A retaining system for bus bars includes a basic element for fastening to an end face of a stator or stator segment of a dynamoelectric machine, and a predefined number of fixing elements configured to fix the bus bars to the basic element, wherein, when assembled, the retaining system has openings to suppress eddy currents when the bus bars are energized.

A pre-fitting nest and a method serve for forming a crown from a plurality of U-shaped electrically conductive hairpins to then be able to install the crown in a machine element of an electric machine, e.g., a stator. Here, an accommodating member has a plurality of grooves in which the legs of the hairpins are accommodated. The grooves are annularly disposed about a center and extend perpendicularly to the plane of the accommodating member. With respect to their size and geometry, they are configured such that in each case a first leg of a hairpin rotates within the groove thus to enable an unconstrained positioning of the second leg of the hairpin in another groove. One or several crowns formed from hairpins are provided for introduction into a machine element and inserted into the machine element.

Disclosed herein are a stator and a method for manufacturing the same. The stator according to embodiments of the present disclosure includes an insulating part and a plurality of stator coils each having two ends electrically connected to form one joint portion. The insulating part is configured to cover at least respective parts of the joint portions, and to provide a distance between neighboring joint portions. Accordingly, a partial discharge caused by a surge between the joint portions of the stator coils may be prevented, allowing operational reliability of the stator to be increased.

An electrical machine with a winding support is provided, which comprises a cylindrical base body and support teeth projecting radially from the base body and has grooves bounded by the base body and in each case two of the support teeth, and at least one winding supported by the winding support, which winding is formed by conductively connected conductor sections, which are each guided through at least one of the grooves of the winding support and project beyond the winding support at the axial end faces of the winding support, wherein a respective clamping ring is arranged at each axial end face of the winding support, wherein each clamping ring forms support sections that each extend radially along a respective axial end face of a respective one of the support teeth and mechanically contact at least parts of the conductor sections guided through the grooves adjacent to the respective support tooth, wherein the respective support section contacts the axial end face of the respective support tooth in a contact region, which is spaced apart from the adjacent grooves.

A stator assembly includes a stator frame structure having an outer annular frame with an outer edge running around a center axis; a plurality of stator segments mounted at the outer edge along a circumferential direction of the outer edge, each stator segment comprising at least one electric coil; and a wiring arrangement electrically connecting the stator segments with an electric power interface. The wiring arrangement comprises a plurality of wiring assemblies, each wiring assembly electrically connecting one of the plurality of stator segments with the power interface is provided. Each wiring assembly is routed along and next to the outer annular frame and comprises electric cables connected in between the electric interface and the respective stator segment, wherein the electric cables are provided with electric insulation structures each surrounding one of the electric cables. Further described is an electric generator and a wind turbine with such a stator assembly.

A stator for a motor, the stator including a plurality of busbars, in which the plurality of busbars includes a first busbar, a second busbar, and a third busbar, two opposite ends of the first busbar are spaced apart from each other in a circumferential direction C and a radial direction R, two opposite ends of the second busbar are spaced apart from each other in the circumferential direction C and an axial direction A, and two opposite ends of the third busbar are spaced apart from each other in the circumferential direction C, the radial direction R, and the axial direction A.

A method for welding a plurality of wire segment pairs is disclosed. Each wire segment pair has two adjacent wire segments, and each adjacent wire segment has a contact region where the wire segment is to be welded to the respective other wire segment. The wire segment pairs are successively guided between two elements of a pressing unit, and at a weld moment in which at least one of the wire segment pairs is located between the two elements. The pressing unit exerts a pressing force onto the wire segment pair such that the contact regions of the wire segments are pressed against each other. At each weld moment, laser radiation is irradiated onto the wire segment pair to which the pressing unit is exerting the pressing force, and the laser radiation is irradiated onto a region in which the contact regions are pressed against each other.

A stator includes an annular stator core, a stator coil and a plurality of lead wires. The stator coil is comprised of windings mounted on the stator core and has a coil end part protruding from an axial end face of the stator core. Each of the lead wires is made up of a corresponding one of end portions of the windings of the stator coil. The lead wires include, at least, a first lead wire and a second lead wire. The first lead wire has a radially-extending part that adjoins the coil end part of the stator coil and extends in a radial direction of the stator core. The second lead wire has a circumferentially-extending part that adjoins and intersects the radially-extending part of the first lead wire and is located on the opposite side of the radially-extending part to the coil end part of the stator coil.

A long stator power supply section and a long stator linear motor for a maglev train, comprising a plurality of stator core modules (1) and stator coils (2) equal in number to the stator core modules (1). Each stator of the plurality of stator coils (2) is correspondingly embedded into one stator core module of the stator core modules (1) respectively; joints are arranged at both ends of each stator coil (2); the stator coils (2) on every two adjacent stator core modules (1) are detachably connected by means of the joints; and the joints of the stator coils (2) on the stator core modules (1) at both ends are connected to a feeder cable.

One aspect of a stator of the present invention is a stator disposed radially outside a rotor rotatable about a center axis line. The stator includes a winding portion including a plurality of conductors, a stator core in which a plurality of slots through which the conductor passes are provided, and a plurality of bus bars disposed on one side in an axial direction of the stator core. The plurality of conductors include a terminal conductor including two straight portions passing through two different slots and a bent portion connecting ends of the two straight portions on one side in the axial direction of the stator core. The terminal conductor is connected to the bus bar at the bent portion.