A rotational piezoelectric energy harvester based on trapezoid beam: Simulation and experiment

Wang, Jianxu; Su, Weizhou; Li, Jichao; Wang, Chunming

doi:10.1016/j.renene.2021.11.093

Cited by 41 publications

(14 citation statements)

References 45 publications

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“…We can obtain the output voltage ( V g )/energy ( E g )/power ( P g ) from once deformation on the basis of the vibration amplitude X (t) (equation (11)) of the piezo-cantilever (Wang et al, 2022)…”

Section: Analysis Model Of the Wheel-type Prehmentioning

confidence: 99%

“…Electromechanical coupling dynamical model was established using Hamilton’s principle to characterize the PREH (Zou et al, 2017). Wang et al proposed a magnetic excitation PREH to perform the condition monitoring of rotating machinery, where a non-contact magnetic plucking was adopted to improve the reliability of the PREHs (Wang et al, 2022). Liu et al designed a low frequency non-contact rotary piezoelectric energy harvester, which excited by magnetic coupling.…”

Section: Introductionmentioning

confidence: 99%

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Development and performance evaluation of a wheel-type cantilevered piezoelectric rotational energy harvester via an unfixed exciting magnet

Kan

Zhang

Wang

et al. 2023

Journal of Intelligent Material Systems and Structures

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A wheel-type cantilevered piezoelectric rotational energy harvester (wheel-type PREH) via an unfixed exciting magnet was presented to harvest energy from rotational motion without or far away from a fixed support. To verify the structural feasibility and figure out the effect of rolling exciting magnet and excited magnet on the dynamic characteristics and power generation performance of the wheel-type PREH, the theoretical analysis, simulation, fabrication and experimental testing were performed. The results showed that the performance of the wheel-type PREH depended on the rotary speeds, proof mass and piezo-cantilever mass, number of exciting magnets, cylindrical sleeve materials and so on. When other parameters were constant, there were multiple optimal rotary speeds for the maximal amplitude-ratio, output voltage, electrical energy and output power to achieve peak. Besides, the total number of voltage crests per second did not change with rotary speed. There was a constant optimal resistance load for the wheel-type PREH at different rotary speeds to achieve maximal power. The PREH prototype could yield a maximum output power of 0.74 mW at 767 r/min with optimal load resistance of 215 kΩ and 40 different color LEDs in parallel and a low power light strip could be lighted by wheel-type PREH.

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Section: Analysis Model Of the Wheel-type Prehmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development and performance evaluation of a wheel-type cantilevered piezoelectric rotational energy harvester via an unfixed exciting magnet

Kan

Zhang

Wang

et al. 2023

Journal of Intelligent Material Systems and Structures

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show abstract

Section: Introductionmentioning

confidence: 99%

“…[8] Piezoelectric energy harvesters (PEHs) that possess the features of simple architectures, reliability, and miniaturization have demonstrated remarkable potential and considerable industrial applications. [9][10][11] Therefore, the PEHs have been developed intensively to harvest mechanical energy from vibrations over the past few decades. [12][13][14][15][16][17][18][19][20][21] PEHs, such as cantilever, cymbal, and diaphragm-type harvesters, need to be optimized to match the external frequency for harvesting enough power because the energy these PEHs collected at nonnaturel frequency is small.…”

Section: Introductionmentioning

confidence: 99%

Simulation and Experiment of Trapezoidal Beam‐Based Piezoelectric Energy Harvesters

Wang

et al. 2023

Energy Tech

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Piezoelectric energy harvesters (PEHs) are thought to be one of the best ways to power wireless sensors. However, how to improve the electrical properties of PEHs is still a key matter. Herein, a trapezoidal beam (TB) is adopted to improve the electrical outputs of PEHs, where the elastic substrate and thinned piezoelectric ceramic element are combined to obtain a piezoelectric beam with 100 μm total thickness. The simulation results indicate that the TB‐based piezoelectric energy harvester (TB‐PEH) possesses a better electrical output performance than the traditional rectangular beam‐based piezoelectric energy harvester (RB‐PEH). The presented TB‐PEH can generate a 5.4 V voltage output, and an average power of 0.2 mW with the 55 kΩ optimal resistance. The 100, 220, and 470 μF capacitors are used to demonstrate charging from the TB‐PEH, and these capacitors are saturated at 5.1, 5.0, and 4.9 V during 40, 85, and 175 s charging time, respectively. The energy harvester can generate enough power to directly light up four light emitting diodes in real time, indicating its potential to be used as microenergy source for wireless sensor networks in mechanical vibration circumstance under harmonic vibration excitation. The proposed TB‐PEH is conclusively proved potential for charging low‐power electronic devices.

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“…However, there are still the problems of an inefficient energy transfer and low reliability. Although multi-modal harvesters have been reported in literature (U-shape [ 13 ], M-shape [ 14 ], H-shape [ 15 ],trapezoidal [ 16 ], etc. ), generating relatively large power outputs around each mode and effectively widening the bandwidth using the coupled multi-modal structures is a difficult task.…”

Section: Introductionmentioning

confidence: 99%

Design and Development of a Broadband Vibration Energy Harvester Suitable for Tractor Exhaust Cylinder Vibration

Zhou

Gong

et al. 2022

Sensors

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A large amount of vibration energy exists in the working environment of tractors. Therefore, the use of vibration energy harvesting technology to convert the vibration energy into electrical energy is a feasible way to supply power to low-power sensor equipment in agricultural machinery. Aiming at the problem in which the internal sensors of traditional tractors require built-in batteries or overlapping cables, this work proposes a broadband piezoelectric vibration energy harvester that could harvest the vibration energy from the tractor exhaust cylinder when the tractor is working. The vibration energy can be converted into electrical energy to power the air pressure sensor device. This experimental investigation shows that the energy harvester is composed of a folded piezoelectric energy harvester and a multi-source input synchronous electronic charge extraction circuit.The circuit has a high power density of 12,398 μW/(mm3·g2). Hence, it can convert vibration energy into a wide frequency range between 90–140 Hz and cause the air pressure sensor to operate.

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A rotational piezoelectric energy harvester based on trapezoid beam: Simulation and experiment

Cited by 41 publications

References 45 publications

Development and performance evaluation of a wheel-type cantilevered piezoelectric rotational energy harvester via an unfixed exciting magnet

Development and performance evaluation of a wheel-type cantilevered piezoelectric rotational energy harvester via an unfixed exciting magnet

Simulation and Experiment of Trapezoidal Beam‐Based Piezoelectric Energy Harvesters

Design and Development of a Broadband Vibration Energy Harvester Suitable for Tractor Exhaust Cylinder Vibration

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