Abstract: An electrical machine stator comprising a core having coolers attached to the outer lateral surface thereof by means of detachable resilient fastening means including each a rigid member attached to the core, a resilient member mounted on the cooler and an adjusting means movably connected with the rigid member and being in contact with the resilient member to provide continuous pressing of the cooler in a radial direction.

Abstract: A stator bar winding of a slotless-core electrical machine comprises conductors enclosed in an insulating sheath with the conductors arranged in three concentric layers. Conductors of the inner layer are placed underneath every second conductor of the middle layer, whereas the conductors of the outer layer are placed over every other conductor of the middle layer. The conductors of the middle layer are bent in their overhang portions from the axial direction to the angle (90.degree.-.alpha..sub.1) which is twice as small as the angle 90.degree.-.alpha..sub.2) to which the overhang portions of two other layers are bent. The conductors of the middle layer are also electrically connected in series and alternately to respective conductors of the outer layer or inner layer.

Abstract: An arrangement in multiphase electrical machines in which a six-phase winding is provided with reduced maximum voltage between the terminals in the end portion. Three-phase windings are wound in opposite directions such that if one three-phase winding is wound clockwise, then the other three-phase windings is wound counterclockwise. The terminals of the three-phase windings are brought out at different sides of the stator. The winding reduces the highest possible voltage in the phase zone junction.