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Electric machine having segmented stator

  • US 7,592,728 B2
  • Filed: 05/07/2007
  • Issued: 09/22/2009
  • Est. Priority Date: 05/10/2006
  • Status: Active Grant
First Claim
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1. An electric machine comprising:

  • a cylindrical stator comprising a plurality of stator sections, each stator section having an associated winding that is magnetically independent of the windings of the other stators, the winding being wound around an inner periphery of each of the plurality of the cylindrical stator sections, the plurality of stator sections being longitudinally offset from each other along a common central axis of the electric machine;

    a rotor disposed within the cylindrical stator, the cylindrical stator and rotor configured as a DC brushless motor;

    a housing configured to support the cylindrical stator and the rotor; and

    a controller supported within the housing and configured to provide a separate driving signal to each stator section.

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