Abstract: An electrical synchronous machine is provided for a rail-free vehicle. The vehicle has drive wheels and the synchronous machine is designed to generate a torque, which propels the vehicle, at the drive wheels. The synchronous machine has a stator and a rotor which rotates around the stator, wherein the stator has a stator winding of at least three-phase construction for forming a rotating stator magnetic field, and wherein the rotor has at least one rotor winding which is designed for forming a rotor magnetic field. A method for at least partially circumferentially establishing a current-excited synchronous machine provides a rotor yoke, provides a large number of rotor poles, fastens the rotor poles to the rotor yoke for forming a rotor, provides a stator, and inserts the stator into the rotor.

Abstract: A rotor for an asynchronous machine includes a laminated rotor core which is made of a plurality of rotor laminations that are stacked in a longitudinal direction of the rotor, an intended rotational axis of the rotor running in the longitudinal direction; and a rotor cage that has a number of rotor bars, which run through the rotor laminations in the longitudinal direction, and at least one short circuit ring, which is arranged on a laminated rotor core end lying in the longitudinal direction such that the short circuit ring electrically connects the rotor bars together. The laminated rotor core contains at least one rotor lamination in a region at the end. This rotor lamination has a greater strength and/or a greater rigidity in a radial direction with respect to the rotational axis than the other rotor laminations.

Abstract: An electrical synchronous machine is provided for a rail-free vehicle. The vehicle has drive wheels and the synchronous machine is designed to generate a torque, which propels the vehicle, at the drive wheels. The synchronous machine has a stator and a rotor which rotates around the stator, wherein the stator has a stator winding of at least three-phase construction for forming a rotating stator magnetic field, and wherein the rotor has at least one rotor winding which is designed for forming a rotor magnetic field. A method for at least partially circumferentially establishing a current-excited synchronous machine provides a rotor yoke, provides a large number of rotor poles, fastens the rotor poles to the rotor yoke for forming a rotor, provides a stator, and inserts the stator into the rotor.

Abstract: A rotor for an asynchronous machine includes a laminated rotor core which is made of a plurality of rotor laminations that are stacked in a longitudinal direction of the rotor, an intended rotational axis of the rotor running in the longitudinal direction; and a rotor cage that has a number of rotor bars, which run through the rotor laminations in the longitudinal direction, and at least one short circuit ring, which is arranged on a laminated rotor core end lying in the longitudinal direction such that the short circuit ring electrically connects the rotor bars together. The laminated rotor core contains at least one rotor lamination in a region at the end. This rotor lamination has a greater strength and/or a greater rigidity in a radial direction with respect to the rotational axis than the other rotor laminations.