209results about "Synchronous machines" patented technology

The present invention provides a rotor punching, a rotor core, a rotor, a motor, and a vehicle. The rotor punching is provided with a plurality of mounting slots for mounting permanent magnets. A pole arc region is defined between the portion of any mounting slot adapted for the permanent magnet and the outer periphery of the rotor punching. A magnetic isolation bridge is provided on both sides of any pole arc region along the circumferential direction of the rotor punching. A plurality of through holes are provided in any pole arc region, and the plurality of through holes are distributed at both ends of the pole arc region adjacent to the magnetic isolation bridge. The rotor punching provided by the present invention optimizes the rotor magnetic field distribution by providing through holes at the ends of the magnetic isolation bridges on both sides of the pole arc region, effectively weakening the quadrature-axis armature reaction, significantly improving the motor torque pulsation, and also enhancing the electromagnetic torque of the motor to a certain extent, thereby improving the motor's operating performance.

An electric work machine includes a stator including a stator core, an insulator fixed to the stator core, and a coil mounted on the insulator, a rotor at least a part of which is disposed on an outer circumferential side of the stator, the rotor including a magnet, a stator base including a first heat dissipation fin and supporting the stator core, and an output unit driven by the rotor.

A vehicle drive system includes a motor that has a cylindrical stator and a cylindrical rotor provided in the stator to be coaxially rotatable with a center axis of the stator and drives a front wheel of a vehicle by rotation of the rotor. The rotor has a cage section and a permanent magnet section provided on an inner circumferential side of the cage section and formed of a rare earth magnet. The vehicle drive system further includes a controller that executes a synchronous operation mode when a temperature of the permanent magnet section is lower than a predetermined temperature, and executes an asynchronous operation mode when the temperature of the permanent magnet section is equal to or higher than the predetermined temperature. In the synchronous operation mode, the rotor is rotated by using a magnetic force of the permanent magnet section.

A motor includes a stator having a plurality of stator coils repeatedly disposed in a circumferential direction and a rotor configured to rotate around a rotating shaft, including a magnetic material generating rotational force by interacting with the plurality of stator coils. The magnetic material forms a band shape and is configured to be continuously disposed in the circumferential direction. The magnetic material is repeatedly arranged in the axial direction, forming a plurality of layers in the axial direction.

An) electric machine with variable torque generation having a tunable Halbach array configuration. The electric machine includes a magnet assembly for generating a magnetic field. The magnet assembly includes a plurality of fixed magnets disposed in a ring arrangement so that fixed magnets having a north pole faced toward the rotor or stator are alternated with fixed magnets having a south pole faced toward the rotor or stator, a plurality of rotatable magnets disposed within a respective slot formed between two adjacent fixed magnets, a drive assembly for turning the rotatable magnets within the slots to vary the magnetic field generated by the magnet assembly in the rotor or stator, the drive assembly configured to turn the rotatable magnets between a first position wherein the magnetic field in the rotor or stator is augmented and a second position wherein the magnetic field in the rotor or stator is cancelled.

The present invention provides an apparatus for homogenizing one or more regions within a plurality of electrochemical cells, the apparatus comprising a plurality of magnetic flux generators, each configured to generate a respective varying magnetic field through at least one of the plurality of electrochemical cells, the plurality of magnetic flux generators and the plurality of electrochemical cells are arranged in an alternating manner.

The invention relates to the field of electrical engineering. A multi-pole, multi-phase generator-motor comprises a fixed magnetic core (stator), a movable magnetic core (rotor), a magnet and a winding. The fixed magnetic core contains a base element which consists of a magnet with a magnetizing winding and with generating windings arranged on two sides of the magnet such as to provide for opposite magnetic flux reversals in the combined power winding when the movable magnetic core is moving. The magnetizing winding is fed by the power windings via a rectifier. The number of base elements is a multiple of 6 or 12. The base elements are offset from one another by an angle β = Т+ΔТ and are arranged uniformly at the vertices of regular polygons, where T is a period determined by the angular size of a tooth and a space of the rotor, and ΔТ is the same dimension divided by the number of phases required by the consumer. All of the power windings of the base elements are connected in series. The technical result is that of providing a multi-phase alternating voltage to the end consumer.

A switched reluctance machine is described herein. The switched reluctance machine includes a rotor and a stator disposed concentrically with the rotor, the stator having stator teeth and windings wound about the teeth. The windings include, for each phase of the switched reluctance machine, a first set of coils and a second set of coils. The first set of coils includes first coils characterized by a first number of turns and the second set of coils includes second coils characterized by a second number of turns. The first number of turns is higher than the second number of turns. A motorized micro-mobility system that includes the switched reluctance machine is also described herein.

A rotor having a plurality of laminations joined together and mountable on a shaft for rotation relative to a stator of a rotary electric machine arrangement has a solid section that surrounds an opening within which the shaft is receivable. The solid section includes an outside diameter, magnet receiving voids, and steps delimiting a plurality of pole spans from flux directing features at sides of each of the pole spans. Adjacent flux directing features between adjacent pole spans are disposed on opposite sides of scalloped areas or other such recesses, permitting cooling air flow past the rotor. The invention also concerns a lamination usable together with additional laminations to provide such a rotor, as well as an arrangement, such as an AC motor, generator, or motor / generator, including a stator and such a rotor.

The utility model provides a rotor for a switched reluctance motor, and the rotor comprises a supporting member which is provided with a supporting outer surface which is arranged around the central axis of the supporting member, a plurality of grooves which are uniformly distributed in the circumferential direction are formed in the supporting outer surface, the rotor also comprises a plurality of magnetic conductive members, and the magnetic conductive members are arranged in the grooves. The plurality of magnetic conductive components are arranged in the groove, and two adjacent magnetic conductive components in the plurality of magnetic conductive components are separated by a part of the supporting outer surface; each of the plurality of magnetic conductive members is configured such that the magnetic conductivity in the radial direction of the support member is better than the magnetic conductivity in the chordwise direction of the support member, the chordwise direction being perpendicular to the radial direction. The utility model also provides a switched reluctance motor comprising the rotor. According to the invention, the torque generation capability of the switched reluctance motor can be improved.

A rotary electric machine (100, 660) arranged as a brushless electric ring motor is described and includes a rotor (50, 650) that is disposed within a stator (20, 620) and arranged to rotate on a guide element (13, 613). The rotor (50, 650) has a plurality of ferritic elements (60, 664) arranged on an outer surface (54, 663), and the stator (20, 620) is an annular device having a plurality of electro-magnetic elements (25, 668) arranged on an inner portion (32) between first (21, 667) and second flanges (22, 669). The first and second flanges both include an annular ring (652) that is fabricated from a non-magnetic material and has a plurality of ferromagnetic elements (28). The ferromagnetic elements (28) are magnetically coupled to corresponding ones of the electro-magnetic elements (25, 668) to exert magnetic force on the ferritic elements (60, 664) of the rotor when the electro-magnetic elements (25, 668) are activated. The rotary electric machine may operate as a first thrust generating system that is upstream of a second thrust generating system for a turbojet engine.

According to one aspect, a motor 1 for a personal care device 10 is provided. The motor 1 includes a stator 2 having a stator face, a rotor 3 having a rotor face disposed opposite the stator face, and a spacer 4 protruding between the stator face and the rotor face to define a minimum air gap between the stator 2 and the rotor 3. The spacer 4 is disposed on one of the rotor face and the stator face and has a contact surface configured to engage the other of the rotor face and the stator face.

The application discloses a surface-mounted permanent magnet motor magnetic pole optimization design method, and steps are finite element preliminary scanning calculation of permanent magnet magnetic pole design variables, determination of design variable refinement range based on target variables, finite element refinement scanning calculation of permanent magnet magnetic pole design variables and determination of final optimization scheme based on target variables; the design method scans and calculates the design variables twice and screens the scheme manually, thus improving design capability and calculation efficiency.

The invention relates to the technical field of motor control, and discloses a rotor vibration suppression method based on outer air gap radial force of a stator partition magnetic regulation motor, which comprises the following steps of: 1, obtaining an inner and outer layer air gap accurate magnetic conductance model according to a conformal transformation method; 2, constructing two new rotor structures for inhibiting the radial force of the outer air gap of the motor; step 3, analyzing the reason for suppressing the low-order radial force amplitude of the outer air gap of the stator partitioned magnetic field modulation motor by the new rotor structure; and 4, establishing a multi-physical field structure model, and simulating the vibration performance of the stator partitioned magnetic field modulation motor with different rotor structures. According to the method, a magnetic conductance-magnetomotive force model is established to analyze the flux density-radial force harmonic waves of the stator partitioned magnetic field modulation motor, it is clear that dominant radial force harmonic waves for generating main electromagnetic vibration are distributed according to outer air gap radial force distribution characteristics of the stator partitioned magnetic field modulation motor, and a rotor of a surface and internal auxiliary groove structure is provided; and the radial force amplitude existing in the outer air gap is effectively inhibited.

The utility model relates to a synchronous reluctance motor, which comprises a stator core and a rotor core, the stator core is sleeved on the periphery of the rotor core, a gap is reserved between the stator core and the rotor core, a plurality of stator tooth grooves are uniformly arranged on the surface of the stator core along the circumferential direction, windings are arranged in the stator tooth grooves, and ferrite is embedded in magnetic barrier grooves. A plurality of second through grooves are evenly distributed along the circumference of the rotor core, one side of each second through groove is communicated with the corresponding magnetic barrier groove, the other side of each second through groove penetrates to the outer side of the rotor core, a plurality of first through grooves penetrating through the inner side and the outer side of the stator core are formed in the stator core, and connecting grooves are communicated between the stator tooth grooves and the first through grooves. The outer side of the rotor core is uniformly connected with a plurality of fan blades along the circumferential direction of the rotor core. According to the utility model, heat generated during operation of the rotor and the stator can be effectively dissipated, and the aging process of each part of the motor is prevented from being accelerated due to a high-temperature environment generated during continuous operation, so that the service life of the whole system is prolonged.

The invention relates to a method for determining the temperature (ϑstator) of the stator winding of a vectorially controlled electric motor by superimposing a periodic excitation signal (f(t)) with an excitation frequency (fA) on a manipulated variable (id). Meanwhile, from motor signals (x(t)), comprising at least a first and second voltage component (ud, uq), a first and second current component (id, iq) and an angular frequency (ωel), a set (Tx) of signal characteristics ({x0, x1,sin, x1,cos}) is determined, comprising the DC component (x0), the component of the magnitude of the fundamental amplitude (x1,sin) at the excitation frequency (fA) in phase with the excitation signal (f(t)) and the component of the magnitude of the fundamental amplitude (x1,cos) at the excitation frequency (fA) 90° out of phase with the excitation signal (f(t)) in the respective motor signal (x(t)).From a system of equations, a set of motor parameters (Rs, Ld, Lq, Ψpm) is calculated using the signal characteristics ({x0, x1,sin, x1,cos}), which includes the electrical stator resistance (RS). The stator winding temperature (ϑStator) is then calculated from a temperature model (ϑStator(Rs)) that relates the stator winding temperature (ϑStator) to the stator resistance (Rs), or estimated using a function approximator (6) that uses at least the set of motor parameters (RS, Ld, Lq, Ψpm) and the sets (Tx) of signal characteristics ({x0, x1,sin, x1,cos}).

The application discloses a high-integration flywheel energy storage system based on a strong magnetic stator permanent magnet type axial flux motor, and relates to the field of flywheel energy storage systems.The system comprises a strong magnetic stator permanent magnet type axial flux flywheel motor, a high-integration hybrid magnetic suspension bearing and an integrated flywheel rotor, etc.The strong magnetic stator permanent magnet type axial flux flywheel motor comprises a stator and a rotor, and the stator is internally provided with a spiral cooling water channel.The high-integration hybrid magnetic suspension bearing comprises a radial magnetic suspension bearing and an axial magnetic suspension shaft, and is divided into a rotating part and a stationary part.The stationary part is integrated with the stator of the strong magnetic stator permanent magnet type axial flux flywheel motor, the rotating part is embedded in the flywheel rotor together with the rotor of the strong magnetic stator permanent magnet type axial flux flywheel motor, and the flywheel rotor is composed of the rotating part and the stationary part.

System for a wet-running brush module (4) of an electric machine with a rotatable shaft (80) having at least one bearing (84, 85), characterized in that the system has at least one spray nozzle (20) for a medium, wherein the at least one spray nozzle (20) is designed to spray the medium onto the at least one bearing (84, 85) of the shaft (80), wherein at least one receiving module (18) is attached to the brush module (4), via which the at least one spray nozzle (20) is connected to the brush module (4), wherein the at least one spray nozzle (20) is screwed, pressed or clipped into the at least one receiving module (18).

The present invention provides an apparatus for homogenising one or more regions within a plurality of electrochemical cells, the apparatus comprising a plurality of magnetic flux generators, each configured to generate a respective changing magnetic field through at least one of the plurality of electrochemical cells, wherein the plurality of magnetic flux generators and the plurality of electrochemical cells are arranged in an alternating manner.

This invention discloses a self-starting permanent magnet motor rotor and a self-starting permanent magnet motor, relating to the field of motor technology. The invention includes guide bar slots arranged in a circular array on the edge of the rotor laminations; and guide bars uniformly distributed in space within the guide bar slots. The relationship between the number of guide bars and the number of guide bar slots is: number of guide bars / number of guide bar slots = (t-1) / t, where t is only 2, 3, or 4. By employing the optimized structure proposed in this invention, the number of rotor guide bars is reduced to 3 / 4 of the number of guide bar slots, successfully reducing the starting current multiple to 7 times, enabling successful load starting of the self-starting motor. The proposed structure / method can significantly reduce the starting current of the self-starting permanent magnet synchronous motor, reduce the impact on the power grid during motor starting, and reduce the impact on other electrical equipment in the same power grid.

The invention relates to an electromagnetic driving device based on a staggered sheet structure spiral stepping motor, and belongs to the technical field of portable electromagnetic emitters. The shell, the motor stator and the emission structure are sequentially arranged from outside to inside, one end of the emission structure is provided with the head structure, and the shell and the motor stator jointly serve as a single-section pipeline of the electromagnetic driving device. According to the invention, the hybrid spiral stepping motor with the staggered sheet structure is creatively improved and is applied to the portable electromagnetic emitter; the spiral motor can enable the launching structure to rotate, the launching structure can carry objects such as a fire extinguishing device, and the shooting precision and distance are improved through rotation to improve the fire extinguishing efficiency.

The application relates to the field of motors, in particular to a phase current compensation method and device, a permanent magnet synchronous motor and a storage medium, the method comprising the following steps: acquiring three-phase duty cycles of a permanent magnet synchronous motor; obtaining a sector corresponding to a current sampling compensation point based on the three-phase duty cycles, and calculating a position parameter of the current sampling compensation point in the corresponding sector; obtaining a compensation ratio of a sampling current based on the position parameter in the sector; and compensating a current sampling value based on the compensation ratio. The application overcomes the influence of inaccurate phase current sampling, and can obtain the same good sampling and control effect in a low-cost current sampling scheme.

The invention relates to a steering feedback actuator, a steering system, and a steer-by-wire device. The steering feedback actuator comprises a transverse flux machine connected to a control unit via sensor data exchange. The transverse flux machine has a rotor and a stator arranged coaxially to the rotor, the stator comprising at least one stator ring with at least one ring coil, the at least one ring coil being arranged in a cavity formed by a press fit of a first half-shell and a second half-shell, wherein the first claws of the first half-shell and the second claws of the second half-shell of a press fit of the first half-shell and the second half-shell are oriented towards each other and spaced apart from each other, and a circumferential zigzag groove is formed on the at least one stator ring.

A rotator includes: a motor; and a brake that brakes the motor. The brake includes: a rotating plate that rotates with rotation of a shaft; a slide plate provided such that the slide plate can be slid in an axial direction of an axis of rotation of the motor in such a way as to approach and move away from the rotating plate; a spring that biases the slide plate toward the rotating plate; and an electromagnet capable of attracting the slide plate in a direction away from the rotating plate. The electromagnet includes: a yoke including an inner cylinder and an outer cylinder; and a brake coil. The yoke is disposed between the slide plate and a rotor in the axial direction. The brake coil is disposed adjacent to the rotor. When the brake coil is energized, the slide plate approaches both the inner cylinder and the outer cylinder.

The invention provides an electric and power generation integrated synchronous motor, relates to the technical field of new energy electric power engineering equipment, and solves the limitation problems of insufficient frequency stability and inertia and the like during grid connection of an existing new energy system. The synchronous motor comprises a base, a stator core, a rotor and a rotating shaft, the stator core and the rotating shaft are both mounted on the base, and the rotor sleeves the rotating shaft; a stator winding is arranged on the stator core, the stator winding comprises an electric winding and a power generation winding which are mutually independent, the positions of the electric winding and the power generation winding are correspondingly arranged, and the neutral points of the electric winding and the power generation winding are not connected; the electric winding is connected with the output side of the new energy system, and the power generation winding is connected with the external power grid side. And an excitation winding is arranged on the rotor and is used for generating a main magnetic field under the action of an externally input excitation current. The device integrates electric and power generation functions, has high inertia capability and frequency stability, and also has the advantages of small size and high efficiency.

[Bearing device with integrated electrical insulation, in particular for an electric motor or machine] The bearing device comprises a bearing 10 provided with a first ring 12 and a second ring 14 capable of rotating relative to each other. The device comprises at least one insulating sleeve 36 mounted on the second ring 14 of the bearing and provided with a bushing 40 and an insulating lining 38 interposed radially between the second ring 14 and the bushing 28 and made of electrically insulating material. The second ring 14 comprises an outer surface 14a and an inner surface 14b opposite the outer surface and which delimit the radial thickness of said second outer ring. The insulating lining 38 is overmolded on the bushing 40 and at least on one of the outer and inner surfaces of the second ring 14. At least first grooves are formed on said outer or inner surface of the second ring.The grooves are spaced apart from each other in the circumferential direction and within each of which extends a complementary shaped insulation lining attachment rib. Reference: Figure 1.

An electric stator for an expansion valve may include a first and a second coil body, a first electric connecting element, and a second electric connecting element. The first and second coil bodies may be substantially ring-shaped and extend along a circumferential direction. The first electric connecting element may protrude from the first coil body along an axial direction. The second electric connecting element may protrude from the second coil body. The first and second coil bodies may be arranged next to one another along the axial direction and may be fastened to one another via a common positioning aid.

A power generation device and method based on the time-varying magductance principle relate to the field of energy conversion, and in particular relate to an electromagnetic induction power generation device. The power generation device includes an electric energy generation unit, a power conversion unit and an electric energy storage unit. The electric energy generation unit includes a time-varying magductance component configured to form a closed conductor loop in a magnetic circuit with constant magnetic flux. By changing a magductance parameter of the time-varying magductance component, the time-varying magductance component generates induced current. The power conversion unit consists of a switching device and a circuit. The electric energy generated by the time-varying magductance component can be stored into the electric energy storage unit through controlling the switching device. The time-varying magductance power generation device provided by the present invention provides a new way for electric energy generation.

Described is a brushless synchronous motor (1) with axial flow which has at least one rotor defined by a first rotor disc (2), a first plurality of permanent magnets (3) mechanically anchored to the first rotor disc (2), a stator defined by a stator crown (4) comprising a plurality of ferromagnetic cores (5) and a plurality of winding sections and a respective plurality of supporting structures (6) defining containment seats for the ferromagnetic cores (5); the winding sections are wound in the supporting structures (6), each winding section defining a plurality of coils (7) made of superconductive material (HTS coils). The motor (1) further comprises a cryostat (11) configured to define a circulation duct for a cryogenic fluid, the cryostat (11) extends about an outer perimeter of the stator and is configured to touch each coil (7) of the plurality of coils (7). The cryostat (11) has an inlet opening (12) and an outlet opening (13) to allow, respectively, the introduction and extraction of the cryogenic fluid in the circulation duct.