A design method for low-frequency rotational piezoelectric energy harvesting in micro applications

2019 ◽  
Vol 26 (3) ◽  
pp. 981-991
Author(s):  
Xiaobo Rui ◽  
Zhoumo Zeng ◽  
Yu Zhang ◽  
Yibo Li ◽  
Hao Feng ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Design Method ◽  
Low Frequency ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy

Study of Cantilever Structures Based on Piezoelectric Materials for Energy Harvesting at Low Frequency of Vibration

2014 ◽  
Vol 976 ◽  
pp. 159-163 ◽  
Author(s):  
Roberto Ambrosio ◽  
Hector Gonzalez ◽  
Mario Moreno ◽  
Alfonso Torres ◽  
Rafael Martinez ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Output Power ◽  
Lead Zirconate Titanate ◽  
Maximum Output Power ◽  
Low Frequency ◽  
Electrical Contacts ◽  
Piezoelectric Energy Harvesting ◽  
Maximum Output ◽  
Coupling Coefficients ◽  
Piezoelectric Energy

In this work is presented a study of a piezoelectric energy harvesting device used for low power consumption applications operating at relative low frequency. The structure consists of a cantilever beam made by Lead Zirconate Titanate (PZT) layer with two gold electrodes for electrical contacts. The piezoelectric material was selected taking into account its high coupling coefficients. Different structures were analyzed with variations in its dimensions and shape of the cantilever. The devices were designed to operate at the resonance frequency to get maximum electrical power output. The structures were simulated using finite element (FE) software. The analysis of the harvesting devices was performed in order to investigate the influence of the geometric parameters on the output power and the natural frequency. To validate the simulation results, an experiment with a PZT cantilever with brass substrate was carried out. The experimental data was found to be very close to simulation data. The results indicate that large structures, in the order of millimeters, are the ideal for piezoelectric energy harvesting devices providing a maximum output power in the range of mW

scholarly journals A Review on Piezoelectric Energy Harvesting: Materials, Methods, and Circuits

2019 ◽  
Vol 4 (1) ◽  
pp. 3-39 ◽  
Author(s):  
Shashank Priya ◽  
Hyun-Cheol Song ◽  
Yuan Zhou ◽  
Ronnie Varghese ◽  
Anuj Chopra ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Power Management ◽  
Energy Harvester ◽  
Piezoelectric Materials ◽  
Low Frequency ◽  
Small Scale ◽  
Piezoelectric Energy Harvesting ◽  
Wide Bandwidth ◽  
Piezoelectric Energy ◽  
Continuous Power

Abstract Piezoelectric microelectromechanical systems (PiezoMEMS) are attractive for developing next generation self-powered microsystems. PiezoMEMS promises to eliminate the costly assembly for microsensors/microsystems and provide various mechanisms for recharging the batteries, thereby, moving us closer towards batteryless wireless sensors systems and networks. In order to achieve practical implementation of this technology, a fully assembled energy harvester on the order of a quarter size dollar coin (diameter=24.26 mm, thickness=1.75 mm) should be able to generate about 100 μW continuous power from low frequency ambient vibrations (below 100 Hz). This paper reviews the state-of-the-art in microscale piezoelectric energy harvesting, summarizing key metrics such as power density and bandwidth of reported structures at low frequency input. This paper also describes the recent advancements in piezoelectric materials and resonator structures. Epitaxial growth and grain texturing of piezoelectric materials is being developed to achieve much higher energy conversion efficiency. For embedded medical systems, lead-free piezoelectric thin films are being developed and MEMS processes for these new classes of materials are being investigated. Non-linear resonating beams for wide bandwidth resonance are also reviewed as they would enable wide bandwidth and low frequency operation of energy harvesters. Particle/granule spray deposition techniques such as aerosol-deposition (AD) and granule spray in vacuum (GSV) are being matured to realize the meso-scale structures in a rapid manner. Another important element of an energy harvester is a power management circuit, which should maximize the net energy harvested. Towards this objective, it is essential for the power management circuit of a small-scale energy harvester to dissipate minimal power, and thus it requires special circuit design techniques and a simple maximum power point tracking scheme. Overall, the progress made by the research and industrial community has brought the energy harvesting technology closer to the practical applications in near future.

scholarly journals A Low-Frequency MEMS Piezoelectric Energy Harvesting System Based on Frequency Up-Conversion Mechanism

Micromachines ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 639 ◽  
Author(s):  
Manjuan Huang ◽  
Cheng Hou ◽  
Yunfei Li ◽  
Huicong Liu ◽  
Fengxia Wang ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
High Frequency ◽  
Low Frequency ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Mems Fabrication ◽  
Piezoelectric Cantilever ◽  
Energy Harvesting System ◽  
Micro Electromechanical System ◽  
The Impact

This paper proposes an impact-based micro piezoelectric energy harvesting system (PEHS) working with the frequency up-conversion mechanism. The PEHS consists of a high-frequency straight piezoelectric cantilever (SPC), a low-frequency S-shaped stainless-steel cantilever (SSC), and supporting frames. During the vibration, the frequency up-conversion behavior is realized through the impact between the bottom low-frequency cantilever and the top high-frequency cantilever. The SPC used in the system is fabricated using a new micro electromechanical system (MEMS) fabrication process for a piezoelectric thick film on silicon substrate. The output performances of the single SPC and the PEHS under different excitation accelerations are tested. In the experiment, the normalized power density of the PEHS is 0.216 μW·g−1·Hz−1·cm−3 at 0.3 g acceleration, which is 34 times higher than that of the SPC at the same acceleration level of 0.3 g. The PEHS can improve the output power under the low frequency and low acceleration scenario.

Low frequency piezoelectric energy harvesting at multi vibration mode shapes

2015 ◽  
Vol 228 ◽  
pp. 104-111 ◽  
Author(s):  
Mehdi Rezaeisaray ◽  
Mohamed El Gowini ◽  
Dan Sameoto ◽  
Don Raboud ◽  
Walied Moussa
Keyword(s):  
Energy Harvesting ◽  
Vibration Mode ◽  
Low Frequency ◽  
Mode Shapes ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy

scholarly journals Piezoelectric Energy Harvesting from Suspension Structures with Piezoelectric Layers

Sensors ◽  
2020 ◽  
Vol 20 (13) ◽  
pp. 3755 ◽  
Author(s):  
Min Wang ◽  
Yiming Xia ◽  
Huayan Pu ◽  
Yi Sun ◽  
Jiheng Ding ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Impedance Matching ◽  
Low Frequency ◽  
Single Layer ◽  
Leaf Spring ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Low Frequency Vibration ◽  
Piezoelectric Layers ◽  
Series Of Experiments

In this paper, we propose a generator for piezoelectric energy harvesting from suspension structures. This device consists of a leaf spring and eight pairs of piezoelectric layers attached to inner and outer surfaces. We present a special type of leaf spring, which can magnify the force from the workload to allow the piezoelectric layers to achieve larger deformation. The generator is to solve the problem of vibration energy reutilization in a low-frequency vibration system. To verify the efficiency of the proposed configuration, a series of experiments are operated. The results indicate that the resonance frequency (25.2 Hz) obtained from the sweep experiment is close to the simulation result (26.1 Hz). Impedance-matching experiments show that the sum of the output power attains 1.7 mW, and the maximum single layer reaches 0.6 mW with an impedance matching of 610 KΩ, and the instantaneous peak-peak power density is 3.82 mW/cm3. The capacitor-charging performance of the generator is also excellent under the series condition. For a 4.7 μF capacitor, the voltage is charged to 25 V in 30 s and limited at 32 V in 80 s. These results demonstrate the exploitable potential of piezoelectric energy harvesting from suspension structures.

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