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Synchronous machine rotor

  • US 5,736,803 A
  • Filed: 09/15/1994
  • Issued: 04/07/1998
  • Est. Priority Date: 09/21/1993
  • Status: Expired due to Fees
First Claim
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1. A synchronous machine rotor having poles and being associated with a stator, wherein a surface of one of said poles defines a first surface and an outer surface of said rotor defines a second surface, there being a magnetic airgap between said first surface and said second surface of said stator, said magnetic airgap being progressive in a progressive magnetic airgap area of only one side of said pole, said aerodynamic airgap being constant, said progressive magnetic airgap area including a tangential edge area disposed at an edge of said pole and a centrally disposed area disposed closer to the center of said pole than said tangential edge area, and said progressive magnetic airgap being thinner at said centrally disposed area than at said tangential edge area;

  • and having at least one amagnetic material progressive magnetic airgap area.

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