According to one embodiment, there is provided a rotating electrical machine coil with a conductor and an insulation layer that is provided around the conductor to cover the conductor, the rotating electrical machine coil including a linear part of the coil and a coil end that is separable from and electrically connectable to the linear part of the coil.

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).

A stator for an electrical rotating machine, in particular for use in a pod drive, includes a laminated stator core having coils. Each coil has a groove portion, a winding overhang portion and a connecting portion. The winding overhang portion is configured as a stator winding overhang board arranged at an end face of the laminated stator core and having an insulating main body and conducting tracks integrated into the insulating main body. Each conducting track is formed by a number of partial conducting tracks that are electrically insulated from each other. Conductors extend in the groove portion, with each conductor formed by a number of partial conductors that are electrically insulated from each other, wherein each of the conductors and an associated one of the conducting tracks of the winding overhang portion are electrically conductively connected in the connecting portion.

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.

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.

An electrical machine includes a stator assembly having an annular core and a conductive winding. The annular core includes a central bore. The conductive winding includes one or more stator winding bars disposed circumferentially around the central bore. The one or more stator winding bars include a core conductor and an insulation layer surrounding the core conductor. An end segment of the one or more stator winding bars at a connection interface includes a stress control structure surrounding the insulation layer. The stress control structure includes a printed scaffold and a dielectric backfill material. The dielectric backfill material fills pores of the printed scaffold. The porous scaffold is composed of a stress control material that is different from the dielectric backfill material.

Certain aspects relate to systems and methods to join leads of stator windings to components of an electric machine, such as a bus bar of a stator of the electric machine. Systems and methods include modifying a surface of the lead and laser welding the surface-modified lead to the bus bar. Systems and methods can include reducing the reflectivity of the lead by imparting a non-smooth surface on the lead, thereby allowing a laser to deliver concentrated energy onto the lead. The surface-modified lead can include knurled surface, a pattern of raised grooves stamped into the surface of the lead, or a roughened surface.

A motor includes a rotor including a shaft centered on a center axis extending vertically, a stator that is radially opposed to the rotor and includes coils, a conductive holder accommodating the rotor and the stator and including a penetration unit penetrating axially, and a coil lead wire support that is at least partially disposed in the penetration unit, includes a coil lead wire insertion hole into which coil lead wires extending from the coils are provided, and is made of an insulating material. The coil lead wire support includes a base and a fitting unit extending downward from the base, at least one of a circumferential length and a radial length of the fitting unit being shorter than the base, and the coil lead wire insertion hole is in the base and the fitting unit, and the coil lead wire is inserted into the coil lead wire insertion hole.

A device for inserting electrical conductors into a machine element of an electric machine comprises a collection receptacle for providing an assembly of one or several crowns formed from electrically conductive hairpins, and an inserting device for removing the crown assembly from the collection receptacle and for introducing the crown assembly into the machine element. An associated method comprises the steps of: providing, in a collection receptacle, an assembly of one or several crowns of hairpins; removing the crown assembly from the collection receptacle; and introducing the crown assembly into the machine element which, in particular, is a stator or rotor of an electric motor.

A rotating electrical machine of the present invention comprises a rotor; a stator disposed facing the rotor with a predetermined gap, and including a stator core and a stator coil; a high voltage bushing that outputs electricity from the stator coil to the outside; an electric power line including at least a connection ring extending in a circumferential direction, and connecting the high voltage bushing and one side of a coil end which is an axial-direction end of the stator coil to form an electrical path; and a dummy ring including a metal as a main material, and disposed in alignment with the connection ring in the circumferential direction and in a same circumference as the connection ring.