The invention relates to a stator (100) which may be used within an electric rotating machine, an electric machine, an apparatus for preparing a stator and a method for preparing a stator. The stator (100) comprises a stator core (10) having a plurality of slots (11) arranged in a circumferential direction (C) of the stator core (10). At least a first conductor (12) and at least a second conductor (13) are arranged along a radial direction (R) of one slot (11). Axial end sections (22, 23) of the conductors (12, 13) are electrically connectable or connected and the axial end sections (22, 23) of radially adjacent conductors (12, 13) are distanced from each other. The distance (28) between the proximal end (29) of the axial end section (22) of a first conductor (12) and the stator core (10) is longer than the distance (26) between the distal end (27) of the axial end section (23) of a second conductor (13) and the stator core (10).

A wind turbine includes a dynamoelectric machine including a liquid-cooled stator and a rotor interacting with one another. The stator includes a magnetically conductive body and a winding system which is embedded in slots of the magnetically conductive body and which includes a main insulation arranged between a conductor of the winding system and a slot wall and including at least one recess provided in a cooling-channel impression of the main insulation to form at least one axial cooling channel extending between the main insulation and the slot wall, so that the at least one cooling channel borders the slot wall without insulation in direct contact with the slot wall. The winding system includes end windings which are also liquid-cooled. A can separates the stator and the rotor from one another and enables different cooling media for the stator and the rotor.

A method is presented for producing an arrangement for a plug-in coil of an electric machine, having the following steps: providing an arrangement of coil elements, which each are embodied as a rod-shaped coil element and are pre-aligned with one another; gripping the arrangement of coil elements by way of a grip apparatus, wherein the grip apparatus grips the arrangement of coil element by way of a first grip device in a first grip plane and by way of a second grip device in a second grip plane which is arranged beneath the first grip plane and at a distance therefrom; holding the arrangement of coil elements by way of the grip apparatus and inserting legs of the coil element into allocated grooves of a core; and releasing the grip apparatus from the arrangement of coil elements.

A stator or rotor for an electrical machine including a plurality of segments is provided, the plurality of segments being circumferentially joined at their ends in such a way that a segment circumferential gap is interposed between two circumferentially adjacent segments, the stator or rotor including at least one spacing element provided between two circumferentially adjacent segments for preventing the coil windings of two circumferentially adjacent segments contacting each other.

A segmented stator for a generator, in particular for a wind turbine is provided. The stator includes at least one stator segment comprising teeth and slots, in which coil windings are inserted, wherein the teeth extend from a yoke of the stator in a radial direction of the stator, wherein the stator segment has an end in a circumferential direction of the stator with an open slot, into which an end coil winding is arranged, and the stator segment at least one duct; a strap which extends at least partly at or along the end coil winding and in the duct and fixes the end coil winding to the stator segment; and a recessed component having a recess or a guide which guides the strap into the duct.

In a rotor of a rotating electric machine, a slot includes a winding insertion portion and a widened portion. A width dimension of the widened portion is larger than a width dimension of the winding insertion portion. A pair of step portions are formed on both sides of an end portion of the winding insertion portion on the widened portion side. A wedge member is spaced from and opposed to the pair of step portions. An insulation includes: an insulation main body arranged between a rotor winding and a damper bar; and an extended portion, which is arranged in at least a part of a space between the wedge member and the pair of step portions, and is configured to suppress movement of the damper bar in a circumferential direction of a rotor core.

A method is presented for producing an arrangement for a plug-in coil of an electric machine, having the following steps: providing an arrangement of coil elements, which each are embodied as a rod-shaped coil element and are pre-aligned with one another; gripping the arrangement of coil elements by way of a grip apparatus, wherein the grip apparatus grips the arrangement of coil element by way of a first grip device in a first grip plane and by way of a second grip device in a second grip plane which is arranged beneath the first grip plane and at a distance therefrom; holding the arrangement of coil elements by way of the grip apparatus and inserting legs of the coil element into allocated grooves of a core; and releasing the grip apparatus from the arrangement of coil elements.

A rotor (10) for a rotating electrical machine is disclosed. The rotor comprises a plurality of salient poles (12) and rotor windings (22, 24) wound on the salient poles. A cooling vent (26) is provided through the rotor windings, the cooling vent extending through the rotor windings in an axial direction and a radial direction. The cooling vent (26) extends in an axial direction from one end of the rotor pole to the other. The cooling vent (26) may be formed by a plurality of discontinuous spacers (28), or by a spacer (78) which extends continuously around the rotor pole (12). Providing a cooling vent which extends through the rotor windings in an axial direction and a radial direction may help to improve the thermal performance of the machine in efficient and cost-effective manner.

Provided is an electric generator having a stator, a rotor, a plurality of coils including conductors shaped as a tape, the stator extending axially along a longitudinal axis between a first axial end and a second axial end, the stator including a plurality of slots, the plurality of slots being circumferentially distributed around a longitudinal axis of the stator, each of the coils respectively comprising: two slot portions respectively housed in two slots of the stator, two end-windings axially protruding from stator at the first axial end and a second axial end.

A connector assembly (12) for electrically and mechanically connecting via bolting, the top and bottom stator coil sections (14, 16) of an electrical generator comprising at least one pair of stator coil sections (14, 16) having spaced apart upper coil headers (18, 20) and lower coil headers (22, 24), each comprising a conductive material to provide at least two parallel paths for passing respective flows of electric current; first and second connectors (26, 28) including respective couplers (36, 38, 40, 42) for connecting the headers (18, 20, 22, 24), wherein the first and second connectors (26, 28) are electrically and mechanically isolated from one another via an air gap (34) therebetween so that none of the couplers (36, 38, 40, 42) bridge the air gap (34) and thereby allow relative movement between the first and second connectors (26, 28).