229results about "Synchronous machine details" patented technology

The application relates to the technical field of permanent magnet motors, and discloses a heat dissipation type permanent magnet motor which comprises a machine body, a cooling cover for heat dissipation of the permanent magnet motor is fixedly connected to the outside of the machine body, and a purification shell for processing flowing air is fixedly connected to the outside of the cooling cover. The heat generated by the machine body during operation can be directly conducted and dissipated to air through the heat conduction strip. The memory metal strip senses the emergency overheating of the machine body during operation, so that the bending plate moves to trigger the contact to complete the temperature sensing of the machine body. The pulp plate runs to guide the external air into the cooling channel inside the heat conduction strip to perform air cooling heat dissipation, so that the permanent magnet motor adopts the combination mode of the heat dissipation fin and the emergency air cooling heat dissipation, the heat dissipation effect of the permanent magnet motor is improved, the filter plate filters and removes dust in the flowing air, the screw rod moves to make the nozzle move to perform high-pressure air blowing on the dust filtered and gathered in the filter plate, and the air dust filtered by the air cooling heat dissipation of the permanent magnet motor is automatically cleaned.

A rotor has at least one first rotor body with a first group of permanent magnets and a second rotor body with a second group of permanent magnets. The first and the second rotor bodies are rotated relative to each other about a common rotational axis against the effect of a first torsional stiffness by a mechanical field-attenuation mechanism. The field-attenuation mechanism includes a lever element. The first rotor body is coupled to a first lever section, and the second rotor body is coupled to a second lever section of the lever element. The first and second lever sections are arranged on opposite sides of the lever such that by tilting the lever element, the first and the second rotor bodies are rotated relative to each other in a targeted manner to produce a desired adjustment of the mechanical field-attenuation mechanism.

The invention discloses a rotor and a synchronous reluctance motor with the same. In the invention, the rotor has an even number of magnetic barrier structures, each magnetic barrier structure comprises a plurality of arc-shaped magnetic barrier layers, the plurality of arc-shaped magnetic barrier layers of each magnetic barrier structure have the same symmetry axis, each arc-shaped magnetic barrier layer comprises five sections of magnetic barriers, two sections of outermost magnetic barriers are mutually symmetrical about the symmetry axis, and two sections of middle magnetic barriers are mutually symmetrical about the symmetry axis. A section of the innermost magnetic barrier is symmetrical about the symmetry axis, so that the reluctance torque of the motor can be fully utilized to improve the output performance of the motor by means of the design of the multiple layers of magnetic barriers with the same symmetry axis. In addition, the two outermost magnetic barriers are not filled with magnetic substances, so that the magnetic substances are far away from the stator winding to reduce the risk of demagnetization of the magnetic substances.

A motor and a cleaner comprising the same. The motor comprises a stator including a stator core; a rotating shaft arrangeable inside the stator; a rotor rotatable about the rotating shaft by electromagnetically interacting with the stator while the rotating shaft is arranged inside the stator; a housing to accommodate the stator and the rotor; and a bearing coupleable to the housing such that while the bearing is coupled to the housing, the bearing allows the stator and the rotor to be stably coupled to each other. While the stator and the rotor are accommodated in the housing, a center of the stator core and a center of the rotor along an extension direction of the rotating shaft is arranged at different positions from each other with respect to the extension direction of the rotating shaft.

The invention discloses a hybrid magnetic barrier design method for improving the average torque of a permanent magnet generator, the motor type is a double permanent magnet vernier motor, a stator and a rotor are provided with permanent magnets, the stator is wound with an armature winding, and an air gap magnetic field is composed of a stator permanent magnet magnetic field, a rotor permanent magnet magnetic field and an armature magnetic field. The average torque is derived from the interaction of an armature magnetic field and stator and rotor permanent magnetic fields. The stator is composed of six E-shaped module units in space, non-air-gap magnetic barriers exist between the module units, air-gap magnetic barriers are added to the two sides of a permanent magnet of the stator and the two sides of a permanent magnet of the rotor respectively, and the average torque is improved by improving the working wave content of an armature magnetic field and the working wave content of a permanent magnet magnetic field through the two types of magnetic barrier structures respectively. The hybrid magnetic barrier is simple in structure, the average torque of the permanent magnet vernier motor can be improved by more than 30%, and meanwhile, the sine property of no-load back electromotive force is improved.

The coronal brushless motor includes: a stator; the rotor comprises a cylindrical core body part, the cylindrical core body part comprises a plurality of first extension parts extending from a first end part of the cylindrical core body part and a plurality of second extension parts extending from a second end part of the cylindrical core body part; and a static wire disposed around the cylindrical core member to magnetize the cylindrical core member to generate a magnetic flux in an axial direction of the cylindrical core member; wherein the plurality of first extension portions and the plurality of second extension portions are configured to separate and guide the magnetic flux when the cylindrical core member is magnetized by the static coil wires, and to change a direction of the magnetic flux from an axial direction to a direction different from the axial direction.

The application provides a kind of stator double permanent magnet multi-tooth structure magnetic flux switching motor and its working method, belongs to permanent magnet variable reluctance motor technical field. Including coaxial arrangement stator core and rotor core, still including two sets of permanent magnets, stator core protruding arrangement has multiple equal angle interval arrangement big teeth, form solid slot between adjacent big teeth, each big tooth end is provided with small tooth, and define first virtual slot and two sides second virtual slot, rotor core is provided with multiple rotor teeth. Two sets of permanent magnets are tangential magnetization spoke yoke permanent magnet and radial magnetization slot permanent magnet respectively, spoke yoke permanent magnet is set in second virtual slot, slot permanent magnet is set in solid slot mouth and first virtual slot, the pole pair number of two sets of permanent magnets is equal to the number of big teeth on stator core, and the solid slot between big teeth is embedded with armature winding. Can solve the problem of low utilization rate of iron core and low motor output torque caused by structural defects in prior art traditional permanent magnet magnetic flux switching motor.

This invention relates to an intelligent integrated permanent magnet synchronous motor, which includes a motor body, an electronic control unit, and a display screen unit. The motor body includes a motor housing, a motor shaft, a motor stator, and a motor rotor. Connecting bearings are respectively provided in the two side walls of the motor housing. The connecting bearing includes an outer bearing ring, an inner bearing ring, and several rollers. The inner bearing ring is sleeved on the motor shaft. The inner bearing ring includes a bearing ring sleeve tube and a fan sleeve tube. The fan sleeve tube is fixedly connected to the inner end of the bearing ring sleeve tube and is located in the motor housing. The fan sleeve tube, the bearing ring sleeve tube, and the motor shaft have the same central axis.

This application relates to a rotor core, a rotor assembly, a motor, and a vehicle. The rotor core includes magnetic slots and a first set of magnetic barrier slots. Multiple magnetic slots are spaced apart circumferentially along the rotor core and extend radially along the rotor core. The first set of magnetic barrier slots is disposed between two adjacent magnetic slots and includes multiple magnetic barrier slots arranged sequentially radially along the rotor core. By placing the first set of magnetic barrier slots between two adjacent magnetic slots and including multiple magnetic barrier slots arranged sequentially radially along the rotor core, the air in the magnetic barrier slots has low permeability. Since magnetic reluctance increases and decreases with permeability, the arrangement of the first set of magnetic barrier slots increases the d-axis magnetic reluctance between two adjacent permanent magnet assemblies and significantly reduces the d-axis inductance. This increases the salient pole ratio and the proportion of reluctance torque in the motor, which is beneficial for improving the motor's field weakening speed-up capability.

A machine assembly includes a ferromagnetic annular rotor rotatable about a central vertical axis and configured to support at least one object. A plurality of levitation actuators are spaced circumferentially about the central axis and radially outwardly from the rotor. Each levitation actuator includes a permanent magnet configured to exert an attractive force on the rotor to levitate the rotor above a base surface, the attractive force having a vertical component along the central axis. A plurality of axial adjustment actuators are spaced circumferentially about the central axis and radially outwardly from the rotor. Each axial adjustment actuator includes an electromagnet configured to exert an attractive force on the rotor to adjust the position of the rotor along the central axis, the attractive force of each axial adjustment actuator having a vertical component directed in an opposing axial direction from the vertical component of the levitation actuators attractive force.

The invention provides a framework splicing block, a motor framework, an iron core and a motor, relates to the technical field of motors, and solves the technical problems that a traditional splicing block motor is complex in assembly process, difficult in slot insulation installation and lack of an excitation adjusting function. The framework splicing block comprises a splicing block body, a buckling point structure is arranged at one end of the splicing block body, a buckling hole structure is arranged at the other end of the splicing block body, and the splicing block bodies are connected through cooperation. The splicing block body is further provided with an auxiliary winding receding groove and a silicon steel block groove, and the pointing angle of the silicon steel block groove is set according to needs so as to optimize the magnetic field layout. The groove insulation and the frameworks are integrally formed, and axial deviation is prevented through a concave-convex meshing structure of the upper framework and the lower framework. The device has the advantages of being simple in structure, convenient to assemble, high in efficiency and high in applicability.

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of motors, the motor comprises a stator iron core and a rotor iron core, a stator punching sheet of the stator iron core comprises a stator yoke and a plurality of stator teeth distributed along the inner circumference of the stator yoke at intervals, two adjacent stator teeth and the stator yoke enclose a stator slot, the number of the stator slots is Q, the maximum outer circle contour radius of the stator punching sheet is R1, and the minimum inner circle contour radius of the stator punching sheet is R2. The rotor core is formed by stacking a plurality of rotor punching sheets, the rotor punching sheets are provided with a plurality of magnetic steel grooves along the circumferential direction, magnetic steel is installed in the magnetic steel grooves, so that the rotor core forms a plurality of magnetic poles which are alternately distributed along the circumferential direction, the number of the magnetic poles is 2P, and the greatest common divisor of 2P and Q is N; 2.5 < = N * (R2 / R1) < = 3.5, and the unit of R1 and R2 is mm. The technical scheme provided by the invention aims to improve the magnetic flux and rotational inertia of the motor under each magnetic pole of the motor, and further improve the power density and efficiency of the motor.

The present application provides a rotor assembly and a self-starting permanent magnet synchronous reluctance electric motor. The rotor assembly includes a rotor core 1, and in a cross section of the rotor core 1, the rotor core 1 includes slit grooves 2, a q-axis squirrel-cage groove 41, and permanent magnets 3, the q-axis squirrel-cage grooves 41 are provided at both ends of the slit grooves 2, the permanent magnets 3 are arranged in the slit grooves 2, at least the permanent magnets 3 located in the innermost layer in the d-axis direction are arranged asymmetrically with respect to the d-axis, and the offset direction of the permanent magnets 3 located in the innermost layer with respect to the d-axis is the same as the rotation direction of the rotor assembly.

This invention relates to the field of electric motors, specifically to an electric motor rotor and a permanent magnet synchronous motor. The electric motor rotor includes a rotor core with multiple magnetic poles. Each magnetic pole has a first magnetic slot unit and a magnetic pole centerline d-axis corresponding to the first magnetic slot unit. The first magnetic slot unit is filled with a first permanent magnet, which forms a first magnetic flux. On a cross-section perpendicular to the centerline of the rotor core, the first magnetic flux has a concave side and a convex side opposite to the concave side in the d-axis direction. The concave side of the first magnetic flux is close to the center of the rotor core. This improves magnetic flux, increases motor efficiency, reduces motor harmonics, and reduces motor operating noise.

This invention provides an electric motor, an electric power steering system, and a vehicle. The motor includes a stator core, a rotor core, and an air gap. The rotor core is located inside the stator core, and the air gap is located between the rotor core and the stator core. The axial height Ls of the stator core, the outer diameter Dso of the stator core, the stator split ratio k of the stator core, the axial height Lr of the rotor core, and the width lg of the air gap satisfy the following: This application optimizes the dimensional relationship between the stator core, the rotor core, and the air gap between them. Without increasing the number of components, it effectively solves the problem of motor performance degradation caused by end magnetic leakage, thereby reducing cogging torque, suppressing torque pulsation, increasing the average torque of the motor, and improving motor vibration and noise. While ensuring motor performance, it can minimize motor weight and reduce production costs.

A generator comprises a pair of coaxially aligned rotors including an inner rotor disposed within an outer rotor that combine to form a magnetic field and armature pair. First and second prime movers rotate the rotors in opposite relative directions such that electricity is produced from relative rotation of the magnetic field and armature. First and second flywheels are connected to or integral with the rotors to rotate therewith. Each flywheel has a magnetic circumference. One or more magnetic supports are arranged relative to the circumference to cause at least one vertically acting magnetic force to be exerted on the circumference to support the flywheel's weight. A pair of magnetic stabilisers are arranged on respective opposed lateral sides of each flywheel. The stabilisers cause opposed horizontally acting magnetic forces to be exerted on the flywheel's circumference to impede lateral movement of the flywheel to stabilise the flywheel.

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.

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.

The utility model discloses a permanent magnet synchronous motor integrated with a liquid cooling circulation structure, which comprises a shell, a main shaft, a stator, a rotor, a front end cover, a junction box, a fan, a fan cover and a circulating pump, the main shaft is arranged in the shell, the stator is arranged on the inner wall of the shell, the rotor is arranged on the outer wall of the main shaft, the fan cover is arranged at an opening at the rear end of the shell, and the circulating pump is arranged in the shell. The fan is arranged in the fan cover, the circulating pump is arranged on the outer side of the fan cover, a spiral channel is formed in the shell, a liquid inlet is formed in the side, close to the fan cover, of the outer wall of the shell, a liquid outlet is formed in the side, close to the front end cover, of the outer wall of the shell, and the circulating pump is connected with the liquid inlet through a liquid inlet pipe. According to the utility model, the cooling liquid can be guided into the shell and circularly flows along the interior of the shell, so that heat generated in the working process of the motor is taken away, compared with a traditional single air cooling heat dissipation mode, the heat dissipation structure is not influenced by external environmental factors, and the heat dissipation efficiency of the motor is remarkably improved.

The invention provides a rotor monomer, a rotor assembly and a permanent magnet synchronous linear motor. The rotor monomer comprises a main iron core which comprises a main magnetic circuit wide tooth, a main magnetic circuit narrow tooth and first auxiliary magnetic circuit teeth, the two opposite sides of the main magnetic circuit wide tooth are respectively provided with one main magnetic circuit narrow tooth and two first auxiliary magnetic circuit teeth, the main magnetic circuit narrow tooth is symmetrically arranged about the center line of the main magnetic circuit wide tooth, and the two first auxiliary magnetic circuit teeth are symmetrically arranged about the center line of the main magnetic circuit wide tooth. The first auxiliary magnetic circuit teeth are symmetrically arranged about the center line of the main magnetic circuit wide teeth; the two auxiliary iron cores are arranged on the two opposite sides of the main iron core respectively, each auxiliary iron core comprises two second auxiliary magnetic circuit teeth, and the second auxiliary magnetic circuit teeth and the first auxiliary magnetic circuit teeth are arranged correspondingly; the main windings are respectively wound on the main magnetic circuit narrow teeth; and the secondary windings are respectively wound on the first secondary magnetic circuit teeth and the second secondary magnetic circuit teeth. According to the rotor single body, modular production of the rotor assembly can be achieved, the output capacity of a motor can be flexibly adjusted according to needs, the adjustment range is large, and the adjustment precision is high.

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of motors, and the motor comprises a stator and a rotor; the stator comprises a stator core and a plurality of windings, the stator punching sheet comprises a stator yoke and a plurality of stator teeth which are distributed along the inner circumference of the stator yoke at intervals, two adjacent stator teeth and the stator yoke enclose a stator slot, and the windings are wound on the stator teeth; the rotor comprises a rotor iron core and a plurality of magnetic steels, and the magnetic steels are distributed along the circumferential direction of the rotor iron core; the number of the stator grooves is Q, the number of turns of the winding is N, the wire diameter of the winding is phi, the phase number of the motor is M, the number of poles of the rotor is P, and phi * M * P / (Q * N) is larger than or equal to 0.007 and smaller than or equal to 0.021. According to the technical scheme, the energy efficiency of the motor is improved, the use requirement of the compressor is met, and the cost of the motor is reduced.

What is provided is a variable flux motor being a synchronous or induction motor, including: a stator; and a rotor, in which the stator includes: a stator core; and a winding wound around the stator core, and at least a part of the stator includes a non-linear soft magnetic material.

The invention relates to a rotor (4) comprising at least: a first rotor body (5) having a first set of permanent magnets (6); and a second rotor body (7) having a second set of permanent magnets (8), in which: the first rotor body (5) and the second rotor body (7) can be rotated relative to each other about a common axis of rotation (10) by means of a mechanical field attenuation mechanism (11) in order to overcome the action of the first torsional stiffness mechanism (9); the field attenuation mechanism (11) comprises a first lever element (60) pivotable about a fulcrum; the first rotor body (5) can be coupled to a first lever portion (61) of a lever element (60) and the second rotor body (7) can be coupled to a second lever portion (62) of the lever element, and the first lever portion (61) and the second lever portion (62) are positioned on opposite sides of the lever element (60) in the circumferential direction, and the lever element (60) is pivotally positioned on the rotor shaft (16); and a lever element (60).

This invention discloses a dual-source excitation composite rotor six-phase bearingless motor and its decoupling control method. The motor includes a stator assembly, a rotor assembly, an inverter, and a control unit. The stator assembly has a double Y-shifted 30° six-phase winding, and the rotor assembly includes a composite excitation structure composed of built-in permanent magnets and squirrel-cage bars. The control unit performs spatial vector decoupling of the six-phase currents, forming an αβ fundamental subspace, a z1z2 harmonic subspace, and an o1o2 zero-sequence subspace. In the αβ subspace, d-q axis current control is performed, with the d-axis simultaneously adjusting the dual flux linkages and the q-axis controlling the dual torque output according to the distribution coefficient. In the z1z2 subspace, harmonic current control is performed to generate a harmonic magnetic field with a pole pair difference of 1 to produce radial levitation force. In the o1o2 subspace, the zero-sequence current is monitored, faults are identified, and feedback triggers control adjustments. This invention balances high efficiency and a wide speed range, achieving independent control of torque and levitation force, and fault tolerance, making it suitable for high-speed precision transmission applications.

An electric machine, including a housing, a rotor which includes a rotor shaft and a rotor laminated core, and a stator which includes a stator laminated core. The stator laminated core includes grooves in which stator windings are received. A respective tooth of the stator laminated core is arranged between two respective grooves that are arranged adjacent to one another in a circumferential direction of the stator laminated core. An annular gap is configured between the rotor laminated core and the stator laminated core, and a tooth head ring is arranged in the annular gap, a respective recess of the tooth head ring arranged between two tooth arranged adjacent to one another in a circumferential direction of the tooth head ring. A relative position of the stator laminated core and the tooth head ring is adjustable to a first and second relative position.

A method for magnetizing a soft magnet in a rotor of a variable -flux memory motor (VFMM) includes: generating a first pulse of electric current that has a duration of equal to or more than 0.1 millisecond (ms) and equal to or less than 2 ms; and applying the first pulse to a stator winding of the VFMM to set a magnetization state of the soft magnet to a first magnetization state.

The embodiment of the utility model provides a rotor, a motor and an air conditioner. The rotor comprises a rotating shaft, a rotor core, a plurality of magnetic steels and an annular magnetic resistance structure. The rotor iron core comprises a plurality of iron core units, the iron core units are arranged at intervals in the circumferential direction of the rotating shaft, and a containing space is defined between every two adjacent iron core units. And the plurality of magnetic steels are respectively arranged in the corresponding accommodating spaces. The radial inner end faces of the iron core units and the outer circumferential face of the rotating shaft are arranged at intervals, the radial inner end faces of the magnetic steel and the outer circumferential face of the rotating shaft are arranged at intervals, and the radial inner end faces of the iron core units do not exceed the radial inner end faces of the magnetic steel in the direction close to the rotating shaft in the radial direction. The annular magnetic resistance structure is filled in the interval area between the iron core unit and the rotating shaft and the interval area between the magnetic steel and the rotating shaft. According to the rotor provided by the embodiment of the invention, the magnetic induction line of the magnetic steel cannot be transmitted to the radial inner side of the magnetic steel through the radial inner end face of the iron core unit, so that the magnetic leakage of the radial inner end of the magnetic steel is reduced.

The present invention relates to the technical field of permanent magnet synchronous electric motors. Provided is a rotor lamination for a high-efficiency permanent magnet synchronous electric motor. The rotor lamination provided in the present invention is designed on the basis of the following steps: on the basis of symmetry, designing a pole of a rotor lamination of an electric motor as a sector, wherein the central angle of the sector is 180 / p degrees, and p is the number of pole pairs; and with the central axis , of the sector, a boundary straight line of the sector and an inner circular arc line of a stator of the electric motor as references, using a geometric construction method to draw boundary positions of holes, wherein the formed holes are configured to insert permanent magnets having rectangular cross sections, and the permanent magnets in the holes have the same specification. The present invention enables the rapid design of serialized high-efficiency permanent magnet rotor laminations, thereby reducing the cost of an electric motor. As the outer side area of a pole portion is relatively small, the stress of a rotor reinforcing rib is relatively small. The width of a linear permanent magnet is relatively small, thereby reducing the magnetic flux density of a stator and further reducing the iron loss of the stator. A rotor core formed by laminating laminations designed in the present invention can allow for the insertion of permanent magnets having rectangular cross sections, thereby reducing the manufacturing and mounting costs of the permanent magnets.

A gear can include an input shaft and an output shaft and can further include an outer wheel; an inner wheel that is positioned concentrically in relation to the outer wheel; a traction means extending between the outer wheel and the inner wheel; a rotatable transmitter carrier that passes through the inside of the inner wheel; and at least one revolving transmitter positioned on the rotatable transmitter carrier and configured to lift the traction means from an outer periphery of the inner wheel and push the traction means onto an inner periphery of the outer wheel.

A rotor structure including a rotor, a stator, and magnetic pole parts is provided. Each magnetic pole part includes a radially-magnetized fixed magnetic-force magnet, first variable magnetic-force magnets which are disposed radially outward of, and at both circumferential end sides of, the fixed magnetic-force magnet, respectively, and have a magnetization state that is changeable in the circumferential direction by a magnetic flux, and a high magnetic-reluctance part formed between the fixed magnetic-force magnet and the first variable magnetic-force magnet in the circumferential direction and having a magnetic reluctance higher than the rotor core. The high magnetic-reluctance part includes a first vertically extending part radially extending at a position near the fixed magnetic-force magnet, a second vertically extending part radially extending at a position near one first variable magnetic-force magnet in the circumferential direction, and a laterally extending part connecting the first and second vertically extending parts in the circumferential direction.