Characterization of a thin piezoelectric material before integration into a cantilever-based mechanical energy harvester

2016 ◽  
Author(s):  
T. Hoang ◽  
G. Ferin ◽  
B. Rosinski ◽  
C. Bantignies ◽  
H. Le Khanh ◽  
...  
Keyword(s):  
Piezoelectric Material ◽  
Energy Harvester ◽  
Mechanical Energy

Dynamic Modeling and Electrical Characterization of a Heaving Hybrid Triboelectric-Electromagnetic Energy Harvester

2018 ◽  
Author(s):  
Zia Saadatnia ◽  
Ebrahim Esmailzadeh ◽  
Hani E. Naguib
Keyword(s):  
Energy Harvester ◽  
Mechanical Energy ◽  
Electrical Characterization ◽  
Electrical Performance ◽  
System Response ◽  
Free Standing ◽  
Energy Harvesters ◽  
Output Performance ◽  
Output Characteristics

In this study the dynamic and electrical performance of a novel hybrid Electromagnetic-Triboelectric energy harvester is studied. The mechanism incorporates a linear tubular electromagnetic (EMG) transducer as well as a free-standing grating triboelectric (TENG) transducer. The heaving of the slider inside the stator triggers both EMG and TENG which results in electricity generation. The dynamic model of the system is firstly developed and the system response under external excitation is carried out. Then, the electrical output characteristics of each harvesting unit are developed based on the dynamic response. Then, the effects of various parameters such as frequency of excitation and external electrical load on the output performance of the harvester including voltage, current, and power density of the EMG and TENG units are investigated. This study provides a guideline toward the design and analysis of novel mechanical energy harvesters.

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.

Characterization of media mills based on mechanical energy applied to particles

2006 ◽  
Vol 61 (4) ◽  
pp. 1065-1073 ◽  
Author(s):  
Tomohiro Iwasaki ◽  
Jeong Hwan Kim ◽  
Munetake Satoh
Keyword(s):  
Mechanical Energy

scholarly journals Improved Interface Circuit for Enhancing the Power Output of a Vibration-Threshold-Triggered Piezoelectric Energy Harvester

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3830
Author(s):  
Jiqiang Liu ◽  
Junjie Yang ◽  
Ruofeng Han ◽  
Qisheng He ◽  
Dacheng Xu ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Piezoelectric Material ◽  
Output Power ◽  
Energy Harvester ◽  
Equivalent Circuit Model ◽  
Stage Structure ◽  
Circuit Model ◽  
Interface Circuit ◽  
Piezoelectric Energy ◽  
Vibration Threshold

The vibration-threshold-triggered piezoelectric energy harvester is a new type of piezoelectric energy harvester with a two-stage structure, which can generate electricity in a low frequency environment and recognize vibration intensity at the same time. In this study, a theoretical model of a vibration-threshold-triggered energy harvester was examined, and an equivalent circuit model of the energy harvester was obtained. Then, an interface circuit was proposed that can significantly improve the output power of the energy harvester. The interface circuit achieved impedance matching with the piezoelectric material to maximize the energy collected from the energy harvester. First, we calculated and analyzed the impedance characteristics of the energy harvester, based on the equivalent circuit model. It was found that because the piezoelectric material is in resonance as the energy harvester is in operation, the corresponding impedance is almost resistance. Therefore, a resistance-matching strategy was proposed. Last, we proposed an interface circuit with adjustable input impedance to achieve resistance matching. The experimental results show that the proposed interface circuit can increase the output power of the energy harvester by 48.1–55.7% over that achieved with the standard interface circuit.

scholarly journals Simulation, Fabrication and Characterization of Robust Vibrational Energy Harvester

2015 ◽  
Vol 120 ◽  
pp. 349-354 ◽  
Author(s):  
Surjitsinh Chauhan ◽  
Bernhard Müller ◽  
Ulrich Mescheder
Keyword(s):  
Energy Harvester ◽  
Vibrational Energy ◽  
Fabrication And Characterization
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