Experiments on the magnetic coupling in a small scale counter rotating marine current turbine

I. C. Kim, N. J. Lee, J. Wata, B. S. Hyun, Y. H. Lee

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)


Modern economies are dependent on energy consumption to ensure growth or sustainable development. Renewable energy sources provide a source of energy that can provide energy security and is renewable. Tidal energy is more predictable than other sources or renewable energy like the sun or wind. Horizontal axis marine current turbines are currently the most advanced and commercially feasible option for tidal current convertors. A dual rotor turbine is theoretically able to produce more power than a single rotor turbine at the same fluid velocity. Previous experiments for a counter rotating dual rotor horizontal axis marine current turbine used a mechanical oil seal coupling that caused mechanical losses when water entered through small gaps at the shaft. A new magnetic coupling assembly eliminates the need for a shaft to connect physically with the internal mechanisms and is water tight. This reduces mechanical losses in the system and the effect on the dual rotor performance is presented in this paper.

Original languageEnglish
Article number012047
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 2016 May 19
Externally publishedYes
Event7th International Conference on Pumps and Fans with Compressors and Wind Turbines, ICPF 2015 - Hangzhou, China
Duration: 2015 Oct 182015 Oct 21

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)


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