• US 7,687,962 B2
  • Filed: 11/14/2006
  • Issued: 03/30/2010
  • Est. Priority Date: 11/22/2005
  • Status: Active Grant
First Claim
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1. A stator used for a three-phase motor comprising:

  • loop windings of two phases;

    a plurality of teeth that are adjacent in a circumferential direction; and

    slots formed between the teeth,wherein winding turn ratios of the loop windings of the two phases differ between adjacent slots in the circumferential direction,wherein the loop windings of the stator has only two phases,wherein a phase ratio of the plurality of teeth and the loop windings is set to be 1;

    1, andwherein a winding turns ratio of the loop windings of two phases disposed in each slot is set so that an electrical angle phase difference of each phase is approximately 120 electrical degrees, said each phase obtained by adding the induced voltages of the loop windings of the two phase disposed in each slot.

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