73results about How to "Increased torque density" patented technology

The invention provides a permanent magnet synchronous motor and an inverter compressor, and relates to the technical field of compressor design and manufacturing, the permanent magnet synchronous motor comprises a stator core and a rotor core arranged in the stator core; the stator core comprises stator teeth which are uniformly distributed in the circumferential direction, a stator yoke is arranged between every two adjacent stator teeth, every two adjacent stator teeth and the stator yoke between every two stator teeth form a stator groove, and a winding is embedded in each stator groove; a plurality of uniformly distributed eccentric arcs and linear segments are arranged on the periphery of the outer edge of the rotor core in the circumferential direction, uniformly distributed magnetic steel jacks are formed in the rotor core, and a groove is formed between every two adjacent magnetic steel jacks; and permanent magnets with alternating NS poles are arranged in the magnetic steel jacks. The inner diameter Rsi of the stator iron core, the maximum outer diameter Rro of the rotor iron core and the axial length Les of the stator iron core are limited to meet the condition that Les / (Rsi + Rro) is larger than or equal to 0.455 and smaller than or equal to 1.264, the torque density of the synchronous motor can be increased, and cost is reduced.

The invention relates to the technical field of permanent magnet generators, and discloses a high-speed high-power-density transverse flux permanent magnet generator which comprises a machine shell assembly, a power generation unit body is arranged in the machine shell assembly, the power generation unit body comprises a stator assembly and a rotor assembly, and the rotor assembly rotates in the stator assembly to achieve power generation; the stator assembly comprises a winding cooling mechanism and a concentrated winding, the winding cooling mechanism comprises a front semi-ring cooling sleeve, a rear semi-ring cooling sleeve, an upper diversion bridge and a lower diversion bridge, the front semi-ring cooling sleeve and the rear semi-ring cooling sleeve are buckled to form a winding cooling ring, and an inner ring flow channel, a mounting ring cavity and an outer ring flow channel which are concentric are formed in the winding cooling ring; the upper diversion bridge and the lower diversion bridge are used for communicating the inner ring flow channel with the outer ring flow channel to form a cooling passage, and the concentrated winding is adaptively arranged in the mounting ring cavity, so that the winding can be directly cooled in the generator, and the contradiction between multi-polarization and high-speed and high-frequency is effectively relieved; the torque density and the rotating speed range of the transverse flux permanent magnet generator can be simultaneously improved.

The invention discloses a motor rotor structure with a magnetism gathering effect, an assembling method and a motor, and belongs to the field of permanent magnet synchronous motors. The rotor structure comprises a rotor iron core and a Halbach magnetic steel array; the Halbach magnetic steel array comprises circumferential magnetizing magnetic steel and radial magnetizing magnetic steel which are alternately distributed in the circumferential direction. The radial thickness of the radial magnetizing magnetic steel is greater than that of the circumferential magnetizing magnetic steel, so that the rotor iron core forms a rotor iron core boss at each circumferential magnetizing magnetic steel; the radial magnetizing magnetic steel is divided into N magnetic steel blocks in the circumferential direction, and the radial thickness of each side block is gradually increased from the outer side edge to the inner side edge. Preferably, the two side edges of the radial magnetizing magnetic steel are recessed towards the center block to form a V shape, and the vertex of the V shape is the intersection of the outer side edge of the edge block, the circumferential magnetizing magnetic steel and the rotor core boss. According to the Halbach permanent magnet array, the problems that the Halbach permanent magnet array is large in assembly difficulty, serious in demagnetization phenomenon and low in overload performance can be solved while the magnetism gathering effect of the Halbach permanent magnet array is utilized.

The utility model discloses a stator core, a stator assembly, a motor and electrical equipment. The stator core includes: a stator yoke; each stator tooth comprises a tooth part and a tooth boot, the tooth part extends along the radial direction of the stator yoke part, two radial ends of the tooth part are respectively connected with the stator yoke part and the tooth boot, the inner circumferential surface or the outer circumferential surface of the stator yoke part is provided with a plurality of first slots, and the plurality of first slots are arranged at intervals along the circumferential direction of the stator yoke part; a first inserting part is arranged at one end of the tooth part, and the first inserting part is inserted into the first inserting groove; and / or, the tooth boot is provided with a second slot, and the other end of the tooth part is provided with a second inserting part which is inserted into the second slot. According to the stator core provided by the embodiment of the utility model, the stator winding and the stator core are easier to assemble, the assembly efficiency is improved, and the slot fullness rate of the stator winding in the stator slot can be higher, so that the improvement of the torque density and the motor operation efficiency is facilitated, and the motor performance is improved.

The invention provides a rotor structure and a motor. The rotor structure comprises a rotor core (11), a first permanent magnet (12), a second permanent magnet (21) and a mounting groove (31), the second permanent magnet (21) is arranged at the axial end part of the rotor core (11), the second permanent magnet (21) comprises a plurality of magnetic pole parts (211) which are arranged in a partitioned manner, each magnetic pole part (211) is adjacent to the rotor core (11) in a gapless manner along the axial direction of the rotor core (11), and each magnetic pole part (211) is adjacent to the rotor core (11) in a gapless manner along the axial direction of the rotor core (11). The mounting grooves (31) penetrate through the rotor core (11) and at least partially penetrate through the second permanent magnets (21), and the first permanent magnets (12) are mounted in the mounting grooves (31). According to the rotor structure, the magnetic gathering effect of the motor can be effectively improved, and the utilization rate of the rotor core is improved.

The invention relates to a five-phase fault-tolerant dual-rotor magnetic field modulation motor, which comprises a stator, an outer rotor and an inner rotor, the stator comprises a stator winding and a stator core, the stator is subjected to modular fault-tolerant setting, armature teeth are separated by fault-tolerant teeth, and the end part of each stator tooth of the fault-tolerant teeth and the armature teeth is split into small teeth to form a modulation pole; armature teeth and fault-tolerant teeth are designed to be unequal in width; the end parts of the inner rotor and the outer rotor are connected through a flange and coaxially output torque; a samarium-cobalt material is used for replacing a neodymium iron boron material at an easily demagnetized part of the motor so as to ensure the reliability of the motor under a high-temperature demagnetization fault; stator windings are concentrated in armature teeth, and high-thermal-conductivity materials are arranged at the ends of the windings and used for directly cooling the windings.

The invention discloses a segmented hybrid symmetric laminated rotor, a preparation method and a motor, the rotor comprises a sub-shaft and a rotor core, the rotor core comprises a plurality of laminated assemblies symmetrically arranged relative to the middle of the rotor core, each laminated assembly is composed of a plurality of laminated individuals arranged in a stacked manner, and the laminated individuals are arranged in the sub-shaft. A plurality of groups of magnetic steel grooves are circumferentially formed in the surfaces of the lamination individuals, the shapes and sizes of the groove tops at the two ends of the magnetic steel grooves located on different lamination assemblies are different, and different magnetic barrier structures are formed between the different magnetic steel grooves and the lamination individuals. The magnetic steel grooves with different shapes are arranged on the lamination assembly, so that the lamination assembly has different magnetic barrier structures, the lamination assembly can form the rotor core of the motor rotor in various combination modes according to use requirements, and when the rotor rotates, torque harmonics with different phases generated by the lamination assembly with different magnetic barrier structures are mutually counteracted, so that the rotor core is more stable and reliable. The torque ripple of the synchronous reluctance motor can be effectively reduced.

The present invention discloses a three-stator dual-rotor disc motor, wherein the axial series disc motor comprises a first motor splicing module and a second motor splicing module, wherein the second motor splicing module is axially connected in series with the first motor splicing module, wherein the housing docking end of the first motor splicing module and the housing docking end of the second motor splicing module are openly arranged, so that two end covers and bearings and other parts can be reduced, thereby reducing the axial size of the three-stator dual-rotor disc motor, and the power density and torque density of the motor can be improved by connecting the modules in series. Moreover, in this solution, the dual-unit motors can be assembled in parallel to improve assembly efficiency.

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.

The utility model discloses a high-torque-density magnetic transmission speed reducer and a built-in motor of a power-assisted bicycle, and belongs to the power-assisted technology of bicycles. A magnetic transmission speed reducer and a motor in the prior art have the defects of large torque fluctuation, low transmission efficiency, easy magnetic field mismatch, uncontrollable eddy current loss and the like, the magnetic transmission speed reducer comprises a first stator, a first rotor and a modulation ring, the modulation ring is located between the first rotor and the first stator, a first air gap is kept between the modulation ring and the first stator, and a second air gap is kept between the modulation ring and the second stator. A second air gap is kept between the modulation ring and the first rotor, the modulation ring comprises modulation teeth, the total number of the modulation teeth is p2, the number of pole pairs of the first stator magnetic ring is p3, the number of pole pairs of the first rotor magnetic ring is p1, p1 = p2-p3, a magnetic field of the first air gap is coupled with a magnetic field of the second air gap, and rotation from the first rotor is output in a speed reduction mode through the modulation ring. The motor part and the reduction gear realize transmission through magnetic force, thereby improving the motor operation efficiency and reducing the overall noise of the motor.

The permanent magnet synchronous motor rotor structure comprises a magnetic conductive rotating shaft, a plurality of magnetic steel grooves are formed in the peripheral surface of the magnetic conductive rotating shaft, the magnetic steel grooves are distributed in the circumferential direction of the magnetic conductive rotating shaft, and permanent magnet magnetism gathering magnetic poles are arranged in the magnetic steel grooves. The permanent magnet magnetism gathering magnetic pole comprises a radial magnetic flux permanent magnet, a first tangential magnetic flux permanent magnet and a second tangential magnetic flux permanent magnet, and the first tangential magnetic flux permanent magnet and the second tangential magnetic flux permanent magnet are arranged on the two sides of the radial magnetic flux permanent magnet in the circumferential direction of the magnetic conductive rotating shaft. The magnetic flux directions of the first tangential magnetic flux permanent magnets and the second tangential magnetic flux permanent magnets are opposite, gaps are reserved between the adjacent magnetic steel grooves in the circumferential direction of the magnetic conductive rotating shaft, and soft magnetic adjustable magnetic poles are formed in the portions, between the adjacent magnetic steel grooves, of the magnetic conductive rotating shaft. The built-in induction motor for the electric spindle solves the problems that an existing built-in induction motor for the electric spindle is low in machining precision, low in efficiency, low in power density, large in motor size, low in control precision and slow in response time.

The application relates to the technical field of mechanical arms, in particular to a high-integration-degree mechanical arm joint module which comprises a control unit, a coding unit, a core driving unit, a speed reduction unit, a bearing unit, a torque feedback unit, a crankshaft and a shell assembly; the bearing unit comprises a bearing inner ring, a bearing outer ring, steel balls and a sealing ring which are coaxially arranged, the bearing inner ring is provided with an outer groove matched with the steel balls on an outer wall, and the bearing outer ring is provided with an inner groove corresponding to the outer groove on an inner wall; the bearing inner ring is provided with an inner ring clamping groove for clamping the sealing ring at a position close to an end portion, and the bearing outer ring is provided with an outer ring clamping groove corresponding to the inner ring clamping groove at a position close to an end portion. The application has the effects of realizing the synergistic optimization of high torque density and low friction loss in a limited space, reducing the volume of a sealing structure and improving the integration degree of the module.

This invention belongs to the field of motor technology and discloses a high-linearity finite-angle torque motor, comprising a cylindrical rotor and a cylindrical stator, with the rotor housed within the stator. The stator includes N coils and N constant magnetic circuit channels, where N is an even number of at least 2. The rotor's magnet portion has N polarities. The N coils of the stator are evenly arranged circumferentially on the inner side of the stator, with adjacent coils separated by constant magnetic circuit channels. The ends of all coil frames and the ends of the constant magnetic circuit channels together form the rotor's rotational track. Adjacent stator coils have opposite polarities after being energized, and adjacent rotor magnets also have opposite polarities. This invention employs a special stator lamination structure, theoretically eliminating stator cogging torque within the motor's operating angle range, thus improving the linearity of the motor's output torque. Compared to traditional slotted finite-angle torque motors, the output torque fluctuation is reduced by more than 70%.

This rotating electric machine comprises: a stator having a stator core around which a plurality of coils are wound; a rotor supported to be rotatable relative to the stator with a predetermined gap therebetween; a rotor case that holds the rotor; and a first bearing (201) and a second bearing (202) that rotatably support the rotor case. The rotating electric machine includes: a first flow path formation body (501) that forms a first flow path (501s) through which a refrigerant flows to a coil end part (601) protruding from the stator core; a first case part (401) which forms an accommodation space (201s) of the first bearing, is connected to the first flow path of the first flow path formation body, and fills the accommodation space with the refrigerant; a second flow path formation body (502) which forms a second flow path (502s) through which the refrigerant flows to a coil end part (602) disposed on the opposite side from the coil end part in the axial direction; and a second case part (402) which forms an accommodation space (202s) of the second bearing, is connected to the second flow path of the second flow path formation body, and fills the accommodation space with the refrigerant.

The utility model discloses a rotor assembly, a motor and a household electrical appliance, and relates to the technical field of motors. The rotor assembly comprises a permanent magnet and a rotor iron core, the permanent magnet comprises a magnetic ring and a plurality of magnetic blocks, the plurality of magnetic blocks are arranged on the inner side of the magnetic ring at intervals, and a plurality of iron core blocks of the rotor iron core are correspondingly arranged in mounting grooves between two adjacent magnetic blocks. The iron core blocks play a role in magnetic conduction, magnetic induction lines of the magnetic blocks at the two ends of the iron core blocks and the magnetic rings on the outer sides can enter the air gaps through the iron core blocks, namely, the area of magnetic flux emitted by the permanent magnets is larger than the area of the sides, close to the air gaps, of the iron core blocks, so that the air gap flux density is increased, the torque density is improved, and the performance of the motor is improved.

The invention relates to the technical field of robots, in particular to a speed reducer, a joint module and a robot, and solves the problem that the speed reducer cannot give consideration to both the reduction ratio and the size. The speed reducer comprises a sun gear, a plurality of compound planet gears, an inner gear ring and a planet carrier. Due to the fact that the compound planet gear comprises the first sector gear and the second sector gear which are coaxially connected, the first sector gear is externally meshed with the outer ring of the sun gear, the compound planet gear has speed ratio level difference, and therefore the reduction ratio of the speed reducer is guaranteed. Due to the fact that the projection of the first sector gear on the end face of the inner gear ring is located on the inner side of the inner ring of the inner gear ring, the first sector gear is prevented from extending to the outer side of the inner ring of the inner gear ring, and the radial size of the speed reducer is reduced. Namely, the reduction ratio of the speed reducer is ensured, and meanwhile, the radial size of the speed reducer is reduced, so that the torque density of the speed reducer is increased.

The application belongs to the technical field of vehicle braking system, and discloses a segmented pole arc motor for an electronic mechanical braking system, a use method and a vehicle.The motor comprises a stator and an inner rotor, the stator adopts a split tooth structure, is provided with an alternating current armature winding and a direct current excitation winding, and the rotor is provided with segmented pole arc permanent magnets, so that the motor forms a hybrid excitation structure in which a permanent magnet magnetic field and an excitation magnetic field are superposed.Through segmented optimization of the pole arc of the permanent magnet, the air gap magnetic flux waveform is improved, the cogging torque and torque ripple are reduced, and the running stability is improved; equivalent flux linkage is controlled by adjusting the excitation current, the no-load speed is improved in the braking gap elimination stage, and the armature current and the locked-rotor copper loss are reduced in the clamping force following and maintaining stage.The cogging torque, torque ripple and locked-rotor copper loss are reduced in the structural level and the control level, and the application is suitable for stable and reliable work of the electronic mechanical braking system under various working conditions.

The invention provides an axial magnetic flux electric joint module system for an assembly modular robot, which comprises a plurality of functional assemblies, and the plurality of functional assemblies comprise a driver assembly, an encoder assembly, a brake assembly, an axial magnetic flux motor assembly, a speed reducer assembly and a torque sensor assembly, each functional assembly comprises a shell, a functional device, an electrical connector and a mechanical connection structure, the functional device and the electrical connector are both installed on the shell, the mechanical connection structure is arranged on the functional device, the functional device is used for achieving the function corresponding to the target functional assembly, and the mechanical connection structure is used for achieving the function corresponding to the target functional assembly. The electrical connector is used for realizing current bridging and signal transmission among the functional components, the mechanical connection structure is used for physical structure connection among the functional components, and the plurality of functional components are stacked in sequence to form the joint module system.

The present application belongs to the technical field of motor design, and more particularly relates to an alternating pole vernier permanent magnet motor based on a harmonic modified rotor and a magnetic barrier stator. Specifically, it comprises a rotor and a stator, the rotor is coaxially arranged in the stator, the pole of the rotor core adopts a harmonic modified directional design, the air gap permeance distribution is optimized to suppress non-working harmonics, and at the same time, the inter-pole leakage is reduced and the permanent magnet flux density fundamental amplitude is improved; and the magnetic barrier embedded in the stator tooth is used to block the low-order non-working harmonic path in the armature flux density, so as to weaken the amplitude. The present application solves the problem that the current motor simply applies the Halbach permanent magnet array to only realize the enhancement of working harmonics, ignores the non-working harmonics existing in the air gap, and fails to realize the full utilization of permanent magnets, resulting in the problems of low torque density and high manufacturing cost of the current alternating pole vernier permanent magnet motor.

The invention provides a motor, which comprises a casing, an end cover, a fan and a stator assembly, the end cover is buckled at the end part of the casing, the stator assembly is assembled at the inner side of the casing, the stator assembly comprises a stator iron core and a plurality of windings wound on the stator iron core, and each winding is provided with a winding end part positioned between the stator iron core and the end cover; a spiral flow channel is formed on the inner side of the casing, the fan is arranged in the spiral flow channel, the spiral flow channel surrounds the periphery of the end part of each winding, a matching flow channel is formed on the end cover, the matching flow channel is communicated with the spiral flow channel, and a motor inner cavity is also formed between the end cover and the stator iron core; and air flow driven by the fan sequentially flows through the spiral flow channel, the matching flow channel, the motor inner cavity and the winding end part and returns into the spiral flow channel to form air flow circulation. According to the invention, the air flow circulation driven by the fan can effectively dissipate heat of the winding end part with the highest temperature of the motor, thereby improving the heat dissipation efficiency of the motor, improving the operation efficiency of the motor, and finally increasing the torque density and power density of the motor.

A built-in tangential mixed magnetic steel magnetism gathering type permanent magnet rotor relates to the technical field of motors, the rotor comprises a rotor iron core and a rotating shaft, the rotor iron core is provided with a plurality of permanent magnet units which are symmetrically arranged around the axis of the rotor iron core, and the permanent magnet rotor is characterized in that each permanent magnet unit comprises a middle magnetic steel, middle air permanent magnet grooves and radial magnetic steel are arranged between the adjacent permanent magnet units, the middle air permanent magnet grooves and the radial magnetic steel are arranged on the q shaft, the middle air permanent magnet grooves are arranged on the inner sides of the radial magnetic steel, and the middle magnetic steel and the adjacent radial magnetic steel on the two sides of the middle magnetic steel are arranged in a U shape. The rotor provided by the invention can reduce motor noise and torque ripple.

The application discloses a high-torque-density double-winding permanent magnet motor based on a magnetic gear effect and relates to the technical field of motors.The application comprises a stator core, a fundamental wave winding, a harmonic wave winding, a modulation unit and a permanent magnet rotor; a half-closed slot is formed in the inner surface of the stator core, two sets of windings which are not coupled and have different pole pairs are placed in the slot, one set of the windings is the fundamental wave winding, and the other set of the windings is the harmonic wave winding; the modulation unit is composed of non-magnetic blocks and magnetic blocks which are alternately arranged along a circumference, is connected with the inner surface of the stator core, and only an air gap exists between the modulation unit and the permanent magnet rotor; the permanent magnet rotor is a magnetic gathering type permanent magnet rotor and comprises a tangential excitation permanent magnet and a magnetic separation slot structure. The two sets of windings can efficiently utilize the harmonic magnetic field and the fundamental wave magnetic field, the independent modulation unit is adopted to realize the optimal modulation ratio of the motor, the single air gap structure is beneficial to improving the working magnetic density of the motor, and the torque density of the motor driving system is effectively increased.

The invention belongs to the technical field of motor equipment, and particularly relates to a reluctance-assisted permanent magnet vernier motor. The magnetic resistance auxiliary type permanent magnet vernier motor comprises a stator structure which comprises a stator iron core with a mounting cavity, an armature winding and a plurality of first permanent magnets, and the first permanent magnets are located in a stator notch and arranged at intervals in the circumferential direction of the stator iron core; the rotor structure comprises a rotor iron core located in the mounting cavity and a rotor shaft connected with the rotor iron core, and a gap is formed between the side surface of the rotor iron core and the inner wall of the mounting cavity; the edge of the rotor core is provided with a plurality of magnetic barrier groups for generating reluctance torque, the plurality of magnetic barrier groups are arranged at intervals along the circumferential direction of the rotor core, the side surface of the rotor core is also provided with a plurality of rotor slots for generating permanent magnet torque based on a magnetic field modulation effect, and the plurality of rotor slots are also arranged at intervals along the circumferential direction of the rotor core. Through effective superposition of the permanent magnet torque and the reluctance torque, the overall torque density and the output torque of the motor are improved.

The invention relates to a compressor which comprises a crankshaft, a rotor and an oil-gas separation piece. The rotor is connected to the crankshaft and comprises a fluid through hole. The oil-gas separation part comprises an oil-gas separation part, a first oil collecting part and a first valve, the oil-gas separation part comprises a fluid inlet, a first cavity, a first flow channel, a second flow channel, a second cavity, a fluid outlet, a first oil catching structure and a second oil catching structure, and the first cavity comprises a first sub-cavity and a second sub-cavity which are communicated through the first flow channel; the fluid inlet is communicated with the first sub-cavity, the second runner is communicated with the second sub-cavity and the second cavity, the fluid outlet is communicated with the second cavity, the first runner is arranged away from the crankshaft in the radial direction of the rotor, and the second runner is arranged close to the crankshaft; the first oil catching structure is arranged in the second sub-cavity, the second oil catching structure is arranged in the second cavity, a first oil collecting part is arranged on the bottom wall of the oil-gas separation part, the first valve is connected to the bottom wall of the oil-gas separation part, and the first valve controls the first oil collecting part to be opened or closed.

The utility model discloses a rotor assembly, a motor and a household electrical appliance, and relates to the technical field of motors. The rotor assembly comprises the rotor core and the permanent magnet, and the permanent magnet is integrally injection-molded on the rotor core, so that the assembly of the rotor assembly can be simplified, and the production efficiency is improved. The inner side wall of the rotor core is provided with a plurality of grooves which are arranged around the axis of the rotating shaft of the rotor assembly, the outer side wall of the first magnetic part is provided with convex parts which are the same as the grooves in number, and the convex parts are correspondingly arranged in the grooves. Under the condition that the external dimension of the motor is not changed basically, the size of the permanent magnet can be effectively increased, and then the magnetic flux generated by the permanent magnet is increased. And meanwhile, the outer side wall of the first magnetic part is provided with the convex part, so that the area of the outer side wall of the first magnetic part can be effectively increased, the area of magnetic flux emitted by the rotor assembly is larger than the area of one side close to the air gap, a magnetism gathering effect can be formed, the air gap flux density is improved, the torque density is improved, and the performance of the motor is improved.

This utility model discloses a vernier permanent magnet motor, including a stator assembly and a rotor assembly surrounding the stator assembly. The stator assembly includes a stator core and stator windings. The stator core includes a main shaft, a plurality of stator main teeth evenly distributed circumferentially around the main shaft, and at least two auxiliary teeth formed at the end of each stator main tooth opposite to the main shaft. The stator windings include a first coil winding wound on the stator main teeth and a second coil winding wound on the auxiliary teeth. The working magnetic field generated by the first coil winding and the second coil winding has the same phase, while the non-working magnetic field has opposite phase. The vernier permanent magnet motor of this application can simultaneously achieve high torque density and anti-saturation capability, which is beneficial for the widespread application of the motor.

The application relates to the technical field of electric drive transmission equipment, and discloses a multi-stage planetary rotor group large-torque direct drive system and a control and assembly method thereof. The sealed high-strength load-bearing shell is integrally cast and has a completely closed high-pressure sealed cavity formed by being enclosed inside. The single-field excitation stator assembly is fixed to the inner wall of the load-bearing shell through a hot-pressing process, the stator core is uniformly provided with embedded grooves in the circumferential direction, three-phase distributed excitation windings are wound in the grooves, and the winding ends are subjected to insulation curing treatment. The axial multi-stage planetary rotor assembly is coaxially arranged along the central axis of the whole machine. The single-stator axial multi-stage planetary rotor coaxial series connection, magnetic field coupling and mechanical planetary composite transmission structure are adopted, the rotors at all stages share the same central output main shaft to realize step-by-step superposition of the torque, and the inter-stage non-magnetic-conducting magnetic shielding ring completely blocks the magnetic field cross talk. Compared with the combination of a traditional permanent magnet motor and an external speed reducer, the torque density, transmission efficiency and structural integration degree are significantly improved.

The invention relates to a double-layer iron core transverse magnetic flux motor and transformer integrated device, which comprises a stator assembly comprising an inner stator, an outer stator and armature windings wound on the inner stator and the outer stator respectively, the inner stator and the outer stator are coaxially arranged, and the inner stator and the outer stator respectively comprise a plurality of groups of U-shaped iron cores and permanent magnets; the rotor assembly is coaxially arranged between the inner stator and the outer stator, two rows of rotor teeth are arranged inside and outside the rotor assembly in the circumferential direction respectively, and the two rows of rotor teeth are distributed in a staggered mode. By means of the structural design of the double-layer iron core transverse magnetic flux switching motor, large power output is provided in a small size, the motor is reconstructed into an efficient transformer, electric energy transmission is achieved, extra assemblies and cost are reduced, the manufacturing cost of a system is reduced, the weight of an automobile is reduced, and the service life of the automobile is prolonged. And the energy efficiency and the endurance mileage of the electric vehicle can be improved, so that a more efficient and more convenient solution for charging the electric vehicle is provided.

The present invention relates to a multi-armature flux switching electric excitation motor, comprising a stator and a rotor, wherein the stator comprises a stator core, a hybrid winding and a stator armature winding, the stator core has stator slots distributed along its circumference, the stator slots comprise a first stator slot and a second stator slot, the first stator slot is provided on both sides with a second stator slot, the first stator slot is used to accommodate the hybrid winding, and the second stator slot is used to accommodate the stator armature winding; wherein the area of ​​the first stator slot is greater than the area of ​​the second stator slot; the rotor comprises a rotor core and a rotor armature winding, the rotor core has rotor slots distributed along its circumference, and the rotor slots are used to accommodate the rotor armature winding; the copper loss of the hybrid winding is greater than the copper loss of the stator armature winding, and the copper loss of the rotor armature winding is greater than the copper loss of the stator armature winding. The present invention realizes a significant improvement in the torque density of the flux switching electric excitation motor through the mutual cooperation of the multi-armature topology and the copper loss distribution of each winding and the stator slot type.

This invention discloses a high torque density magnetic harmonic reducer axial permanent magnet servo motor. The axial field-modulated motor includes a stator, a left rotor, a right rotor, permanent magnets, and armature windings. The radial magnetic harmonic reducer includes a stator, an outer rotor, an inner rotor, permanent magnets, and ball bearings. This invention integrates the stator of the magnetic harmonic reducer with the stator of the field-modulated motor, directly connecting them and eliminating the mechanical reducer structure of traditional servo systems, effectively reducing the overall weight of the servo system. The field-modulated motor uses an axial structure to improve the torque density of the servo system. The magnetic harmonic reducer uses a radial structure embedded in the hollow space inside the field-modulated motor to achieve a lightweight, highly integrated servo system design. Both the field-modulated motor and the magnetic harmonic reducer use surface-mounted permanent magnet structures to reduce torque ripple.