Topological Metamaterial Beam

Wang

Zhu

et al. 2022

Micromachines

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Topological metamaterial has been a research hotpot in both physics and engineering due to its unique ability of wave manipulation. The topological interface state, which can efficiently and robustly centralize the elastic wave energy, is promising to attain high-performance energy harvesting. Since most of environmental vibration energy is in low frequency range, the interface state is required to be designed at subwavelength range. To this end, this paper developed a topological metamaterial beam with local resonators and studied its energy-harvesting performance. First, the unit cell of this topological metamaterial beam consists of a host beam with two pairs of parasitic beams with tip mass. Then, the band structure and topological features are determined. It is revealed that by tuning the distance between these two pairs of parasitic beams, band inversion where topological features inverse can be obtained. Then, two sub-chains, their design based on two topologically distinct unit cells, are assembled together with a piezoelectric transducer placed at the conjunction, yielding the locally resonant, topological, metamaterial, beam-based piezoelectric energy harvester. After that, its transmittance property and output power were obtained by using the frequency domain analysis of COMSOL Multiphysics. It is clear that the subwavelength interface state is obtained at the band-folding bandgap. Meanwhile, in the interface state, elastic wave energy is successfully centralized at the conjunction. From the response distribution, it is found that the maximum response takes place on the parasitic beam rather than the host beam. Therefore, the piezoelectric transducer is recommended to be placed on the parasitic beam rather than host beam. Finally, the robustness of the topological interface state and its potential advantages on energy harvesting were studied by introducing a local defect. It is clear that in the interface state, the maximum response is always located at the conjunction regardless of the defect degree and location. In other words, the piezoelectric transducer placed at the conjunction can maintain a stable and high-efficiency output power in the interface state, which makes the whole system very reliable in practical implementation.

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Design and Experimental Investigation of a Rotational Piezoelectric Energy Harvester with an Offset Distance from the Rotation Center

Cited by 11 publications

References 28 publications

An Inertial Noncontact Piezoelectric Rotary Energy Harvester with Linear Reciprocating Motion

An Inertial Noncontact Piezoelectric Rotary Energy Harvester with Linear Reciprocating Motion

Investigation of a Novel Ultra-Low-Frequency Rotational Energy Harvester Based on a Double-Frequency Up-Conversion Mechanism

Vibration Energy Harvesting from the Subwavelength Interface State of a Topological Metamaterial Beam

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