scholarly journals Modeling and Optimization of a Vortex Induced Vibration Fluid Kinetic Energy Harvester

2014 ◽  
Vol 87 ◽  
pp. 779-782 ◽  
Author(s):  
Quan Wen ◽  
Robert Schulze ◽  
Detlef Billep ◽  
Thomas Otto ◽  
Thomas Gessner
Keyword(s):  
Kinetic Energy ◽  
Energy Harvester ◽  
Vortex Induced Vibration ◽  
Modeling And Optimization

scholarly journals Double-Deck Metal Solenoids 3D Integrated in Silicon Wafer for Kinetic Energy Harvester

Micromachines ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 74
Author(s):  
Nianying Wang ◽  
Ruofeng Han ◽  
Changnan Chen ◽  
Jiebin Gu ◽  
Xinxin Li
Keyword(s):  
Kinetic Energy ◽  
Power Density ◽  
Energy Harvester ◽  
High Efficiency ◽  
Vibrational Energy ◽  
Average Power ◽  
Wafer Level ◽  
Peak Voltage ◽  
Silicon Mold ◽  
Casting Technique

A silicon-chip based double-deck three-dimensional (3D) solenoidal electromagnetic (EM) kinetic energy harvester is developed to convert low-frequency (<100 Hz) vibrational energy into electricity with high efficiency. With wafer-level micro electro mechanical systems (MEMS) fabrication to form a metal casting mold and the following casting technique to rapidly (within minutes) fill molten ZnAl alloy into the pre-micromachined silicon mold, the 300-turn solenoid coils (150 turns for either inner solenoid or outer solenoid) are fabricated in silicon wafers for saw dicing into chips. A cylindrical permanent magnet is inserted into a pre-etched channel for sliding upon external vibration, which is surrounded by the solenoids. The size of the harvester chip is as small as 10.58 mm × 2.06 mm × 2.55 mm. The internal resistance of the solenoids is about 17.9 Ω. The maximum peak-to-peak voltage and average power output are measured as 120.4 mV and 43.7 μW. The EM energy harvester shows great improvement in power density, which is 786 μW/cm3 and the normalized power density is 98.3 μW/cm3/g. The EM energy harvester is verified by experiment to be able to generate electricity through various human body movements of walking, running and jumping. The wafer-level fabricated chip-style solenoidal EM harvesters are advantageous in uniform performance, small size and volume applications.

Multi-Stable Magnetic Spring-Based Energy Harvester Subject to Harmonic Excitation: Comparative Study and Experimental Evaluation

2018 ◽  
Author(s):  
Hieu Nguyen ◽  
Hamzeh Bardaweel
Keyword(s):  
Energy Harvesting ◽  
Kinetic Energy ◽  
Comparative Study ◽  
Experimental Evaluation ◽  
Chaotic Motion ◽  
Energy Harvester ◽  
Electric Energy ◽  
Harmonic Excitation ◽  
Jump Frequency ◽  
Piezoelectric Elements

The work presented here investigates a unique design platform for multi-stable energy harvesting using only interaction between magnets. A solid cylindrical magnet is levitated between two stationary magnets. Peripheral magnets are positioned around the casing of the energy harvester to create multiple stable positions. Upon external vibration, kinetic energy is converted into electric energy that is extracted using a coil wrapped around the casing of the harvester. A prototype of the multi-stable energy harvester is fabricated. Monostable and bistable configurations are demonstrated and fully characterized in static and dynamic modes. Compared to traditional multi-stable designs the harvester introduced in this work is compact, occupies less volume, and does not require complex circuitry normally needed for multi-stable harvesters involving piezoelectric elements. At 2.5g [m/s2], results from experiment show that the bistable harvester does not outperform the monostable harvester. At this level of acceleration, the bistable harvester exhibits intrawell motion away from jump frequency. Chaotic motion is observed in the bistable harvester when excited close to jump frequency. Interwell motion that yields high displacement amplitudes and velocities is absent at this acceleration.

A novel kinetic energy harvester using vibration rectification mechanism for self-powered applications in railway

2021 ◽  
Vol 228 ◽  
pp. 113720
Author(s):  
Xiaoping Wu ◽  
Lingfei Qi ◽  
Tingsheng Zhang ◽  
Zutao Zhang ◽  
Yanping Yuan ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Energy Harvester ◽  
Self Powered

Hydrokinetic Vortex Induced Vibration (VIV) Energy Harvester

2021 ◽  
Author(s):  
Xiaoyu Zhou ◽  
Vesselina Roussinova ◽  
Vesselin Stoilov
Keyword(s):  
Energy Harvester ◽  
Vortex Induced Vibration

A study on piezoelectric energy harvester using kinetic energy of ocean

2018 ◽  
Vol 32 (10) ◽  
pp. 4747-4755 ◽  
Author(s):  
Yeong-min Na ◽  
Hyun-seok Lee ◽  
Jong-kyu Park
Keyword(s):  
Kinetic Energy ◽  
Energy Harvester ◽  
Piezoelectric Energy

An Impact-Coupled MEMS Electrostatic Kinetic Energy Harvester and Its Predictive Model Taking Nonlinear Air Damping Effect Into Account

2018 ◽  
Vol 27 (6) ◽  
pp. 1041-1053 ◽  
Author(s):  
Yingxian Lu ◽  
Jerome Juillard ◽  
Francesco Cottone ◽  
Dimitri Galayko ◽  
Philippe Basset
Keyword(s):  
Kinetic Energy ◽  
Predictive Model ◽  
Energy Harvester ◽  
Damping Effect ◽  
Air Damping

scholarly journals A Non-Resonant Kinetic Energy Harvester for Bioimplantable Applications

Micromachines ◽  
2018 ◽  
Vol 9 (5) ◽  
pp. 217 ◽  
Author(s):  
Mustafa Beyaz ◽  
Hacene Baelhadj ◽  
Sahar Habibiabad ◽  
Shyam Adhikari ◽  
Hossein Davoodi ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Energy Harvester
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