Abstract: An electrical machine comprises a longitudinally movable device and an intermediate rotor. A first arrangement of magnets is disposed on a first surface of the longitudinally movable device, and a second arrangement of magnets is disposed on a first surface of the intermediate rotor. The longitudinally movable device is movable in a first direction. The intermediate rotor's first surface is held adjacent the first surface of the longitudinally movable device such that it cannot move in the first direction. The intermediate rotor is, however, rotatable about an axis and the arrangement of the first and second arrangements of magnets translates movement of the longitudinally movable device into rotation of the intermediate rotor about the axis.

Abstract: A prefabricated coil for placement on a tooth for a direct drive is orthocyclically wound from a wire of circular cross section. The coil includes two straight portions having an inner surface facing an interior of the coil and an outer surface opposite and parallel to the inner surface. A distance between the inner surface and the outer surface defines a thickness of the coil. Two coil overhangs connect the straight portions. A distance between the coil overhangs defines a height of the straight portions. The inner and outer surfaces of the straight portions have the height of the straight portions and a width of the straight portions. A sheet-like insulator covers the straight portions. The wire and the sheet-like insulator are bonded together such that the coil is self-supporting under the application of pressure and temperature. The sheet-like insulator has a joint region at the outer surface.

Abstract: Provided are a motor sealing structure and a motor. The motor sealing structure comprises: a rotary shaft, a bearing, which is sleeved on the rotating shaft. A shaft shoulder structure is arranged on an outer peripheral wall of the rotating shaft at a position corresponding to the bearing along an axial direction of the rotating shaft, so as to form a cavity between a portion of the bearing and the shaft shoulder structure, and a fan blade structure, which is sleeved at one end of the rotating shaft and extends in the axial direction of the rotating shaft to the position of the bearing, and is inserted into and held in the cavity.

Abstract: Provided is a rotating electric machine. Angles formed by tooth center axes of adjacent teeth are defined as tooth pitch angles. Maximum tooth pitch angles are defined as first tooth pitch angles ?1. At least one of tooth pitch angles become smaller as proceeding from the first tooth pitch angles ?1 in a clockwise direction and a counterclockwise direction, respectively, and such tooth pitch angles are defined as second tooth pitch angles ?3. Cross-sectional areas of second coils, which are arranged in slots each formed between adjacent teeth corresponding to the second tooth pitch angles ?3 in a cross-section perpendicular to a rotation axis, is smaller than cross-sectional areas of first coils, which are arranged in slots each formed between adjacent teeth corresponding to the first tooth pitch angles ?1 in the cross-section perpendicular to the rotation axis.

Abstract: One aspect of a motor of the present disclosure may include a rotor having a motor shaft disposed along a central axis extending in one direction, a stator facing the rotor via a gap in a radial direction, and a housing having an accommodating portion configured to accommodate the rotor and the stator, and to enable oil to be stored therein, wherein the housing comprises a lower wall portion facing a vertical-directional lower region in the inside of the accommodating portion, the lower wall portion comprises a cooling flow passage formed therein, and refrigerant flows in the cooling flow passage, and at least a portion of the cooling flow passage overlaps the vertical-directional lower region in the inside of the accommodating portion when viewed along a vertical direction.

Abstract: A generator and a wind turbine are provided. The generator includes an active cooling circuit and a passive cooling circuit, the active cooling circuit is in communication with a closed space, and the passive cooling circuit is in communication with the external environment. The active cooling circuit includes mutually communicating chambers located at two axial ends of the generator, an air gap between a rotor and a stator of the generator, and radial channels distributed along an axial direction of the generator. The active cooling circuit is provided with a cooling device in communication with the closed space, and the stator is fixed on a fixed shaft through a stator bracket. The passive cooling circuit includes a first axial channel running through the stator, a second axial channel running through the stator bracket, and an outer surface of the generator. A heat exchanger is further arranged inside the generator.

Abstract: The rotor of a rotor assembly for an electric machine includes first magnetic structures utilized for torque production in the electric machine. Second magnetic structures including second magnetic poles not utilized for torque production in the electric machine are polymer-bonded to at least one of the rotor and the rotor shaft.

Abstract: An integrated apparatus of water-cooled motor and driver includes a motor housing and a driver housing. The motor housing includes a motor-housing inner wall, a motor-housing outer wall, an inlet, a heat-dissipation flow channel and an outlet. The motor-housing inner wall surrounds and receives a motor assembly. The motor-housing outer wall surrounds the motor-housing inner wall, and the exterior thereof has a first connecting surface. The inlet is disposed on the motor-housing outer wall. One end of the heat-dissipation flow channel is connected to the inlet, the end contacts and is received between the motor-housing inner wall and the motor-housing outer wall. The outlet is connected to the other end of the heat-dissipation flow channel and is disposed on the motor-housing outer wall. The driver housing receives a driver assembly, and the exterior thereof has a second connecting surface connected with and bonded to the first connecting surface.

Abstract: A fluid-cooled rotor for an electric machine and an asynchronous machine with a rotor winding cooled directly or close to a loss.

Abstract: The rotating electrical machine includes a rotor held so as to be able to rotate, and a stator that opposes the rotor and has a stator iron core in which a multiple of slots are formed. The stator includes a coil wound around a toothed portion that forms the multiple of slots and an annular frame that holds an outer periphery of the stator iron core, a trunk portion and a flange portion are formed in the frame, a notch portion is provided in the trunk portion and the flange portion, the stator iron core is held by the trunk portion, and a reinforcing member that straddles the notch portion is provided on the flange portion.

Abstract: A rotary electric machine includes a cylindrical portion. In the cylindrical portion, a coolant passage having annular shape is formed to allow the coolant to flow therethrough. The coolant passage is formed meandering in the axial direction and the passage width of the coolant passage in a first end side in the radial direction is narrower than the passage width in the radial direction in the second end side. The coolant passage includes a circumferential passage in the first end side where the coolant flows in the circumferential direction. The circumferential passage is configured such that a passage opening area of an intermediate portion between an input portion in an upstream side of the coolant passage and an output portion in a downstream side of the coolant passage is expanded compared to those of the input portion and the output portion.

Abstract: An electric machine includes a stator core and interconnected hairpins attached to the stator core and defining a path. A pair of the interconnected hairpins have first and second ends, respectively, and are circumferentially spaced apart from each other. A jumper is interconnected between the first and second ends. The jumper has a body defining first and second holes that receive the first and second ends, respectively. The first hole is defined by a perimeter having opposing first and second walls and opposing third and fourth walls.

Abstract: A motor includes a stator and a rotor. The rotor includes: a plurality of rotor core segments arranged along a circumferential direction of the rotor on the inner side or the outer side of the stator and spaced apart from one another to define a plurality of permanent magnet arrangement slots between the plurality of rotor core segments; a plurality of permanent magnets inserted into the plurality of permanent magnet arrangement slots, respectively; a first frame that couples the plurality of rotor core segments to the plurality of permanent magnets, the first frame being made of a first material; and a second frame that surrounds the plurality of rotor core segments, the plurality of permanent magnets, and the first frame and that couples the plurality of rotor core segments, the plurality of permanent magnets, and the first frame to one another. The second frame is made of a second material different from the first material.

Abstract: In a magnetic drive circuit of an actuator, a first yoke and a second yoke are disposed on both sides in a first direction across a coil, and a first magnet and a second magnet are fixed to the first yoke and the second yoke. The first yoke includes a first connecting plate part and a second connecting plate part that extend toward the second yoke. Thus, welding of the first connecting plate part and the second yoke and the second connecting plate part and the second yoke can be efficiently performed on a different side in the first direction (a side where the second yoke is located).

Abstract: A gas turbine engine includes an electrical device and a microchannel cooling system in communication with the electrical device to remove heat.

Abstract: The present disclosure provides a motor structure including a winding set, a rotor and a motor base. The rotor is driven by the winding set. The motor base includes a central portion, a surrounding portion, at least one connecting element and at least one limitation element. The winding set is disposed on the central portion. The surrounding portion is disposed around the central portion. The limitation element includes a first limitation part and a second limitation part disposed on the central portion and the surrounding portion, respectively. The connecting element is deformable and connected between the central portion and the surrounding portion. The connecting element includes a first supporting part and a second supporting part connected between a deformation part. The first supporting part, the second supporting part and the deformation part are cooperatively form a buffer zone between the first limitation part and the second limitation part.

Abstract: A motor includes a stator and a rotor rotatably coupled to a rotation shaft. The rotor includes: rotor core segments arranged along a circumferential direction of the rotor on the inner side or the outer side of the stator and spaced apart from one another to define permanent magnet arrangement slots between the rotor core segments; permanent magnets inserted into the permanent magnet arrangement slots, respectively; and a rotor frame including rotor frame pins that fix each of the permanent magnets between the rotor core segments. Each of the rotor core segments defines a rotor core hole that extends parallel to an axial direction of the rotation shaft.

Abstract: A motor including a rotor, a stator, an inverter, a housing, and a cover member. The housing is a single member that includes: a stator housing portion; an inverter housing portion housing the inverter; and a partition wall located between the stator housing portion and the inverter housing portion. The housing opening through which at least a part of the stator, an end on one side in an axial direction of the partition wall, and at least a part of the inverter housing portion are exposed is provided at an end on the one side in the axial direction of the housing. A three-phase coil wire extending from the stator passes through the end of the partition wall to the inverter, extends up to the inverter, and is connected to a connector terminal provided at an end on the one side in the axial direction of the inverter.

Abstract: A coreless rotating electrical machine for being operated under load exceeding rated load, driving method thereof, driving system including thereof; coreless rotating electrical machine for being operated under load exceeding rated load, driving method thereof, driving system including thereof, in which air space including air gap is formed by stator consisting of lid-type mount which fixes end face of energizable coreless cylindrical coil and rotor consisting of cylindrical mount or cup-type mount opposingly and rotatably positioned to lid-type mount with plurality of magnets equipped on inner surface of cylindrical or cup-type mount, wherein when load exceeds the rating, operation is enabled by adjusting supply amount of refrigerant liquid so the temperature of cylindrical coil does not exceed allowable maximum temperature at rated operation; refrigerant liquid supplied to air space including air gap to allow cylindrical coil to vaporize refrigerant liquid to cool by latent heat of vaporization of refrigera

Abstract: A motor includes a rotor, a back cover, a housing, and a brush card assembly. The rotor includes a core fixed to a shaft, a coil that magnetizes a core, and a commutator connected to the coil. The back cover includes a back cover bottom surface portion, and a back cover cylindrical portion on an outer periphery of the back cover bottom surface portion to have a cylindrical shape. The brush card assembly includes a brush card bottom surface portion spaced apart from the back cover bottom surface portion in an axial direction through a first gap. The brush card bottom surface holds brushes and includes a nip portion nipped by the back cover and the housing, an outer peripheral wall spaced apart from the back cover cylindrical portion in a radial direction through a second gap, and contact portions contacting the back cover cylindrical portion.