A review on energy harvesting from ocean waves by piezoelectric technology

2017 ◽  
Vol 1 (2) ◽  
Author(s):  
N. V Viet ◽  
N Wu ◽  
Q Wang
Keyword(s):  
Power Generation ◽  
Energy Conversion ◽  
Piezoelectric Materials ◽  
Ocean Waves ◽  
Transmission Efficiency ◽  
Economic Costs ◽  
Research Directions ◽  
Piezoelectric Energy ◽  
Piezoelectric Effects ◽  
Longitudinal Bending

AbstractPiezoelectric materials have been widely used to harvest energy from ocean waves. This review is to introduce and review the development of the technologies. First, from comparison of the three major energy conversion techniques namely electrostatic, electromagnetic and piezoelectric technologies, in terms of power generation capability, transmission efficiency, and structural installation and economic costs, the advantages of applying piezoelectric energy conversion technology are identified. Second, the review sums up different methodologies and designs of harvesting energy from ocean waves based on different piezoelectric effects. In particular, the designs and efficiencies of available harvesters based on the piezoelectric effects from longitudinal, bending, and shear couplings are introduced and discussed. Finally, the futuristic research directions and methods for improving the efficiencies of the piezoelectric harvesters are discussed profoundly in this area.

scholarly journals WAVE ENERGY CONVERSION AN EMERGING MODE OF RENEWABLE AND SUSTAINABLE POWER GENERATION

2013 ◽  
pp. 78-84
Author(s):  
DIGVIJAY SINGH RAGHUVANSHI ◽  
JAYESH L. MINASE
Keyword(s):  
Power Generation ◽  
Energy Conversion ◽  
Wave Energy ◽  
Ocean Waves ◽  
Future Research ◽  
Extensive Literature ◽  
Wave Energy Conversion ◽  
Power Requirement ◽  
Wave Energy Converters ◽  
Set Up

Ocean waves, if employed efficiently for generation of electricity, could result in the most economic green process (minimal carbon emission). This paper, based on the extensive literature survey conducted as a part of a B.Tech Project provides an overview of the current scenario of power generation and consumption in India thereby emphasizing on the progressively increasing power requirement and a lagging behind share of renewable energy. A scientific clarity is drawn on the basic theory behind wave generation and the key factors for assessing and deploying wave energy converters. Further, a few successful wave energy conversion techniques are discussed briefly, which posses the potential scope of future research and development and are presently employed under pre-commercial and commercial stages around the globe. A special emphasis is laid on the point absorber section which has been the area of research for the authors‘ project thereby detailing its constructional and working aspects and also discussing briefly an experimental procedure to set up a wave generator, to calculate mechanical conversion efficiency, and its scope of applicability. The conclusion is drawn in favor of the coastal communities which still rely on costly diesel for generating electricity.

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

Energies ◽  
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.

scholarly journals A Phononic Crystal with Differently Configured Double Defects for Broadband Elastic Wave Energy Localization and Harvesting

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 643
Author(s):  
Soo-Ho Jo ◽  
Byeng D. Youn
Keyword(s):  
Elastic Wave ◽  
Wave Energy ◽  
Phononic Crystal ◽  
Square Lattice ◽  
Energy Localization ◽  
Piezoelectric Patch ◽  
Single Defect ◽  
Piezoelectric Energy ◽  
Piezoelectric Effects ◽  
Elastic Wave Energy

Several previous studies have been dedicated to incorporating double defect modes of a phononic crystal (PnC) into piezoelectric energy harvesting (PEH) systems to broaden the bandwidth. However, these prior studies are limited to examining an identical configuration of the double defects. Therefore, this paper aims to propose a new design concept for PnCs that examines differently configured double defects for broadband elastic wave energy localization and harvesting. For example, a square-pillar-type unit cell is considered and a defect is considered to be a structure where one piezoelectric patch is bonded to a host square lattice in the absence of a pillar. When the double defects introduced in a PnC are sufficiently distant from each other to implement decoupling behaviors, each defect oscillates like a single independent defect. Here, by differentiating the geometric dimensions of two piezoelectric patches, the defects’ dissimilar equivalent inertia and stiffness contribute to individually manipulating defect bands that correspond to each defect. Hence, with adequately designed piezoelectric patches that consider both the piezoelectric effects on shift patterns of defect bands and the characteristics for the output electric power obtained from a single-defect case, we can successfully localize and harvest the elastic wave energy transferred in broadband frequencies.

Metal-like electrical conductivity in LaxSr2−xTiMoO6 oxides for high temperature thermoelectric power generation

2017 ◽  
Vol 46 (18) ◽  
pp. 5872-5879 ◽  
Author(s):  
Mandvi Saxena ◽  
Tanmoy Maiti
Keyword(s):  
Power Generation ◽  
Electrical Conductivity ◽  
High Temperature ◽  
Energy Conversion ◽  
Thermoelectric Power ◽  
Conversion Efficiency ◽  
Energy Conversion Efficiency ◽  
Power Generators ◽  
Thermoelectric Power Generation

Increasing electrical conductivity in oxides, which are inherently insulators, can be a potential route in developing oxide-based thermoelectric power generators with higher energy conversion efficiency.

scholarly journals Modeling of Piezoelectric Energy Harvesting from Freely Oscillating Cylinders in Water Flow

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Min Zhang ◽  
YingZheng Liu ◽  
ZhaoMin Cao
Keyword(s):  
Energy Harvesting ◽  
Free Stream ◽  
Piezoelectric Materials ◽  
Load Resistance ◽  
Stream Velocity ◽  
Piezoelectric Energy Harvesting ◽  
Vibratory System ◽  
System Parameters ◽  
Piezoelectric Energy ◽  
Vortex Induced Vibrations

A concept of energy harvesting from vortex-induced vibrations of a rigid circular cylinder with two piezoelectric beams attached is investigated. The variations of the power levels with the free stream velocity are determined. A mathematical approach including the coupled cylinder motion and harvested voltage is presented. The effects of the load resistance, piezoelectric materials, and circuit combined on the natural frequency and damping of the vibratory system are determined by performing a linear analysis. The dynamic response of the cylinder and harvested energy are investigated. The results show that the harvested level in SS and SP&PS modes is the same with different values of load resistance. For four different system parameters, the results show that the bigger size of cylinder with PZT beams can obtain the higher harvested power.

Design of a piezoelectric energy conversion based wind generator

2021 ◽  
pp. 002072092110134
Author(s):  
Sibel Akkaya Oy ◽  
Ali Ekber Özdemir
Keyword(s):  
Low Power ◽  
Energy Conversion ◽  
Output Voltage ◽  
Sensor Nodes ◽  
Maximum Output ◽  
Wireless Sensor Nodes ◽  
Wind Speeds ◽  
Wind Generator ◽  
Piezoelectric Energy ◽  
Renewable Energy Generation

This manuscript presents a new experimental wind generator based on piezoelectric energy conversion for low power applications. The aim is to demonstrate an alternative renewable energy generation method for low power applications. The generator has four blades of a propeller equipped with a total of twenty-four (24) thin film piezoelectric transducers (TFPTs). The output voltage is generated using a newly developed circuit topology. The generator was tested at three wind speeds 10 m/s, 14 m/s and 18 m/s, with a maximum output voltage of 10.2 V being produced at a wind speed of 18 m/s. Results show that this generator has promise to be suitable for low power batteryless applications, for example wireless sensor nodes (WSN).

Optimization of spiral-shaped piezoelectric energy harvester using Taguchi method

2017 ◽  
Vol 24 (19) ◽  
pp. 4484-4491 ◽  
Author(s):  
R Tikani ◽  
L Torfenezhad ◽  
M Mousavi ◽  
S Ziaei-Rad
Keyword(s):  
Taguchi Method ◽  
Energy Harvester ◽  
Piezoelectric Materials ◽  
Mechanical Energy ◽  
Experimental Investigations ◽  
Optimum Level ◽  
Low Frequencies ◽  
Piezoelectric Energy ◽  
Resonance Frequencies ◽  
Design Values

Nowadays, environmental energy resources, especially mechanical vibrations, have attracted the attention of researchers to provide energy for low-power electronic circuits. A common method for environmental mechanical energy harvesting involves using piezoelectric materials. In this study, a spiral multimode piezoelectric energy harvester was designed and fabricated. To achieve wide bandwidth in low frequencies (below 15 Hz), the first three resonance frequencies of the beam were designed to be close to each other. To do this, the five lengths of the substrate layer were optimized by the Taguchi method, using an L27 orthogonal array. Each experiment of the Taguchi method was then simulated in ANSYS software. Next, the optimum level of each design variable was obtained. A test rig was then constructed based on the optimum design values and some experimental investigations were conducted. A good correlation was observed between measured and the finite element results.

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