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D-ring implementation in skewed rotor assembly

  • US 9,941,775 B2
  • Filed: 11/21/2013
  • Issued: 04/10/2018
  • Est. Priority Date: 11/01/2012
  • Status: Active Grant
First Claim
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1. An assembly comprising:

  • a plurality of adjoined rotor sections having a plurality of poles and a plurality of void rows therethrough, wherein a plurality of void rows are radially distributed in each of the plurality of poles;

    a rotor bar extending through the plurality of adjoined rotor sections, the rotor bar including a longitudinal axle having a plurality of keybars extending outward from a surface of the longitudinal axis, wherein each of the plurality of keybars are disposed axially along and circumferentially around the longitudinal axle, and wherein an axis of the plurality of keybars is parallel to the longitudinal axle, and wherein a portion of each of the plurality of keybars overlap an adjacent keybar in the circumferential direction, and wherein each of the plurality of keybars are configured to receive a corresponding key on a corresponding rotor section of the plurality of adjoined rotor sections, thereby defining a stacked rotor assembly having a step-skewed configuration; and

    a plurality of conductive rings, wherein a portion of each of the plurality of conductive rings substantially surround one of the plurality of void rows; and

    wherein a portion of each of the plurality of conductive rings are inserted into a void space such that, during use, each conductive ring does not contact an adjacent rotor section.

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