The disclosure relates to a method for producing a stator, where, for one or both layers of a two-layer winding, a tool with receiving regions is respectively provided on an end face of a laminated core. A relative arrangement of the receiving regions corresponds to a relative end position for conductor ends of the conductor elements. In a positioning process, the tool is moved into a first turning position and each conductor end of a first group of the conductor elements is respectively inserted into one of the receiving regions. Then the tool is turned into at least one further turning position and each conductor end of a further group of the conductor elements is respectively inserted into one of the receiving regions until the conductor ends of all the conductor elements of the layer are in the relative end position in relation to one another.

In this stator core, the interval in the circumferential direction of the stator core between an outer peripheral surface of an axial end of a slot accommodated portion of a concentric coil and a tooth facing the outer peripheral surface is larger than the interval in the circumferential direction of the stator core between an inner peripheral surface of the axial end and a tooth facing the inner peripheral surface.

The present invention relates to an outer-rotator-type switched reluctance motor that may provide a shortest magnetic path by configuring a magnetic circuit in stator salient poles and rotor salient poles with circumferential-directional slots formed in the stator salient poles and coils passing through the slots and wound along he circumferential direction of the stator core, may thus minimize magnetic loss in the cores to maximize use efficiency of magnetic energy, and may provide a sturdy structure while simplifying coil winding work.

An object of the present invention is to provide a rotor coil shaping device which can improve the production efficiency and reduce the labor intensity of workers. The device comprises a locating piece and a press piece located above the locating piece. A locating boss, extending upward and having a width the same as that of a rotor slot opening of a rotor, is provided in the middle of the locating piece in a longitudinal direction, a stop boss extending upward is provided on at least one of front and rear ends of the locating piece, and upper shaping blades each having an arc groove opening downward are fixed on a lower side of the press piece.

A rotating electrical machine that includes a rotor core; a stator core disposed so as to face the rotor core in a radial direction and including a plurality of teeth and a plurality of slots each located between adjacent ones of the teeth; and a concentric coil formed by concentrically winding a wire, and including a slot accommodated portion placed in the slot of the stator core and a coil end portion projecting in an axial direction from the stator core, wherein of the slot accommodated portion of the concentric coil, an axial end of the slot accommodated portion located on a side facing the rotor core is located closer to an outside in the radial direction than an axial middle part of the slot accommodated portion located on the side facing the rotor core.

A stator includes a multi-phase stator coil comprised of phase windings. Each of the phase windings is formed of a continuous electric conductor and includes in-slot portions and coil end portions. Each of the in-slot portions is received in one of slots of a stator core. Each of the coil end portions is located outside the slots so as to connect one adjacent pair of the in-slot portions. Each of the coil end portions includes at least one oblique part that extends obliquely at an oblique angle with respect to either an axial direction or a circumferential direction of the stator core. The oblique angles of the oblique parts of the coil end portions in at least one of the phase windings of the stator coil are set to be different from the oblique angles of the oblique parts of the coil end portions in the other phase windings.

Methods and system for creating spacing between insulated stator coils include a spacing device with an expandable container. The expandable container is positioned and expanded between stator coil end portions in order to create a space between the insulated stator coil end portions. Insulating elements are placed in the space created between the stator coil end portions, and the expandable container removed.

A method of forming a rotor includes inserting a conductor bar into a slot defined by a lamination stack to define a gap between the conductor bar and the lamination stack. The method further includes, after inserting, swelling the conductor bar within the slot to fill the gap and form the rotor. A rotor is also disclosed.