scholarly journals Output Power of Piezoelectric MEMS Vibration Energy Harvesters Under Random Oscillation

2019 ◽  
Vol 1407 ◽  
pp. 012082
Author(s):  
S Murakami ◽  
T Yoshimura ◽  
M Aramaki ◽  
Y Kanaoka ◽  
K Tsuda ◽  
...  
Keyword(s):  
Output Power ◽  
Vibration Energy ◽  
Random Oscillation ◽  
Energy Harvesters ◽  
Piezoelectric Mems

Temperature effects on output power of piezoelectric vibration energy harvesters

2011 ◽  
Vol 42 (8) ◽  
pp. 988-991 ◽  
Author(s):  
Seon-Bae Kim ◽  
Jung-Hyun Park ◽  
Hosang Ahn ◽  
Dan Liu ◽  
Dong-Joo Kim
Keyword(s):  
Output Power ◽  
Temperature Effects ◽  
Vibration Energy ◽  
Energy Harvesters ◽  
Piezoelectric Vibration

scholarly journals Topology Selection and Parametric Design of Electromagnetic Vibration Energy Harvesters by Combining FEA-in-the-Loop and Analytical Approaches

Energies ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 627 ◽  
Author(s):  
Seong-yeol Yoo ◽  
Young-Woo Park ◽  
Myounggyu Noh
Keyword(s):  
Output Power ◽  
Permanent Magnets ◽  
Energy Harvester ◽  
Maximum Output Power ◽  
Electromagnetic Energy ◽  
Vibration Energy ◽  
Maximum Output ◽  
Primary Concern ◽  
Energy Harvesters ◽  
Analytical Approaches

Electromagnetic energy harvesters have been used to capture low-frequency vibration energy of large machines such as diesel generators. The structure of an electromagnetic energy harvester is either planar or tubular. Past research efforts focus on optimally designing each structure separately. An objective comparison between the two structures is necessary in order to decide which structure is advantageous. When comparing the structures, the design variations such as magnetization patterns and the use of yokes must also be considered. In this study, extensive comparisons are made covering all possible topologies of an electromagnetic energy harvester. A bench mark harvester is defined and the parameters that produce maximum output power are identified for each topology. It is found that the tubular harvesters generally produce larger output power than the planar counterparts. The largest output power is generated by the tubular harvester with a Halbach magnetization pattern (94.7 mW). The second best is the tubular harvester with axial magnetization pattern (79.1 mW) when moving yokes are inserted between permanent magnets for flux concentration. When cost is of primary concern, the tubular harvester with axial pattern may become a best option.

scholarly journals Electrostatic MEMS Vibration Energy Harvesters inside of Tire Treads

Sensors ◽  
2019 ◽  
Vol 19 (4) ◽  
pp. 890 ◽  
Author(s):  
Yasuyuki Naito ◽  
Keisuke Uenishi
Keyword(s):  
Output Power ◽  
High Efficiency ◽  
Vibration Energy ◽  
Sinusoidal Vibration ◽  
Vibration Energy Harvester ◽  
Energy Harvesters ◽  
Electrostatic Mems ◽  
Output Electrode ◽  
Harvest Impact ◽  
Impact Vibration

An electret electrostatic MEMS vibration energy harvester for tire sensors mounted inside of the tire tread is reported. The device was designed so as to linearly change an electrostatic capacitance between the corrugated electret and output electrode according to the displacement of the proof mass. The electromechanical linearity was effective at reducing the power loss. The output power reached 495 μW under sinusoidal vibration despite the footprint size being as small as 1 cm2. Under impact vibration inside of the tire tread, the output power reached 60 μW at a traveling speed of 60 km/h. It was revealed that a higher mechanical resonance frequency of the harvester adjusted within the frequency band of a low-power spectral density of impact vibration acceleration was effective for high efficiency harvest impact vibration energy.

Ferroelectric dipole electrets for output power enhancement in electrostatic vibration energy harvesters

2013 ◽  
Vol 103 (16) ◽  
pp. 162901 ◽  
Author(s):  
Haruhiko Asanuma ◽  
Hiroyuki Oguchi ◽  
Motoaki Hara ◽  
Ryo Yoshida ◽  
Hiroki Kuwano
Keyword(s):  
Output Power ◽  
Vibration Energy ◽  
Energy Harvesters ◽  
Power Enhancement
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