A winding electric wire enables a space factor to be increased and an eddy current to be suppressed, despite using an easy winding process. A winding electric wire is configured such that one enameled wire or a plurality of enameled wires bundled in parallel or in a litz form are braided so as to be formed into a belt-like rectangular or square wire shape having flat braided wires forming flatly-molded layers the number that is two or a multiple of two.

An electromechanical rotary actuator includes a stator having teeth extending inwardly from an inner wall surface, wherein free ends of each tooth form an aperture dimensioned for receiving a rotor, the free ends forming a gap therebetween. A segmented set of electrical coils extends around each tooth, wherein each coil of the segmented set has a thickness sufficient for passing through the gap between the first and second teeth. Electrically insulating tabs extend into an opening around each tooth carrying the segmented set of coils. The tabs maintain each of the coils within the segmented set in a spaced relation to the stator. When fabricating the actuator, each of the coils are fabricated and individually placed around a tooth with each coil having a thickness and breadth for optimally packing the stator.

Apparatuses and method for manufacturing coil members (230, 250) for insertion in slots of a core of an electric dynamo machine, wherein the coil members (230, 250) are formed by bending portions of an electric conductor (10). Portions of conductor of a predetermined length are fed through an aperture (80), where at least one engagement member (51) can move to engage and bend the conductor (10) so as to form the configuration of the coil member (230, 250).

Winding bodies include: a first terminal wire that extends outward at a first axial end of a stator core from a radially innermost position inside slots; and a second terminal wire that extends outward at the first axial end of the stator core from a radially outermost position inside the slots, the first terminal wires are each led radially outward over coil ends of the stator winding, the second terminal wires are each led radially outward at positions that are nearer to the stator core than end portions of the first terminal wires that are led radially outward over the coil ends of the stator winding, and end portions of intraphase connecting second terminal wires are stacked in an axial direction with, placed in contact with, and connected to end portions of intraphase connecting first terminal wires that are subject to connection therewith.

A method for forming windings of a stator assembly in a blower includes providing a stationary portion for the blower including a tube adapted to support a rotor and using the tube as a mandrel to form the windings of the stator assembly.

A method is provided for fabricating an insulated metal coil for an electrical machine. The method includes 3D printing a metal coil having a plurality of turns. The method further includes subsequently infiltrating insulating material between the turns of the metal coil to electrically insulate the turns from each other.

A mother substrate that enables winding cores to be obtained in a manner in which the mother substrate is divided along x-direction division lines and y-direction division lines is prepared. Subsequently, x-direction division grooves are formed along the x-direction division lines on a first main surface of the mother substrate, y-direction division grooves are formed along the y-direction division lines on the first main surface, and shallow bottom surface exposure grooves, for exposing surfaces that are to be core portion bottom surfaces, are formed on the first main surface. The mother substrate is divided by performing a flattening process on a second main surface of the mother substrate that is opposite the first main surface until the second main surface reaches the x-direction division grooves and the y-direction division grooves to obtain the winding cores that are separated from each other.

A rotating electric machine includes: a stator core having a plurality of slots aligned along a circumferential direction; a stator having a stator coil with an enamel coating inserted into the slots of the stator core; and a rotor rotatably arranged over the stator core through a given gap. The stator coil includes: main coils of a plurality of phases in which a plurality of segment coils each having a rectangular cross-section wire formed into a substantially U-shaped wire in advance is connected to each other; a first sub-coil having a lead wire led from the slots and attached with an AC terminal, and connected to one end of the respective main coils; and a second sub-coil having a neutral wire led from the slots, and connected to the other end of the respective main coils. The lead wire and the neutral wire are each formed of a wire with a bend structure having a plurality of straights and bends.

There is provided an intravascular blood pump for insertion into a patient's heart. The blood pump comprises a slotless permanent magnet motor contained within a housing, the motor having p magnet pole pairs and n phases, where p is an integer greater than zero, and n is an integer ?3. The motor comprises a stator extending along a longitudinal axis of the housing and having 2np coils wound to form two coils per phase per magnet pole pair. The stator comprises inner and outer windings each comprising np coils electrically connected such that the current flowing through the coils is in the same direction, the coils of the outer winding arranged on an outer surface of the coils of the inner winding.

A U-phase winding includes four winding portions connected in series between a neutral point and a U-phase input end. A V-phase winding includes four winding portions connected in series between the neutral point and a V-phase input end. A W-phase winding includes four winding portions connected in series between the neutral point and a W-phase input end. These winding portions are arranged annularly around a predetermined location. Directions in which these winding portions are each wound from a first winding end to a second winding end are the same as viewed from the predetermined location.