Experimental results from a linear wave power generator connected to a resonance circuit

2012 ◽  
Vol 2 (4) ◽  
pp. 456-464 ◽  
Author(s):  
Boel Ekergård ◽  
Cecilia Boström ◽  
Anders Hagnestål ◽  
Rafael Waters ◽  
Mats Leijon
Keyword(s):  
Experimental Results ◽  
Wave Power ◽  
Linear Wave ◽  
Power Generator ◽  
Resonance Circuit

Analysis of linear wave power generator model with real sea experimental results

2013 ◽  
Vol 7 (5) ◽  
pp. 574-581 ◽  
Author(s):  
Remya Krishna ◽  
Olle Svensson ◽  
Magnus Rahm ◽  
Sasi K. Kottayil ◽  
Rafeal Waters ◽  
...  
Keyword(s):  
Experimental Results ◽  
Wave Power ◽  
Linear Wave ◽  
Power Generator ◽  
Generator Model

Damage Assessment of Beams Using Flexural Wave Reflection Coefficients

2007 ◽  
Vol 347 ◽  
pp. 193-198 ◽  
Author(s):  
Simon P. Shone ◽  
Brian R. Mace ◽  
Tim P. Waters
Keyword(s):  
Damage Assessment ◽  
Wave Reflection ◽  
Experimental Results ◽  
Flexural Wave ◽  
Reflection Coefficients ◽  
Wave Power ◽  
Spring Model ◽  
Low Frequencies ◽  
Experimental Errors ◽  
Ill Conditioning

The wave reflection coefficients of damage such as cracks, notches and slots in otherwise uniform beams depend on frequency and on the size of the damage. Experimental results are presented for the wave power reflection coefficients of transverse slots of various depths sawn into a number of beam specimens. These results are compared with a conventional spring model to estimate the depth of the slot. The method appears to work well for larger slot depths (greater than about 30% of the thickness of the beam) and at higher frequencies, allowing their existence to be inferred and their size to be estimated. This is due to the fact that the reflection coefficients are larger in these regimes. For smaller slots or at low frequencies, noise and experimental errors, such as miscalibration errors and ill-conditioning, become more significant.

scholarly journals Study on Wave Power Generator Using Flexible Piezoelectric Device

2010 ◽  
Vol 66 (1) ◽  
pp. 1281-1285
Author(s):  
Hidemi MUTSUDA ◽  
Kenta KAWAKAMI ◽  
Masato HIRATA ◽  
Yasuaki DOI ◽  
Yoshikazu TANAKA ◽  
...  
Keyword(s):  
Wave Power ◽  
Power Generator ◽  
Piezoelectric Device

Design and Fabrication of a High Efficiency Piezoelectric Vibration-Induced Micro Power Generator

2003 ◽  
Author(s):  
Gou-Jen Wang ◽  
Ying-Hsu Lin ◽  
His-Harng Yang ◽  
Cheng-Tang Pan
Keyword(s):  
Theoretical Analysis ◽  
Energy Conversion ◽  
Experimental Results ◽  
Maximum Output ◽  
Vibration Source ◽  
Power Generator ◽  
Resonance Frequencies ◽  
Micro Power ◽  
Piezoelectric Vibration ◽  
Micro Power Generator

To fulfill the increasing self-power demanding of the embedded and remote microsystems, theoretical and experimental study of a piezoelectric vibration-induced micro power generator that can convert mechanical vibration energy into electrical energy is presented. A complete energy conversion model regarding the piezoelectric transducer is discussed first. To verify the theoretical analysis, two clusters of transducer structures are fabricated. The piezoelectric lead zirconate titanate (PZT) material that has better energy conversion efficiency among the piezoelectric materials is chosen to make of the energy conversion transducer. The desired shape of the piezoelectric generator with its resonance frequency in accordance with the ambient vibration source is designed by finite element analysis (FEA) approach. Conducting wires and load resistor are soldered on the electrodes to output and measure the vibration induced electrical power. Experimental results shows that the maximum output voltages are generated at the first mode resonance frequencies of the structure. It is also found from the experimental results that the induced voltage is irrelevant to the width of the structure but is inverse proportion to the length of the structure. It takes 7 minutes to charge a 10,000 μF capacitors array to a 7 V level. The total amount of electricity and energy stored in the capacitors are 0.7 Coulomb and 0.245 J, respectively. The experimental results are coincidence with the theoretical analysis.

Possibilities for a Novel Wave Power Generator Using Dielectric Elastomers

2020 ◽  
Author(s):  
S. Chiba ◽  
M. Waki ◽  
C. Jiang ◽  
K. Fujita
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Wave Power ◽  
Generation System ◽  
Ocean Energy ◽  
Power Generator ◽  
Energy Demands ◽  
Worldwide Population ◽  
Power Generation System ◽  
Effective Use

Abstract As industrialization, worldwide population growth, and improvements in the living standards in developing countries continue, demands for energy, food, and water, likewise surge. This in turn accelerates global warming, and its resultant extreme weather effects. Among the measures proposed to meet the growing energy demands, the use of renewable energy is gaining more and more attention. In particular, wave power generation is attracting a great deal of attention as an effective use of ocean energy. However, current wave generators are large and very expensive relative to their output. Furthermore, they cannot generate power efficiently with wave directivity, small amplitude waves and so on. For these reasons, widespread use is very limited. In order to solve these problems, this paper discusses the possibility of a recently developed wave power generator that uses a newly developed dielectric elastomer (DE) as a new way to harvest renewable energy. We also discuss the technical breakthrough of building a mega power generation system using DEs.

A Multi-Mode Vibration-Based Power Generator for Vehicles

2012 ◽  
Vol 251 ◽  
pp. 124-128
Author(s):  
Seiji Hashimoto ◽  
Nobuyuki Nagai ◽  
Yoshimitsu Fujikura ◽  
Jyunpei Takahashi ◽  
Shunji Kumagai ◽  
...  
Keyword(s):  
Power Generation ◽  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Experimental Results ◽  
Power Generator ◽  
Effective Power ◽  
New Device ◽  
Mode Vibration ◽  
Power Generation Device ◽  
Multi Mode

This paper presents a novel vibration power generation device for vehicles where effective power generation can be obtained by multi-mode vibration of the vehicles. First, road tests of the vehicle are performed, and then the obtained data is analyzed. Next, a vibration power generation device specially designed for the vehicle is proposed. This new device is composed of the multiple masses and spring plates equipped with lead zirconate titanate (PZT), and is effective in multi-mode vibration. The validity of the developed device is confirmed by the simulation and experimental results.

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