Magnetic Coupling for a 10 kW Tidal Current Turbine: Design and Small Scale Experiments

In-cheol Kim, Joji Wata, Watchara Tongphong, Jong-Su Yoon and Young-Ho Lee
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In-cheol Kim: Korea Maritime & Ocean University Research Institute of Maritime Industry, Korea Maritime and Ocean University, Busan 49112, Korea
Joji Wata: Department of Mechanical Engineering, Graduate School, Korea Maritime and Ocean University, Busan 49112, Korea
Watchara Tongphong: Department of Mechanical Engineering, Graduate School, Korea Maritime and Ocean University, Busan 49112, Korea
Jong-Su Yoon: Energy Environment Center, Busan, Korea Marine Equipment Research Institute, Busan 49112, Korea
Young-Ho Lee: Korea Division of Mechanical Engineering, Korea Maritime and Ocean University, Busan 49112, Korea

Energies, 2020, vol. 13, issue 21, 1-20

Abstract: This paper presents a coupling design that improves water tightness of a marine current turbine (MCT). The coupling is numerically analyzed and incorporated into the design of an MCT from a previous study. The performance of the MCT with the magnetic coupling is compared to the previous results in small scale turbine experiments. The results show that the new design is water tight and has lower mechanical losses when compared with previous results. The new turbine has increased maximum power output (from 116 W to 122 W) and hydrodynamic coefficient of power (Previously 0.45 to 0.46). Using these results, the coupling design is scaled for a 10 kW MCT and further analyzed by finite element analysis. The results obtained show that the magnetic coupling is capable of withstanding the combined weight of the hub and blade assembly. The results in this study will be used for developing a prototype for deployment in real seas.

Keywords: cylindrical air gap magnetic coupling; marine current turbine; counter-rotating turbine; tidal current energy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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