Patent ID: 7026737

Claim:
A rotor for a synchronous machine, comprising: a support element constructed and configured to be mounted for rotation directly on a rotating output element of a driving machine which provides the sole support for the support element, and includes; radially extending first and second faces, and a connecting portion formed at a peripheral area of the second face of the support element, the connecting portion being constructed and configured to connect the support element to the rotating output element in a torsionally rigid manner with the connecting portion of the support element in direct contact with the rotating output element of the drive machine; and a pole structure arranged on the first face of the support element, wherein the pole structure includes: first and second rows of magnet arrangements and an intermediate layer of electrically and magnetically nonconductive material arranged between the first and second rows of magnet arrangements, each magnet arrangement including a plurality of alternately magnetized permanent magnets arranged around an outer periphery of the pole element and a plurality of soft iron elements respectively arranged between the alternately magnetized permanent magnets.