×

WOUND ROTOR BRUSHLESS DOUBLY-FED MOTOR

  • US 20120007461A1
  • Filed: 07/08/2011
  • Published: 01/12/2012
  • Est. Priority Date: 03/27/2009
  • Status: Active Grant
First Claim
Patent Images

1. A wound rotor brushless doubly-fed motor, wherein a stator comprises two sets of three-phase windings and the number of pole pairs is p1 and p2 respectively, and a rotor comprises a multi-phase wound winding and phase number m is satisfied with the relation m=(p1+p2)/mk, in which, when p1+p2 is odd, mk=1 and when p1+p2 is even, mk=2;

  • rotor slots are evenly distributed along the circumference of the air gap and rotor slot number Z′

    is satisfied with the relation Z′

    =n(p1+p2), in which n is a positive integer;

    rotor winding coils are multi-turn structure, coil number of each phase winding is nmk and each coil has the same span, but turn ratios among the coils are different;

    when the phase winding coils number ≦

    nmk, all coils within the phase winding are automatically connected in short after being connected in series.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×