Abstract: An electrical insulator assembly includes first insulators (200A) and second insulators (200B) that can be fitted onto teeth (121) of a stator core (110) of an electric motor in an alternating manner. Each of the first insulators has a first flange (210), a second flange (220) and a body (230). Each of the second insulators has a first flange (210), a second flange (400) and a body (230). The second flange of the first insulators has first and second overlapping parts (220E, 220F) on opposite circumferential sides. The second flange of the second insulators has first and second overlapping parts (400E, 400F) on opposite circumferential sides. The first overlapping parts (220E) of the first insulators radially overlap the second overlapping parts (400F) of the second insulators, and the second overlapping parts (220F) of the first insulators radially overlap the first overlapping parts (400E) of the second insulators.

Abstract: A generator arranged to be driven by an aircraft engine, the generator comprising a stator and a rotor. The stator comprises a stator core and a plurality of slots longitudinally extending in a direction of a longitudinal axis of the stator, for receiving conductors to form windings of the stator, and a plurality of power channels. Each power channel comprises a set of windings having at least a first phase winding including a first set of coils comprising a plurality of conductors wound in a lap winding configuration, the first set of coils having a split phase belt such that the first set of coils comprises at least a first coil and a second coil, the first coil being mechanically shifted with respect to the second coil by a predetermined number of slots of the stator. The rotor comprises a permanent magnet adapted to reduce eddy-current losses.

Abstract: A motor according to the present application includes a rotor including a magnet, a yoke including an inner side surface around the magnet and having an annular shape, and a holder configured to hold the yoke. The yoke includes an end portion at the holder side in a rotating shaft (X) direction of the rotor. An outer side surface of the holder fits in an inner side surface of the yoke. The end portion of the yoke at the holder side and an outer side surface of the holder engage with each other.

Abstract: An electric machine with a stator, a rotor, and a fluid cooling device. The rotor is supported by a rotor shaft and a first bearing arranged at a bearing shield. The fluid cooling device has a cooling tube secured to a carrier element in fluidic communication with a fluid input and output and extends inside a recess of the rotor shaft while forming an annular space. A sealing element is provided between the rotor shaft and the carrier element, which prevents fluid passage into a spatial region of the electric machine outside of the sealing region. A second bearing is axially spaced apart from the first bearing is between the rotor shaft and a second bearing shield for supporting the rotor. The rotor core extends in a space between the first bearing and second bearing, and the recess extends inside the rotor shaft axially to the second bearing.

Abstract: A power generating element according to an aspect of the present disclosure includes at least one magnetostrictive portion containing a magnetostrictive material, at least one magnetic portion containing a magnetic material, part of a surface of the magnetic portion being fixed to the magnetostrictive portion, a coil housing part of one of the magnetostrictive portion and the magnetic portion, and a magnet portion including a magnet and fixed to the magnetostrictive portion, wherein the magnetic portion is magnetically connected in parallel to the magnetostrictive portion and is fixed to the magnetostrictive portion so as to have an interval between the magnetostrictive portion and the magnetic portion, the interval being magnetically connected in series to the magnetic portion.

Abstract: A motor coil cooling structure, includes: a rotor core fixed to a rotation shaft having an internal supply path for coolant, and that includes a rotor-side flow path in communication with the supply path and passing through to a radial direction outer side of the rotor core; a stator core disposed at the rotor core so as to form a space between the stator core and the rotor core, and that includes slots each housing a coil; first flow paths formed so as to include the slots and pass through the stator core in a radial direction; second flow paths formed in an upper portion of the stator core relative to the rotation shaft, including the slots, extending in a radial direction and passing through the stator core only at a radial direction outer circumferential side thereof; and a supply section that supplies coolant from above the stator core.

Abstract: A rotor for a rotary electric machine is provided, the rotor including a pack of plates mounted on a shaft, the pack having a plurality of main plates mounted alternately with another plurality of spacer plates and the spacer plates having a base plate with a plurality of spacer profiles, the spacer plate having a crown region close to the shaft and a peripheral region with slots, wherein the plurality of spacer profiles includes at least one guiding spacer profile that has a first end portion arranged radially in relation to the shaft in the crown region of the spacer plate and a second end portion arranged radially in relation to the shaft in the peripheral region of the spacer plate, and the second end portion is offset angularly in relation to the first end portion.

Abstract: A plural magnet arrangement of a matrix of rows and columns having an altered magnet field alignment of a plurality of the magnets in a matrix comprising rows and columns of magnets in such a manner that there are at times a co-existing combination of changing attractive and repelling magnetic field regions all throughout the coil winding volume, reducing the counter electromotive force (voltage) during electrically connecting a load to the coil winding terminals and extends the time duration of the output voltage waveform and this is accomplished wherein the rotational torque required to rotate the centre magnet through the coil of which it is centred within is reduced.

Abstract: A structure self-adjusting type vehicle-mounted magnetic suspension flywheel battery coping with multiple operation modes and an operating method thereof are provided. An ant-nest type channel is formed in a radiator of the flywheel battery along a circumferential direction, and a plurality of counterweight magnetic adsorption devices are symmetrically embedded in a flywheel lower sphere. When the flywheel battery operates in a charging mode, a standby mode or a discharging mode, the operation mode of the motor is flexibly changed according to different recovered energy levels or output energy levels, and the loss in the magnetic bearing system is reduced through matching of different types of magnetic bearings according to different disturbance levels. The low-loss, high-safety and stable operation of the vehicle-mounted magnetic suspension flywheel battery in various operation modes can be realized.

Abstract: Asymmetric skewed rotors and an electric motor that incorporates said rotors. The rotor being are configured to rotate within a stator positioned to surround a portion of the rotors. The stator and rotors are aligned along a centerline (x). Each rotor includes an asymmetric feature, such that during operation dynamic balance results when the asymmetric feature on each rotor are aligned opposite one another perpendicular to the centerline (x) and static balance results when the asymmetric feature on each rotor are aligned opposite one another parallel to the centerline (x).

Abstract: In an armature, a busbar unit includes at least first-, second-, and third-phase busbars electrically connected to respective first-, second-, and third-phase armature windings. The first-phase busbar serves as a lowermost busbar in the axial direction, the second-phase busbar serves as an intermediate busbar stacked over the lowermost busbar in the axial direction, and the third-phase busbar serves as an uppermost busbar stacked over the intermediate busbar in the axial direction. A resin member of the busbar unit covers the lowermost busbar, intermediate busbar, and uppermost busbar stacked in the axial direction, so that the lowermost busbar, intermediate busbar, and uppermost busbar are integrated to constitute a busbar stack. A protrusion member is mounted to the intermediate busbar and protruding radially outward from the intermediate busbar. At least part of the protrusion member is located to be nonoverlapped with the uppermost busbar and the lowermost busbar.

Abstract: A system comprises a stator core defining a plurality of winding slots between circumferentially spaced apart teeth. A respective cooling channel is defined within each of the circumferentially spaced apart teeth for circulation of coolant fluid through the stator core. The stator core is a laminated structure, where the teeth, winding slots, and cooling channels are part of a common laminated structure with the stator core.

Abstract: An electric machine includes a stator defining multiple stator poles with associated stator windings configured to receive a stator current. The electric machine also includes a rotor defining multiple fixed rotor poles with associated rotor windings, wherein the rotor defines a field energizable by magnetic fields produced by the stator windings when receiving the stator current to produce relative motion between the rotor and the stator and wherein the rotor is maintained in synchronicity with the magnetic fields produced by the stator during operation of the electric machine. The electric machine also includes a rectification system configured control against an alternating current being induced in the rotor poles as the field is energized by magnetic fields produced by the stator windings when receiving the stator current.

Abstract: Aircraft electric motors are described. The aircraft electric motors include a motor unit having a rotor and a stator, wherein the stator includes a plurality of windings and cooling channels arranged to provide cooling to the plurality of windings, a drive unit configured to drive operation of the motor unit, and a cooling system. The cooling system includes an oscillating heat pipe containing a first working fluid, wherein the oscillating heat pipe is arranged to pick up heat from at least one winding, the oscillating heat pipe having an evaporator section arranged in thermal contact with the at least one winding and a condenser section arranged away from the evaporator section and a heat pickup portion arranged to receive a second working fluid to remove heat from the condenser section of the oscillating heat pipe.

Abstract: An object is to provide a stator coil having a corner portion with less start points for partial discharge while reducing loss. A stator coil having a conductor bar includes, at a corner portion thereof: a first insulating layer covering an outer periphery of the conductor bar; an electric conductor having one end electrically connected to the conductor bar on a distal end side of the corner portion, and another end placed on an outer surface of the first insulating layer; a first conductive layer covering an outer periphery of the first insulating layer and the electric conductor located on the outer surface of the first insulating layer; a second insulating layer covering an outer periphery of the first conductive layer; and a second conductive layer covering an outer periphery of the second insulating layer.

Abstract: Disclosed are a rotor and a permanent magnet motor. The rotor includes a rotor core, at least two first permanent magnets and at least two second permanent magnets. A coercivity of each first permanent magnet is different from a coercivity of each second permanent magnet, the at least two first permanent magnets and the at least two second permanent magnets are arranged in an axial direction in magnetic steel slots of the rotor core. One of the first permanent magnets and one of the second permanent magnets are arranged to be connected in series in a radial direction of the rotor core in one slot to form a permanent magnet pole. A consequent pole is formed between every two adjacent permanent magnet poles, and the permanent magnet pole forms a magnetic circuit passing through the consequent pole.

Abstract: A motor comprises a stator comprising at least one core; a coil wound on the at least one core of the stator; a rotor having a rotor pole and being rotatably mounted relative to the stator; and at least one magnet disposed between the rotor and the stator. The at least one core comprises a composite material defined by iron-containing particles having an alumina layer disposed thereon.

Abstract: A rotating electric machine includes a field system, which includes a magnet section, and an armature. The magnet section includes a plurality of magnets that are arranged at predetermined intervals and in alignment with each other in a circumferential direction. The magnets have easy axes of magnetization oriented such that at locations closer to a d-axis, the directions of the easy axes of magnetization are more parallel to the d-axis than at locations closer to a q-axis. In the magnets, magnet magnetic paths are formed along the easy axes of magnetization. The field system further includes a field-system core that is formed of a soft-magnetic material. The field-system core has protrusions protruding to the armature side. Each of the protrusions is located closer to the q-axis than to the d-axis in the circumferential direction. Circumferential end surfaces of the protrusions respectively abut circumferential end surfaces of the magnets.

Abstract: A linear drive system adapted for repetitive driving using a linear motor. Linkages are used to maintain the driven portion in linear motion. A coupled dual drive system in which two driven portions are coupled such that their coupled motions travel at the same velocity in opposed directions. A linear drive system with a return spring portion which is adapted to facilitate linear direction changeover. A coupled linear drive system which may be used as a mechanical power source for drive systems used in transportation and industry.

Abstract: A movable part of a linear motor, having a primary part movable relative to a secondary part, includes a carriage, the primary part, and an interface member for removably connecting the carriage to the primary part. The carriage is configured to fixedly support an object to be moved, such as, for example, a machine part of a machine tool. The carriage includes two opposite lateral sides and a bottom side having an interface member receiving portion including anchoring receiving parts. The carriage interface member is fixedly connected to the primary part and includes anchoring portions mounted on respective anchoring receiving parts of the carriage. Two opposite edge portions of the carriage interface member are aligned and are fixedly connected to a portion of respective opposite lateral sides of the carriage.