Abstract: A rotating electrical machine of a brushless wound field type disposed between a stationary case and rotating member that rotates inside the case includes a stator held by the case, including an AC coil that generates a rotating magnetic field with an alternating current, a field core held by the case, the field core including a field coil that generates a magnetic flux with a direct current, a rotor fixed in contact with an outer circumferential surface of the rotating member and held rotatably relative to the stator and field coil, a rotor side core portion that is a part of the rotating member. The magnetic flux of the field coil passes from the field core through the rotor via the second air gap, the stator and rotor via the first air gap, the rotor side core portion, and the field core via the third air gap.

Abstract: A stator assembly of a hairpin winding motor, comprises a hairpin coil, which includes a first end including a pair of two ends of the hairpin coil arranged to be adjacent to each other in a radial direction, a second end including a pair of two ends of the hairpin coil arranged to be adjacent to each other outside the first end in the radial direction, and a third end including a pair of two ends of the hairpin coil arranged to be adjacent to each other outside the second end in the radial direction. Here, a plurality of such first to third ends are repetitively formed along a circumferential direction, and a fixing cap fixes a preset number of ends among the plurality of first to third ends repetitively formed along the circumferential direction.

Abstract: A conventional axial gap rotary electric machine does not consider winding movement caused by resin molding in the vicinity of a lead-out part provided to a housing. In order to solve the problem, the axial gap rotary electric machine according to the present invention includes a stator which is formed by circularly arranging a plurality of core units having coils about a rotation shaft and which has a connecting wire that fastens, for each layer, coil rising wires from the plurality of core units, and the axial gap rotary electric machine has a configuration in which: the housing has a lead-out part through which the connecting wire is taken out to the outside of the housing; and the stator is arranged such that the region where the coil rising wire from the core unit is fastened with the connecting wire is located so as to avoid the region opposed to the lead-out part, the stator being integrally molded.

Abstract: An electric control device for actuating an actuator may include an electric motor including a rotor for driving the actuator and a substantially cylindrical stator housing having an axial lower side and a circumferential shell. The axial lower side may merge into the circumferential shell via a circumferential edge. The control device may also include an equipment housing including a substantially cylindrical motor mounting which at an axial end is sealed by a mounting bottom and in which the electric motor is arranged with the axial lower side facing the mounting bottom. On the axial lower side, a central, axially projecting motor end portion may be disposed. In the motor mounting between the circumferential shell of the stator housing and the equipment housing, an annular space may be defined. The annular space may be at least partly filled with an adhesive which attaches the stator housing to the equipment housing.

Abstract: A rotor for a motor or for a radial flux electromagnetic generator having a cylindrical support housing a plurality of magnets (4), characterised in that the cylindrical support comprises a cylindrical mesh (5a) having mesh elements each defining a recess (5) for a respective individual magnet (4), each recess (5) having internal dimensions that are just sufficient to allow the introduction of a individual magnet (4) in its interior while leaving a space between the recess (5) and the individual magnet (4) filled by a fibre-reinforced resin, the mesh (5a) being made from a fibre-reinforced insulating material, the rotor comprising a non-conductive composite layer coating the individual magnets (4) and the mesh (5a).

Abstract: A stator of a rotary electric machine comprises a stator core, a coil; and a plurality of bus bars. When viewed from a rotational axis direction of the rotary electric machine, the first terminal parts of the plurality of bus bars are arranged next to one another substantially in an upper and lower direction on the outside of the stator core in the radial direction, and the second terminal parts of the plurality of bus bars are arranged next to one another substantially in a horizontal direction above the stator core, and a first terminal part arranged on an uppermost side among the first terminal parts of the plurality of bus bars is arranged to be positioned below an uppermost part of the stator core.

Abstract: A rotor of a rotating electrical machine includes a rotor core, a plurality of magnetic pole portions arranged along a circumferential direction, and a plurality of arc magnets constituting the magnetic pole portions. Each magnetic pole portion includes a magnet portion of at least two layers along a radial direction. In front view, the rotor core includes an outer diameter side magnet insertion hole, an inner diameter side magnet insertion hole, and a refrigerant flow path hole provided between an outer diameter side magnet portion and an inner diameter side magnet portion to overlap a d-axis. A minimum width of a magnetic path formed between the outer diameter side magnet insertion hole and the refrigerant flow path hole is equal to or larger than a minimum width of a magnetic path formed between the outer diameter side magnet insertion hole and the inner diameter side magnet insertion hole.

Abstract: In the power generator, an alternator driven by an engine to generate power, an inverter for the alternator, a fan to cool the engine, and a shroud via which air blown by the fan is guided to a periphery of the engine are stored inside of a casing. A fan cover that covers the alternator and the fan is provided in an end portion of the shroud, a ventilating opening is formed in an end portion of the fan cover, and an inverter supporter in which the inverter is installed is provided in a circumferential edge portion of the ventilating opening.

Abstract: A stator in an electric motor and to a method for producing the stator in which a plurality of individual coils are wound on laminated stator poles and are provided with an insulation, wherein the insulation bears connection contacts for bringing the individual coils into contact with a printed circuit board, wherein the connection contacts are press-fitted into the printed circuit board. The present stator provides for a compact size and for simple and economical joining processes. In a preferred embodiment, the electric motor is a dosing pump motor for drug delivery systems.

Abstract: A rotary electric machine stator according to the present invention includes: a frame that includes: a tube portion; and a flange portion that is disposed so as to be integrated with the tube portion so as to protrude radially outward from a first axial end of the tube portion; a stator core that is configured into an annular shape, and that is fitted together with and held inside the tube portion; coils that are mounted to the stator core; and a plurality of positioning members that are mounted to the flange portion so as to be movable radially and circumferentially around an axial center of the stator core.

Abstract: A three-phase induction motor that is rotationally driven in response to supply of AC power from an inverter including a switching element formed by using a wide bandgap semiconductor includes: a stator including a stator slot having an open slot structure for inserting a former-wound coil; and a rotor including a rotor slot into which a secondary conductor is inserted, the rotor being disposed inside the stator via a gap. Assuming that the number of rotor slots is Nr, the number of stator slots is Ns, and the number of poles is Np, Nr, Ns, and Np are set such that the relationship of Nr?Ns?Np?6 is satisfied.

Abstract: A power unit structure for a vehicle includes a motor disposed in a power unit room of the vehicle and configured to transmit a driving force to drive wheels of the vehicle, an electric power converter disposed in the power unit room of the vehicle, and an electric power distributor disposed in the power unit room of the vehicle. The electric power converter is configured to convert supplied electric power into electric power to be supplied to the motor and is disposed on an upper side of the motor. The electric power distributor is configured to distribute electric power supplied from a power supply to the electric power converter and is disposed at a position where at least a part of the electric power distributor overlaps the electric power converter in an up-down direction of the vehicle when viewed from a vehicle front-rear direction or a vehicle width direction.

Abstract: A busbar assembly for an electric motor may include a busbar holder at least a portion of which is made of an electrically insulating material, and at least one busbar mounted on the busbar holder. The busbar may include a base portion extending along a mounting surface of the busbar holder, at least one coil connection terminal portion to be electrically connected to a coil of the electric motor, and a power source connection terminal portion to be electrically connected to a power source. The power source connection terminal portion may extend from the base portion and at least a portion of the base portion may include a resilient member allowing displacement of the power source connection terminal portion towards the busbar holder.

Abstract: A vibrating actuator is disclosed, comprising: a magnetic part including at least two magnets arranged with same polarities facing each other; a receiving part including a hollow member with a cavity for receiving the magnetic part and at least one coil wrapped around the hollow member and fixed thereto; elastic elements interconnecting the magnetic part and the hollow member; and a chassis. In one aspect, the magnetic part is fixed to the chassis via attachment elements such that the magnetic part, attachment elements and chassis are stationary, and the receiving part performs a linear movement with changing direction causing the vibration when an alternating current passes through the coil(s). In another aspect, the elastic elements are flat elastic metal or plastic membranes. In another aspect, a magnetic guidance member of ferromagnetic material partly surrounding the hollow member and coil(s) is mounted to the longitudinally outer ends of the magnetic part.

Abstract: In order to provide a rotary machine's stator that is capable of reducing the size of the coil ends and using a plurality of voltages without changing the winding arrangement, it is made to include a stator core (12) having a plurality of slots (14) provided along the circumferential direction, segments (22) that are composed of rectangular wires and received in the slots (14), and a distributed winding wire that is formed by arranging unit coils (21), each of which is made up of a plurality of the segments (22) disposed along the radial direction, in the circumferential direction of the stator core (12), and is made to form the unit coil (21) by connecting the segments (22) that are alternately and concentrically arranged in the radial direction with a plurality of slot pitches that are different from each other.

Abstract: A rotor includes a rotor core in which laminate steel plates extending in a radial direction with respect to a central axis are laminated in an axial direction, and magnets are inserted into the rotor core. Each of the laminate steel plates includes a base portion positioned on a radially outer side of the central axis, and pieces separately disposed on a radially outer side of the base portion with penetrating portions therebetween, and arranged side by side at predetermined intervals in a circumferential direction. The magnets are inserted into the penetrating portions and arranged side by side at predetermined intervals in the circumferential direction. Space portions are provided between the magnets adjacent to each other in the circumferential direction. A circumferential length of the pieces is shorter than a circumferential length of the magnets.

Abstract: An SR motor includes a rotor including N rotor salient poles where N is an integer of 2 or more, a stator including M stator salient poles where M is an integer of 3 or more, a shaft rotatably connected to the rotor, a sensor magnet that is fixed to an outer circumference of the shaft and includes an S pole and an N pole alternately arranged in the circumferential direction of the shaft, and three magnetic sensors opposed to the sensor magnet. The number of poles of the sensor magnet is N.

Abstract: An actuator for high rotational speed applications using a stator which utilizes laminated features to reduce Eddy current losses in the stator. This construction allows high pole counts while providing the efficiency and high speed benefits of a laminated construction. Laminated construction is very challenging for a high pole count lightweight motor, but embodiments of the device provide structural strength, and rigidity, as well as other benefits such as low manufacturing cost, high heat dissipation, integrated cooling channels, and light weight construction. Many of these benefits result from the use of a laminate sandwich of non-magnetic, heat conductive material, such as anodized aluminum, as a structural member of the stator.

Abstract: A rotor for an electric machine includes a core having circumferentially-spaced, axially-extending posts, and defining an axial passage, a winding carried by each of the posts and comprising an electrically-conductive wire repeatedly wound around the post such that a portion of the winding extends axially beyond the post to define an overhang with upper and lower surfaces connected by an end, and a hollow shaft defining a rotor inner surface and a rotor outer surface.

Abstract: An electric machine includes a stator assembly including a first stator segment and a second stator segment, the first and second stator segments each including a plurality of laminations extending generally along a circumferential direction, each pair of adjacent laminations of the first and second stator segments defining a gap therebetween. The first and second stator segments are assembled together such that the laminations of the first stator segment are arranged at least partially in the gaps between the laminations of the second stator segment.