Abstract: A stator assembly for a rotating electrical machine is operatively associated with an internal cooling circuit including a plurality of cooling channels disposed through a stator core. To directed a liquid coolant medium through the stator core without leakage, the internal cooling circuit is formed from a plurality of cooling tubes including linear tubes and elbow tubes. Linear tubes are disposed in the cooling channels and can be expanded with a hydraulic expansion tool to frictionally fit the linear tube therein. The elbow tubes can fluidly couple two or more linear tubes and are disposed proximately beyond the first and second axial end faces of the stator core. To encapsulate the elbow tubes, first and second stator end castings of thermally conductive, electrically isolating material can be cast adjacent the first and second axial end faces.

Abstract: An electric motor includes a shaft that is rotatably supported for rotation around a rotation axis, a rotor that is located outwardly of the shaft in a radial direction and rotates integrally with the shaft, a stator that faces the rotor in the radial direction, and a tubular frame that has an inner peripheral surface to which the stator is fixed. The electric motor further includes a groove included in (i) the inner peripheral surface of the frame or (ii) an outer peripheral surface of the stator, and an insulating member disposed in the groove.

Abstract: A rotating electric machine according to an embodiment of the present invention includes a rotor; a stator; an insulator; and a coil. The rotor rotates about a first axis. The stator includes teeth projecting toward the rotor. The insulator is attached to each of the teeth. The coil is wound around the insulator. The insulator includes a pair of side surface portions that are mounted on the teeth to generate a biasing force against the teeth in a twisting direction with respect to a direction of the first axis.

Abstract: A stator for a rotating electric machine includes a stator core, a coil having a coil end, a cooling jacket that is attached to the stator core so as to house the coil end in the cooling jacket and that allows cooling oil to flow therethrough, introduction parts, and discharge parts. The coil end includes first portions, extending parallel to an end surface of the stator core, and pairs of second portions, each pair being connected to both ends of a corresponding one of the first portions, the pairs extending in a direction parallel to an axial direction. The cooling jacket includes an inner circumferential wall and an outer circumferential wall. The introduction parts are provided on the outer circumferential wall, and the discharge parts are provided on the inner circumferential wall.

Abstract: An electric motor is provided and includes a U-shaped rotor including circumferentially arranged U-shaped magnets, each circumferentially arranged U-shaped magnet defining an interior, and a stator supportive of a winding structure. The winding structure includes phase coils extending axially and radially within the interior for torque production with each circumferentially arranged U-shaped magnet and end windings respectively extending outside the interior between corresponding ends of sequential pairs of the phase coils.

Abstract: Among eight teeth pairs, one teeth pair is a non-use teeth pair around which an exciting coil is not wound, and other seven teeth pairs are use teeth pairs around which the exciting coil is wound zero or more times. The number Wa of windings of the exciting coil wound around the tooth included in the use teeth pair in a 90° positional relationship with respect to the non-use teeth pair and the number Wb of windings of the exciting coil wound around the tooth included in the use teeth pair in a positional relationship other than the 90° positional relationship with respect to the non-use teeth pair satisfy a relationship of 0?Wa?0.5Wb. The number Wa of windings and the number Wb of windings may satisfy a relationship of 0<Wa?0.5Wb.

Abstract: An apparatus comprising a coupling member. The coupling member can be disposed between a first portion of a busbar connectable to a first component of a drive unit assembly and a second portion of the busbar connectable to a second component of the drive unit assembly. The coupling member can couple the first portion of the busbar with the second portion of the busbar. The coupling member can include a first segment, a second segment, and a third segment. The first segment can be parallel to the third segment and the first segment can be perpendicular to the second segment.

Abstract: Described herein are fractional-slot-winding motors and electric vehicles using such fractional-slot-winding motors. In some examples, a fractional-slot-winding motor comprises a stator, a bus-bar assembly, and a plurality of coil units. The stator comprises a plurality of stator slots (e.g., 63 slots) extending through the core and radially offset relative to each other. Each dual-leg coil unit extends through two different stator slots and is electrically coupled to two other coil units on the coil-interconnection side of the rotor. Each single-leg coil unit extends through one coil slot and is electrically coupled to one other coil unit on the coil-interconnection side. At least some single-leg coil units can be coupled to a bus-bar assembly. Furthermore, the ends of the coil unit can have radial offsets relative to protruding portions, e.g., closer to the motor primary axis at the coil-interconnection side and further away on the opposite side.

Abstract: 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.

Abstract: A haptic transducer comprising a magnetic plate, a plurality of coils each separately couplable to a signal generator such that axis of each coil is perpendicular to the plate and all coils are on a common side of the plate, and signals may be sent from said signal generator to each coil individually.

Abstract: A vehicle electric machine includes a stator core having an inner diameter defining a plurality of slots, an outer diameter, and a plurality of mounting ears disposed radially outboard of the outer diameter. At least one of the mounting ears defines a cooling channel extending in an axial direction of the stator core. A radial distance between a center of the stator core and the cooling channel is greater than a radial distance between the center and the outer diameter. The machine further includes windings having portions disposed in the slots and end windings adjacent to an end face of the stator core.

Abstract: Provided is an electric generator including a stator including: a stator yoke a plurality of teeth, a plurality of slots extending radially from the stator yoke to respective radial slot ends, the plurality of slots being circumferentially interposed between the teeth of the stator, each slot including a bottom portion adjacent to the stator yoke and a top portion adjacent to the respective radial slot end. The stator further includes a plurality of coils housed in the plurality of slots, each slot housing at least one coil in the bottom portion and at least another coil in the top portion, each coil housed in the bottom portion of a first slot of the plurality of slots being connected to another respective coil housed in the top portion of a second slot of the plurality of slots.

Abstract: A flux machine has plural coil assemblies and plural magnet sets arranged in mutual close proximity and circularly about a central axis. Either one of the coil assemblies and the magnet sets are supported by at least one axle which is aligned with the central axis, and either one of the coil assemblies and magnet sets executes rotary motion about the central axis when electrical current is present in the coil assemblies. Magnetic flux of the magnet sets is directed axially and radially while machine rotation is orthogonal to the direction of flux. A plurality of magnets in each magnet set are supported by one or another of a plurality of coaxially aligned axles so that the flux machine may operate as an electrical motor, as an electrical generator, or both at the same time.

Abstract: A coil support for preformed flat coils of a stator of an electric rotary motor includes an annular supporting structure and a plurality of columns extending upwardly from the supporting structure. The columns are spaced apart from each other to form a corresponding plurality of coil receiving portions configured to hold the preformed flat coils in place before a potting operation. Each of the coil receiving portions is configured to support a lower part of one of the preformed flat coils.

Abstract: A stator of an electric motor includes a stator core including a rim and a plurality of stator teeth extending from the rim. The plurality of stator teeth define a plurality of tooth gaps between circumferentially adjacent stator teeth. A plurality of stator windings are wrapped along the plurality of stator teeth. The plurality of stator windings include a plurality of core segments extending along the plurality of tooth gaps, and a plurality of end turn segments connecting adjacent core segments. A plurality of non-electrically conductive cooling channels are located in the stator core. The plurality of cooling channels are configured to direct a cooling fluid flow therethrough to cool the plurality of stator windings.

Abstract: A kinetic power generation unit improves the magnetic field of an electric motor and the magnetic field of a power generator into a same magnetic field coupling of a same rotor, so that the rotors of electric motor and the power generator have the same rotational direction, and an exciting winding of the electric motor changes and transmits phases sequentially to a phase voltage by a brushless drive controller, so that an interference effect on the counter electromotive force of the electric motor and the counter-electromotive force of the power generator is changed to a positive effect.

Abstract: A stator liquid cooling structure and a stator structure of a stator yokeless disc motor are provided. The cooling structure includes an annular stator bracket and a water jacket. An outer periphery of the stator bracket is in a groove structure and is fixedly connected with the water jacket. Opposite upper and lower ends of the water jacket are provided with a liquid inlet and a liquid outlet. The stator structure includes stator cores, an armature winding, the stator bracket and the water jacket. A first stator core and a second stator core of the stator cores are same in structure and oppositely arranged. The armature winding is wound on first stator tooth bodies and second stator tooth bodies of the stator cores; the first stator tooth bodies and the second stator tooth bodies are inserted into gaps between adjacent blade-shaped cavities and fixed on the stator bracket.

Abstract: An electric motor comprises: a rotor having poles equaling a first number; and a stator having slots equaling a second number, the stator having stator windings formed by conductors wound in a wave pattern around the stator, wherein a third number of the conductors are located in each of the slots, wherein the conductors form three balanced parallel paths through the slots, each of the conductors in the three balanced parallel paths undergoing a same number of pitch turns, each of the pitch turns being either a standard pitch turn or a nonstandard pitch turn, the standard pitch turn involving wrapping around slots equaling the second number divided by the first number, the nonstandard pitch turn involving wrapping around more or fewer slots than the standard pitch turn, wherein each of the three balanced parallel paths forms a repeating pattern throughout the slots.

Abstract: An electric motor polyphase winding pack includes a plurality of coiled conductors, each of the coiled conductors corresponding to a phase of a plurality of phases. Each of the coiled conductors has a first side and a second side. The coiled conductors are arranged in a sequence in which all of the first sides are disposed sequentially in a first layer, and all of the second sides are arranged in second layer disposed adjacent to the first layer, such that some of the first sides in the first layers and some of the second sides in the second layer correspond to each phase of the plurality of phases.

Abstract: An electric machine may include an stator and a rotatable rotor. At least one of the stator or the rotor may include a plurality of multi-part trapezoidal teeth with an electromagnetic coil disposed around each tooth.