A low inertia permanent magnet motor includes a stator and rotor. The rotor includes a generally tubular and hollow rotor body coupled to the shaft of the motor by one or more spokes and/or webs. The permanent magnets of the rotor are coupled to the rotor body. In some embodiments, the low inertia permanent magnet motor may be used to power a drawworks. In some embodiments, the drawworks may be controlled by an active heave compensation controller.


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    Title :

    Low inertia direct drive drawworks


    Contributors:
    PACE GARY (author) / WILLIAMS KEVIN R (author) / GARAGHTY JAMES (author) / ELLIS BRIAN (author)

    Publication date :

    2016-06-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren / B66D Haspeln , CAPSTANS / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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