Abstract: An industrial heavy load electric linear actuator includes a gearbox, an electric motor, a lead screw, an extension pipe and a load baring structure. The electric motor is connected to the gearbox. A portion of the lead screw is received inside the gearbox and driven by the electric motor, and another portion of the lead screw is extended out of the gearbox. The extension pipe is movably fastened to the lead screw. The load bearing structure includes a sleeve, a bearing, a fastening element, a fixation seat, and a rear supporting seat. The sleeve is mounted to the lead screw and holds the bearing jointly with the fastening element. The fixation seat and the rear supporting seat hold the bearing at outer perimeters of the sleeve and the fastening element.

Abstract: An enclosure for a rotary electric machine may include a housing supporting a stator of the electric machine and first and second end plates attached to the housing and rotatably supporting a rotor at opposite ends with respective first and second bearings isolated from the end plates.

Abstract: A core for an electrical apparatus includes a plurality of electrical steel sheets having a ferromagnetic or ferrimagnetic coating applied to both sides of the electrical steel sheets. The electrical steel sheets are arranged in a stack to form a laminated stack. The ferromagnetic or ferrimagnetic coating is applied to both sides of the electrical steel sheets. The coating may comprise MnZn ferrites, NiZn ferrites, MgMnZn ferrites, CoNiZn ferrites, Co ferrites, Ni ferrites, Yttrium iron garnets (Y3Fe5O12) or other ferromagnetic or ferrimagnetic coating materials.

Abstract: A laminated rotor core for a rotor of a permanently excited electric machine and to a method for producing same are provided. The laminated rotor core consists of a plurality of stacked lamination rings, each lamination ring consisting of a plurality of circular segments. Each circular segment has multiple receiving openings, which are arranged in a V-shaped manner relative to each other in pairs, for permanent magnets and multiple passages for respective fixing elements. The laminated rotor core is mounted on a holding disc using the fixing elements, which run in the passages of the laminated rotor core.

Abstract: In a rotor, magnetic poles having a pair of first magnets and second magnets are provided along a circumferential direction. The magnetic pole includes a pair of first flux barrier portions radially outside the first magnets, and a pair of second flux barrier portions between the pair of first flux barrier portions in the circumferential direction. The first flux barrier portion has a first end close to the adjacent second flux barrier portion. The second flux barrier portion has a second end close to the adjacent first flux barrier portion. A relative position of the first end in the circumferential direction with respect to a circumferential center of the magnetic pole is different between the adjacent magnetic poles. A relative position of the second end in the circumferential direction with respect to the circumferential center of the magnetic pole is different between the adjacent magnetic poles.

Abstract: This disclosure provides systems, methods, and apparatus, including: a first magnet with a first remanence value and a first coercivity value, the first magnet having a first cross-sectional area substantially normal to a direction of magnetization of the first magnet; and a second magnet positioned in series with the first magnet, the second magnet with a second remanence value and a second coercivity value that is less than the first coercivity value, the second magnet having a second cross-sectional area substantially normal to a direction of magnetization of the second magnet. A ratio of the first cross-sectional area to the second cross-sectional area is equal to or greater than a ratio of the second remanence value to the first remanence value.

Abstract: A method includes pumping coolant into a cooling system of a generator while the generator is generating electrical power. The method includes regulating flow into the cooling system using a pressure relief valve to recirculate a portion of the coolant back to an inlet of the pump. Using the pressure relief valve includes actuating the pressure relief valve based on input from the cooling system and/or from the generator.

Abstract: A stator for an electric machine includes a core and a multi-phase winding arrangement positioned on the core. Each phase of the winding arrangement includes a plurality of parallel paths defining a plurality of poles for the electric machine. Each parallel path includes a plurality of coils positioned on the core, each coil defined by coil legs and end turns. The coil legs include left legs and right legs extending through the slots of the core. The left legs and right legs of each coil are connected by first end turns at one end of the core and second end turns at an opposite end of the core. Each pole of the electric machine is associated with a pole slot set comprised of multiple slots on the stator core. For each pole slot set, legs for each parallel path extend through one of the slots of said pole slot set.

Abstract: To prevent varnish from adhering to an adhesion prohibited area while satisfying required performance for varnish. A method for manufacturing a stator of a rotating electric machine in which a coil is wound around a stator core, the method includes: a first varnish process of forming a first varnish portion by dropping varnish at a coil disposed on an outermost circumference or an innermost circumference of a coil end portion where the coil protrudes from the stator core and positioned close to the stator core; and a second varnish process of forming a second varnish portion to provide a non-existence region where varnish is not applied between the first varnish portion and the second varnish portion by dropping varnish at a position farther from the stator core than a position in the first varnish process.

Abstract: A work vehicle and energy storage device include a ballast providing ballast weight to the horizontal end of the work vehicle, a stator of an electric machine having a vertically extending axis, and a rotor of the electric machine fixed for rotation with the ballast.

Abstract: Embodiments of the present invention are directed to a generator for connecting to a predefined load, where the generator is designed and constructed to meet one or more requirements of the predefined load. In specific embodiments the one or more requirements include providing a minimum output voltage while starting the predefined load at or above ambient temperature and providing an output voltage that does not exceed an upper voltage limit while being driven at full speed without any load current at or below ambient temperatures, while maintaining high efficiency under a specified full load running condition and keeping the overall cost and size of the generator low.

Abstract: A lamination ring for constructing a laminated rotor core for a rotor of an electric machine and a method for producing a laminated rotor core made of multiple lamination rings for a rotor is disclosed. The lamination ring has multiple receiving openings for permanent magnets, and multiple structural elements are arranged homogeneously in the lamination ring at the same distance to one another in the circumferential direction in a rotated manner by an offset angle relative to the axis of symmetry such that the arrangement of structural elements is not symmetrical relative to the axis of symmetry of the lamination ring.

Abstract: Methods and systems are provided for an electric motor. In one example, the electric motor may include a stator with end windings protruding axially, along a central axis of rotation of the electric motor, from a first end of the stator and a first end plate arranged at the first end of the stator. The first end plate may have an inner face with indentations configured to receive the end windings, the indentations including a thermally conductive material to interface with the end windings. In addition, the first end plate may include at least one cooling channel for flowing a coolant.

Abstract: A base portion of a magnet holder attached to a rotor core of a rotor has a press-fit pin press-fitted into a press-fit hole provided at an end surface of the rotor core. An arm portion of the magnet holder has a holder rib which protrudes inward in the radial direction of an output shaft and of which one end surface in the circumferential direction serves as a pressing surface, and a come-off prevention protrusion inserted into an insertion groove provided at an outer circumferential surface of the rotor core. Magnets are located between the rotor core and the magnet holders, one end surface in the circumferential direction of each magnet contacts with the pressing surface, and another end surface contacts with a core rib protruding from the rotor core.

Abstract: A motor assembly includes a motor in a housing. The motor includes a stator and a rotor mounted in the stator casing, and an output shaft engaged with the rotor passes through the stator casing. Two opposite ends of the stator casing and the stator abuts against an annular plate and a rear end cap, respectively. Each screw passes through the rear end cap and the stator to screw into the annular plate, so the stator is fixed and restricted from moving axially in the stator casing. A front end of the housing is engaged with a motor fixing frame. The output shaft passes through a bearing on the motor fixing frame. The motor fixing frame is spaced from the motor. With such design, a vibration of the output shaft during operation is transmitted to the housing, but not directly affect the screws in the motor, thereby increasing the durability of the motor assembly.

Abstract: The present disclosure relates to a 3-phase connector integrated stator and an electric compressor including the same. The 3-phase connector integrated stator includes: a stator including a plurality of teeth formed to extend from a cylindrical core, insulators coupled to the core and the teeth so as to surround outer sides of the core and the teeth, and coils wound on outer sides of the insulators at the respective teeth; a motor cover coupled to an upper insulator in a central axis direction of the stator and having a connector coupling part protruding upwardly from an upper plate; and a 3-phase connector inserted into and coupled to the connector coupling part of the motor cover and having connection pins connected to 3-phase coils of the stator. Therefore, the 3-phase connector may be easily assembled to the stator, and the connector pins may be easily assembled to the 3-phase connector.

Abstract: Disclosed are a side-by-side phase winding, a stator and a motor. The side-by-side phase winding comprises two coil ring groups each consisting of Q coil rings, each coil ring being formed by connecting in series P hairpin conductor groups uniformly distributed in the circumferential direction; each hairpin conductor group comprises two hairpin conductors which are arranged in a staggered manner in the circumferential direction of the stator, each hairpin conductor comprises a hairpin main body which is integrally bent into a U-shape, the hairpin main body comprises two leg parts, a head part and support feet, and adjacent leg parts on the two hairpin conductors arranged in a staggered manner are located in two adjacent slots; and the Q coil rings in each coil ring group are arranged in Q circumferentially continuous adjacent slots of the stator.

Abstract: A rotating electric machine in which a coil wrapped in an insulating sheet is fixed to a slot provided in an iron core, wherein the insulating sheet has a porous structure, the coil and the insulating sheet, and the insulating sheet and the iron core are each fixed by an insulating varnish which is brought into a dispersion state by ultrasonic irradiation, and a mixed layer in which the insulating varnish and the insulating sheet are mixed due to penetration of the insulating varnish is formed in at least a predetermined range from a surface layer to an interior of the insulating sheet.

Abstract: An electrical machine, as a prime mover of an electrically driven motor vehicle, including a rotor and a stator, wherein the stator surrounds a substantially cylindrical space area, in which the rotor is rotatably arranged, the rotor includes a rotor shaft, on which a rotor core is arranged, the rotor core including groove-like recesses which extend toward the rotor shaft, electrically conductive conductors of a rotor winding and a displacement body for arranging the conductors in the groove-like recess are provided in the groove-like recesses, and at least one cooling channel, which extends in a longitudinal direction of the rotor shaft, is arranged in at least one groove-like recess.

Abstract: The present invention provides a rotary electric machine which suppresses a temperature rise of bearings by reducing heat transfer from internal air to the bearings and heat conduction from a rotor core, and improves the lubrication life of the bearings. A rotary electric machine of the present invention comprises a rotor including a shaft; a stator placed facing the rotor with a certain gap (an air gap) therebetween and supported by a stator frame; bearings which sustain the shaft; and end brackets which hold the bearings, wherein one of the end brackets includes a heat insulating layer on an inner side or an outer side of the machine to prevent heat from flowing into the bearings.