Stator for an electrical machine, and electrical machine
Stator for an electric machine, having a stator core with a first end face and a second end face and a stator winding, which has multiple part windings and forms a number of phase elements. Each part winding has multiple shaped conductors, which extend through the stator core along an axial direction at predetermined angular positions in the circumferential direction, a first end portion, which comprises a free end of the part winding and protrudes from the stator core at the first end face, and a second end portion. The first end portion protrudes from the stator core at one of the predetermined angular positions and extends in the axial direction at the predetermined angular position.
1 . A stator for an electric machine, comprising:
a stator core with a first end face and a second end face and having a stator winding, which has multiple part windings and forms a number of phase elements, each part winding including
multiple shaped conductors, which extend through the stator core along an axial direction at predetermined angular positions in a circumferential direction,
a first end portion, which comprises a free end of the part winding and protrudes from the stator core at the first end face, and
a second end portion; and
multiple connectors which connect the shaped conductors at the end faces, and, at the first end face, form an end winding which extends inside a radial region,
wherein the first end portion protrudes from the stator core at one of the predetermined angular positions and extends in the axial direction at the predetermined angular position, and
wherein the second end portion assumes a greater radial spacing from the end winding than the first end portion.
2 . The stator according to claim 1 , wherein
the second end portion of a respective part winding comprises a free end of the part winding and protrudes from the stator core at the first end face or the second end face.
3 . The stator according to claim 2 , wherein
the second end portion of a respective part winding protrudes from the stator core at one of the predetermined angular positions at the end face and extends in the axial direction at the angular position.
4 . The stator according to claim 1 , wherein
the first end portion and/or the second end portion are integrally connected to a respective shaped conductor and is/are formed at the respective predetermined angular position with a parallel offset in the radial direction with respect to the shaped conductor.
5 . Stator The stator according to claim 1 , wherein
a respective part winding has a terminal and a star-point terminal, and
the first end portion forms the terminal and the second end portion forms the star-point terminal, or
the first end portion forms the star-point terminal and the second end portion forms the terminal.
6 . The stator according to claim 5 , wherein
some of the part windings form an arrangement and those end portions of the part windings of the arrangement which form the star-point terminal extend along the end winding on one radial side of the radial region.
7 . The stator according to claim 6 , wherein
some of the part windings form a second arrangement and those end portions of the part windings of the second arrangement which form the star-point terminal extend along the end winding on the other radial side of the radial region, and/or, for a respective arrangement, a star-point connection, via which the end portions of the arrangement which form the star-point terminal are interconnected, wherein the star-point connection is formed as a curved busbar.
8 . The stator according to claim 4 , wherein
a plurality of slots, which are arranged in the circumferential direction and in which the shaped conductors are received, are formed in the stator core,
those end portions of the part windings of a respective phase element which form the terminal protrude from the same slot or from multiple immediately adjacent slots, and
the shaped conductors are received in a predetermined number of radially arranged layers of a respective slot in the stator core, wherein those end portions of the part windings of a respective phase element which form the terminal adjoin shaped conductors which are arranged in a radially innermost one of the layers and/or in a radially outermost one of the layers.
9 . The stator according to claim 5 , further comprising
a terminal arrangement, which has a number of terminal elements which corresponds to the number of phase elements, wherein a respective terminal element interconnects those end portions of the part windings of one of the phase elements which form the terminal.
10 . The stator according to claim 9 , further comprising
an insulation device, which is designed for electrical insulation of the end winding with respect to the terminal elements.
11 . The stator as claimed in claim 1 , wherein
the end portion forming the terminal of a respective part winding is longer in the axial direction than the other end portion of the respective part winding.
12 . The stator according to claim 5 , wherein
the two first end portions of a phase element, which protrude at the same end face of the stator, are arranged at the inner and at the outer radial position of the same angular position in each case.
13 . The stator according to claim 5 , wherein
the two first end portions of a phase element, which protrude at the same end face of the stator, are arranged at the innermost and at the outermost radial position of the same angular position in each case.
14 . The stator according to claim 12 , wherein
two further first end portions are arranged adjacent to the two first end portions.
15 . The stator according to claim 2 , wherein
the first end portion and/or the second end portion are integrally connected to a respective shaped conductor and is/are formed at the respective predetermined angular position with a parallel offset in the radial direction with respect to the shaped conductor.
16 . The stator according to claim 2 , wherein
a respective part winding has a terminal and a star-point terminal, and
the first end portion forms the terminal and the second end portion forms the star-point terminal, or
the first end portion forms the star-point terminal and the second end portion forms the terminal.
17 . The stator according to claim 5 , wherein
a plurality of slots, which are arranged in the circumferential direction and in which the shaped conductors are received, are formed in the stator core,
those end portions of the part windings of a respective phase element which form the terminal protrude from the same slot or from multiple immediately adjacent slots, and
the shaped conductors are received in a predetermined number of radially arranged layers of a respective slot in the stator core, wherein those end portions of the part windings of a respective phase element which form the terminal adjoin shaped conductors which are arranged in a radially innermost one of the layers and/or in a radially outermost one of the layers.