A coil winding for an electrical machine comprising litz wire that includes winding head sections and winding body sections, wherein the litz wire includes one or more baked-enamel wires having an outer layer composed of baked enamel, wherein the winding body sections are baked to one another by baking a baking material of the baked-enamel wires.

A method for manufacturing a curvilinear track section including: forming a curvilinear track portion; cutting out a first slot grouping from an exterior edge of the curvilinear track portion, wherein the first slot grouping is at a first predetermined angle; cutting out a second slot grouping from the exterior edge of the curvilinear track portion, wherein the second slot grouping is at a second predetermined angle; and inserting motor units into the first and second slot groupings. A curvilinear track section having: a curvilinear track portion; a first slot grouping formed in an exterior edge of the curvilinear track portion, wherein the first slot grouping is at a predetermined angle relative to the exterior edge; a second slot grouping formed in the exterior edge of the curvilinear track portion, wherein the second slot grouping is at a second predetermined angle; and motor units inserted into the first and second slot groupings.

In each coil (10), between a first radial section formed by a winding-start section (10a) and a second radial section formed by a winding-end section (10b) of a winding (10A), the circumferential lengths of the winding lap sections formed by said winding change in a continuous or stepped manner. For a first coil, the sequences within two slots (22) of the winding constituting the first coil are reversed with respect to one another by a twisted section (10d) between a first coil end (12a) and a second coil end (12b) of the first coil. The first coil and next second coil form a lap winding in which the twisted sections of the first and second coils are three-dimensionally entwined. The lap winding of said twisted sections continues for the third and subsequent coils, and the first coil end and the second coil end of each coil are continuous without spaces at the end surfaces of a core (20).

The present invention was contrived through attention being focused on the following in a prior-art distributed-winding coil: a solenoid configuration in which winding wires are to be wound is preserved when initially formed, but this configuration tends to be loosened during subsequent steps, and the initial winding sequence of the winding wires, or the position of the winding wires relative to each other, tends to be disrupted, and accordingly must be prevented, when a certain force is applied and the necessary bending or deformation is induced in coils with distributed winding in which the solenoid configuration is preserved, or when the coils are ultimately inserted into slots. Therefore, as a solution, the present invention provides a holding tool 30 provided with: at least two substrates 32 linked at one end so as to be able to open and close; an outlet 31 formed at the other end of the substrates 32; and a holding space 32a capable of opening on the outlet 31 side, and holding the first accommodation portion 11a or the second accommodation portion 11b of a coil 10 while maintaining the alignment state of the winding wires 10A that constitute part of the first accommodation portion 11a and the second accommodation portion 11b when the substrates 32 are closed; the holding tool 30 being capable of forming a twist portion at a first coil end and a second coil end and reducing the size of the coil ends of the coils while maintaining the alignability of the winding wires that constitute part of the first and second accommodation portions of the coil 10.

A form-wound coil of a stator of a generator of a gearless wind power installation is provided. The form-wound coil includes an electrical conductor with a first and a second terminal. The terminals are used serve in each case for electrical connection to a further form-wound coil. The terminals in each case have a thread for electrical connection using a screw. A winding structure, a stator having the form-wound coil, and a method for producing the stator are also provided.

Methods of assembling motor windings comprising wrapping windings around a central longitudinal axis in a cylindrical shape having a plurality of annularly spaced positions such that the windings form n and/or u shapes around the positions. As the windings encircle the longitudinal axis, they are wrapped in an outward spiral or inward spiral such that each pass of the windings is stacked on a previous pass.

A method of fabricating a dynamoelectric machine utilizing multi-turn coils includes manufacturing a multi-turn coil having turn and ground insulation and installation of the coil into the stator core of the machine. The loop regions of the coil have no ground insulation during installation and the ground insulation at the loop regions is completed after installation of the coil.

The present invention discloses an axial flux magnet motor stator assembly, an assembling method, and a ceiling fan, wherein a coil winding assembly can be prefabricated, then assembled on a stator winding column without the need to reserve a large avoidance space between two adjacent stator winding columns, accordingly the gap between them can be minimized, for which each of them can have a maximum number of turns of the coil winding assembly to enhance the magnetic flux, further improve the output power and torque, provide an assembly efficiency and reduce the manufacturing cost. The terminals of each coil winding assembly are located in the bottom cover filling slot and fixed by an adhesive to ensure that the electrical connection is reliable and stable. Thus, a ceiling fan of the present invention using the above assembly has the characteristics of large output power and torque under the same size.

A method for manufacturing a curvilinear track section including: forming a curvilinear track portion; cutting out a first slot grouping from an exterior edge of the curvilinear track portion, wherein the first slot grouping is at a first predetermined angle; cutting out a second slot grouping from the exterior edge of the curvilinear track portion, wherein the second slot grouping is at a second predetermined angle; and inserting motor units into the first and second slot groupings. A curvilinear track section having: a curvilinear track portion; a first slot grouping formed in an exterior edge of the curvilinear track portion, wherein the first slot grouping is at a predetermined angle relative to the exterior edge; a second slot grouping formed in the exterior edge of the curvilinear track portion, wherein the second slot grouping is at a second predetermined angle; and motor units inserted into the first and second slot groupings.

An embodiment provides a stator core including a plurality of first single teeth, a plurality of second single teeth and coils. The teeth are I-shaped and each have a long side, a short side, a connection portion and a wire-accommodating slot located on the sides of the connection portion. The coils are wound around the connection portions and accommodated in the wire-accommodating slots. The stator core is an annular element formed by splicing first single teeth and second single teeth in sequence in a staggered manner into a circle, and winding modes of the coils on the first single teeth and the second single teeth are different, so that the contour of the coils located on the outer side of the wire-accommodating slots of the first single teeth is different from the contour of the coils located on the outer side of the wire-accommodating slots of the second single teeth.