299 results about "Pole number" patented technology

The present invention discloses a construction method of a bilateral suspension motor. By using the Fourier decomposition method to analyze the magnetic field pole pairs of the permanent magnet in the air gap, the suspension winding is wound to generate a stable suspension force. First, determine the permanent magnet pole pairs and the number of modulation blocks of the motor, then modify the magnetic potential of the permanent magnet into a sine wave, and use Fourier decomposition to determine the fundamental wave pole pairs and rotation speed of the permanent magnet in rotation and at rest. According to the conditions for generating the suspension force, screen out possible suspension winding winding methods. Finally, according to the proposed constraint condition (n r -p s ) = p s ±2 and the principle that two magnetic fields with a difference of one pair of poles generate suspension force pulsation to determine the optimal suspension winding winding method. The suspension winding winding method provided by the present invention can set the winding of a specific suspension winding on the outer stator under the condition of determining the stator and rotor structure of the bilateral motor, so as to reduce the pulsation of the suspension force of the motor and generate a relatively stable suspension force.

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of refrigeration equipment, two end points on the bottom wall of the same magnetism adjusting groove are respectively a point C and a point D, the arc length of the shortest arc between the point C and the point D and taking the circle center of a rotor punching sheet as the circle center is Sr, the number of poles of a rotor is 2P, the included angle between the first groove wall and the center line of the magnetic steel groove of the corresponding group is alpha, the average angle number of each pole of the rotor is beta, the two end points of the two ends of the side wall of the side, facing the air gap, of the tooth shoe part are a point A and a point B respectively, the arc length of the shortest arc, with the circle center of the stator as the circle center, between the point A and the point B is St, 1.28 mm < = 1.56 mm, and 0.4 degree < = 1.56 mm. According to the technical scheme provided by the invention, the torque ripple of the motor is reduced, the noise of the motor is reduced, and the energy efficiency of the motor is improved.

A magnetic flux modulated type magnetic gear includes a small number of poles mechanism which has a plurality of magnetic poles, a large number of poles mechanism which has more magnetic poles than the small number of poles mechanism, and a pole piece which is provided between the small number of poles mechanism and the large number of poles mechanism, wherein, in the magnetic pole of the large number of poles mechanism, a permanent magnet and a magnetic field coil are provided. And the magnetic field coil is connected to a direct current power supply, which can be turned on and off.

The invention discloses an axial winding complementary type hybrid excitation high-speed magnetic flux reverse motor, and belongs to the technical field of power generation, power transformation or power distribution. The motor comprises a six-slot stator iron core, a four-tooth rotor iron core, a set of annular winding serving as an excitation winding and a set of concentrated winding serving as an armature winding, permanent magnet groups are attached to the inner surface of the tooth part of the stator core, two groups of axial permanent magnets are opposite in polarity, and two groups of circumferential permanent magnets are opposite in polarity; and the rotor iron core is formed by laminating a plurality of rotor iron core sections which have a mechanical angle of 45 degrees in the axial direction. The motor has the magnetic field adjusting capacity and has the advantages of being small in flux linkage, counter electromotive force sine, cogging torque and torque fluctuation, extra rising voltage caused by strong armature reaction during high-speed operation can be reduced through flux weakening, torque during low-speed operation can be improved through flux increasing, and due to the fact that the number of poles is small, loss is small during high-speed and high-frequency operation, and the motor is high in reliability. Compared with other magnetic flux reverse motors, the magnetic flux reverse motor is more suitable for high-speed operation.

The embodiment of the invention discloses a modular bearingless doubly salient electro-magnetic motor, relates to the technical field of bearingless doubly salient electro-magnetic motors, and can further improve the fault tolerance performance of the modular bearingless doubly salient electro-magnetic motor. The invention comprises a body structure of the modular bearingless electro-magnetic doubly salient motor and an annular direct current winding control method for suspension control of the modular bearingless electro-magnetic doubly salient motor. Structural optimization of a traditional bearingless electro-magnetic doubly salient motor is achieved, coupling between windings of the traditional bearingless electro-magnetic doubly salient motor is reduced, meanwhile, the modular topology is beneficial to physical isolation and electric, magnetic and thermal isolation of the motor windings, and the utilization rate of residual healthy windings is high when a fault occurs. The topological structure can be used for bearingless electro-magnetic doubly salient motors with other stator and rotor pole numbers.

The utility model discloses a motor, a compressor and refrigeration equipment, the motor comprises a stator, the stator comprises a stator iron core and a winding, the stator iron core is provided with a plurality of stator teeth, the winding is wound on the stator teeth, and a stator slot is defined between two adjacent stator teeth; the rotor is arranged in an inner cavity of the stator, the rotor comprises a rotor iron core and magnets, the rotor iron core is provided with a plurality of installation grooves, the installation grooves are arranged at intervals in the circumferential direction of the rotor iron core, the magnets are suitable for being installed in the installation grooves, the number of stator grooves is Q, the number of poles of the rotor is 2p, the phase number of the winding is m, the outer diameter of the stator is D1, the inner diameter of the stator is D2, and GCD (Q, G, D) is smaller than Q; 2p) is the largest common divisor of the number of the stator slots and the number of the poles of the rotor and satisfies Q / (2pm) lt; 1, 11.2 < = (D2 / D1) (GCD (Q, 2p)) 2 < = 16.5. According to the motor provided by the embodiment of the utility model, the power density of the motor can be improved and the vibration noise of the motor can be reduced by limiting the largest common divisor of the stator slots and the rotor poles and the inner and outer diameters of the stator.

The invention discloses an integrally sintered neodymium iron boron Halbach ring multi-pole rotating excitation magnetic field press which comprises a rack, a base, a die assembly, an upper die servo electric cylinder mechanism, a lower die servo electric cylinder mechanism, an excitation structure and a rotating excitation device. The base is fixedly arranged on the ground or a working platform; the rack is mounted above the base; the die assembly comprises an upper annular male die, a lower annular male die, a non-magnetic steel female die, a magnetic conductive die core and a die base. The excitation structure comprises an excitation frame, an excitation coil, an excitation pole and a magnetic conductive pole shoe; excitation forming of any even number of poles can be carried out by using a mold of the same size, the requirement for multiple pole numbers is met, the equipment investment is reduced, the production cost is reduced, the production period is shortened, the production flexibility and efficiency are improved, the diversified requirements of different clients and application scenes for the Halbach magnet ring are met, and the production efficiency is improved. The problems that an existing magnetic field press is single in forming pole number and uneven in surface magnetic field distribution are solved, and technical conversion and marketization are promoted.

The invention discloses a flat wire winding structure, belonging to the field of motor technology, comprising a stator core, wherein the upper and lower sides of the stator core are respectively the connection side and the insertion side of the flat wire, and the inner side surface of the stator core is provided with a plurality of evenly distributed axial slots along the circumferential direction, the number of winding poles of the flat wire winding structure is 2p, the number of slots of the axial slots is m, each axial slot is provided with 2n layers of conductors, and a flat wire U-shaped hairpin is inserted in the axial slot, and the flat wire U-shaped hairpin includes three pitch structures of full pitch Y1=m / 2p, long pitch Y2≥Y1+1 and short pitch Y3≤Y1‑1, and Y2‑Y3=m / 2p / 3, and the flat wire U-shaped hairpin adopts a cross-layer structure of two adjacent layers. The invention adopts a single-branch triangle wiring mode or a single-branch star wiring mode or a double-branch star wiring mode, and the potentials of the three modes are balanced, there is no circulating current problem, and the winding structure is simple and has no special-shaped wires.

The invention provides a method for calculating the air gap change of a single-rope winding type permanent magnet outer rotor elevator under a variable load effect. The method comprises the following steps: establishing a rotor roller mechanical model of the single-rope winding type permanent magnet outer rotor elevator under variable-speed and variable-load conditions; the resultant force borne by the roller is solved when the common influence of the external steel wire rope positive pressure and the internal radial electromagnetic force is considered; calculating the air gap change induced by the radial deformation of the rotor roller in the winding process of the steel wire rope; establishing a stator core mechanical model, and calculating the air gap change induced by the radial deformation of the stator; calculating an air gap comprehensive variable quantity caused by the common bearing load of the rotor roller and the stator iron core; according to the method, the real-time air gap comprehensive variable quantity of different types of single-rope winding type permanent magnet outer rotor hoists in the variable-speed working condition operation process can be accurately and rapidly calculated according to parameters such as the load size, the diameter and the width of a roller, the number of permanent magnet poles and the number of stator grooves.

The invention discloses an axial segmentation dislocation type polygonal permanent magnet synchronous linear motor, belongs to the field of permanent magnet motors, and aims at solving the problems that an existing polygonal permanent magnet synchronous linear motor is large in end force and high in thrust fluctuation. The device comprises six primary modules which are arranged on the outer side in a polygonal layout; the secondary module is located in the center of the polygonal layout and is of a cuboid frame structure with two open ends, and the air gap distances between the secondary module and all the primary modules are equal; the six primary modules comprise two mother modules and four sub-modules, and the length, the pole number and the slot number of the mother modules are twice of those of the sub-modules; each side of the secondary module is provided with one mother module or two sub-modules, and the primary module structures of the two opposite sides are symmetrical; the two sub-modules located on the same side edge are axially arranged in a staggered mode with the central axis of the mother module as the reference, and winding reconstruction arrangement is carried out; the armature windings of each phase of any primary module are connected in series or in parallel to form a phase winding, and the same phase windings of the six primary modules are connected in series.

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of permanent magnet motors, the motor comprises a stator iron core and a rotor iron core, rotor holes are formed in the inner circumference of the stator iron core, the number of stator grooves is Q, the width of each stator groove opening in the circumferential direction is W, and the minimum radius of each rotor hole is R; an inter-pole groove is concavely arranged between every two adjacent magnetic steel grooves and on the periphery of the rotor core, n harmonic grooves distributed at intervals are further concavely arranged on the periphery of the rotor core in sequence, central angles of the n harmonic grooves are A1, A2, and An in sequence on the circle center of the rotor core, a central angle of the inter-pole groove is As, and the number of poles of the motor is 2P, and the formula is satisfied. The technical scheme provided by the invention aims to suppress harmonic waves, reduce torque pulsation and further reduce the operation noise of the motor.

Winding grooves are formed in a stator iron core in the circumferential direction, the winding grooves comprise outer-layer stator grooves on the yoke portion side and inner-layer stator grooves on the side close to a permanent magnet rotor, harmonic windings are embedded in the outer-layer stator grooves, and the harmonic windings are double-layer short-pitch windings; a fundamental wave winding is embedded in the inner-layer stator slot, and the fundamental wave winding is a centralized winding; a plurality of modulation teeth are arranged in the stator iron core along the circumferential direction in a non-equidistant manner; the number pf of pole pairs of the fundamental wave winding is consistent with the number pf of pole pairs of the permanent magnet rotor, the number ph of pole pairs of the harmonic wave winding is different from the number pf of pole pairs of the fundamental wave winding, and the number Ns of poles of the modulation teeth meets the condition that Ns = pf + ph, Ns = (1 + 2n) ph or Ns = (1 + 3n) ph. The technical defects that a traditional permanent magnet motor cannot utilize harmonic waves and a conventional magnetic gear effect permanent magnet motor cannot efficiently utilize harmonic waves and fundamental waves to do work can be overcome, the torque density of the motor is greatly improved while the power factor is not degraded, and the complexity, the system cost and the additional loss of a magnetic field modulation structure are reduced.

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of refrigeration equipment, the motor comprises a rotor and a stator, the rotor is rotatably arranged in the stator, the thickness of a permanent magnet in the magnetizing direction is hm, and the coercive force is Hcj; the number of poles of the rotor is p; the stator comprises a stator core, the stator core comprises a plurality of first stator punching sheets and a plurality of second stator punching sheets which are laminated, the first stator punching sheets are made of silicon steel materials, and the total length of the first stator punching sheets in the axial direction of the stator is h1; the second stator punching sheets are made of amorphous alloy materials, the total length of the second stator punching sheets in the axial direction of the stator is h2, and at least one first stator punching sheet is located at the lowest end of the axial direction of the stator iron core. According to the technical scheme provided by the invention, balance is found between reservation of the low iron loss advantage of the amorphous alloy material and realization of reliable assembly of the stator and the main shell through relevant parameter constraints, so that the amorphous iron core can be prevented from being extruded, the cost is reduced, and the energy efficiency of the compressor is improved.

The utility model discloses a magnetizing coil with staggered iron cores. The magnetizing coil comprises a cooling jacket, a first iron core lamination layer, a second iron core lamination layer, a third iron core lamination layer and a fourth iron core lamination layer, according to the magnetizing coil with the staggered iron cores, the height of the staggered iron cores and the height of the single stack can be differentially and correspondingly designed according to the structure of a specific workpiece to be magnetized, a rectangular staggered rotor can be magnetized, the problem of the staggered rotor in the production process is solved, meanwhile, the saturation of magnetizing is not lower than 97%, the magnetizing efficiency is effectively improved, and the like. Compared with the prior art, the magnetizing clamp with different dislocation angles and different pole numbers can be designed, various different requirements can be met, the current of a wire is as small as possible under the condition that the magnetizing requirement is met, and therefore the service life of the magnetizing clamp with the iron cores arranged in the staggered mode is prolonged, one-time magnetizing is achieved, the magnetizing efficiency is improved, and finally the magnetic performance requirement of a whole rotor is met.

The invention discloses a wiring method of a stator winding of a flat wire motor, the stator winding and the flat wire motor, and relates to the technical field of motors, the method comprises the following steps: according to a design structure of the flat wire motor, a conductor in a stator winding slot is divided into multiple groups of sub-windings along an inner diameter direction, and the design structure of the flat wire motor comprises a total slot number, a total pole number and a total layer number; determining the number of parallel branches of the multiple groups of sub-windings according to the total pole number, wherein the number of the parallel branches is a divisor of the total pole number; determining the conductor layer number of the multiple groups of sub-windings according to the total layer number; and determining the wiring structure of the stator winding according to the number of parallel branches and the number of conductor layers. Since the conductors in the stator winding slots are divided into multiple groups, and each group adopts different parallel branches, more series turns of each phase can be realized through the combination of the parallel branches and the conductor layer, the optional range of the series turns of each phase is greatly improved, the expansion and optimization of the series turns of each phase winding are realized, and the service life of the stator winding is prolonged. Therefore, the requirements of driving motors with different voltages and performances can be met.

The present application provides a synchronous reluctance motor. The synchronous reluctance motor comprises a stator core (1) and a rotor core (2), wherein the stator core (1) comprises stator teeth (3), and the rotor core (2) comprises a plurality of magnetic barrier groups arranged along the circumferential direction, each magnetic barrier group comprises a plurality of magnetic flux barriers (4) arranged at intervals along the radial direction, and a magnetic conductive channel (5) is formed between adjacent magnetic flux barriers (4) under the same pole, wherein the number of stator teeth N is s 、Number of flux barriers under each pole B s and the number of rotor poles 2p have the following relationship: N s / 2p=B s +1. The synchronous reluctance motor according to the present application can effectively reduce torque pulsation and improve motor performance.

The invention discloses a full-stroke linear absolute position detection method, and belongs to the technical field of position detection. The invention aims to solve the problems of complex circuit structure and low detection precision of the existing full-travel rotor cable-free absolute position detection method. Comprising the steps that a permanent magnet array is installed on a rotor, an anisotropic magnetoresistive sensor array is correspondingly arranged on a stator, and the length of the anisotropic magnetoresistive sensor array is the position detection total stroke; the polar distance between adjacent permanent magnets is the same as the distance between adjacent sensors; determining a main sensor in a middle position in a coupling state according to the current sensor coupling number and the permanent magnet pole number, and calculating the current absolute position initial value of the rotor according to the angle reading of the main sensor; and position compensation is carried out on the current absolute position initial value of the rotor according to the pole number of the permanent magnets, the total number of the sensors and the relative position relation between the main sensor and the permanent magnet array, and the final detection position of the rotor is obtained. The method is used for absolute position detection.

The invention discloses a motor, a compressor and refrigeration equipment, the motor comprises a stator and a rotor, the stator comprises a stator iron core and a winding, the stator iron core is provided with a stator groove, the winding is wound on the stator iron core and located in the stator groove, the rotor comprises a rotor iron core and a plurality of permanent magnets, and the permanent magnets are arranged on the rotor iron core. The rotor core is provided with a plurality of magnet grooves per pole, the permanent magnets are located in the magnet grooves per pole, the number of the stator grooves is 15, the number of the poles of the rotor is 10, the intrinsic coercive force of the permanent magnets is hcj, the included angle of the magnet grooves per pole is alpha, the thickness of the permanent magnets in the magnetization direction is h, hcj is smaller than or equal to 1800 kA / m, h is larger than or equal to 11 * alpha / hcj and smaller than or equal to 50 * alpha / hcj, and alpha / hcj is an anti-demagnetization factor. According to the technical scheme, by adjusting the thickness relation between the anti-demagnetization factor and the magnet, on the premise that it is guaranteed that demagnetization meets the requirement, use of heavy rare earth elements is reduced, the cost of the magnet is reduced, and meanwhile the cost performance of the motor is improved.

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of refrigeration equipment, the number of poles of a rotor is 2P, the number of stator slots is Q, the longest distance between the slot bottom of a first magnetic adjusting slot and the circle center of a stator punching sheet is Ls, and the minimum inner diameter of the stator punching sheet is Di, the included angle between the connecting line of the point A and the circle center of the stator punching sheet and the center line in the length direction of the stator tooth is alpha, the two farthest end points of the tooth boot part along the circumferential direction of the stator punching sheet are respectively a point B and a point C, the included angle between the connecting line of the point B and the circle center of the stator punching sheet and the connecting line of the point C and the circle center of the stator punching sheet is beta, 0 degree < = 1.27 degrees, and 0 mm < = 0.2 mm. According to the technical scheme provided by the invention, the torque ripple of the motor is reduced, the noise of the motor is reduced, and the energy efficiency of the motor is improved.

To provide a method for estimating an axis error between a d-q axis and a γ-δ axis in a synchronous motor.SOLUTION: In a control method for driving a synchronous motor by sensorless vector control, a magnetic axis of a permanent magnet of the synchronous motor is defined as a d-axis, a direction orthogonal to the d-axis is defined as a q-axis, a designated magnetic axis of the synchronous motor is defined as a γ-axis, and a direction orthogonal to the γ-axis is defined as a δ-axis, and when vγ iγ+vδ iδ=P / 2 ωR ΦM iδ+R (iδ^2+iγ^2) is established, it is estimated that the d-q axis and the γ-δ axis coincide with each other without an error, and when the above expression is not established, an amount of the error is estimated from a difference between the left side and the right side. vγ represents a γ-axis voltage [V], iγ represents a γ-axis current [A], vδ represents a δ-axis voltage [V], iδ represents a δ-axis current [A], P represents a motor pole number, R represents a motor one-phase resistance value [Ω], ωR represents a motor electrical angular speed [rad / s], and ΦM represents a magnet flux [wb].SELECTED DRAWING: Figure 2

The invention relates to the technical field of motors, and discloses a flywheel energy storage motor stator-rotor structure and an optimization method thereof, and the flywheel energy storage motor stator-rotor structure comprises a stator body, a rotor body and a motor air gap. The method further comprises the following steps: step 1, designing an air-gap magnetic field: by adjusting the shape and the arrangement mode of a motor air gap or a permanent magnet, enabling a flux density waveform to be close to a sine wave when the motor air gap is in a no-load state so as to suppress harmonic waves; step 2, slot-pole matching design: a stator winding adopts a fractional slot concentrated winding form, a high fundamental wave winding factor is obtained by adjusting the matching relation between stator slots and permanent magnet pole numbers, and specific subharmonics are suppressed from a winding magnetomotive force level; 3, magnetic circuit and structure design: magnetic circuit saturation is suppressed by adjusting the geometric dimensions of stator teeth and a yoke part; according to the invention, the comprehensive performance targets of high torque density, high efficiency and low torque pulsation of the flywheel motor can be realized at the same time.

An electric motor with shaft, rotor and stator. The stator has a pair of magnets amd the rotor has a number of rotor poles, and the same number of electrically isolated pole windings and inter-pole spaces. The motor has first and second commutators, each divided into equally arc spaced commutator segments, the same number as the number of rotor poles.Each winding begins at a segment of the first commutator, passes through a first inter-pole space and back through an inter-pole space two spaces counterclockwise of the first space to complete a first winding turn, and after pre-selected number of winding turns, passes back through an inter-pole space three spaces counterclockwise of the first space for a second same number of winding turns as the first pre-selected number. The winding is completed at an segment of the second commutator arc-aligned at the same arc degree on the rotor shaft with the first commutator.In the electric motor the two magnets are separate by a gap between them such that a line through the gap is 90 degrees out of alignment with a line between a pair of oppositely signed motor brushes.The electric motor has two brush sets, with each of the two brush sets each having a pair of oppositely disposed brushes electrically isolated from each other and on opposite sides of the commutator.A method for parallel simultaneous internal generation of an output current in a motor, while the motor is drawing current to spin a motor shaft is also presented.

The utility model discloses a stator and rotor punching sheet, a motor, a compressor and an air conditioner, and the stator and rotor punching sheet comprises a rotor punching sheet which is provided with a plurality of magnet grooves suitable for accommodating magnetic parts, and the plurality of magnet grooves are arranged at intervals in the circumferential direction of the rotor punching sheet; wherein the sum of the groove areas of the plurality of magnet grooves is S1, the outer diameter of the rotor punching sheet is D1, the number of poles of the rotor punching sheet is P, and # imgabs0 # is satisfied, and the stator and rotor punching sheet has the characteristic of high rotational inertia of a rotor according to the stator and rotor punching sheet disclosed by the embodiment of the invention, so that low-frequency stable operation is realized.

The utility model discloses a motor, a rotary compressor and refrigeration equipment, the motor comprises a stator, the stator comprises a plurality of stator punching sheets, the stator punching sheets are provided with first connecting buckles, and the stator punching sheets are connected with adjacent stator punching sheets through the first connecting buckles; the rotor is arranged on the radial inner side of the stator, and the stator is suitable for driving the rotor to rotate; the motor meets the formula # imgabs0 #, L is the minimum radial distance between the first connecting buckle and the circle center of the stator, R is the radius of the maximum outer circle contour of the stator, and the number of poles of the rotor is 2P. According to the motor provided by the utility model, the minimum radial distance L between the first connecting buckle and the circle center of the stator, the number of poles 2P of the rotor and the radius R of the maximum excircle profile of the stator punching sheet are all in reasonable value ranges, so that the efficiency of the motor is effectively improved while the structural strength of the stator core, the stability of the rotor and the power of the motor are ensured.

The utility model relates to the technical field of motors, in particular to a permanent magnet rotor with internal and external double poles. According to the permanent magnet rotor with the inner and outer pole numbers, the size of the rotor is reduced, the outer magnetic steel and the inner magnetic steel are concentrically arranged in the radial direction, and compared with two sets of permanent magnet rotors with different pole numbers, the integrated size is smaller; the rotor only has magnetic steel and does not contain a winding, so that heat of the winding is prevented from being conducted to the magnetic steel, and heat dissipation is improved; the magnetic steel is separated from the winding, and the production efficiency is improved.

The present invention relates to the technical field of synchronous reluctance electric motors. Provided are a wound radial laminated rotor structure of a synchronous reluctance electric motor and a design method. The rotor structure comprises a rotor support, a rotor core, a fixing bolt and a pressing block, wherein the rotor core is formed by alternatingly and radially laminating magnetically-conductive layers and non-magnetically-conductive layers, the rotor core is fixed to the rotor support by means of the fixing bolt and the pressing block, the ratio of the thickness of the magnetically-conductive layer to the thickness of the non-magnetically-conductive layer is smaller than 5:1, the magnetically-conductive layers and the non-magnetically-conductive layers of the rotor core are of a concentric circle structure, the magnetically-conductive layers and the non-magnetically-conductive layers of the rotor core are wound to form a circular ring, and the rotor core is divided into parts with the same number as poles of the electric motor by means of a separation process. The rotor structure breaks through a traditional axial structure, no air magnetic barrier is present on the rotor, and the rotor structure is connected to a high-strength support by means of a high-strength bolt, thereby achieving high mechanical strength, and adapting to a high-speed synchronous reluctance electric motor product.

The invention discloses an axial flux permanent magnet synchronous reluctance motor rotor based on modular harmonic counteracting, the rotor is designed in a three-in-one mode of structure modularization, magnetic barrier gradient and phase computable dislocation, a rotor assembly is formed by splicing N fan-shaped rotor modules along the circumference, and the adjacent modules are provided with optimal dislocation angles calculated according to the harmonic counteracting principle. The sum of target harmonic magnetic field vectors generated by each module is zero; a U-shaped magnetic barrier array of which geometric parameters are monotonically changed in a gradient manner is arranged in the fan-shaped rotor module, and a permanent magnet group is embedded in the fan-shaped rotor module; main electromagnetic harmonic waves are offset from the source, magnetism gathering and resistance increasing functions are decoupled, the mechanical robustness and the electromagnetic performance of the motor are improved, meanwhile, overall machining is converted into standardized module assembling, the manufacturing cost and the maintenance difficulty are reduced, different motor pole numbers can be flexibly adapted, and the service life of the motor is prolonged. The method is suitable for high-end application scenes such as new energy automobiles, industrial driving and aerospace.

This application relates to an odd-even mixed-layer winding structure, a stator assembly, and a motor device. The stator assembly has 2p poles, and the stator core has Z stator slots, where Z = 12p. Each pair of stator slots forms a group. Within the same group, the stator slot on the left side has slot layers 1, 2, ..., m sequentially, and the stator slot on the right side has slot layers 1, 2, ..., (m+1) sequentially. Each winding branch includes several hairpin coils. The hairpin coils have m / 2+1 cross-layer configurations: crossing slot layers 1 and 2, slot layers 3 and 4, ..., slot layers (m-1) and m, and slot layers (m+1) and (m+1) respectively. This application can effectively avoid generating large stator-side magnetomotive force harmonics during motor device operation, thereby reducing the proportion of back EMF harmonics and preventing the performance of the motor device from being affected.

The present invention discloses a motor and its application. The motor includes a rotor and a stator surrounding the rotor; the rotor includes an iron core and a permanent magnet disposed on the iron core; the air gap width of the motor is δ; the number of magnetic poles in the rotor is 2P; the permanent magnet contains x% cerium by mass; the value of x ranges from 3 to 10; the thickness of the permanent magnet is h; the sum of the widths of the permanent magnets in each magnetic pole is w; and: x≤23*h‑25; 1+δ≤h≤1.4+δ; 2.5*x+15≤2P*h*w / 5≤4*x+37; h, w, and δ are all in units of mm. The motor provided by the present invention can reduce costs while ensuring its overall performance. The present invention also provides a compressor including the above motor and a temperature control device including the above compressor.

The utility model provides a stator of a flat wire motor and the flat wire motor. The stator is provided with three-phase windings, the number of poles is 8, the number of winding grooves of the iron core is 48, the flat wire winding of each phase comprises two branches, the wire inlet ends and the wire outlet ends of the two branches are located on the first layer, the two leg portions of the U-shaped sub-conductors in the first layer are located on the same layer, the spans of the two conductors of each pole and each phase are 5 and 7 respectively, the spans of the conductors of the other layers are 6, and the number of the winding grooves of the iron core is 48. The number of layers formed in the groove is M, M is an integer larger than 5, in the second layer to the (M-1) th layer, the two leg portions of the conductor are located on the two adjacent layers respectively, when M is an odd number, one leg portion is inserted into the conductor of the Mth layer, the other leg portion is located on the (M-1) th layer, and when M is an even number, one leg portion is inserted into the conductor of the Mth layer, and the other leg portion is also located on the Mth layer. The winding mode of the stator of the flat wire motor can be applied to the winding grooves of all layers, the winding mode is simple, and the end winding size is small.