23results about "Salient poles" patented technology

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.

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 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.

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.

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 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.

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.

The invention discloses an induction motor and a compressor having the same. The induction motor includes a stator and a rotor. The rotor may be coupled with a crankshaft. A gap can be reserved between the rotor and the stator, and the rotor is rotatably arranged on the inner side of the stator. The inner circumferential surface of the stator may include first to second inner circumferential surfaces. Here, M is a natural number of 2 or more. The second inner circumferential surface may be formed so as to be recessed from the first inner circumferential surface toward the outside in the radial direction of the crankshaft. The first inner circumferential surface has a first inner diameter. The second inner peripheral surface has a second inner diameter larger than the first inner diameter. Therefore, the multi-section laminated structure of the stator can improve the structural stability by avoiding the interference between the stator and the rotor.

The invention relates to a stator or rotor tooth (10) with the features of claim 1, a rotor (3) or stator (5) with the features of claim 5, an axial flux machine (2) with the features of claim 6 and a vehicle (1) with the features of claim 7.

This application discloses a motor, a compressor, and a cooling device, the motor comprising a stator and a rotor, the stator comprising a plurality of spaced stator teeth, the ends of the stator teeth toward the axis of the stator having tooth shoes, a plurality of mounting grooves provided in the rotor, the plurality of mounting grooves spaced apart along the circumferential direction of the rotor, permanent magnets mounted in the mounting grooves, magnetic barrier grooves provided at opposite ends of the mounting grooves, both magnetic barrier grooves extending toward the d-axis, the angle between the connection line between each of the opposing ends of the two magnetic barrier grooves and the center of the rotor being θ1, the angle between the connection line between each of the opposing ends of the tooth shoe and the center of the rotor being θ2, and |θ1-θ2| < a predetermined angle.

An apparatus includes at least one axial flux electric machine (26A). Said electric machine includes a plurality of stators (32A) and a rotating assembly (30A) including a plurality of axially disposed rotors (36A) on a shaft (34A) being rotatable about an axis (38A). Each of said rotors (36A) includes a plurality of rotor magnet poles (44). Said stators (32A) are axially interspersed with the rotors (36A) along the axis (34A). Each of said stators (32A) includes a plurality of stator magnet poles (64). Said stator magnet poles of each of the stators (32A) have a non-annular or non-axisymmetric configuration, thus are asymmetrically arranged.

Disclosed is a linear motor for a small household appliance, comprising a housing and an iron core. Upper and lower inner side walls of the iron core are each provided with at least one salient pole, and the salient poles on the upper and lower sides are offset from each other. Coil windings are wound on the salient poles. A guide base is disposed at the bottom of the inside of the housing. A magnet support is slidably disposed in the housing, and a drive head is disposed on the magnet support at a position adjacent to an open end of the housing. A magnet assembly is slidably disposed in the magnet support. The magnet assembly is provided with at least one steel magnet. Upper and lower sides of the magnet support are each provided with at least one window, the positions of the windows being opposite the positions of the salient poles. The guide base is provided with a switching slot, the magnet assembly is provided with a pin, and the pin is movably inserted inside the switching slot, so that when the coil windings are energized to generate a magnetic field identical to that of the steel magnet, the magnet support drives the magnet assembly and the drive head to slide left and right, while the magnet assembly slides up and down relative to the magnet support, causing the steel magnet to be inserted into a corresponding window. The output smoothness of the linear motor is improved, production costs are reduced, and the motion inertia of the entire movable part is reduced.