36results about "Salient poles" patented technology

The present invention discloses a massage device based on a novel linear motor, including a motor end cover, a motor assembly, and a massage assembly, wherein the motor end cover consists of a first end cover and a second end cover, the motor assembly is located between the end covers and includes a magnetic guide core, a holding through cavity is formed in a core of the magnetic guide core, clamping slots are formed in two side walls of the holding through cavity, winding cores are mounted in the clamping slots, winding frames are mounted on the winding cores, a mover bracket is disposed in the holding through cavity, a strong magnet is clamped in the mover bracket with an axial end on which a transmission push rod is disposed, and the massage assembly is connected to the transmission end of the motor assembly.

To provide a silicon steel sheet for a motor of a range hood that improves the problems of the existing motor winding structure, such as high production costs, a tendency to generate vibration noise, and relatively poor magnetic flux stability. [Solution] The range hood motor silicon steel plate (10) includes an outer ring (11), a plurality of first teeth (12), and a plurality of second teeth (13). The plurality of first teeth protrude radially from at least a portion of the inner peripheral surface of the outer ring, and the plurality of second teeth protrude radially from another portion of the inner peripheral surface of the outer ring. The inner peripheral surface of the outer ring includes at least one spaced apart tooth arrangement main edge (111) and at least one tooth arrangement sub-edge (112). By controlling the angles of the main angle (S1) formed by the tooth arrangement main edge and the sub-angle (S2) formed by the tooth arrangement sub-edge, as well as by controlling the dimensions and geometric structure of the first and second teeth, it is possible to significantly reduce the generation of cogging torque and abnormal noise, while also effectively reducing the amount of conductive coil used, thereby lowering production costs and achieving a lighter motor.

An electric machine comprising a first carrier having an array of electromagnetic elements and a second carrier having electromagnetic elements defining magnetic poles, the second carrier being arranged to move relative to the first carrier. An airgap is provided between the first carrier and the second carrier. The electromagnetic elements of the first carrier include posts, with slots between the posts, one or more electric conductors in each slot, the posts of the first carrier having a post height in mm. The first carrier and the second carrier together define a size of the electric machine. The magnetic poles having a pole pitch in mm. The size of the motor, pole pitch and post height are selected to fall within a region in a space defined by size, pole pitch and post height that provides a benefit in terms of force or torque per weight per excitation level.

Electric machine comprising tiltable vanes. The invention relates to an electric machine comprising a stator (2) and a rotor (3) comprising at least one first vane (28) extending from a first face (32) of the rotor towards the stator along a first radial axis (L1), the stator comprising at least one second vane (29) extending from a second face (22) of the stator towards the rotor along a second radial axis (L2), the first and second vanes being rotatable about one of the respective radial axes (L1, L2) between an inclined position in which the first and second vanes form an angle with each other and a non-inclined position in which the first and second vanes are parallel, the inclination between the first and second vanes increasing with the air density when the rotor is in motion. Figure for the abstract: Fig. 4.

The present application relates to the field of air conditioners. Disclosed are a stator assembly (1), a motor (20), a compressor (30) and an air conditioner (40). The stator assembly (1) according to the present application comprises a stator core (11), a plurality of tooth parts (111) arranged at intervals in the circumferential direction being formed on the stator core (11). Yoke parts (112) are formed between every two adjacent tooth parts (111), the tooth parts (111) and the yoke parts (112) jointly defining stator slots (113) used for accommodating a winding. First outer walls (101) protruding outwards in the radial direction are formed on the periphery of the stator core (11), included angles being formed between two ends of each first outer wall (101) and a stator center (105). There are provided a plurality of first outer walls (101), the sum of the included angles between the plurality of first outer walls (101) and the stator center (105) being X1 and satisfying: 180°≤X1≤300°.

The application provides a wedge-shaped tooth variable cross-section winding permanent magnet arc-shaped motor, and belongs to the technical field of motors. r 1, the arc-shaped outer diameter is r 2; each primary tooth adopts a wedge-shaped structure, and the primary tooth gradually increases from the arc-shaped inner diameter to the arc-shaped outer diameter direction, and the cross section of the primary slot at an arbitrary position is rectangular, and the areas of the rectangles are equal or similar; the armature winding adopts a multi-layer conductor structure, and the areas of the cross sections of all the conductors at an arbitrary position are equal. The armature winding adopts an additive manufacturing process and has a variable cross section shape. The primary slot can be internally provided with a cooling pipeline, and the shape of the primary winding can be changed according to the shape of the cooling pipeline. The secondary assembly is composed of a secondary core and a permanent magnet. The structure is beneficial to improving the slot fill factor of the winding, enhancing the winding cooling, and reducing the mass of the primary core, thereby being beneficial to improving the torque density and dynamic performance of the motor.

A rotor includes: an annular rotor core (10) including a plurality of teeth (20) protruding toward a radially outer side and arranged in a circumferential direction, and a slot (30) formed between the teeth in the circumferential direction; a field winding (40) wound around the teeth; an insulating member (70) disposed between a wall surface (30a) of the slot and the field winding to extend along the wall surface of the slot; and a supply portion (2b) including a hole for supplying a coolant between the insulating member and the wall surface of the slot from a radially inner side of the rotor core.

The present invention provides an axial flux motor, which includes a stator assembly (10) and rotor assemblies (20) located at both ends of the stator assembly (10), the stator assembly (10) including a stator frame (11) and a plurality of stator cores (12), the stator frame (11) including a bearing stand (111) and a plurality of spokes (113) spaced apart from each other on the bearing stand (111), each spoke (113) including a pair of opposing main surfaces (1133) and a plurality of side edges (1134) connecting the pair of main surfaces (1133), the main surfaces (1133) being perpendicular to the axis of the axial flux motor, and the stator core (12) being fixed between the plurality of spokes (1113).

An iron core used in an axial gap type rotating electric machine, the iron core comprising: an annular plate-shaped yoke part; and a plurality of columnar tooth portions disposed at intervals in the circumferential direction of the yoke portion, the yoke portion having: an outer circumferential surface; an inner peripheral surface; a planar first surface connecting the outer peripheral surface and the inner peripheral surface; and a plurality of recessed portions connected to the first surface, each of the plurality of tooth portions having an outer peripheral surface protruding in the axial direction of the yoke portion with respect to the first surface, the plurality of recessed portions being connected to at least a portion of the outer peripheral surface of each of the plurality of tooth portions in the circumferential direction, and each of the plurality of tooth portions having an outer peripheral surface protruding in the axial direction of the yoke portion with respect to the first surface. The shortest distance between at least one of the outer peripheral edge of the first surface and the inner peripheral edge of the first surface and the outer peripheral surface of each of the plurality of tooth portions is all less than or equal to 4 mm, and the yoke portion and the plurality of tooth portions are configured from an integrally molded powder compact.

A rotor body for an electric machine rotor is described, wherein the rotor body comprises a base body having a central opening for receiving a rotor shaft. The base body has a plurality of contact surfaces arranged uniformly around the central opening in the circumferential direction. The rotor body comprises a plurality of pole bodies arranged on the corresponding plurality of contact surfaces of the base body and connected to the base body, such that the base body and the plurality of pole bodies form a plurality of salient poles for arranging a corresponding plurality of winding elements of the rotor.

A modular stator assembly for an electric machine comprises a plurality of stator pole modules distributed circumferentially, each module including at least one press-formed phase coil. The machine includes a rotor assembly, which may comprise two or more rotors, having permanent magnets. These magnets are positioned to substantially surround each stator pole, with their magnetic fields oriented either in-plane or through-plane. Energizing a phase coil generates a magnetic field, creating a complete magnetic circuit that flows from the stator poles through the surrounding permanent magnets and, optionally, the back iron. This interaction between the stator's magnetic field and the permanent magnets produces torque, causing rotation of the rotor assembly relative to the stator assembly.

A magnetic core includes a core back portion and a tooth portion, and is used in a rotating electrical machine. The core back portion has two end surfaces, a first of which is oriented in an axial direction extending along a rotational axis of the rotating electrical machine, and a second of which is oriented in a direction opposite to the axial direction when the magnetic core is mounted in the rotating electrical machine, and two side surfaces that are adjacent to each other in a circumferential direction about the rotational axis when the magnetic core is mounted in the rotating electrical machine. The core back portion has a shape such that, with respect to four combinations of surfaces, a first of which is selected from the two end surfaces and a second of which is selected from the two side surfaces, in at least one of the four combinations, the end surface and the side surface are joined with a notch surface therebetween.

An axial flux motor for an automobile includes a stator assembly and a rotor assembly. The rotor assembly includes a plurality of laminated blocks arranged in a ring, and a plurality of electrically conductive wedges, one between each pair of adjacent laminated blocks, the plurality of laminated blocks and the plurality of electrically conductive wedges defining a rotor core disk having an inner diameter and an outer diameter and opposite axial faces, and a plurality of permanent magnets attached to one of the opposite axial faces of the rotor core disk.

A magnetic field-generating part (6, 10) of an electric machine (1), such as a stator (6) or a rotor (10), is disclosed. It comprises a laminated core (7, 12), a winding head end plate (16, 16a, 16b), and wire windings (9, 14). The winding head end plate (16, 16a, 16b) has a star shape with a central opening (E) and radially extending arms (17), each having lateral boundary surfaces (G1, G2). Outer circumferential side walls (18) are provided on the arms (17), projecting from an end face (C1, C2) of the laminated core (7, 12). Axially below the wire windings (9, 14) the winding head end plate (16, 16a, 16b) has free spaces (J) adjacent to the lamella package (7, 12), each of which is spaced apart from an outer circumference of the winding head end plate (16, 16a, 16b) and leads continuously from a first lateral boundary surface (G1) to a second lateral boundary surface (G2) of a corresponding arm (17).Furthermore, an electric machine (1) with such a stator (6) and / or rotor (10) and a vehicle (20) with such an electric machine (1) are disclosed.

The application discloses a motor, a compressor and a refrigeration device, wherein the motor comprises a stator and a rotor, the stator comprises a plurality of stator teeth which are arranged at intervals, and the stator teeth are provided with tooth shoes at one end of the shaft center of the stator; the rotor is provided with a plurality of mounting grooves, the mounting grooves are arranged at intervals along the circumference of the rotor, permanent magnets are mounted in the mounting grooves, the opposite ends of the mounting grooves are provided with magnetic barrier grooves, the two magnetic barrier grooves extend towards the d-axis, the included angle between the two ends of the two magnetic barrier grooves which extend towards each other and the line connecting the center of the rotor is θ1, the included angle between the opposite ends of the tooth shoes and the line connecting the center of the rotor is θ2, and |θ1-θ2|<a preset angle. The technical scheme aims to improve the utilization rate of the magnets.

The invention discloses a vector reluctance gear and a control method thereof, and relates to the technical field of transmission devices.The vector reluctance gear comprises an outer rotor assembly which comprises a plurality of electromagnetic coils, is distributed according to a circumferential array and is used for generating a changing magnetic field; the inner rotor assembly comprises an inner rotor iron core which interacts with the magnetic field of the outer rotor assembly to generate torque; the magnetic field adjusting module is arranged between the electromagnetic coil and the inner rotor iron core and is used for adjusting a magnetic field; the main shaft is matched with the inner rotor assembly and serves as an input or output shaft of the whole system; the detection module is electrically connected to the outer rotor assembly and the inner rotor assembly and is used for feeding back the positions and the magnetic field intensity of the outer rotor and the inner rotor in real time and outputting a detection signal; and the control module is used for adjusting the current amplitude and phase of the electromagnetic coil according to the signal fed back by the power input unit and the detection signal, and dynamically changing the magnetic field direction and the magnetic resistance distribution. The transmission has the effects of dynamically adjusting the transmission ratio, being free of mechanical contact, and being efficient and energy-saving.

Method and system for automatically winding a rotor body with salient poles The invention relates to a method for winding (100) a rotor body comprising a central portion and a plurality of branches extending radially from the central portion, the winding method (100) using an automatic winding system comprising a needle capable of winding a conductive wire around a branch along a winding path passing through a winding notch between a first point located at a first axial end of the branch and a second point located at a second axial end of the branch, the winding method (100) comprising steps of: - assigning (110) a target position to the second point, - determining (120) an axial deformation of the branch, - correcting (130) the target position as a function of the axial deformation, resulting in a corrected target position,and- moving (140) the needle from the first point to the second point corresponding to the corrected target position. (Figure 6),

A 6-pole 7-slot 14-hook brush motor disclosed by the present invention comprises an armature part, a magnet part, a casing and a brush carrier, magnets are installed in the casing through a magnet holder, the armature part is installed in a casing assembly, and the magnet part surrounds the periphery of the armature part. And an armature framework of the armature part is provided with seven winding grooves and adopts a 14-hook commutator. The invention provides a 6-pole 7-slot 14-hook brush motor. The performance can be improved by about 20% on the basis of the size of an original motor. And the motor is higher in performance and has more competitive advantages when the size is the same. Due to the fact that the six-pole magnet is adopted, a magnetic circuit is shortened in a magnetic field, the thickness of the magnet is smaller than that of a four-pole magnet, needed magnetic materials are few, and cost reduction is facilitated.

The present disclosure provides an axial field motor. The axial field motor includes a stator assembly (10) and rotor assemblies (20) located at two ends of the stator assembly (10), where the stator assembly (10) includes a stator frame (11) and a plurality of stator cores (12), the stator frame (11) includes a bearing seat (111) and a plurality of spokes (113) arranged on the bearing seat (111) at intervals, each of the spokes (113) includes a pair of main surfaces (1133) arranged opposite to each other and a plurality of side edges (1134) connecting the pair of main surfaces (1133), the main surfaces (1133) are perpendicular to an axis of the axial field motor, and the stator cores (12) are fixed between the plurality of spokes (113).

A rotating electrical machine (1) according to the present invention is provided with: a rotor (20) having a first permanent magnet (22A) and a second permanent magnet (22B) on each pole; and a stator (30) having a stator core (31) and a winding (32), the stator (30) being disposed with a gap from the rotor (20). The first permanent magnet (22A) is disposed at a position advanced in the positive rotation direction of the rotor (20) with respect to the d-axis (d0) of the rotor (20), and the second permanent magnet (22B) is disposed at a delayed position. Furthermore, one of the first and second permanent magnets (22A, 22B) is a high-heat-generation magnet and the other is a low-heat-generation magnet on the basis of the difference in the heat generation level between the first permanent magnet (22A) and the second permanent magnet (22B) which generate heat according to the operation of the rotating electric machine (1), and in the rotor (20), the heat dissipation performance of the high-heat-generation magnet is greater than the heat dissipation performance of the low-heat-generation magnet, and the heat dissipation performance of the low-heat-generation magnet is greater than the heat dissipation performance of the high-heat-generation magnet. And is cooled by heat transfer via the fluid (50).

An axial flux switched reluctance motor and / or generator, and controls are provided. It includes a stator, which includes a front surface and a rear surface, and sidewalls that extend from the front surface to the rear surface. The stator includes salient stator poles positioned on the front surface. Each one of the salient stator poles including: a bobbin protruding out from the front surface in a direction along an axis of the bobbin that is perpendicular to the front surface; the bobbin comprising a bobbin front surface that is parallel to the front surface of the stator; and a coil of electrically insulated wire wound around the bobbin. A rotor includes a front rotor surface and an opposite facing rear rotor surface, and further includes a plurality of rotor poles. The rotor is affixed to a shaft and rotates about an axis of rotation that is aligned with the shaft.

The invention discloses an iron core unit, a primary iron core, a primary assembly, a motor, an electric drive device and a vehicle. Each iron core unit comprises a first side and a second side which are opposite to each other in the axial direction of the iron core unit, a first blind groove is formed in the first side of each iron core unit, and each first blind groove is sunken from the first side of the corresponding iron core unit to the second side of the corresponding iron core unit; and / or, a second blind groove is formed in the second side of the iron core unit, and the second blind groove is sunken from the second side of the iron core unit to the first side of the iron core unit. In the application, the first blind slot and the second blind slot can break a closed loop formed by eddy current at different heights of the axial plane, so that eddy current loss can be reduced, energy consumption of the motor is reduced, and the working efficiency of the motor is improved; moreover, the eddy current loss is reduced, and the iron core units can be prevented from being damaged due to overhigh temperature rise of the iron core units, so that the service life of the iron core units can be prolonged, and the working stability and reliability of the motor are improved.

Method and system for automatic winding of a salient-pole rotor body. The invention relates to a method for winding (100) a rotor body comprising a central part and several arms extending radially from the central part. The winding method (100) uses an automatic winding system comprising a needle adapted to wind a conductive wire around an arm along a winding path passing through a winding slot between a first point located at a first axial end of the arm and a second point located at a second axial end of the arm. The winding method (100) comprises the steps of: - assigning (110) a target position to the second point, - determining (120) an axial deformation of the arm, - correcting (130) the target position as a function of the axial deformation, resulting in a corrected target position.and- displacement (140) of the needle from the first point to the second point corresponding to the corrected target position. (Figure 6),

A rotary electric machine (1) is provided with: a rotor (20) that has, for each pole, a first permanent magnet (22A) and a second permanent magnet (22B); and a stator (30) that has a stator core (31) and a winding (32) and is arranged relative to the rotor (20) with a gap therebetween. The first permanent magnets (22A) are disposed at positions advanced in the forward rotation direction of the rotor (20) with respect to a d-axis (d0) of the rotor (20), and the second permanent magnets (22B) are disposed at delayed positions. On the basis of the difference in heat generation level between the first permanent magnets (22A) and the second permanent magnets (22B) that generate heat in accordance with the operation of the rotary electric machine (1), one group of the magnets among the first and second permanent magnets (22A, 22B) is taken as high-heat-generation magnets, and the other as low-heat-generation magnets, and the rotor (20) is cooled by heat transfer through a fluid (50) by making the heat dissipation from the high-heat-generation magnets larger than the heat dissipation from the low-heat-generation magnet.

An electrical machine comprising at least one component (3) forming either a stator (4) or a rotor (5), which component has at least two teeth (15) each extending along a radial direction (12) of the electrical machine (2), each having a winding (16) wound around said teeth, wherein at least one of the windings (16) comprises a plurality of winding layer groups (27) arranged one above the other with respect to the radial direction (12), wherein each of the winding layer groups (27) comprises one or more winding layers (28) arranged one above the other, wherein the winding layer groups (27) are each formed from a separate and electrically conductive conductor wire (20), wherein the electrical machine (2) has a cooling system (21) by means of which a cooling fluid can be guided through a hollow cross-section of at least two conductor wires (20) in such a way that at least two of the winding layer groups (27) are fluidically connected in parallel.

To provide a motor in which an excessive load applied to a coil is suppressed.SOLUTION: The motor includes a stator (20) having a core part (42) around which a coil (22) is wound. The core part (42) has first surfaces (44, 45, 64) oriented in the direction of a rotation axis of the motor, and second surfaces (46, 47, 66, 67) oriented in a circumferential direction of the motor and continuous with the first surfaces (44, 45, 64). At a boundary between the first surfaces (44, 45, 64) and the second surfaces (46, 47, 66, 67), R parts (49, 71, 72) are formed which bulge toward the coil (22) side and come into contact with the coil (22).SELECTED DRAWING: Figure 5

An induction motor and a compressor equipped therewith are disclosed. The induction motor comprises a stator and a rotor. The rotor may be coupled to a crankshaft. The rotor may be rotatably provided on the inside of the stator with a gap between the stator and the rotor. The inner circumferential surface of the stator may include a first inner circumferential surface and a second inner circumferential surface. Here, M is a natural number greater than or equal to 2. The second inner circumferential surface may be formed to be recessed from the first inner circumferential surface toward the radial outside of a crankshaft. The first inner circumferential surface has a first inner diameter. The second inner circumferential surface has a second inner diameter that is larger than the first inner diameter. Accordingly, the multi-layered structure of the stator can avoid interference between the stator and the rotor, thereby enhancing structural stability.

The invention provides a magnetic steel structure with non-uniform thickness, a permanent magnet synchronous motor and an electric vehicle, relates to the technical field of motors, and solves the problems that the torque pulsation problem of magnetic steel with uniform thickness is relatively prominent and the operation efficiency of the motor is low. The magnetic steel structure with the uneven thickness comprises magnetic steel, the magnetic steel is provided with an outer surface and an inner surface which are oppositely arranged and fixedly connected, the outer surface is fixedly connected with the inner side of a rotor, and the outer surface is a plane or a cambered surface; and the inner surface is a cambered surface, and the inner surface protrudes towards the direction of the stator, so that the thickness of the magnetic steel is non-uniform, and a non-uniform air gap is formed between the stator and the rotor. When the stator winding is electrified, the generated magnetic field interacts with the magnetic steel with non-uniform thickness on the rotor, due to non-uniform air gaps, the distribution and intensity of the magnetic field at different positions are changed, and the non-uniform magnetic field generates more optimized electromagnetic force to drive the rotor to rotate, so that the torque pulsation can be effectively reduced, and the operation efficiency of the motor under different working conditions is improved.

Systems and methods use bodies with multiple teeth that follow a magnetic field in the body. The teeth have adjacent gaps while the body remains a continuous rigid structure. The gaps may be any shape or size formed by removal from the parent body while preserving a continuous joining portion of the body. Cutting with electrical discharge wires or lasers may be used for the gaps. The body may take on any shape or size, including electromagnetic pump stator configurations. Recesses, including ledges, passages, toughs, bores, rounds, or flat faces may be formed with the gaps. Adjacent recesses between multiple bodies may form other functional passages, such as an angular or perimeter passage for driving coils in an electromagnetic pump. Insulators may be placed into the gaps. Example systems and methods require fewer additional joining or supporting structures due to the teeth already being connected from fabrication.

Magnetic energy unipolar motor characterized in that a) a plurality (at least 1) of U-cores, made of electrical sheet or similar, are grouped with their base yoke (1c) in a star shape around a drive shaft (2) and attached to a bearing plate (3), b) all outer limbs (1b) of all U-cores are connected by a common ring body (5) which can absorb the individual magnetic fluxes of all outer limbs in order to feed them to a first air gap (6b) or, in the opposite direction, distribute the incoming flux to the individual outer limbs, c) all inner limbs (1a) of all U-cores are connected by a common ring body (8) which can absorb the individual magnetic fluxes of all inner limbs in order to feed them to a second air gap (6a) or, in the opposite direction, distribute the incoming flux to the individual inner limbs, d) between the first air gap (6b) and the second air gap (6a) the actual rotor (7) is arranged as a ring rotor, which transfers the magnetic flux from the ring body (5) to the ring body (8) or vice versa from the ring body (8) to the ring body (5), e) an electric coil (4), designed as a toroidal coil, is provided, which encloses all inner limbs (1a) of the U-cores (1) together and thereby ensures that the same magnetic flux is generated in all cores, f) all surfaces of the ring body (5), the ring body (8), and the ring rotor (7) facing the air gaps (6b) and (6a) each have a sawtooth profile with concave or convex ramps, with all surfaces facing outwards of the machine having convex tooth ramps and all surfaces facing towards the centre of the machine having concave tooth ramps, g) depending on the desired direction of rotation of the machine, the radii (R1) and (R2) relating to the outer air gap (6b) have their starting point at a distance (x) from the left or right side of the machine center (0), and the radii (R3) and (R4) relating to the inner air gap (6a) have their starting point at a distance (x) from the other or opposite side of the machine center (0), whereby all radii can also be considered as tangents to the inner circular line with radius (x), h) the number of teeth (pole pitches) on the ring body (5) and (8) is virtually arbitrary, whereby the teeth (pole pitches) of both elements should ideally be in the same radial alignment, i.e. their number should be the same, i) the number of teeth (pole pitches) on the ring rotor (7) advantageously differs significantly from the number of teeth on the ring body (5) and (8), whereby here too the outer teeth and inner teeth should be in the same radial alignment, i.e. their number should be the same, j) any combination of all pole pitches is possible and permissible, ie each of the four surfaces facing the air gaps can have its own number of teeth or pole pitch, k) there is a rotor disc (9) to which the rotor ring (7) is attached and which is itself rigidly connected to the drive shaft (2), I) in only one of the two air gaps (6a) or (6b) there are poles or sawtooth structures on the adjacent surfaces of ring bodies (5) or (8) and rotor ring (7), which contribute to a torque, wherein the other air gap itself is continuously minimized, similar to (6c) or (6d).