Polymer Based Piezoelectric Energy Microgenerator

The goal of this paper is to review current methods of energy harvesting, while focusing on piezoelectric energy harvesting. The piezoelectric energy harvesting technique is based on the materials’ property of generating an electric field when a mechanical force is applied. This phenomenon is known as the direct piezoelectric effect. Piezoelectric transducers can be of different shapes and materials, making them suitable for a multitude of applications. To optimize the use of piezoelectric devices in applications, a model is needed to observe the behavior in the time and frequency domain. In addition to different aspects of piezoelectric modeling, this paper also presents several circuits used to maximize the energy harvested.

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Low-Cost Integrable Tuning-Free Converter for Piezoelectric Energy Harvesting Optimization

IEEE Transactions on Power Electronics ◽

10.1109/tpel.2010.2042462 ◽

2010 ◽

Vol 25 (7) ◽

pp. 1811-1819 ◽

Cited By ~ 16

Author(s):

Mickaël Lallart ◽

Daniel J Inman

Keyword(s):

Energy Harvesting ◽

Low Cost ◽

Piezoelectric Energy Harvesting ◽

Piezoelectric Energy

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Piezoelectric energy harvesting via thin annular sectorial plates: an analytical approach

Archive of Applied Mechanics ◽

10.1007/s00419-021-01971-9 ◽

2021 ◽

Author(s):

Moein Rahmani Naeim Abadi ◽

Ali Reza Saidi ◽

Mohammad Amin Askari Farsangi

Keyword(s):

Energy Harvesting ◽

Analytical Approach ◽

Piezoelectric Energy Harvesting ◽

Piezoelectric Energy

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A Multi-Mode Broadband Vibration Energy Harvester Composed of Symmetrically Distributed U-Shaped Cantilever Beams

Micromachines ◽

10.3390/mi12020203 ◽

2021 ◽

Vol 12 (2) ◽

pp. 203

Author(s):

Xiaohua Huang ◽

Cheng Zhang ◽

Keren Dai

Keyword(s):

Energy Harvester ◽

Low Frequency ◽

Experimental Results ◽

Vibration Energy ◽

Cantilever Beams ◽

Resonant Frequencies ◽

Promising Alternative ◽

Piezoelectric Energy ◽

Straight Beam ◽

Resonance Frequencies

Using the piezoelectric effect to harvest energy from surrounding vibrations is a promising alternative solution for powering small electronic devices such as wireless sensors and portable devices. A conventional piezoelectric energy harvester (PEH) can only efficiently collect energy within a small range around the resonance frequency. To realize broadband vibration energy harvesting, the idea of multiple-degrees-of-freedom (DOF) PEH to realize multiple resonant frequencies within a certain range has been recently proposed and some preliminary research has validated its feasibility. Therefore, this paper proposed a multi-DOF wideband PEH based on the frequency interval shortening mechanism to realize five resonance frequencies close enough to each other. The PEH consists of five tip masses, two U-shaped cantilever beams and a straight beam, and tuning of the resonance frequencies is realized by specific parameter design. The electrical characteristics of the PEH are analyzed by simulation and experiment, validating that the PEH can effectively expand the operating bandwidth and collect vibration energy in the low frequency. Experimental results show that the PEH has five low-frequency resonant frequencies, which are 13, 15, 18, 21 and 24 Hz; under the action of 0.5 g acceleration, the maximum output power is 52.2, 49.4, 61.3, 39.2 and 32.1 μW, respectively. In view of the difference between the simulation and the experimental results, this paper conducted an error analysis and revealed that the material parameters and parasitic capacitance are important factors that affect the simulation results. Based on the analysis, the simulation is improved for better agreement with experiments.

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Power-Generation Optimization Based on Piezoelectric Ceramic Deformation for Energy Harvesting Application with Renewable Energy

Energies ◽

10.3390/en14082171 ◽

2021 ◽

Vol 14 (8) ◽

pp. 2171

Author(s):

Hyeonsu Han ◽

Junghyuk Ko

Keyword(s):

Power Generation ◽

Renewable Energy ◽

Energy Harvesting ◽

Piezoelectric Material ◽

Lead Zirconate Titanate ◽

Piezoelectric Ceramic ◽

Piezoelectric Element ◽

Piezoelectric Ceramics ◽

Lead Zirconate ◽

Piezoelectric Energy

Along with the increase in renewable energy, research on energy harvesting combined with piezoelectric energy is being conducted. However, it is difficult to predict the power generation of combined harvesting because there is no data on the power generation by a single piezoelectric material. Before predicting the corresponding power generation and efficiency, it is necessary to quantify the power generation by a single piezoelectric material alone. In this study, the generated power is measured based on three parameters (size of the piezoelectric ceramic, depth of compression, and speed of compression) that contribute to the deformation of a single PZT (Lead zirconate titanate)-based piezoelectric element. The generated power was analyzed by comparing with the corresponding parameters. The analysis results are as follows: (i) considering the difference between the size of the piezoelectric ceramic and the generated power, 20 mm was the most efficient piezoelectric ceramic size, (ii) considering the case of piezoelectric ceramics sized 14 mm, the generated power continued to increase with the increase in the compression depth of the piezoelectric ceramic, and (iii) For piezoelectric ceramics of all diameters, the longer the depth of deformation, the shorter the frequency, and depending on the depth of deformation, there is a specific frequency at which the charging power is maximum. Based on the findings of this study, PZT-based elements can be applied to cases that receive indirect force, including vibration energy and wave energy. In addition, the power generation of a PZT-based element can be predicted, and efficient conditions can be set for maximum power generation.

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