A low-speed permanent magnet (PM) cable wound generator for electrical energy conversion from marine or tidal currents has been designed and constructed. A key feature of this variable speed direct drive generator is its capability to efficiently generate electricity from tidal currents with very low velocities, in the order of 1 m/s. In arriving at an appropriate design for the generator typical characteristics of tidal currents were considered. Using these characteristics as input, and accounting for the electromagnetic losses, detailed computer simulations using a finite-element method software were carried out to come up with the final design. Various parameters that can influence the generator design are presented. An experimental set-up has been constructed based on the above-mentioned design in order to study the electrical and mechanical performance of the generator through a variety of experiments. The power input for this set-up is a variable speed motor, capable of operating the generator at rotational speeds of 0-16 r/min, representing tidal currents with very low velocities. The generator presented in this paper may be beneficial for a better understanding of an appropriate design and layout of tidal energy conversion systems.


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    Title :

    A low-speed generator for energy conversion from marine currents - experimental validation of simulations


    Additional title:

    Ein Niederdrehzahl-Generator für Energie aus Meeresströmungen - Versuche und Simulationen


    Contributors:
    Thomas, K. (author) / Grabbe, M. (author) / Yuen, K. (author) / Leijon, M. (author)


    Publication date :

    2008


    Size :

    8 Seiten, 7 Bilder, 1 Tabelle, 42 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English






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