scholarly journals Structural optimisation through material selections for multi-cantilevered vibration electromagnetic energy harvesters

2022 ◽  
Vol 162 ◽  
pp. 108044
Author(s):  
Faruq Muhammad Foong ◽  
Chung Ket Thein ◽  
Daniil Yurchenko
Keyword(s):  
Electromagnetic Energy ◽  
Structural Optimisation ◽  
Energy Harvesters

On Modeling of Springless Electromagnetic Energy Harvesters

2020 ◽  
pp. 151-159
Author(s):  
Ramy A. Mohamed ◽  
Ayman El-Badawy ◽  
Ahmed Moustafa ◽  
Andrew Kirolos ◽  
Mostafa Soliman ◽  
...  
Keyword(s):  
Electromagnetic Energy ◽  
Energy Harvesters

scholarly journals Adaptive Electromagnetic Energy Harvester for Mobile Devices

2020 ◽  
Author(s):  
Haziq Kamal ◽  
Peyman Moghadam
Keyword(s):  
Resonant Frequency ◽  
Mobile Devices ◽  
Energy Harvester ◽  
Excitation Frequency ◽  
Electromagnetic Energy ◽  
Major Drawback ◽  
Energy Harvesters ◽  
Limited Effectiveness ◽  
Energy Harvesting Devices ◽  
Ambient Excitation

<div>Advances in design and development of light-weight and low power wearable and mobile devices open up the possibility of lifetime extension of these devices from ambient sources through energy harvesting devices as opposed to periodically recharge the batteries. The most commonly available ambient energy source for mobile devices is Kinetic energy harvesters (KEH). The major drawback of the energy harvesters is limited effectiveness of harvesting mechanism near a fixed resonant frequency. It is difficult to harvest a reliable amount of energy from every forms of device motions with different excitation frequencies. To overcome this drawback, in this paper we propose an adaptive electromagnetic energy harvester which utilises spring characteristics to adapt its resonant frequency to match the ambient excitation frequency. This paper presents a prototype design and analysis of an adaptive electromagnetic energy harvester both in simulation and real. The harvester has tested using a specially designed experimental setup and compared with numerical simulations. The proposed solution generates 3.5 times higher maximum power over the default power output and 2.4 times higher maximum frequency compared to a fixed resonant frequency electromagnetic energy harvester.</div>

Optimization of AA-Battery Sized Electromagnetic Energy Harvesters: Reducing the Resonance Frequency Using a Non-Magnetic Inertial Mass

2018 ◽  
Vol 18 (11) ◽  
pp. 4509-4516 ◽  
Author(s):  
Oguz Yasar ◽  
Hasan Ulusan ◽  
Ozge Zorlu ◽  
Ozlem Sardan-Sukas ◽  
Haluk Kulah
Keyword(s):  
Resonance Frequency ◽  
Inertial Mass ◽  
Electromagnetic Energy ◽  
Energy Harvesters
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