Abstract: A dynamo-electric machine is provided comprising a stator and a rotor assembly which is rotatably mounted relative to the stator and which has a rotor shaft. The rotor assembly also has a rotor winding through which current flows and which is connected to terminals associated with the stator in an electrically conductive manner without interruption via a slip ring arrangement. The slip ring arrangement comprises at least two pairs of slip rings, each pair having a stator slip ring and a rotor slip ring that permanently rest against each other in a ring-shaped non-cylindrical contact zone. The two rotor slip rings are arranged between the two stator slip rings. Furthermore, each rotor slip ring is arranged on a rotor support disk that is rotationally fixed to the rotor shaft. The position of the two stator slip rings can be changed relative to each other in the axial direction.

Abstract: A dynamo-electric machine is provided comprising a stator and a rotor assembly which is rotatably mounted relative to the stator and which has a rotor shaft. The rotor assembly also has a rotor winding through which current flows and which is connected to terminals associated with the stator in an electrically conductive manner without interruption via a slip ring arrangement. The slip ring arrangement comprises at least two pairs of slip rings, each pair having a stator slip ring and a rotor slip ring that permanently rest against each other in a ring-shaped non-cylindrical contact zone. The two rotor slip rings are arranged between the two stator slip rings. Furthermore, each rotor slip ring is arranged on a rotor support disk that is rotationally fixed to the rotor shaft. The position of the two stator slip rings can be changed relative to each other in the axial direction.

Abstract: Disclosed is an electric machine comprising a stator (1, 1?) and a rotor (2) which is mounted in two bearing (3, 3?) so as to be rotatable about the longitudinal axis (4, 4?) thereof and is provided with a rotor winding (5, 5?). A slip ring element (7, 7?) encompassing two slip rings (10, 10?; 11, 11?) and a support member (8, 8?) that is made of insulating material and is provided with a rotor shaft pin bore (9, 9?) is disposed on a rotor shaft pin (6, 6?) which protrudes from one of the bearings (3, 3?). Said slip rings are provided with connections (12, 12?; 13, 13?) which protrude from the support member of the slip ring on the face of the slip ring element located near the bearing while being joined to the rotor winding (5, 5?).