6079results about "Windings conductor shape/form/construction" patented technology

To provide a technique for suppressing influences caused by the presence of a space communicating in a radial direction in a protruding portion, which protrudes from a stator core, in a stator coil.SOLUTION: A compressor 100 comprises a compression mechanism part 120 and a motor 200 which are stored in a sealed container 110. A stator 300 of the motor 200 includes a stator coil 340 wound around a plurality of teeth of a stator core 310. The stator coil 340 includes a first protruding portion 340A and a second protruding portion 340B protruding from the stator core 310 to a first side and a second side in an axial direction. At least outside of the first protruding portion 340A, a first enclosure wall 350 is provided which extends without a gap in the axial direction and a circumferential direction.SELECTED DRAWING: Figure 1

There is provided an intravascular blood pump for insertion into a patient's heart. The blood pump comprises a slotless permanent magnet motor contained within a housing, the motor having p magnet pole pairs and n phases, where p is an integer greater than zero, and n is an integer ≥3. The motor comprises a stator extending along a longitudinal axis of the housing and having 2np coils wound to form two coils per phase per magnet pole pair. The stator comprises inner and outer windings each comprising np coils electrically connected such that the current flowing through the coils is in the same direction, the coils of the outer winding arranged on an outer surface of the coils of the inner winding.

The invention relates to the technical field of electromagnetic coils, in particular to a laminated special-shaped plane spiral coil winding. The laminated special-shaped planar spiral coil winding is composed of at least two coil layers, and each coil layer is composed of a single special-shaped planar spiral coil. The inner ring part of the special-shaped plane spiral coil is a concentric plane spiral coil, and the outer ring part of the special-shaped plane spiral coil is a tooth-shaped spiral coil extending along the outer periphery of the concentric plane spiral coil; all phases of the coil winding are different in layer, the electrified magnetic field center of each coil layer deviates from the geometric center, and the projection of the magnetic field center of each phase in the plane of the coil winding is in central symmetry distribution. The invention innovatively provides a laminated special-shaped planar spiral coil winding, and provides a squirrel-cage equivalent rotor on the basis of the laminated special-shaped planar spiral coil winding, so as to provide competitive choices for reducing copper loss and improving heat dissipation, magnetic conductivity, structural strength and economic cost of an axial flux motor winding.

The invention relates to a multi-source system comprising an electric machine (M), of the type comprising a rotor and a stator (1), the stator (1) comprising a plurality of windings (10, 11, 12) made of turns of insulated conductive material, each winding (10, 11, 12) comprising a plurality of independently powered coils (100, 101, 102), characterised in that the system also comprises a plurality of DC power sources and a plurality of power electronics converters associated with different coils (100, 101, 102) of the electric machine (M), each power source powering one or more power electronics converters and each power source being connected to at least one coil (100, 101, 102) of each winding (10, 11, 12) of the electric machine (M).

Some embodiments of the present disclosure provide an oil cooled motor heat dissipation structure and a motor. The oil cooled motor heat dissipation structure includes oil spray parts which are arranged at two ends of a stator core. An outside diameter of the oil spray part is not less than an outside diameter of the stator core, and the oil spray part is in contact with a case, an outer surface of the stator core, the case and the oil spray parts construct a cooling medium flow chamber, so as to facilitate the flowing of a cooling medium in the cooling medium flow chamber along the outer surface of the stator core. The oil spray part is provided with an oil spray channel. One end of the oil spray channel is communicated with the cooling medium flow chamber, the other end is communicated with a chamber inside the motor.

An electric generator according to the present technology includes a coil element. The coil element includes a magnetic core and two or more windings. The magnetic core causes a magnetic flux change in an axial direction. The two or more windings that are each helically wound around the magnetic core in such a manner that each of the two or more windings is adjacent to the other winding in the axial direction of the magnetic core and are independent windings each capable of being electrically separated from the other winding.

The invention discloses a six-phase motor and a harmonic suppression hybrid winding design method thereof, and relates to the technical field of motors, and the method comprises the steps: obtaining a slot vector star diagram under six-phase current phase difference optimization based on a three-phase motor slot vector star diagram under the condition that the pole slot cooperation of the current motor meets the winding design requirement; based on the adjusted slot vector star graph and a coil pitch determined according to pole slot matching, a winding arrangement mode is designed under the requirement for balancing magnetomotive force amplitude; based on the designed winding arrangement mode, obtaining the current magnitude and phase of different terminals in each phase by introducing current with preset magnitude and phase; and determining the number of turns of each terminal in each phase under the constraint of a principle that magnetomotive force amplitudes generated by each coil are equal based on the current magnitude and the phase of different terminals in each phase. According to the invention, comprehensive suppression of stator magnetomotive force harmonics is realized through pole slot cooperation and six-phase current phase difference optimization in combination with a split-phase belt winding structure design.

The invention relates to the technical field of electromagnetic coils, in particular to a laminated planar spiral coil winding. The laminated planar spiral coil winding is formed by laminating at least two layers of planar spiral coils, the spiral center fitting line formed by each turn of wire is linear, the planar spiral coils occupy the whole winding plane, the strong magnetic center deviates from the geometric center of the planar spiral coils, and the phases of the winding are different in layer. The invention aims to provide competitive choices for the axial flux motor winding, such as high copper full rate, low copper loss, large air gap, easy heat dissipation and low production cost.

The invention relates to the technical field, provides a notch liquid cooling structure of a flat wire motor stator, and realizes high-efficiency and low-consumption motor stator cooling through an accurately-positioned full-coverage liquid cooling structure. In order to achieve the purpose, the motor comprises a stator iron core, closed iron core wire grooves are evenly distributed in the inner edge of the stator iron core, wires forming windings are inserted in the iron core wire grooves, the wires are tightly attached to the outer diameter ends of the iron core wire grooves, oil way channels are formed between the wires and the inner diameter ends of the iron core wire grooves, the two ends of the stator iron core are provided with end rings, and the two ends of the stator iron core are provided with end rings. The end ring wraps the wire, and the end ring and the oil path channel form a closed oil path space. Due to the adoption of the technical scheme, the oil path channel formed between the wire and the inner diameter end of the iron core wire slot is matched with the closed oil path space formed by the end ring and the oil path channel, and the position of the oil path channel is used for accurately cooling the wire with the highest heating.

The present application provides a stator core for cooling a winding end, a motor, a powertrain, and an electric vehicle. The stator core comprises a plurality of stator laminations, and the plurality of stator laminations are sequentially arranged adjacently in the axial direction of the stator core to form at least part of the stator core. Each stator lamination comprises a central hole and a plurality of cooling holes, and the cooling holes are arranged at intervals between the central hole and the outer peripheral surface of the stator lamination. The plurality of stator laminations comprise a first lamination and a second lamination arranged adjacent to each other, and each cooling hole of the first lamination is used for being communicated with one cooling hole of the second lamination and used for cooling a stator winding end so as to form a channel for a cooling medium to flow. In at least one direction of the radial direction or the circumferential direction of the stator core, each cooling hole of the first lamination is eccentrically arranged relative to one corresponding cooling hole of the second lamination communicated with the cooling hole of the first lamination. The stator core can reduce the cross-section of the channel for the cooling medium to flow and improve the flow speed of the cooling medium.

A method of cooling rotor winding end turns extending from a rotor core includes coupling a collar to a rotatable shaft of the rotor core. The collar has a first wall confronting the rotor core, a second wall spaced from and opposing the first wall, a third wall between the first and second walls defining a set of apertures therethrough, a first cavity cooperatively defined by the first, second and third walls, having a first opening opposing the third wall, a fourth wall circumscribing the third wall, a second cavity cooperatively defined by the second, third and fourth walls, the second cavity defining a second opening opposing the second wall. The first and second cavities are in fluid communication, and the rotor winding end turns are receivable into the second cavity. The method includes directing a coolant into the first cavity, and delivering the coolant to the second cavity.

The invention provides an axial magnetic flux motor. A stator structure of the axial magnetic flux motor comprises a stator supporting piece, a plurality of stator iron cores and two pole shoe cover plates. The stator supporting piece is provided with a plurality of accommodating grooves arranged along the circumferential direction, and the accommodating grooves penetrate through the stator supporting piece along the axial direction; the plurality of stator iron cores are correspondingly arranged in the plurality of accommodating grooves, each stator iron core comprises a coil winding and an iron core, the coil winding is provided with an iron core groove penetrating in the axial direction, the iron core is arranged in the iron core groove, the two ends of the iron core extend out of the iron core groove to form two extending ends, and the iron core is of a lamination structure adopting self-bonding silicon steel sheets; the two pole shoe cover plates are correspondingly arranged on the two sides of the stator supporting piece in the axial direction, a containing space for containing the multiple stator iron cores is formed between the two pole shoe cover plates, each pole shoe cover plate is provided with multiple through grooves formed in the circumferential direction, the positions of the multiple through grooves correspond to the positions of the iron cores of the multiple stator iron cores in a one-to-one mode, and the through grooves penetrate through the pole shoe cover plates in the axial direction. And the two extending ends of the iron core correspondingly extend into the corresponding through grooves of the two pole shoe cover plates.

The invention relates to an axial modular combined magnetic flux switching type linear rotating motor, which comprises a rotor assembly and a stator assembly, the stator assembly comprises a plurality of groups of stator units arranged circumferentially, and each stator unit comprises a plurality of stator modules, tooth-shaped permanent magnets connected among the stator modules and armature windings wound on the stator modules. The rotor assembly comprises a plurality of rotor modules, a plurality of rows of rotor teeth are arranged on the outer circumference of each rotor module, and the rotor teeth in the adjacent rows are distributed in a staggered mode. According to the invention, the mechanical dynamic performance is optimized while the energy conversion efficiency is maintained, the innovative stator system adopts a distributed module architecture, the fault-tolerant capability of the system is effectively improved through redundancy design, the modular construction not only simplifies the production process, but also is more beneficial to large-scale manufacturing, the mover part adopts a full-magnetic-conductive material topology, and the energy conversion efficiency is improved. The mechanical strength is ensured, meanwhile, light weight of moving parts is achieved, and the stability requirement under the high-speed operation working condition is met.

The invention belongs to the related technical field of motor winding design, and discloses a design method of an alternating current winding capable of generating multipolar magnetomotive force, which comprises the following steps of: selecting n three-phase symmetrical winding units according to n required magnetomotive forces and determining the number of fundamental wave pole pairs, performing star connection on three-phase windings in each three-phase symmetrical winding unit, the same-phase windings of the n three-phase symmetrical winding units are connected in series to form a winding assembly, and star connection is kept; according to the fundamental wave pole pair number of each three-phase symmetric winding unit, determining the arrangement of the corresponding three-phase symmetric winding unit in the iron core slot, and obtaining the initial arrangement of the winding assembly in the slot; and based on the equal ampere-turn principle of the alternating current winding, combining and simplifying the winding coil conductor in each slot to obtain the final arrangement of the winding assembly in the slots. An alternating current winding is designed based on the method, useless harmonic components can be suppressed, and various principal wave magnetomotive forces with any number of pole pairs and any turning direction can be generated.

The present disclosure provides a sealing device and an in-wheel motor including the sealing device. The in-wheel motor includes a stator, a rotor rotatably disposed with respect to the stator, an annular inner seal connected to the stator and spaced apart from the rotor by a predetermined gap so as to be disposed between the stator and the rotor, and an annular slinger coupled to an end portion of the rotor, wherein the annular inner seal seals between the slinger and the in-wheel motor.

A stator for an electric machine includes a stator core defining a slot extending in an axial direction from a first end to a second end, a wire disposed in the slot, a coolant pipe disposed in the slot and extending in the axial direction from the first end to the second end, the coolant pipe extending from a pipe inlet to a pipe outlet, and a thermally conductive potting material disposed in the slot between the coolant pipe, the wire, and the stator core.

A system includes: a segmented stator assembly; a set of windings; and a rotor. The segmented stator assembly includes a set of pole pieces arranged radially about an axis. Each pole piece defines: a rim extending about a periphery of the pole piece; a recess arranged on a first side of the pole piece; and a shoulder arranged on a second side, opposite the first side, of the pole piece. Each pair of adjacent pole pieces, in the segmented stator assembly, defines a pair of linearly-offset and angularly-offset rims that cooperate to define a tapered annular interstice in a radial array of tapered annular interstices. Each winding is arranged about a tapered annular interstice in the radial array of tapered annular interstices. The rotor: encompasses the segmented stator assembly; and includes magnetic elements configured to magnetically couple to the set of windings to rotate the rotor about the axis.

A stator having a stator core which has two end sides disclosed. A multiplicity of grooves are configured in the stator core. A stator winding occupies a plurality of winding zones in the grooves, a number of N strands has a number of 2·P poles, and the number of grooves is 2·P·N·q, where q≥2. Each winding zone extends across at least q+1 of the grooves, and each winding zone is radially subdivided into first to Lth layers. The layers configure first to (L / 2)th double layers, and a number of the double layers is less than the number of the other double layers. Each winding zone in the circumferential direction is subdivided into first to qth sub-winding zones, and a respective phase winding for one of the strands has at least one sub-winding which configures a current path and comprises internal portions that are disposed within the grooves.

The invention discloses a stator double-permanent-magnet flux reverse motor, and belongs to the technical field of motors. The motor comprises a stator, a rotor, tangential permanent magnets, Halbach array permanent magnets and windings, the stator is of a double-salient-pole structure formed by combining T-shaped stator iron core blocks. The rotor and the stator are coaxially assembled, and an air gap is reserved between the rotor and the stator. The tangential permanent magnets are installed between the stator iron core blocks and magnetized in the tangential direction, and the adjacent directions are opposite. The Halbach permanent magnets are arranged at the openings of the stator slots, so that the Halbach permanent magnets have a magnetism gathering effect and can provide relatively high air gap flux density; the winding adopts a double-layer centralized design and is embedded into a stator slot; the tangential permanent magnets and the Halbach permanent magnets form a parallel magnetic circuit, and the air gap flux density and the torque density are improved through magnetic field superposition; the number of winding pole pairs meets a specific formula, and the motor structure can be optimized through a finite element method. Compared with a traditional motor, the motor has higher air gap flux density, no-load back electromotive force and torque, lower torque pulsation and a higher power factor, and the electromagnetic performance and the operation stability are remarkably improved.

The invention discloses a straight bar splicing type stator core for a frameless torque motor, and relates to the field of stator cores, the straight bar splicing type stator core comprises a stator core body, the initial state of the stator core body is a straight bar shape, stator core split bodies are arranged in a straight line, the inner side projection of the stator core body is provided with a stator core tooth part, and the inner side projection of the stator core body is provided with a stator core tooth part. Coils are sequentially wound on the tooth parts of the stator core, and after the coils are wound, the stator core body is subjected to integral circle surrounding welding. According to the straight bar splicing type stator iron core for the frameless torque motor, the stator iron core body adopts a straight bar type design, the split structures of the stator iron core body are arranged in a straight line, and the connection part of each split body is provided with a process hole which is specially used for eliminating internal stress generated in the manufacturing and operation processes, so that the production process is simplified, the production efficiency is improved, and the production cost is reduced. And the uniformity and the stability of the iron core are ensured, the stress concentration is effectively reduced, the production speed and the production efficiency are improved, meanwhile, the manual intervention requirement is reduced, and large-scale manufacturing is facilitated.

A self-excitation motor disclosed by the present invention comprises a rotor, a first end of the rotor is equipped with a rectification circuit, the rotor comprises a rotor iron core and a plurality of harmonic windings and excitation windings, the rotor iron core is provided with rotor teeth, and each harmonic winding and each excitation winding are respectively wound on the corresponding rotor teeth. Each harmonic winding comprises a first harmonic winding and a second harmonic winding, the winding directions of the first harmonic winding and the second harmonic winding are the same, star connection is adopted, one ends of the first harmonic winding and the second harmonic winding are connected in series in a one-to-one mode, and the other ends of the first harmonic winding and the second harmonic winding are jointly connected to form a star neutral point; the other end of each second harmonic winding is connected with the midpoint of each bridge arm in the rectifying circuit in a one-to-one manner; the winding directions of the excitation windings on every two adjacent rotor teeth are opposite, and the two ends of each excitation winding are electrically connected with the direct current output end of the rectification circuit. This induces and rectifies the current for excitation more efficiently. The invention further provides a motor control strategy based on high-frequency harmonic current phase optimization.

The invention provides a reversing conveying module and a magnetic drive conveying system. According to one embodiment of the invention, the reversing conveying module comprises a bridging stator module which comprises a bridging armature winding communicated with at least two ends; one of the at least two commutation stator modules is arranged on the first side of the bridging stator module, and the other one of the at least two commutation stator modules is arranged on the second side of the bridging stator module; each commutation stator module comprises a first armature winding extending along a first direction and a second armature winding extending along a second direction, and in the first direction, the first armature winding is spliced with the bridging resistor winding. According to the scheme, the conveying direction of the rotor module can be changed without occupying extra space, and the conveying efficiency is high.

Provided are a stator and a rotating electrical machine that are more compact than the prior art. This stator is provided with: an annular stator core surrounding a central shaft and having a plurality of slots that are disposed at prescribed intervals in a circumferential direction around the central shaft and that extend in an axial direction parallel to the central shaft and in a radial direction; and a plurality of windings that include a plurality of segment conductors layered in a layering direction, which is the radial direction or the circumferential direction, and that are wound around the slots. Each of the segment conductors includes: a first segment conductor portion that is disposed at a coil end section which protrudes in the axial direction from an axial end surface of the stator core; and a pair of second segment conductor portions that are disposed in a pair of the slots, among the plurality of slots, that are mutually opposed. The first segment conductor portions of some of the segment conductors among the plurality of segment conductors are bent in the layering direction.

The invention discloses a ventilation cooling optimization method for an all-hydrogen-cooled gas turbine generator, and relates to the technical field of all-hydrogen-cooled generator cooling, and the method comprises the steps: analyzing cooling demands, calculating loss in combination with a high-frequency start-stop peak regulation working condition, and setting a stator RTD temperature, an iron core temperature and a temperature rise target; an end ventilation structure is designed, the diameter of the fan is optimized, and bar gaps, wind shield holes and inner supporting ring ventilation grooves are formed; optimizing variable air ducts of the iron core, and adjusting the width of the air ducts according to thermal load partitions; cFD coupling simulation verification is carried out, and a loss data simulation flow field and a temperature field are imported; carrying out physical test iterative optimization, manufacturing a prototype model, testing, and adjusting parameters until errors are qualified; operation monitoring and dynamic adjustment are carried out, and a sensor is installed to collect data in real time and adapt to working condition requirements. Cooling uniformity and efficiency are improved, peak regulation start and stop working conditions are adapted, hydrogen parameter change influences are balanced, vibration and cooling are cooperatively controlled, operation and maintenance convenience is improved through modular design, and long-term stable operation of the generator is guaranteed.

The invention relates to a high-power-density marine split-type permanent magnet shaft generator, which comprises a split-type stator, a split-type rotor and a cooling chamber, and is characterized in that a circulating water channel is arranged on the outer wall of a base of the split-type stator and is connected through a cooling water pipe; an air inlet and an air outlet are formed in two ends of the base; the cooling chamber is integrated at the top of the generator; the split-half rotor comprises a permanent magnet, a rotor core, a rotor support and an expansion sleeve. The rotor core is provided with a plurality of ventilation holes in the axial direction. The generator adopts a stator surface water cooling and forced air cooling mixed cooling system, and a water cooling channel and an air cooling channel operate independently and dissipate heat cooperatively. Through the structural design of the generator, the stator and the rotor of the generator are fully cooled, the heat dissipation efficiency of the generator is improved, and the power density of the generator is improved. A generator rotor permanent magnet is of a tangential structure, and the power density of the generator is further improved. And the ventilation holes are axially added to the rotor iron core, so that the weight of the rotor is reduced, and the influence on the original shafting of the ship is reduced.

The invention discloses a super-flat wire common-winding motor and a design method, and belongs to the technical field of motor design and manufacturing. The invention discloses an equal-pole common-winding axial magnetic flux motor and a design method, the equal-pole common-winding axial magnetic flux motor comprises a motor winding, a stator, a rotor, a casing and the like, and is characterized in that the number of magnetic poles of the stator and the number of magnetic poles of the rotor are equal, all the magnetic poles of the stator or the rotor on the same disc are excited through the same annular coil winding, and the winding can be a conventional round wire, a flat wire or a super-flat wire; alternatively, two or more concentric circle winding units, such as an outer ring winding unit and an inner ring winding unit, can be arranged on the same disc, radially adjacent iron cores can be shared or can also be independently arranged, meanwhile, the radial size of the shared iron core can be wider in consideration of the magnetic saturation problem, or the radial size of the shared iron core can be smaller in consideration of the magnetic saturation problem. The radial sizes of the iron core and the winding in the small-diameter area can be larger; the working principle can be a reluctance type, a switch reluctance type, a permanent magnet synchronous type, a direct-current motor type or an alternating-current motor type; the direct current motor can be a commutator or a plane commutator; or a brushless control scheme; the alternating current motor can be square wave, sine wave or other waveform; the phase difference of the three-phase alternating current can be 120 degrees; or two-phase or four-phase alternating current or other phase difference current with the phase difference of 90 degrees.

The invention discloses a stator and rotor punching sheet and magnetic steel for a concentrated winding type frameless torque motor, and belongs to the technical field of concentrated winding type motors, the stator and rotor punching sheet comprises a rotor punching sheet, a stator punching sheet and magnetic steel, and the center of the rotor punching sheet is provided with a rotor iron core; the stator punching sheet is composed of yoke parts and tooth parts, the tooth parts are trapezoidal teeth, the tooth parts and the stator grooves are distributed at equal angles, the tooth parts and the stator grooves are alternately arranged, and the stator grooves are straight grooves; the inner side of the stator punching sheet is also provided with a rotor punching sheet and magnetic steel, the rotor punching sheet and the magnetic steel form a motor rotor, and the motor rotor is a surface-mounted rotor. According to the stator and rotor punching sheet and the magnetic steel for the concentrated winding type frameless torque motor, the winding grooves of the stator iron core are flat-bottom straight grooves, the flat copper wires are wound in the winding grooves, the flat wire coils are fixed to the tooth portions through glue, integral potting is carried out after fixing is completed, and compared with a traditional pear-shaped groove for containing round wire windings, the stator and rotor punching sheet is simple and firm in structure, high in groove fullness rate, high in motor efficiency and improved in stability.

The present application provides a motor, a stator, and a method for manufacturing a stator. The motor stator includes a stator core and a stator winding. The axial end surface of the stator core is provided with a plurality of winding slots extending radially through the inner and outer walls of the stator core, the plurality of winding slots being spaced apart along the circumferential direction of the stator core. The stator winding includes at least one coil unit, the coil unit including a plurality of first conductors to be assembled, each of the first conductors including at least one insertion portion to be inserted into the winding slot. Because the coil unit is assembled and connected to and molded by the plurality of first conductors, when the stator winding is attached to the stator core, the plurality of first conductors can be connected to each other to form the coil unit before the entire coil unit is attached to the stator core. This simplifies the wiring process, facilitates automated mass production, simplifies the motor structure and assembly steps, and improves motor assembly efficiency.

According to the coreless motor provided by the invention, three groups of hollow coil groups are uniformly arranged on the inner circumferential wall of a driving cavity in a surrounding manner, the coils as stator parts do not contain iron cores, and the two ends of the coils are not communicated with each other, that is, each group of coils is electrically independent, so that a three-phase six-wire driving mode is realized. The full-bridge driving structures arranged in the driving cavity are connected to the two ends of each set of coils respectively, each full bridge controls one set of coils, and therefore the current direction and amplitude of each set of windings can be independently adjusted. When the motor is powered on, the hollow coil generates an alternating magnetic field under the action of current, and interacts with a rotatable magnetic driving piece located in the axis direction of the motor to form electromagnetic torque so as to drive the magnetic driving piece to rotate. The magnetic driving part is arranged around the axis and surrounded by the coil, and good magnetic flux coupling and stable rotation output are achieved. And in cooperation with a full-bridge driving structure, three-phase six-wire independent control is supported, the driving freedom degree is higher, the current waveform can be finely adjusted, and high-precision servo control is achieved.

The invention relates to the technical field of motors, and provides an efficient cooling high-speed permanent magnet synchronous motor which comprises a motor shell, an air inlet hole is formed in the outer surface of the motor shell, a supporting ring is detachably connected to the interior of the motor shell, a stator winding is fixedly connected to the inner side of the supporting ring, and a rotor is rotatably connected to the inner side of the stator winding. A rotating shaft is fixedly connected to the middle of the rotor, blades are fixedly connected to the outer surface of the rotating shaft, a cavity formed by the stator winding, the rotor, the motor shell and the end cover is an air passing channel, an air outlet pipe is fixedly connected to the outer surface of the motor shell, and an air outlet opening is formed in the surface of the stator winding. A cavity formed by the inner side position, corresponding to the supporting ring, of the stator winding, the supporting ring and the motor shell is an air outlet cavity. According to the technical scheme, the problems that an existing high-speed permanent magnet synchronous motor winding is high in accumulated heat, the effective power capacity of the motor is reduced, the manufacturing cost of a motor with the same power level is high, and manufacturing materials are wasted to a certain extent are solved.