Compact Low-Velocity Ocean Current Energy Harvester Using Magnetic Couplings for Long-Term Scientific Seafloor Observation
1
State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China
2
School of Ocean and Earth Science, Tongji University, Shanghai 200092, China
3
Center for Marine Science and Technology, Tongji University, Shanghai 200092, China
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2020, 8(6), 410; https://doi.org/10.3390/jmse8060410
Received: 17 May 2020 / Revised: 28 May 2020 / Accepted: 2 June 2020 / Published: 5 June 2020
(This article belongs to the Section Ocean Engineering)
A compact low-velocity ocean current energy harvester (LOCH) is developed to power undersea instrument platforms for long-term scientific seafloor observation. Noncontact magnetic couplings are used in the LOCH to eliminate friction and achieve reliable underwater sealing so that the LOCH can adapt the low-velocity ocean current and its energy transmission efficiency can be improved. The parameters of the magnetic couplings are optimized by the three-dimensional finite-element method (3D FEM). A laboratory experiment platform is designed; and the static and dynamic performances of the magnetic couplings with different parameters are tested. The experiment results are compared with computer simulations to verify the optimal parameter design. Finally; a prototype of the LOCH is designed and its underwater experiment proves that it can start smoothly and work stably at a current velocity of as low as 0.4 m/s
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Keywords:
energy harvester; low-velocity ocean current; magnetic couplings; scientific seafloor observation; three-dimension finite-element method
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MDPI and ACS Style
Huang, L.; Lyu, F. Compact Low-Velocity Ocean Current Energy Harvester Using Magnetic Couplings for Long-Term Scientific Seafloor Observation. J. Mar. Sci. Eng. 2020, 8, 410. https://doi.org/10.3390/jmse8060410
AMA Style
Huang L, Lyu F. Compact Low-Velocity Ocean Current Energy Harvester Using Magnetic Couplings for Long-Term Scientific Seafloor Observation. Journal of Marine Science and Engineering. 2020; 8(6):410. https://doi.org/10.3390/jmse8060410
Chicago/Turabian StyleHuang, Longxiang; Lyu, Feng. 2020. "Compact Low-Velocity Ocean Current Energy Harvester Using Magnetic Couplings for Long-Term Scientific Seafloor Observation" J. Mar. Sci. Eng. 8, no. 6: 410. https://doi.org/10.3390/jmse8060410
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