Design and characterization of a low frequency 2-dimensional magnetic levitation kinetic energy harvester

2015 ◽  
Vol 236 ◽  
pp. 1-10 ◽  
Author(s):  
Manuel Gutierrez ◽  
Amir Shahidi ◽  
David Berdy ◽  
Dimitrios Peroulis
Keyword(s):  
Kinetic Energy ◽  
Energy Harvester ◽  
Magnetic Levitation ◽  
Low Frequency

Optimizing the Electrical Power in an Energy Harvesting System

2015 ◽  
Vol 25 (12) ◽  
pp. 1550171 ◽  
Author(s):  
Mattia Coccolo ◽  
Grzegorz Litak ◽  
Jesús M. Seoane ◽  
Miguel A. F. Sanjuán
Keyword(s):  
Energy Harvesting ◽  
Kinetic Energy ◽  
High Frequency ◽  
Energy Harvester ◽  
Electrical Power ◽  
Low Frequency ◽  
Electrical Energy ◽  
Resonance Phenomenon ◽  
Vibrational Resonance ◽  
Energy Harvesting System

In this paper, we study the vibrational resonance (VR) phenomenon as a useful mechanism for energy harvesting purposes. A system, driven by a low frequency and a high frequency forcing, can give birth to the vibrational resonance phenomenon, when the two forcing amplitudes resonate and a maximum in amplitude is reached. We apply this idea to a bistable oscillator that can convert environmental kinetic energy into electrical energy, that is, an energy harvester. Normally, the VR phenomenon is studied in terms of the forcing amplitudes or of the frequencies, that are not always easy to adjust and change. Here, we study the VR generated by tuning another parameter that is possible to manipulate when the forcing values depend on the environmental conditions. We have investigated the dependence of the maximum response due to the VR for small and large variations in the forcing amplitudes and frequencies. Besides, we have plotted color coded figures in the space of the two forcing amplitudes, in which it is possible to appreciate different patterns in the electrical power generated by the system. These patterns provide useful information on the forcing amplitudes in order to produce the optimal electrical power.

Piezoelectric energy harvester converting strain energy into kinetic energy for extremely low frequency operation

2014 ◽  
Vol 104 (11) ◽  
pp. 113904 ◽  
Author(s):  
Dae-Sung Kwon ◽  
Hee-Jin Ko ◽  
Min-Ook Kim ◽  
Yongkeun Oh ◽  
Jaesam Sim ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Strain Energy ◽  
Energy Harvester ◽  
Low Frequency ◽  
Extremely Low Frequency ◽  
Piezoelectric Energy

An Experimental Study of Low-Frequency Vibration-Based Electromagnetic Energy Harvesters Used while Walking

2014 ◽  
Vol 918 ◽  
pp. 106-114 ◽  
Author(s):  
Min Chie Chiu ◽  
Ying Chun Chang ◽  
Long Jyi Yeh ◽  
Chiu Hung Chung ◽  
Chen Hsin Chu
Keyword(s):  
Kinetic Energy ◽  
Energy Harvester ◽  
Electrical Power ◽  
Research Work ◽  
Low Frequency ◽  
Electrical Energy ◽  
Electromagnetic Energy ◽  
Electromagnetic System ◽  
Energy Harvesters ◽  
Low Frequency Vibration

The goal of this paper is to develop and experimentally test portable vibration-based electromagnetic energy harvesters which are fit for extracting low frequency kinetic energy. Based on a previous study on fixed vibration-based electromagnetic energy harvesters, three kinds of portable energy harvesters (prototype I, prototype II, and prototype III) are developed and tested. To obtain the related parameters of the energy harvesters, an experimental platform used to measure the vibrational systems electrical power at the resonant frequency and other fixed frequencies is also established. Based on the research work of vibration theory, a low frequency vibration-arm mechanism (prototype III) which is easily in resonance with a walking tempo is developed. Here, a strong magnet fixed to one side of the vibration-arm along with a set of wires placed along the vibrating path will generate electricity. The circular device has a radius of 180 mm, a width of 50 mm, and weighs 200 grams. Because of its light mass, it is easy to carry and put into a backpack. Experimental results reveal that the energy harvester (prototype III) can easily transform kinetic energy into electrical power via the vibration-based electromagnetic system when walking at a normal speed. Consequently, electrical energy reaching 0.25 W is generated from the energy harvester (prototype III) by extracting kinetic energy produced by walking.

Characterization of Different Piezoelectric Profile for Energy Harvester

2015 ◽  
Vol 793 ◽  
pp. 407-411 ◽  
Author(s):  
Afifah Shuhada Rosmi ◽  
Syed Idris Syed Hasan ◽  
Y. Wahab ◽  
Mazlee Mazalan
Keyword(s):  
Energy Harvester ◽  
Electrical Power ◽  
Maximum Output Power ◽  
Mechanical Vibration ◽  
Electrical Potential ◽  
Low Frequency ◽  
Maximum Output ◽  
Excellent Performance ◽  
Microelectromechanical System

Microelectromechanical system (MEMS) piezoelectric transducer has been widely used as a mechanism for converting mechanical vibration into electrical power energy harvester.This paper presents a simulation result of cantilever-type piezoelectric MEMS generator with four different profiles to characterize the ability in producing a maximum output power at low frequency ambient vibration.Zinc Oxide is chosen as the piezoelectric material during the simulation. The simulation was conducted using IntelliSense’s CAE tool to obtain the natural frequency, electrical potential, and the optimum length dimension for each profile. The simulation result shows an excellent performance from trapezoidal shapetransducer with the electrical potential of 0.914 V at low frequency of 79.92 Hz.

Architecture and Optimization of a Low-Frequency Maglev Energy Harvester

2019 ◽  
Vol 19 (08) ◽  
pp. 1950097 ◽  
Author(s):  
Krzysztof Kecik
Keyword(s):  
Nonlinear Model ◽  
Electromechanical Coupling ◽  
Energy Harvester ◽  
Magnetic Levitation ◽  
Low Frequency ◽  
Load Resistance ◽  
Design Analysis ◽  
Magnetic Suspension ◽  
Suspension Stiffness ◽  
Magnet Coil

Low-frequency harvesters are attractive due to their availability in the ambient environment. The paper presents the design, analysis and optimization of the magnetic levitation harvester. A new nonlinear model of the electromechanical coupling, depending on the magnet position versus coil is proposed. Additionally, the influence of magnetic suspension (stiffness), load resistance and magnet-coil configuration on the foldover effect is shown.

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