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    Chapter Tidal Turbine Generators

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    Author(s)
    Polinder, Henk
    Wani, Faisal
    Dong, Jianning
    Language
    English
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    Abstract
    Recently, tidal stream turbines have become a preferable mode of harvesting tidal energy. The main issue for low utilization of tidal energy is the high levelized cost of energy (LCoE) from tidal stream turbines. A major reason for this is the high operation and maintenance costs for submerged installations. A possible way of minimizing the LCoE and improving the availability is to use a flooded (or a wetgap) generator rather than a conventional airgap generator. Inside flooded generators, the gap between the stator and rotor is filled with the seawater. This architecture has the potential to improve cooling and reduce reliance on ancillary systems (e.g., bilge system), thereby improving reliability. The chapter begins with a brief description of the generator systems used in current tidal stream turbines. The focus of the chapter is, however, to give a basic insight into the design aspects of the flooded generators, and compares it with the currently used sealed airgap generators in tidal turbine systems.
    URI
    https://library.oapen.org/handle/20.500.12657/49375
    Keywords
    tidal stream turbines, permanent magnet generators, flooded generators, corrosion, rotor-can
    DOI
    10.5772/intechopen.90433
    Publisher
    InTechOpen
    Publisher website
    https://www.intechopen.com/
    Publication date and place
    2020
    Classification
    Engineering: general
    Rights
    https://creativecommons.org/licenses/by/3.0/
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    Credits

    • logo Scoss
    • logo EU
    • logo Scoss
    • This project received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 683680, 810640, 871069 and 964352.

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