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A platform for research: civil engineering, architecture and urbanism
An octo-generator for energy harvesting based on the piezoelectric effect
HighlightsEnergy harvesting based on the piezoelectric effect from ocean tidal current and wind using resonance and the force magnification device is presented.An optimal and practical design of an efficient energy harvester is proposed.A corresponding mathematical model is developed to describe the mechanism of the energy harvesting process.A high electric power up to 5kW generated by the proposed harvester is achieved.
AbstractA renewable energy harvester using the piezoelectric effect is developed for the ocean tidal and wind flow. The harvester is made of connected driving blades to an octo-generator, which has a rotator with n blades and a stator attached by eight mass-spring-piston-cylinder-piezoelectricity devices. The resonance and force magnification are utilized to increase the power output of the harvester. A corresponding mathematical model is developed to calculate the root mean square of the generated electric power. The simulation results indicate that the generated power is largely enhanced when the near-resonant condition is established. The power increases with increases in the magnetic flux density, the large-to-small diameter ratio of the cylinder, the size of magnetic bar face, and decreases in the gap between two magnetic faces and the size of the piezoelectric bar face. A generated power of 5kW is realized by the harvester working under an ocean tidal speed, V=1.75m/s, and its geometric and material properties of driving length L=7.5m, spring constant kv=65000N/m, gap between the two magnets s=0.0015m, large to small diameter ratio of the cylinder z=6, and magnetic flux density Br=1.45T.
An octo-generator for energy harvesting based on the piezoelectric effect
HighlightsEnergy harvesting based on the piezoelectric effect from ocean tidal current and wind using resonance and the force magnification device is presented.An optimal and practical design of an efficient energy harvester is proposed.A corresponding mathematical model is developed to describe the mechanism of the energy harvesting process.A high electric power up to 5kW generated by the proposed harvester is achieved.
AbstractA renewable energy harvester using the piezoelectric effect is developed for the ocean tidal and wind flow. The harvester is made of connected driving blades to an octo-generator, which has a rotator with n blades and a stator attached by eight mass-spring-piston-cylinder-piezoelectricity devices. The resonance and force magnification are utilized to increase the power output of the harvester. A corresponding mathematical model is developed to calculate the root mean square of the generated electric power. The simulation results indicate that the generated power is largely enhanced when the near-resonant condition is established. The power increases with increases in the magnetic flux density, the large-to-small diameter ratio of the cylinder, the size of magnetic bar face, and decreases in the gap between two magnetic faces and the size of the piezoelectric bar face. A generated power of 5kW is realized by the harvester working under an ocean tidal speed, V=1.75m/s, and its geometric and material properties of driving length L=7.5m, spring constant kv=65000N/m, gap between the two magnets s=0.0015m, large to small diameter ratio of the cylinder z=6, and magnetic flux density Br=1.45T.
An octo-generator for energy harvesting based on the piezoelectric effect
Viet, N.V. (author) / Al-Qutayri, M. (author) / Liew, K.M. (author) / Wang, Q. (author)
Applied Ocean Research ; 64 ; 128-134
2017-02-19
7 pages
Article (Journal)
Electronic Resource
English
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