An electric machine is described together with a stator. The electric machine comprises a stator, said stator comprising a cylindrical stator core having an end face; slots provided on the end face, each slot running through the stator core; a plurality of conductor bars disposed within the slots; and an end face assembly electrically connecting at least two of the conductor bars; a rotor having a plurality of magnetic pole pairs; and a controller electrically connected to said stator for regulating an excitation current supplied to or from the conductor bars, wherein the controller regulates an amplitude of the excitation current independently of a frequency of the excitation current. This arrangement simplifies stator construction and allows for optimisation of the electric machine.

A stator for a rotary electric machine includes a stator core, a stator winding, and a sensor unit. The stator has a hollow cylindrical shape and includes slots. The stator winding includes segment conductors respectively inserted in the slots. The sensor unit includes a sensor holding conductor, and a temperature sensor. The sensor holding conductor is welded to first and second segment conductors among the segment conductors. The temperature sensor is held by the sensor holding conductor. The sensor holding conductor includes first and second end portions, and a bent portion. The first end portion is welded to an end portion of the first segment conductor. The second end portion is welded to an end portion of the second segment conductor. The bent portion couples the first end portion and the second end portion to each other. The temperature sensor is held at an inner side of the bent portion.

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.

An electrical machine, including a winding carrier, which has a multiple grooves and bears at least one winding. Each winding is formed by a conductor having multiple groove portions, which are led through respective grooves of the winding carrier and conductively connected by connection portions of the conductor that lie outside of the grooves; when current flows through the conductor in question from a first connection point to a second connection point of the winding in question, the current is led about an axis of rotation of the electrical machine with a first direction of revolution in all the connection portions that lie in a first conductor portion of said conductor, which first conductor portion includes multiple connection portions, and with a second direction of revolution opposite the first direction of revolution in all the connection portions that lie in a second conductor portion of said conductor.

In this armature, between the first segment conductor and the second segment conductor that are joined to each other in the joint portion, a first clearance portion is provided between the tip end portion of the first leg portion and the second leg portion body portion in the axial direction, and a second clearance portion is provided between the tip end portion of the second leg portion and the first leg portion body portion in the axial direction.

A stator for an electric machine includes: a laminated stator core including stator grooves and having a plug-in side and a bending side, which bending side lies opposite the plug-in side in an axial direction; a stator winding having hairpin elements which are pushed into the stator grooves on the plug-in side of the laminated stator core and bent and electrically connected to the stator winding on the bending side of the laminated stator core; and an end plate which is arranged on the plug-in side in the axial direction between the laminated stator core and the hairpin elements. The hairpin elements are arranged in the axial direction so as to bear against the end plate.

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.

In this stator armature, a first leg portion has a first surface side part that has a thickness in a radial direction smaller than a thickness of a first leg portion body portion in the radial direction, a second leg portion has a second surface side part that has a thickness in the radial direction smaller than a thickness of a second leg portion body portion in the radial direction, and in the radial direction, a thickness of a joint portion is equal to or more than a thickness of a part other than the joint portion.

The coil assembling apparatus includes a transport means for transporting in sequence a plurality of coil segments, each of the plurality of coil segments consisting of a pair of slot insertion portions and a linking portion for coupling the pair of slot insertion portions, a segment arrangement body capable of rotating around a center axis thereof and provided with a plurality of segment hold portions annularly arranged along a circumferential direction of the segment arrangement body, into which the plurality of coil segments transported by the transport means can be respectively inserted from an outer radial directions of the segment arrangement body, and a guide means for guiding to insert one slot insertion portion of the pair of slot insertion portions of each of the coil segments into one of the segment hold portions each time the segment arrangement body rotates by a first predetermined angle.

Winding (12) of an electrical machine, having a plurality of winding segments (13), wherein each winding segment (13) respectively has at least two electrically conductive, hairpin-shaped or U-shaped or rod-shaped conductor elements (15), wherein the conductor elements (15) of each winding segment (13) are surrounded, in a central section thereof, by electrically insulating insulation (16) while leaving ends of the conductor elements free, and wherein each conductor element (15) of each winding segment (13) is connected in an electrically conductive manner to a conductor element (15) of another winding segment at the ends. Projections (17) which are made from an electrically insulating material and are used as spacers are applied to sections of the insulation (16) of the conductor elements (15) and bound sections of the coolant channels (18) for directly cooling the conductor elements (15).