Abstract: In a motor, a connection portion between a lead wire and an aluminum wire is provided distant from a terminal block, with a leading end of a winding residing on one of cores that is not adjacent to a core that is at a position where the terminal block is provided.

Abstract: A hybrid drive assembly for a motor vehicle, with a main transmission (4) and an electric machine (10) arranged in a hybrid module (6). The electric machine has a rotor (14) that rotates within a rotational space (38). The hybrid module (6) and the main transmission (4) share a common oil system, whose oil temperature is measured. A device (62, 64) is provided which, if a limit value of the oil temperature is exceeded, controls the oil level (58) in the oil sump in the rotation space (38) of the electric machine (10) in such a manner that the rotor (14) becomes immersed in the oil, within the oil sump (58), and can take up oil and throw the oil off again off onto components of the electric machine (10) located within the rotational space.

Abstract: A method of controlling torque ripple in an electrical machine that includes a field winding for creating nominally constant field current using DC current and an armature winding for creating a rotating magnetic field using AC current, calls for superimposing a spatially varying current component on to the DC current of the field winding. Other methods are also disclosed that are suitable for electrical machines that have a winding that is excited with nominal DC current including SRMs, FSMs, and wound-field synchronous motors.

Abstract: A ship drive system includes a first and one second drive shaft for driving a respective propulsion unit, wherein each of the electric drive shafts includes at least one speed-variable generator driven by an internal combustion engine for generating a motor voltage having a variable amplitude and variable frequency, and at least one speed-variable drive motor that is supplied with the voltage and coupled to the propulsion unit. The first and second drive shafts can be switched from a first operating state, in which they are electrically disconnected from each other, to a second operating state, in which they are electrically coupled to each other such energy can be transmitted from the at least one generator of the one drive shaft to the at least one drive motor of the other drive shaft. To this end, the at least one generator includes a superconductor winding.

Abstract: A stator adapted to be used in a transverse flux electrical machine (TFEM) includes a plurality of phases comprising respective halves sized and designed to receive therein a plurality of cores about a rotational axis. The halves can be separated in angular portions sized and designed to be assembled together and further locate cores therein in respective predetermined positions. A TFEM phase assembly and a kit of phases components sized and designed to assemble a stator are also encompassed by the present application.

Abstract: A slim-type fan structure includes a stator (1) and a fan blade (2). The stator includes a circuit board (11) and a plurality of layout circuits (12) disposed to circumference the circuit board (11). The stator (1) includes an axial center (10) at a center portion thereof. The fan blade (2) includes a blade wheel (20), an axial sleeve (21) at a center of the blade wheel (20) and extended axially therefrom, a plurality of blades (22) formed to circumference an outer of the blade wheel (20), and a magnetic unit (23) disposed on the blade wheel (20). Also, the axial sleeve (21) is pivotally attached to the axial center (10). Accordingly, the magnetic unit (23) is formed by a plurality of N and S pole areas (230), (231) arranged alternatively in circular rows and corresponding to the layout circuits (12) along a vertical direction for the slim design.

Abstract: A production method for the laminated iron core includes a first process that segment iron core pieces which respectively have circular arc angles obtained by dividing 360° as an angle of circumference into m are separated from a belt shaped iron core material and mounted on a mount base, the segment iron core pieces are carried to a laminating position of a rotary laminating mechanism by a pusher and the rotary laminating mechanism including the carried segment iron core piece therein is rotated by 360°/m and a second process that the first process is repeated to form an annularly connected iron core piece in which the segment iron core pieces are annularly arranged. The second process is repeated to form a caulked and laminated iron core having a prescribed thickness. During the second process, the segment iron core pieces are caulked and laminated in the rotary laminating mechanism.

Abstract: An electric machine including a stator that is provided with at least one exciter unit including a coil, at least two annular yokes and at least one row of intermediate pieces, and a rotor having a structure and at least one receiver unit including at least two series of at least two rows of magnets. Two sides of each yoke include the first teeth, fitting with the intermediate pieces on a face of the exciter unit and alternatingly forming the second north poles and the second south poles. Each series is positioned opposite one face, forming an air gap with the exciter unit, with the electric machine thus including at least two air gaps, with a flux thus circulating inside the electric machine, dividing and regrouping itself in the vicinity of the magnets and of the yokes.

Abstract: A wheel design with heat management capability is provided for an aircraft landing gear wheel that is specifically configured to maximize the space available within a landing gear wheel well to support a geared motor assembly that drives the aircraft wheel when the aircraft is on the ground. A thermal interface between the geared motor assembly and a support wall effectively directs heat generated by brakes, motor, or gear components through the wheel ultimately to be shed entirely outside the aircraft to prevent damage to the wheel and motor components. The heat dissipating wheel and motor driver assembly described herein may be retrofitted in an existing aircraft wheel without changing existing landing gear components, including tires, piston, and axle.

Abstract: An electric machine is described. The electric machine includes a rotor comprising a rotor disk and a plurality of permanent magnets magnetically coupled to the rotor disk. The plurality of permanent magnets include a substantially flat profile and are aligned in a substantially planar array. The electric machine also includes a stator comprising a solid stator core and a plurality of coils each wound around a coil insulating member. The stator core includes a plurality of stator teeth extending substantially parallel to an axis of rotation of the rotor.

Abstract: A laminated iron core and a method for manufacturing the same are provided to secure the lamination strength of the respective iron core pieces thereof, and to provide good magnetic efficiency and to reduce a loss. In a laminated iron core including a first caulking section formed in an area thereof having larger magnetic flux density than other area and a second caulking section formed in the other area, the engagement area A of the recessed sub-sections and projecting sub-sections of the first caulking sections of divided iron core pieces adjoining each other in the laminating direction is set smaller than the engagement area B of the recessed sub-sections and projecting sub-sections of the second caulking sections adjoining each other in the laminating direction.

Abstract: Disclosed herein is a stator assembly for a motor including: a stator core which includes a rounded base having a plurality of first holes formed in the vertical direction and a plurality of teeth radially formed on the outer circumferential surface of the base; an insulation coating layer formed on the entire surface of the stator core except the inner face of the base and the periphery of the first hole; and one or more connection parts connected to the rounded base.

Abstract: A drive method is disclosed. An embodiment includes an operation of at least one drive propeller of the drive system below a first predefinable propeller rotational speed according to a first operating state by operating at least one drive motor, connected to the at least one drive propeller, of the drive system via a first alternating voltage. The method further includes operation of the at least one drive propeller above the first predefinable propeller rotational speed according to a second operating state by operating the at least one drive motor via a second alternating voltage. In a transition from the first operating state into the second operating state or vice versa, the first internal combustion engine is operated at such a rotational speed that the at least one drive propeller is driven at the first propeller rotational speed, and the first alternating voltage is synchronized with the second alternating voltage.

Abstract: An electric rotating machine includes a rotor and a stator. The rotor has a plurality of pairs of magnetic poles. The stator includes a stator core and a stator coil that is comprised of a plurality of phase windings wound on the stator core. The stator core has, for each of the phase windings of the stator coil, n circumferentially-consecutive single-phase slots, in which only the phase winding is received, per magnetic pole of the rotor, where n is a natural number not less than 2. Each of the phase windings of the stator coil has first to kth sections that are sequentially arranged from one end to the other end of the phase winding, where k is a natural number not less than 2. The first section is received in different ones of the single-phase slots for the phase winding from the kth section.

Abstract: The invention concerns an arrangement for a direct drive generator for a wind turbine, which generator comprises a stator with several stator segments each stator segment having at least one stator element for the power generation and which generator comprises a rotor pivotable around a center axis of the generator and relatively to the stator with several rotor segments each rotor segment having at least one rotor element for the power generation, wherein said arrangement comprises at least one stator segment and at least one rotor segment, and wherein the at least one stator segment and the at least one rotor segment are able to be at least temporarily supported against each other. The invention concerns further a direct drive generator comprising such an arrangement, a wind turbine comprising such a direct drive generator as well as a method for the assembly of the direct drive generator.

Abstract: A stator assembly structure for an axial flux electric machine is designed. The back iron for each silicon steel disk stator is formed into a specific structure with tooth-like protrusions for allowing the same to be integrated with the disk-type stator seat, while the disk-type stator seat is made of a material suitable for casting or mold forming. A coil is mounted on the disk stator, and a stator assembly is achieved by integrating the stator, the coil and the stator seat. The stator and the disk-type stator seat of the stator assembly are manufactured by using a one-piece cast or one-piece mold forming method so as to enable the contact surfaces of the stator and the stator seat to engage with each other even more tightly, and consequently enable the heat generated from the coil to be transmitted rapidly from the disk stator to the disk-type stator seat.

Abstract: A motor is provided for use in a machine. The motor includes a segmented stator comprising magnetically isolated core segments.

Abstract: An induction machine short circuit stop is interposed between a brace and a machine component, such as a generator building bolt, in order to limit component motion during a short circuit event. The stop is a block of resilient non-conductive material that is oriented proximal the machine component at a desired spaced gap. Gap dimensions may be modified by use of different height stop blocks and/or shims. The stop is affixed to the brace by straps, cordage or fasteners, such as threaded studs. The stop is suitable for retrofitting existing induction machines in the field or in refurbishing service centers.

Abstract: A motor device includes a main body, an assembling body, a stator and a rotor. The main body includes a first bearing hole and a plurality of first connectors, and all distances between each of the first connectors and an axle of the first bearing hole are the same. The assembling body has a second bearing hole. The stator includes a passage and a plurality of second connectors, the second connectors are coupled to the first connectors respectively to have the stator assembled in the main body, and the passage and the first bearing hole are coaxial. The rotor is disposed inside the passage and two ends of the rotor are installed in the first bearing hole and the second bearing hole respectively. By having both the stator and the rotor positioned by the main body, a gap between the rotor and the stator can be maintained consistently.

Abstract: Disclosed are an electric motor and an electric vehicle having the same. The electric motor includes a stator including a stator core and a stator coil wound around the stator core, a rotor disposed to be rotatable with respect to the stator, and a cooling unit configured to allow a cooling fluid to flow therein and disposed to be in contact with the stator to cool the stator, wherein an outer surface of the stator core includes grooves in which the cooling unit is inserted. Cooling performance can be enhanced by shortening a heat transmission path, and the cooling unit can be easily fabricated and coupled.

Abstract: Embodiments of the present invention provide methods for manufacturing an even-wall rotor or stator that do not suffer from drawbacks of the prior art. Even-wall rotors or stators produced according to those methods are also provided. In one embodiment, a method for manufacturing a rotor or stator for use in a mud motor is provided. The method includes providing a vacuum chamber; providing a metal electrode at least partially disposed in the vacuum chamber; providing a mold disposed in the vacuum chamber; and melting a portion of the electrode with a direct current arc, the molten metal flowing into the mold ring.

Abstract: Embodiments provide a method for assembling a motor. The method may include providing a first rotor, a second rotor and a stator; and assembling the first rotor, the second rotor and the stator such that the stator is arranged between the first rotor and the second rotor.

Abstract: A method for making a rotary electric machine comprises the steps of: preparing a core (18) having a plurality of pole expansions and a plurality of windings (100, 200, 300) made of electrically conductive material on the pole expansions, where at least a part of the windings (100, 200, 300) is made from a conductor wire having a free end (14) that can be connected electrically to a mains power supply; stably coupling to each other at least two free ends (14) of different windings (100, 200, 300) so as to connect them to a single power supply terminal; twisting the coupled ends (14) together to form a single electrical termination (5, 6, 7) twisted along a principal line of extension of the electrical termination (5, 6, 7).

Abstract: A multi-piece stator includes a pole cluster, a flux ring, and an insulation member. A rotor cavity is located at a center of the pole cluster, and multiple flux poles extend radially outward from the rotor cavity in a circumferential arrangement. The pole cluster includes a flux impedance feature between each of the multiple flux poles, and multiple bridge features maintaining the arrangement of the flux poles. The flux ring includes a ring wall having a minimum wall thickness and a pole cluster cavity defined by the ring wall. The insulation member has a shape corresponding substantially to a shape of the pole cluster and is located to effectively cover an outside surface of the flux poles. The pole cluster, the insulation member, and a field generation coil wrapped around a portion of the insulation member and a portion of the pole cluster are inserted into the pole cluster cavity.

Abstract: A method for making a rotary electric machine comprises the steps of: preparing a core (18) having a plurality of pole expansions and a plurality of windings (100, 200, 300) made of electrically conductive material on the pole expansions, where at least a part of the windings (100, 200, 300) is made from a conductor wire having a free end (14) that can be connected electrically to a mains power supply; stably coupling to each other at least two free ends (14) of different windings (100, 200, 300) so as to connect them to a single power supply terminal; twisting the coupled ends (14) together to form a single electrical termination (5, 6, 7) twisted along a principal line of extension of the electrical termination (5, 6, 7).

Abstract: The present invention is a high efficiency permanent magnet machine capable of maintaining high power density. The machine is operable over a wide range of power output. The improved efficiency is due in part to copper wires with a current density lower than traditional designs and larger permanent magnets coupled with a large air gap. In a certain embodiment wide stator teeth are used to provide additional improved efficiency through significantly reducing magnetic saturation resulting in lower current. The machine also has a much smaller torque angle than that in traditional design at rated load and thus has a higher overload handling capability and improved efficiency. In addition, when the machine is used as a motor, an adaptive phase lag compensation scheme helps the sensorless field oriented control (FOC) scheme to perform more accurately.

Abstract: A device, including a rotor, a stator, a coil wound around the stator, wherein the stator has a coil support structure having at least one side edge arranged along a line which is not parallel to a line extending from an axis of the rotor through a center of the coil.

Abstract: A drive unit for a door includes an electronically commutated multipole motor having: a stator part configured to be arrangable at a stationary structural component part; and a rotor part configured to be gearlessly connectable to a rotationally drivable element. The stator part and the rotor part include sheet metal elements stacked in a package-like manner. The sheet metal elements of the stator part and the sheet metal elements of the rotor part extend parallel to one another.

Abstract: The device comprises a single circular row of permanent magnetic poles and a circular row of electromagnets, magnetic-force-conducting elements of which have central polar part and two lateral polar parts connected to the central polar part and spaced from opposing (in the direction which is essentially perpendicular to the rotation axis) sides of the central polar part. Winding is situated upon central polar part. The part of winding positioned between the polar parts of the magnetic-force-conducting element is more than half the length of the whole winding. Central polar part may have at least one groove. The distance between the centers of adjacent polar surfaces of the magnetic-force-conducting element is set depending on the angle between the magnetic poles in the circular row. The angular dimension of the polar surface of the lateral polar part depends on the angular dimension of the polar surface of the central polar part.

Abstract: A laminated stator and a method for making a laminated stator of an electric motor. The method includes arranging a plurality of stator laminations into lamination stacks spaced axially from one another, each lamination stack including a first group of stator laminations including an annular portion and a plurality of tooth portions extending from a periphery of the annular portion, and a second group of stator laminations including only tooth portions positioned to correspond with the tooth portions of said first group. The method further includes winding stator windings around selected subsets of the plurality of teeth while the lamination stacks are spaced axially and meshing the lamination stacks with one another so the annular portions of the lamination stacks are axially adjacent one another and the plurality of teeth are intermeshed with the plurality of another stack.

Abstract: Disclosed herein is a switched reluctance motor having a double rotor structure. An outer stator salient pole corresponding to an outer rotor salient pole is formed to have an “E” shape by sequentially disposing a main salient pole, a first auxiliary salient pole, and a second auxiliary salient pole and an inner stator salient pole corresponding to an inner rotor salient pole is formed to have a pi (?) shape by sequentially disposing a first salient pole and a second salient pole, such that a magnetic flux path is reduced, thereby making it possible to prevent the loss of magnetic force.

Abstract: Teeth are arranged annularly around a rotation axis. The yoke has through holes. The through holes open in a radial direction around the rotation axis and in an axial direction along the rotation axis. The teeth are inserted through the through holes. A metal plate is arranged to face the yoke in the axial direction. A reinforcing plate is fixed to the teeth.

Abstract: An axial flux machine comprising a rotor mounted about an axis of rotation and having two axial faces. A first stator ring is positioned on the rotor adjacent to a first axial face, to define an air gap, between the first stator ring and first axial face. The first stator ring is formed by stator ring segments, each having a radially inner and outer edge. A second stator ring is positioned on another side of the rotor, adjacent to the second axial face, to define an air gap between the second stator ring and second axial face. The second stator ring is, also, formed by stator ring segments, each having a radially inner and outer edge and corresponding to a first stator ring segment. The stator ring segments are deflectable in unison in response to axial deflection of the rotor, to maintain the air gaps, due to link elements.

Abstract: A motor is provided for use in a machine. The motor includes a bridged stator.

Abstract: A flux compression generator (FCG) is provided for producing an electromagnetic pulse (EMP). The FCG includes an environmental case, a reactive load, a dielectric core, a superconducting stator, an electric energy source, a load switch, and a transition device. The reactive load transmits the EMP in response to an electric current pulse. The dielectric core has proximal and distal ends within the case, with the stator disposed coaxially around the core that provides structural support. The case contains the electrical energy source, the stator, the core and the transition device. The energy source connects to the stator at the proximal end and powers the transition device. The load switch connects the reactive load to the stator at the distal end. The energy source initially provides an electric current to the stator. The device upon activation heats at least a portion of the stator to reversibly transition the portion from a superconducting state to a non-superconducting state.

Abstract: A stator for an electric motor and method of manufacturing the stator is disclosed. The stator has a stator core including an annular yoke and a plurality of teeth, a plurality of polymeric casings formed over the plurality of teeth, and plurality of polymeric bridges that extend between the polymeric casings. Each polymeric bridge connects the radial ends of adjacent teeth. A shell separate from the polymeric casings is formed over the annular yoke.

Abstract: A universal motor includes a stator and a rotor rotatably installed in the stator. The stator includes a stator core having a yoke, n primary poles with windings wound thereon and n auxiliary poles. The primary poles and auxiliary poles are alternately arranged on the radially inner side of the yoke in a circumferential direction thereof. When the windings are electrified, n primary magnetic poles and n auxiliary magnetic poles are formed at the primary poles and auxiliary poles respectively, n being an integer greater than 1. All the primary magnetic poles have the same polarity and the polarity of each auxiliary magnetic poles is opposite the polarity of the primary magnetic poles.

Abstract: A motor includes a stator and a rotor, equipped to be movable in at least a first direction relative to the stator, the rotor operably interfacing the stator so that a motor force is generated in a first direction, where the stator comprises an anti-cogging element configured to generate anti-cogging forces on the rotor in at least the first direction and a second direction at an angle to the first direction.

Abstract: A motor stator includes an insulating frame having a plurality of projecting rods, an induction unit, and a plurality of conductive members. The induction unit includes an induction circuit board, a plurality of induction coils embedded within the induction circuit board, and a plurality of coil windings wound respectively on the projecting rods. The conductive members extend through the insulating frame and the induction circuit board for establishing an electrical connection between each of the induction coils and a corresponding one of the coil windings. The turn numbers of the coil windings are not limited by the area and thickness of the induction circuit board, and can be increased. Alternatively, the coil windings may be positioned to increase the magnetic pole slot number when energized. As such, a driving force of the motor stator can be increased.

Abstract: An electric motor assembly. A stator includes a set of windings and has a first end, a second end, and an outer radial surface. A rotor includes a shaft having an axis. A first frame supports the shaft at a first axial position. A canopy substantially surrounds the first frame. The canopy includes a fluid inlet and a fluid discharge. A second frame supports the shaft at a second axial position and includes at least one fluid outlet. A chute is positioned downstream of the canopy fluid discharge. The chute directs fluid flow along the outer radial surface of the stator towards the fluid outlet. A fan is coupled to the shaft downstream of the fluid outlet for rotation with the shaft.

Abstract: A driving unit includes a stator, a housing, and a spring pin. The housing includes a tubular section and a plate section. The tubular section accommodates the stator and includes a first groove on an inner wall thereof. The plate section has a flat plate shape orthogonal or substantially orthogonal to a central axis of the tubular section, and projects from an outer surface of the tubular section. The first groove is disposed in a peripheral direction of the tubular section within an area facing a joining portion across the central axis, wherein the joining portion is a portion connecting the tubular section to the plate section.

Abstract: A stator includes an iron core 3 in which a plurality of teeth 2 are connected into an integral body, and coil wires 5 each of which is wound in series around each set of a predetermined number of teeth included in the plurality of teeth. Each of the coil wires 5 is routed in a slanting direction between opposed faces of two adjacent teeth 2 in each set of the predetermined number of teeth 2, so that each of the coil wires makes a transition from a wire wound around one of them 2 to a wire wound around the other tooth 2.

Abstract: Stator winding (18) comprising multiple phase windings (12). A phase winding has at least two partial phase windings (120a, 120b) which include coils (123) and coil connectors (126) that run parallel.

Abstract: A device for the treatment of human or animal tissue by means of a movable instrument is disclosed. The device comprises means for generating a magnetic stator field, in which the tissue is located. For example, the means for generating the magnetic stator field may be a magnetic resonance tomograph (MRT). At least one conductor loop is provided on or in the instrument, and a generator is provided for generating a current that flows through the conductor loop in order to generate a magnetic useful field, which, in conjunction with the stator field, generates a resulting action for applying a useful force to the instrument.

Abstract: A method of manufacturing a laminated stator core and a laminated stator core manufactured by the method, the method capable of forming a recess 21 over one or both of (a) a lateral portion of an ear piece C of the stator core sheet A to be formed adjacent to the stator core sheet B and (b) a peripheral portion of the annular yoke piece D continuing to the lateral portion, the peripheral portion beside the ear piece C; fitting one ear piece E of the stator core sheet B with a gap in the recess 21; and thereby improving a material yield when the stator core sheets 13 are formed from the strip material 14.

Abstract: A fan structure comprises a stator module and a fan frame, the stator module comprises a fixing plate, an insulating holder, and a stator core. The fixing plate has a first surface, an opposite second surface and at least one fixing portion formed on the second surface and having a first engaging portion. The insulating holder has a first side facing the second surface of the fixing plate, an opposite second side and at least one catching member formed on the first side and having a second engaging portion. The stator core is coupled to the insulating holder. The fan frame has a base, the base is located between the fixing plate and the insulating holder, wherein the first engaging portion of the fixing member is engaged with the second engaging portion of the catching member.

Abstract: A brushless DC motor provided with nine slots and eight poles includes a stator including a stator core having pole teeth on the outer circumference thereof and a coil wound around each pole tooth; a rotor disposed at an outside position of the outer circumference of the stator via a gap and having a multiply magnetized permanent magnet with plural magnetic poles; a pole tooth surface formed at a portion of the pole tooth and facing an inner circumference of the rotor; a recessed portion formed on the pole tooth surface; and a slot formed between the adjacent pole teeth and extending a first angular range around a rotational center of the rotor; in which the recessed portion extends in a second angular range around the rotational center of the rotor, the second angular range is 1.2 to 3.0 times the first angular range, the recessed portion has a radial depth which is 0.

Abstract: A marking (7) that indicates inherent information about a stator (2), is formed of recesses inscribed at a predetermined position on the outer circumferential surface of a laminated iron core (21) of the stator (2), by melting a magnetic thin plate with a laser beam. The marking (7) is formed of recesses in the outer circumferential surface of the laminated iron core (21), i.e., in the outer circumferential surface, at the laminated side of the magnetic thin plate, of the laminated iron core (21). Accordingly, friction or the like does not peel off the marking.

Abstract: A rotary electric machine includes a rotor; a stator magnet core; a transformer primary coil wound around the stator magnet core in an insulation state and connected to a power circuit; a transformer secondary coil wound around the stator magnet core in an insulation state and connected to a battery by interposing a DC/AC converter.

Abstract: A motor having an improved structure to be driven while maintaining a constant level of performance, and a washing machine having the same, the washing machine including a body, a tub disposed inside the body, a drum rotatably disposed inside the tub, and a motor coupled to a rear surface of the tub to drive the drum, wherein the motor includes a stator, which includes at least one fixing pin inserted into the rear surface of the tub; and at least one fixing hole concentrically disposed with the at least one fixing pin, and a rotor rotatably disposed at an inner side or at an outer side of the stator.