68results about "Salient poles" patented technology

Electric motor device (10) for driving a sunroof (2) or a roller blind in a vehicle (100), comprising: a rotor device (20) comprising an at least partially cylindrical outer surface (21); a stator device (30) having a core (31) including a plurality of stator teeth (32) projecting toward the rotor device (20), the stator teeth (32) comprising a tooth root (33) connected to a stator ring (34) and a tooth tip (35) having a wing-shaped tooth shoulder (36) on each side in a circumferential direction, the wing-shaped tooth shoulder (36) having a tip (37) formed at an end portion (47) of the respective wing-shaped tooth shoulder (36) in the circumferential direction; wherein the tooth tip (35) includes a surface (39) facing the at least partially cylindrical outer surface (21) of the rotor device (20) to form a gap (40) therebetween; wherein the surface (39) comprises: - a hollow cylindrical surface section (41) having a constant gap distance (g1) in the direction of the at least partially cylindrical outer surface (21) of the rotor device (20) in the circumferential direction, and - each having an inclined surface portion (42) having an increasing gap distance (g2) with respect to the at least partially cylindrical outer surface (42) of the rotor device (20) in the circumferential direction towards the respective tip (37) formed by the end portion in the circumferential direction; wherein the hollow cylindrical surface portion (41) includes a first radius (r1) with respect to a center axis (C) of the rotor device, and the tip (37) formed at the end portion in the circumferential direction has a second radius (r2) with respect to the center axis (C) of the rotor device (20); wherein a first ratio (r2 / r1) between the second radius (r2) and the first radius (r1) is 1.02 or more and 1.08 or less.

The invention discloses an axial hybrid excitation doubly salient linear motor which comprises a primary, a secondary, an air gap between the primary and the secondary, permanent magnets, a primary pole and a secondary pole which adopt salient pole structures, an excitation winding and a three-phase armature winding are wound on primary teeth, the tooth pitch of the secondary teeth is larger than that of the primary teeth, the permanent magnets and the secondary pole are equal in length, and the length of the secondary pole can be larger than that of the primary. Magnetic fields generated by the permanent magnets and the electro-magnetic field form a main magnetic field of the motor. Exciting winding coils are wound on the primary teeth, and magnetic flux paths of all phases are the same. When the axial hybrid excitation doubly salient linear motor works, output torque pulsation can be reduced, the motor is novel in structure, reliable in performance and easy to control, and the axial hybrid excitation doubly salient linear motor is suitable for medium and small power generation or electric occasions such as the packaging industry, the numerical control machine tool field and a cordless elevator as a traditional radial linear motor. Therefore, the axial hybrid excitation doubly salient linear motor has a great application market.

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.

Embodiments of the present application provide a combined lamination, an iron core, and a motor. The combined lamination comprises: a yoke part, and a plurality of tooth bodies and tooth shoes, and the yoke part is configured to be annular; the tooth bodies are arranged at intervals in the circumferential direction of the inner side or the outer side of the yoke part, and one end of each tooth body is connected to the yoke part; and the other end of each tooth body is connected to a corresponding tooth shoe, wherein the tooth bodies and the yoke part are both made of a silicon steel material, and the tooth shoes are made of an amorphous alloy material. The combined lamination in the embodiments of the present application comprises the silicon steel material and the amorphous alloy material, and the amorphous alloy material is configured to be prepared into the tooth shoes of the lamination, so that the material exerts the advantage of involving less hysteresis and eddy current losses in a high-frequency pulsating magnetic field; and aiming at the magnetic field environment in the motor, the advantages of the silicon steel material and the amorphous alloy material are fully utilized, reducing the hysteresis and eddy current losses of the motor, and thus improving the motor efficiency.

The disclosed apparatus, system, and techniques described herein allow pole retention hardware of the electric motor to also function as a cooling manifold for removing heat generated by the electrical coils. A pole retainer apparatus can include a pole retainer for retaining a pole to a hub. The pole retainer can include a proximal end mounted on the hub and a distal end. The pole retainer can include a channel extending through the pole retainer from the proximal end of the pole retainer mounted on the hub to the distal end of the pole retainer. The apparatus can include a mount located at the distal end of the pole retainer and configured to retain the pole on the hub. The apparatus can include a fluid transfer duct connected to the mount. The cooling system can be employed on TORUS Axial Flux Permanent Magnet motors, and various other motor designs.

The present application provides a rotor, a stator, a motor and a household appliance. A rotor (100) is used for a motor. The motor comprises a stator (200). The stator (200) has an inner peripheral wall (210) arranged around the rotor (100). The rotor (100) is disposed in the stator (200), and the rotor (100) can rotate around a rotation axis. The rotor (100) comprises first iron core units (110) and second iron core units (120). Each first iron core unit (110) can define a first air gap (130) together with the inner peripheral wall (210), and the first air gap (130) has a first magnetic flux density curve; and each second iron core unit (120) can define a second air gap (140) together with the inner peripheral wall (210), and the second air gap (140) has a second magnetic flux density curve, wherein the first magnetic flux density curve does not coincide with the second magnetic flux density curve.

Improves the magnetic properties of the laminated core. [Solution] The laminated core is a core block that is formed by connecting multiple pieces in a ring shape, and comprises multiple electromagnetic steel sheet pieces stacked on top of each other, and adhesive portions that are provided between adjacent electromagnetic steel sheet pieces in the stacking direction and that bond the electromagnetic steel sheet pieces together, and the adhesive area ratio of the electromagnetic steel sheet pieces by the adhesive portions is 1% or more and 60% or less.

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.

The electric motor comprises: a rotor having 10×N magnetic poles (N is an integer greater than or equal to 1); and a stator having 9×N teeth. The central tooth (311) comprises a first main body (311a) and a first tooth tip (311b). The downstream tooth (312) comprises a second main body (312a) and a second tooth tip (312b). When the maximum length of the first upstream portion (321a) of the first tooth tip (311b) in the first upstream radial direction is TCR, and the maximum length of the second upstream portion (322a) of the second tooth tip (312b) in the second upstream radial direction is TBR, the electric motor (1) satisfies TCR>TBR.

The invention relates to a stator for an electric machine comprising a stator yoke (14) having a circular surface (16) and a plurality of stator teeth standing on the circular surface (16), each of the stator teeth (18) having, on the one hand, a stack (20) of plates made of grain-oriented steel (32) having a first end (22) connected to the yoke (14) and an opposite second free end (24) and, on the other hand, an electrical wire winding (25), each of the plates (32) extending in a direction normal to the circular surface (16) while the grains are oriented parallel to the normal direction. Each of the plates (32) is cut into a T-shape forming two outlets (38, 40) in such a way that the second free end (24) has two opposed free wings (42, 44); and each of the plates (32) is treated so as to disorient the grains at their two outlets (38, 40).

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 stepper motor comprising a stator (1) provided with a plurality of first teeth (10), a rotor (2) mounted to pivot in the stator (1) and provided with a plurality of second teeth (20), and a plurality of electromagnetic windings (30) for defining stator poles, each tooth (10, 20) having two flanks (11, 21) converging towards each other towards an apex (12, 22) of each tooth (10, 20). Each flank (11, 21) has a gear tooth profile. Method of producing such a motor. FIGURE OF THE ABSTRACT: Fig.2

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.

The invention belongs to the technical field of motors, and particularly relates to a high-power-density motor coil and a manufacturing method and an assembling method thereof. On the premise of meeting the performance requirement of a high-power torque density motor, the stator has excellent manufacturability, the external heat dissipation effect of the winding can be greatly improved, the effective use area in the slot is increased, and the performance of the motor is improved. Comprising a non-wire outlet end, an iron core groove inner coil part and a wire outlet end, the coil is composed of a flat wire, the cross section of a flat wire enameled wire is a rectangle with the length-width ratio not equal to 1, and the flat wire enameled wire is bent in the wide ridge direction instead of the narrow ridge direction.

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.

The invention provides a motor, a power assembly and an electric vehicle. A stator of the motor comprises a plurality of stator cores, a plurality of winding slots of the stator penetrate through the stator cores, and each winding slot is used for accommodating a plurality of wires. The plurality of stator cores includes a first core and a second core. One end of each wire is exposed out of one end face of the second iron core. The first runner of the first iron core penetrates through the first iron core in the axial direction of the motor. And one end surface of the second iron core covers the outlet of the first flow channel along the axial direction of the motor. An outlet of the second runner penetrates through one end face of the second iron core, and the second runner is used for communicating an outlet of the first runner with one end face of the second iron core. Outlets of the second flow channels are distributed in the peripheral side of one winding groove. The distance between the outlet of the second flow channel and one winding groove is larger than the distance between the first flow channel and one winding groove in the radial direction of the motor. Through cooperation of different runners in the stator, the risk that the runners are blocked by insulating paint can be reduced under the condition that the cooling effect of the motor is ensured.

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.

Magnetic core for a rotating electric machine, comprising: a core back section; and a tooth section comprising a tooth body section extending from the core back section in a first direction, and a distal tooth end section arranged at a distal end of the tooth body section in the first direction, the position of the geometric center of the tooth section being the same as the position of the geometric center of the core back section in a second direction parallel to an axis of rotation of the rotating electric machine in a state in which the magnetic core is mounted in the rotating electric machine, and if the orthogonal projection of the first direction onto a plane orthogonal to the second direction is defined as a third direction, and the line connecting the geometric centers of the cross-sections of the tooth body section perpendicular to the third direction,defined as a first line, the position of the first line at the distal end of the main body section of the tooth differs in the second direction from the position of the first line at an end of the main body section of the tooth opposite the distal end.

In a brushless DC motor (1), the number of poles of a magnet is greater than or equal to four and greater than the number of slots, and a motor stator (4) of the brushless DC motor (1) has a two-split core structure. A teeth core (6) of the motor stator (4) is provided with narrow auxiliary pole teeth (63) disposed between main pole teeth (62), around which a coil is wound. Imbalance of the circumferential-direction magnetic flux distribution is eliminated, and cogging torque is reduced. The magnetic flux generated from the coils (5(U), 5(V), 5(W)) of each phase wound around the main pole teeth (62) and the magnetic flux of the magnet flow efficiently to the auxiliary pole teeth (63) via a cylindrical section (61) of the teeth core (6), and thus the electromotive force can be increased.

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),