Abstract: Device for switching over the operating mode of a dynamic pylon for dances comprises as follows: the latch (2) at least one detail of pylon assemble with main recess (1) for the latch (2) at least one detail of another pylon assemble with counter-recess (8) for the latch (2) one magnet lock comprising at least one permanent magnet (7), whereas the main recess (1) for the latch (2) performed opened from the side of its lateral wall towards the outer space around the pylon detail wherein the main recess (1) is located, whereas the latch (2) is a member of the magnetic lock (the second or the third one). Switching over the mode of pylon operation is possible without interrupting the performance of exercises.

Abstract: Various implementations include an axial flux machine including a rotor bearing a set of permanent magnets and a stator containing electro-magnetic coil assemblies disposed circumferentially at intervals about an axis. Each coil assembly has an axially extending stator tooth, one or more coils wound around the tooth, and one or more end shoes at an end of the stator tooth. The end shoes each have at least one circumferential edge adjacent a neighbouring coil assembly. In some implementations, radially innermost and outermost portions of the at least one circumferential edge are separated by a step projecting from the at least one circumferential edge. In some implementations, at least part of the at least one circumferential edge has a thickness less than a thickness of the inner radial edge thereby reducing a leakage flux between neighbouring electro-magnetic coil assemblies.

Abstract: A motor includes a rotor molded by resin casting, and a stator disposed inside the rotor. The rotor includes a cylindrical portion in which a plurality of magnets are arranged side by side in a circumferential direction. The magnets are exposed on a side of an open end as one end of the cylindrical portion in an axial direction of the cylindrical portion. The cylindrical portion includes an inner resin located inside each of the magnets in a radial direction of the cylindrical portion. The inner resin includes a first resin portion, and a second resin portion closer to the open end than the first resin portion in the axial direction. A sectional area of the second resin portion perpendicular to the axial direction is smaller than a sectional area of the first resin portion perpendicular to the axial direction.

Abstract: A mechanical energy amplification system having a frame that supports a cylindrical rotary reactor magnet assembly, an oscillating reactor magnet assembly, and an input impulse magnet assembly, which rotates a shaft of both the rotary reactor magnet assembly and the oscillating reactor magnet assembly when pivoted back and forth, and generating a greater output energy than an energy input at the input impulse magnet assembly by pivoting an output pivot shaft by the rotation of the shafts of the rotary reactor magnet assembly and the oscillating reactor magnet assembly.

Abstract: A motor control apparatus includes: a current supply unit configured to supply a coil current to a plurality of coils of a motor by controlling a voltage to be applied to the plurality of coils, based on a first command value of an excitation current and a second command value of a torque current; and a control unit configured to control the first command value based on a rotation speed of a rotor of the motor, wherein the control unit is further configured to control, when the rotation speed of the rotor is lower than a first threshold value, the first command value to cause the excitation current to be larger than zero, and control the second command value to supply the torque current in accordance with a load of the rotor.

Abstract: A rotor for an electric machine, where the rotor has a plurality of annularly formed laminated core segments, which are arranged in succession in the longitudinal direction of the rotor, and each laminated core segment has at least one pocket with a pole component arranged therein, where the pole components arranged in succession in the longitudinal direction of the rotor form a pole assembly, and the pole assembly has a W-shaped progression in relation to its longitudinal direction.

Abstract: A rotating electrical machine includes a stator, a rotor, and a casing that accommodates the stator and the rotor, in which a {111}<211> orientation intensity (A) of a core material of the stator is in a range of 2 to 30, a {111}<211> orientation intensity (B) of a core material of the rotor is in a range of 1 to 15, and both the orientation intensities satisfy a relationship of an expression (1) A>B.

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: A motor includes a rotor, and a stator that generates a magnetic field to rotate the rotor. The stator includes a plurality of teeth, a plurality of winding wires including a winding portion wound around each of the plurality of teeth, a neutral wire provided on one end side of the winding portion, and a power wire provided on the other end side of the winding portion, and a plurality of neutral points at which a plurality of the neutral wires is electrically connected by connection terminals. The plurality of neutral wires includes a plurality of first fixation portions in which the plurality of neutral wires is fixed to each other in positions that are on a winding portion side compared to the plurality of neutral points, and a second fixation portion in which the plurality of neutral wires is fixed to each other from the plurality of first fixation portions to the plurality of neutral points.

Abstract: The invention relates to a method of increasing the coercivity of a sintered type NdFeB permanent magnet. The method comprises the following steps: a) preparing of an organic film with a predetermined thickness on a surface of the sintered type NdFeB permanent magnet; b) creating holes in the organic film according to a given pattern with the holes extending to the surface of the sintered type NdFeB permanent magnet; c) filling the holes with a metal powder, the metal powder including or consisting of at least one of Dy and Tb; and d) performing a thermally induced grain boundary diffusion process.

Abstract: A flux-mnemonic permanent magnet synchronous machine (FMPMSM) includes: an annular stator having a winding; a rotor disposed concentric with the stator; and a power inverter for dispensing an excitation current and at least one current pulse. The rotor includes: at least two circumferentially magnetized adjustable permanent magnets, each permanent magnet having two poles normal to an air gap between the stator and rotor; and one or more flux adjusters adjacent to one or more magnet poles of the permanent magnets. A polarization ratio of magnetization of at least one of the permanent magnets is adjustable during operation of the FMPMSM by application of the at least one current pulse.

Abstract: According to one embodiment, a first permanent magnet and a second permanent magnet are disposed in each magnetic pole of a rotor core. When angular coordinates of intersections of a flux line in a d-axial direction passing an outer end A1 of the first permanent magnet, a flux line in the d-axial direction passing through an inner end A2 of the first permanent magnet, a flux line in the d-axial direction passing an outer end B1 of the second permanent magnet, a flux line in the d-axial direction passing an inner end B2 of the second permanent magnet and a circumscribing circle of the rotor core are respectively defined as ?dA1, ?dA2, ?dB1 and ?dB2, the ?dA1, ?dA2, ?dB1 and ?dB2 satisfy a formula (?34/p<(?dB1-?dA1)<22/p, ?34/p<(?dB2??dA2)<22/p).

Abstract: A modular device that can operate as an electrical generator. First and second coil support plates are arranged in parallel orientation relative to each other forming a gap between the first and second coil support plates. Removable C-cores, each having wire coils, are removably attached to the first and second coil support plates. A rotor disc having selectively arranged magnets is disposed in the gap between the first and second coil support plates and is permitted to rotate about an axis that is perpendicular to the rotor disc and the parallel first and second coil support plates; a drive motor can power rotation of the rotor disc. As the disc rotates, electrical current is generated. The C-core assemblies can be interchanged, checked, removed and/or replaced while the electrical generator remains in operation without requiring cessation of such operation.

Abstract: An electric machine, in particular for a motor vehicle, is provided. The machine includes a housing, which is designed open and partially surrounds a housing interior. The machine, furthermore, includes a rotor, which is arranged rotationally adjustably relative to the housing in the housing interior. The machine additionally includes a stator, which is arranged fixed in place relative to the housing in the housing interior and includes multiple magnetic field coils with electrically energizable stator windings. For electrically energizing the stator windings the field coils are electrically connectable or connected to a power electronic system. The power electronic system includes a cooling plate for cooling the power electronic system and is formed by a power electronic module that is formed separately from the housing and can be inserted into the housing interior.

Abstract: A motor assembly includes a rotor and a sensor arrangement. The sensor arrangement has a sensor and a target. The target is applied to a surface of the rotor and the sensor is mounted on a bearing shield of the motor opposite the target.

Abstract: A motor includes a rotor rotatable about a rotation axis, and a stator surrounding the rotor so as to form an air gap between the stator and the rotor. The rotor has a rotor core having a magnet insertion hole and a rare earth magnet provided in the magnet insertion hole. The rotor core has a plurality of slits on an outer side of the magnet insertion hole in a radial direction about the rotation axis. Each of the plurality of slits has a length in the radial direction which is longer than a length in a circumferential direction about the rotation axis. The plurality of slits have a uniform minimum distance to the magnet insertion hole. When the minimum distance is expressed as T and the air gap is expressed as G, 2.75?T/G?5.25 is satisfied.

Abstract: A motor according to an embodiment includes a shaft as a rotation axis, a rotor, a bearing, and a spring member. The rotor is fixed to the shaft. The bearing is disposed opposite to the rotor in the rotation axis direction and rotatably supports the shaft. The spring member is disposed between the rotor and the bearing and includes a first end portion fixed to the rotor.

Abstract: Prioritizing one-way rotation and one-way torque in particular, a change is induced in the partial shape of a magnetic poles on the rotor of a reluctance motor in the direction of forward movement, or magnetic resistance is increased, the torque generation range of each phase is expanded, and the increase/decrease time of an electric current is ensured to reduce the noise. With the relative increase in copper losses due to this drive method, and harmful effects from the problem of an overvoltage generated in the full-pitch windings are reduced by a drive method in which the overvoltage is cancelled out.

Abstract: A brushless electrical machine with permanent magnet excitation, designed for propulsion, in particular of boats, pumps, electric vehicles, for operation as a servomotor, etc. The brushless electrical machine provides increased power at significant reduction of the weight and the inertia moment of its rotor. The rotor (11) comprises an outer (12), intermediate (13) and inner (14) steel rings. The surface of the poles of the rotor (11) is formed by interconnected cut-out parts (15). In the rotor (11), above the permanent magnets (17) are formed elongated axial slots (20). By number of poles 2 p less than 16 and at a diameter of the rotor (11) greater than 0.15 m, the axial slots (16) are divided into two equal parts by a third radial rib (25) with maximum width 0.0025 m, which is located under the middle of the cut-out part (15) and is connecting the intermediate ring (13) to the outer ring (12).

Abstract: The present disclosure relates to electrical machines comprising a rotor (13), a stator (12) and a radial air gap (39) between the rotor (13) and the stator (12), wherein one of the rotor and stator comprises an endplate driven on one side of the electrical machine, a central support (32) radially surrounding the other of the rotor (13) and stator (12), and a stiffener ring (33) on an opposite side of the electrical machine. The stiffener ring comprises an outer ring (34) connected to the central support (32), and an inner ring (35) connected to the outer ring (34). The outer ring (34) comprises a plurality of removably mounted outer segments (44). The present disclosure further relates to wind turbines and to methods for repairing parts of an electrical machine.

Abstract: A motor includes a rotor configured to rotate with a shaft. The rotor includes a plurality of yoke portions and a plurality of holding portions each corresponding to a space portion provided between the adjacent yoke portions and configured to hold therein a magnet. At least one of the plurality of yoke portions includes a tab portion extending towards the holding portion and configured to hold the magnet held in the holding portion. The holding portion includes an insertion space provided between a first end portion of the yoke portion in an axial direction of the shaft and the tab portion. The insertion space allows the magnet to be inserted into the insertion space towards an inner side in a radial direction of the shaft.

Abstract: Provided is a rotating electric machine capable of reducing oscillations and noise generated in the rotating electric machine. The rotating electric machine includes a stator, a rotor, and a frame. The rotor includes: a rotor core; and a plurality of permanent magnets, and the rotor is divided into a plurality of blocks. The plurality of blocks include: a skew-angle-increasing pair of blocks; and a skew-angle-decreasing pair of blocks. The frame includes: a body portion configured to hold the stator; and a flange portion, which projects outward from the body portion, and the body portion has a thickness that changes from one end to another end of the body portion in an axial direction thereof.

Abstract: An electrical machine comprises a stator and a rotor having a plurality of poles. Each pole comprises a radial axis centrally through the pole. Each pole comprises a first slot configuration having a magnet located centrally within the slot with the radial axis passing through the magnet or the magnet being substantially perpendicular to the radial axis. Each pole comprises a second slot configuration having a pair of magnets located at spaced apart positions within the slot. The pair of magnets are located each side of the radial axis. The first slot configuration is located between the second slot configuration and an outer perimeter of the rotor.

Abstract: A washing machine includes a motor. The washing machine includes a cabinet, a tub arranged inside the cabinet, a drum rotatively arranged inside the tub, and the motor. The motor includes a stator arranged on the rear wall of the tub, and a rotor. The stator is arranged to rotate by electromagnetically interacting with the stator. The rotor includes a plurality of rotor cores alternatingly arranged with a plurality of magnets in a radial form. Each of the rotor cores includes a body, a tooth formed in the front end part of the body, a first groove formed in the upper part of the body, and a second groove formed in the lower part of the body. A partition between the first and second grooves constitutes a part of the body providing an interval between the first and second grooves.

Abstract: Provided is a motor capable of suppressing reduction of the torque of the motor even if the amount of use of the permanent magnets embedded in the rotor core is reduced. A motor includes a rotor with permanent magnets embedded in a rotor core, and a stator positioned on an outer circumference of the rotor. The rotor includes magnetic poles formed around a rotation axis of the rotor, the magnetic poles having the permanent magnets arranged therein. The permanent magnets in adjacent magnetic poles are arranged such that positions of a north pole and a south pole of the permanent magnet in one magnetic pole are inverted from those of the permanent magnet in a magnetic pole adjacent to the one magnetic pole. The permanent magnets each have a residual magnetization that decreases as it moves from the north pole toward the south pole.

Abstract: A BLDC motor server includes a stator configured in a hollow cylindrical shape and comprising a plurality of teeth around which a plurality of coils is wound to form an electromagnetic field, respectively; and a rotor configured in a cylindrical shape rotatable within the stator and comprising a plurality of permanent magnets, each having an arched section in which an outer circumference side is extended in both directions from a rotation center side, wherein the plurality of permanent magnets is disposed, so that facing outer surface portions of two permanent magnets neighboring each other are adjacent to each other, and wherein a width Wo of the outer circumference side of each permanent magnet is configured to be smaller than a width Wc of the rotation center side thereof. The BLDC motor may reduce a noise and a vibration as well as increasing an efficiency of the motor.

Abstract: A multi-phase electric machine may include a stator, and a rotor for rotating within the stator, the rotor including poles having combination magnet pieces with varying strengths and dimensions creating a non-sinusoidal back EMF. In one aspect, a multi-phase electric machine may include a stator, and a rotor for spinning within the stator, the rotor includes a plurality of poles having magnet assemblies includes at least a low strength magnet and a high strength magnet therein for creating a non-sinusoidal back EMF. In other aspects, a multi-phase electric machine of the present disclosure includes a stator, and a rotor for spinning within the stator, the rotor including a plurality of poles having magnet assemblies includes at least a first magnet and second magnet therein for creating a non-sinusoidal back EMF wherein a strength ratio of the first magnet and second magnet greater than the absolute value of 1.

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: A two-phase bipolar step motor, comprises a rotor having a plurality of pairs of rotor poles of alternating magnetic polarity, and a stator having four primary energizable stator poles with conductive windings around those primary stator poles and four passive inter-poles located uniformly between every adjacent pair of primary stator poles, the passive inter-poles lacking any conductive windings. Both 18° steppers with five pairs of rotor poles and 30° steppers with three pairs of rotor poles are provided. Also provided are both PM hybrid mix steppers with 2D magnetic flux paths and hybrid steppers with 3D magnetic flux paths having an axial component. In each case, the overall lengths of the flux paths are substantially reduced from conventional designs resulting in improved motor efficiency.

Abstract: A method may include providing a stator. The method may also include equipping the stator with quadruple three-phase winding sets with concentrated fully-pitched winding. The quadruple three-phase winding sets may be connected in such a way that emulates a six-phase stator. Further, the quadruple three-phase winding sets may have the same conductor cross-sectional area. In addition, the quadruple three-phase winding sets may include a plurality of winding groups.

Abstract: A ferrite sintered magnet comprising an M type Sr ferrite having a hexagonal structure as a main phase, wherein the ferrite sintered magnet comprises La and Co, a content of B is 0.005 to 0.9% by mass in terms of B2O3, a content of Zn is 0.01 to 1.2% by mass in terms of ZnO, and the ferrite sintered magnet satisfies [La]/[Zn]?0.79 and [Co]/[Zn]?0.67 when an atomic concentration of La is represented by [La], an atomic concentration of Co is represented by [Co], and an atomic concentration of Zn is represented by [Zn].

Abstract: Provided is a motor for a drone comprising: a rotary shaft; a stator including a hole in which the rotary shaft is disposed; a rotor disposed outside the stator; and a housing coupled to the stator, wherein the stator comprises a stator core and a coil wound around the stator core, wherein the stator core comprises an annular yoke coupled to the housing, teeth extending radially from the yoke, and a shoe disposed at one end of the teeth, wherein the teeth comprise protrusions projecting from the side surface thereof. As such, the present invention provides an advantageous effect of securing an air flow path for heat radiation to enhance a heat radiating effect while preventing water or foreign matter from flowing into the motor.

Abstract: The present disclosure provides a molding method, a manufacturing method and a molding device for a radially anisotropic multipolar solid magnet, a micro-motor rotor using this magnet, and a component for a motor. A mold core is removed from a mold, and oriented poles, the number of which is the same as that of poles of a radially anisotropic multipolar solid cylindrical magnet, are arranged outside the mold. The sum L of widths or arc lengths of top ends of all the oriented poles is greater than or equal to 0.9?D, where D is the outer diameter of a mold sleeve. The magnet production method breaks through the dimensional restriction to the manufacturing of radially anisotropic multipolar magnets in the prior art, and can produce radially anisotropic multipolar magnets having an inner diameter or diameter less than 3 mm or even less for high-precision micro-motors.

Abstract: A rotating electric machine includes a field that includes a magnet unit having a plurality of magnetic poles, an armature including a multi-phase armature coil, and an electric power conversion device that is configured to perform electric power conversion and supply electric power resulting from the electric power conversion to the armature. Moreover, one of the field and the armature is configured as a rotor while the other is configured as a stator. The electric power conversion device includes at least one band-shaped busbar through which electric current flows during the electric power conversion. The at least one busbar has a cross section where a thickness in a lateral direction of the cross section at one end of the cross section in a longitudinal direction of the cross section is smaller than a thickness in the lateral direction at the other end of the cross section in the longitudinal direction.

Abstract: Disclosed is a radial-axial air gap three-phase disc-type transverse flux permanent magnet motor. Each phase includes a stator consisting of shoe-shaped stator cores and shoe-shaped permanent magnets, and a radial-axial rotor. The permanent magnets are magnetized in the circumferential direction, and the magnetization directions of the two adjacent permanent magnets are opposite to each other. Armature windings are wound in the grooves formed by the alternately arranged stator cores and the permanent magnets. The radial-axial rotor includes radial teeth, axial teeth, and right-angled yokes. The radial teeth are connected to the axial teeth through the right-angled yokes. Adjacent radial/or axial teeth are spaced at a mechanical angle of 360/n degrees. Radial teeth and the adjacent axial teeth under the same pole pairs are spaced at a mechanical angle of 180/n degrees, where n is the number of pole pairs of the radial-axial air gap three-phase disc-type transverse flux permanent magnet motor.

Abstract: A direct current (DC) electric motor assembly with a closed type overlap stator winding which is commutated with a timed commutating sequence that is capable of generating a stator rotating magnetic field. The coil overlap of the winding and a timed commutation sequence are such that the current in each slot of the stator is additive and when a previous magnetic pole collapses according to a commutation sequence; the energy released by that previous collapsing magnetic field is captured to strengthen the next magnetic field on the commutation sequence schedule. Electrical currents produced by the collapsing magnetic fields flow to low electric potential and add or subtract to the DC current provided by the commutator thus promoting formation of the next magnetic on commutation schedule. When used with a suitable commutator and rotor, the electric motor assembly provides a true brushless high torque speed controlled Real Direct Current (RDC) motor that operates with higher efficiency and higher power density.

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 rotor frame that couples the plurality of rotor core segments and the plurality of permanent magnets to each to other, and an outer ring that is made of a non-magnetic material and that surrounds an outer end of the plurality of rotor core segments and an outer end of the plurality of permanent magnets. The plurality of rotor core segments and the plurality of permanent magnets are alternately arranged along the circumferential direction of the rotor.

Abstract: Provided is a rotating electric machine, including: a stator including: an annular core back; and a plurality of teeth projecting in a radial direction from the core back and being arranged in a circumferential direction, the plurality of teeth having slots each formed between the plurality of teeth adjacent to each other in the circumferential direction; and a rotor including: an annular rotor core which is arranged coaxially with the stator through a magnetic gap; and a plurality of magnetic poles arranged on the rotor core in the circumferential direction, wherein the rotor core includes a plurality of segment cores formed by dividing the rotor core in the circumferential direction with at division surfaces, and wherein the number of segments of the rotor core is different from a divisor and a multiple of the greatest common divisor of the number of poles of the rotor and the number of slots.

Abstract: A rotor core has first and second magnet insertion holes along an outer circumference, and first and second slits along an inner circumference. The first and second slits have first and second facing portions facing each other. The first facing portion has a first inner end and a first outer end. The second facing portion has a second inner end and a second outer end. An inter-slit portion is provided between the first and second facing portions and is defined by a first straight line connecting the first and second inner ends and a second straight line connecting the first and second outer ends. In a radial direction of the rotor core, a minimum distance D1 from the inner circumference to the slits, a minimum width W1 of the slits, and a length W2 of the inter-slit portion satisfy at least one of D1<W1 and D1<W2.

Abstract: A permanent magnet comprises crystal grains each including a main phase. An average size of the crystal grains is 1.0 ?m or less, and a degree of orientation of easy magnetization axes of the crystal grains to an easy magnetization axis of the magnet is 15% or more and 90% or less. A recoil magnetic permeability is 1.13 or more, a residual magnetization is 0.8 T or more and less than 1.16 T, and an intrinsic coercive force is 850 kA/m or more.

Abstract: A manufacturing method of a core for a rotary electric machine, the method includes inserting a permanent magnet that is not yet magnetized in a magnet insertion hole that is formed in a rotor core; injecting a magnet fixing material in the magnet insertion hole; curing the magnet fixing material by heating the rotor core and the permanent magnet; and magnetizing the permanent magnet before a temperature of the rotor core and the permanent magnet decreases to a normal temperature, after the curing of the magnet fixing material.

Abstract: An electric motor including: a frame; a rotor assembly including a magnet, a bearing assembly, an impeller, and a shaft; and a stator assembly including a stator core and a bobbin. The frame has an inner wall and an outer wall, the outer wall surrounds the inner wall and defines an annular channel between the inner wall and the outer wall, and diffuser vanes extend from the inner wall to the outer wall through the annular channel. The inner wall defines a bore for supporting the rotor assembly, and the outer wall defines a substantially cylindrical outer casing of the motor.

Abstract: A rotary electric machine equipped with a magnetic flux variable mechanism includes a case body, a mover moving upon receipt of centrifugal force, a magnetic flux short circuit member, a cam member, and biasing springs. The cam member includes a cam surface so as to face the mover and make contact with the mover, and the cam member converts a radial movement of the mover received by the cam surface into an axial movement of the magnetic flux short circuit member. The biasing springs give a biasing force to the magnetic flux short circuit member in a direction distanced from an axial end surface of the rotor core, so as to determine a position of the magnetic flux short circuit member along the axial direction in a state where the biasing force is balanced with the centrifugal force applied to the mover via the cam member.

Abstract: Provided is a method for implementing skewing in a hybrid homopolar generator. The method includes aligning slots within an axial front segment of a stator, with corresponding slots within an axial back segment of the stator. The method also includes moving, during assembly, the axial front segment and the axial back segment relative to each other such that slots in the axial front segment and the axial back segment form a pattern.

Abstract: There are disclosed winding configurations for electric machines that employ printed circuit board (PCB) type end winding connections to enable an automatic and faster assembly of the electric machines. The winding configurations provide a compact PCB-type end winding arrangement with an optimal fewer number of turns/bars in the slots of the board to complete the loop of winding connections. The winding configurations have application in three phase or multiple phase inner rotor or outer rotor electric machine topologies.

Abstract: The present disclosure relates to an electric drive motor (101; 201) for a vehicle. The electric drive motor (101; 201) has a stator (103) having a plurality of slots (107); and a rotor (102; 202) having a plurality of poles (106; 206). The poles (106; 206) each have at least a first permanent magnet (104; 204) centred on a d-axis of the pole (106; 206); and a plurality of flux barriers (109; 209) for disrupting at least an n-th order torque harmonic of the electric drive motor (101). Proximal to an outer surface of the rotor (102; 202), a first angular period (x11) between first and secondary flux barriers is defined by the equation (xi1=tao/n1), whereby: (xi1) is the first angular period; (tao) is the pole step; and n1 is an order number of a torque harmonic to be disrupted.

Abstract: A rotor assembly with a rotor hub, a plurality of permanent magnets positioned circumferentially around at least a portion of the rotor hub, and a coating on at least a portion of the plurality of permanent magnets. The coating forming a retaining band that circumferentially extends around the rotor hub and the plurality of permanent magnets. The coating includes a nano-crystalline layer including a metal or metal alloy and defines an average grain size of less than about 50 nanometers (nm).

Abstract: A rotor includes a unitary, single material substrate defining a rotor lamination having pockets defining legs and configured to contain permanent magnets therein to establish a magnetic pole of the rotor. The rotor includes a first region having a predefined magnetic permeability. The rotor includes a second region defined between the legs and an outer periphery of the lamination. The second region has a magnetic permeability less than the first region to reduce torque ripple of a predetermined harmonic order.

Abstract: A rotor includes a first slot, a second slot, a first flux barrier, and a second flux barrier. As viewed in a direction of the rotation axis of a rotor core, the substantially rectangular first and second slots are provided in a V-shape pattern. As viewed in the rotation axis direction of the rotor core, the first flux barrier is provided between first and second contact parts, and protrudes toward the outer circumference side from the outer circumferential short side of each of the first and second slots. As viewed in the rotation axis of the rotor core, an outer circumferential wall of the second flux barrier is continuous with the first contact part, and the second flux barrier protrudes from an inner long side of each of the first and second slots.

Abstract: A rotor for a rotary electric machine, the rotor including a rotor core that has a magnet hole; a permanent magnet inserted into the magnet hole; and an adhesive layer provided between the permanent magnet and a wall surface of the magnet hole and including a plurality of capsule bodies therein, the adhesive layer fixing the permanent magnet to the wall surface of the magnet hole, wherein the adhesive layer is provided only on a wall surface of the magnet hole on a first side, which is one of a wall surface of the magnet hole on an inner side in a radial direction and a wall surface on an outer side in the radial direction.