371 results about "Motor design" patented technology

The invention discloses a design method of a coreless stator axial magnetic flux permanent magnet motor. The method specifically comprises the following steps: firstly, determining a basic structure, a permanent magnet structure and performance demand parameters of the coreless stator axial magnetic flux permanent magnet motor; determining stator and rotor structure parameters of the motor according to the performance requirement parameters of the motor; establishing a simplified model of an internal magnetic circuit of the motor, determining excitation magnetic potential of the motor, and establishing a finite element dynamic simulation model of the coreless stator axial flux permanent magnet motor based on a Maxwell equation; and finally, comparing the finite element dynamic simulation result with the motor performance demand parameter, if the finite element dynamic simulation result does not meet the requirement, correcting the motor design structure parameter and the electromagnetic parameter, and re-determining the stator and rotor structure parameter of the motor until the finite element dynamic simulation result of the motor meets the motor performance demand parameter. The design cost of the coreless stator axial magnetic flux permanent magnet motor is reduced, the design period is shortened, and the design efficiency and the design precision are improved.

The invention relates to a permanent magnet synchronous motor design method based on a multi-objective optimization algorithm, and the method achieves the efficient design and optimization of a permanent magnet synchronous motor through the combination of finite element simulation, multi-physical field coupling analysis, neural network performance prediction, and a hybrid optimization algorithm of a genetic algorithm and particle swarm optimization. The method comprises the following steps: determining a plurality of design targets according to an application scene of a motor, selecting key design variables, performing data cleaning and normalization processing, performing electromagnetic field, thermal field and mechanical field simulation by using a multi-physics field coupled finite element model, predicting the performance of the motor by combining LSTM and Transform neural network models, expanding a training data set through a data enhancement technology, and performing data enhancement on the motor. Finally, a hybrid optimization algorithm combining a genetic algorithm and particle swarm optimization is adopted to carry out global optimization and adaptive adjustment of design parameters, and a Pareto optimal leading edge is utilized to find out an equilibrium solution between design targets, so that the accuracy and efficiency of motor design are improved, and the method is suitable for various motor design scenes.

The invention discloses an axial magnetic flux dual-motor system and a vehicle. The axial magnetic flux dual-motor system comprises a shell assembly which is provided with a controller mounting cavity, a motor mounting cavity and a speed reducer mounting cavity; the controller is positioned in the controller mounting cavity; the two axial magnetic flux motors are arranged in the motor mounting cavity side by side in the axial direction of the axial magnetic flux motors and are electrically connected with the controller; and the two planet rows are located in the speed reducer mounting cavity and symmetrically distributed on the outer sides of the two axial magnetic flux motors, and the two planet rows are in transmission connection with rotor assemblies of the two axial magnetic flux motors correspondingly. According to the whole axial magnetic flux dual-motor system, the axial size of an electric drive body is greatly reduced by adopting a dual-axial magnetic flux motor design and a single planet row transmission design, the electric drive integration design function is improved, and compared with the prior art, the axial magnetic flux dual-motor system is smaller in size, lighter in weight and lower in cost.

The invention discloses a motor rotor core and a manufacturing method thereof, and belongs to the technical field of motor design and manufacturing. The rotor iron core comprises an iron core main body formed by laminating a plurality of punching sheets, and self-adhesive sheet end plates and arc-shaped pressing rings which are arranged at the two ends of the iron core main body. The self-adhesive sheet end plate is formed into a whole by heating, pressurizing and curing a self-adhesive sheet coated with epoxy resin or acrylic resin; the arc-shaped pressing ring is provided with a cambered surface structure, so that synchronous pressing in the axial direction and the radial direction can be achieved. And the iron core main body adopts a transposition lamination process, so that burrs of the punching sheet are uniformly distributed. Through chemical bonding of the end plates of the self-adhesive sheets, mechanical wedge-caulking of the arc-shaped pressing rings and error homogenization of transposition lamination, and through combination with the double-end tensioning screw subjected to insulation treatment, the problems that a traditional rotor iron core end punching sheet is prone to loosening, stress concentration and large eddy-current loss are caused by burrs, dynamic balance precision is poor and the like are effectively solved, and the service life of the rotor iron core end punching sheet is prolonged. And the structural rigidity, the operation stability and the motor efficiency of the rotor iron core are obviously improved.

The invention discloses a slotless permanent magnet motor based on a Halbach array, and belongs to the technical field of motor design and manufacturing. A rotor of the slotless permanent magnet motor is coaxially arranged in a stator, the stator comprises a stator iron core and a stator winding, the rotor comprises a permanent magnet and a rotor iron core, the permanent magnet is fixed on the outer wall of the rotor iron core and adopts a two-section Halbach array, the permanent magnet is composed of an auxiliary magnetic pole and a main magnetic pole, and an air gap is arranged between the stator iron core and the rotor. The stator winding is suspended in the air gap; during parallel magnetization, the magnetization directions of the permanent magnets of the Halbach array are along the tangential direction of the rotor, the magnetic pole directions are the same, and the main magnetic poles and the auxiliary magnetic poles both adopt a parallel magnetization mode; during radial magnetizing, the magnetizing direction of the permanent magnets of the Halbach array is in the radius direction of the rotor, the polarities of the adjacent permanent magnets are alternately arranged, the main magnetic poles adopt a radial magnetizing mode, and the auxiliary magnetic poles adopt a tangential magnetizing mode. According to the slotless permanent magnet motor, through directional magnetic field superposition of segmented magnetic poles, reverse magnetic leakage is reduced, air gap flux density is improved, and copper loss and iron loss are reduced.

The invention provides a test boundary condition determination method and device, equipment and a storage medium, and the method comprises the steps: building a multi-physical field coupling simulation model through obtaining the part structure information of a target motor, setting a simulation boundary condition, obtaining a to-be-tested simulation model, and carrying out the simulation test, stress distribution state information, temperature field change information and lubrication state change information of the to-be-tested simulation model are obtained, fatigue life information of all parts of the to-be-tested simulation model is predicted, and boundary conditions of motor performance testing are determined based on the fatigue life information; according to the method, the multi-physics field coupling simulation model is established and the simulation test result is used as guidance to construct the boundary condition, so that the deviation between the test working condition and the actual service condition caused by the fact that a general standard is applied due to motor design difference is avoided, and the fatigue life of each part is predicted through change information such as stress distribution, a temperature field and a lubrication state obtained through simulation test; the setting of the test boundary condition is more suitable for the actual condition of the motor, and the test error 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 belongs to the technical field of motor design, and particularly relates to a motor adopting a phase change heat pipe, which is provided with a rotor wing, a shaft, a heat pipe and a radiating fin in a matched manner, the motor comprises a motor shell, a stator, a stator winding and a rotor, and the motor drives the hollow shaft to rotate; the heat pipe comprises a rotor support outer circumference heat pipe, a rotor support inner circumference heat pipe and a rotor support middle circumference heat pipe. According to the motor, cooling of a motor rotor is achieved through the gas-liquid two-phase phase change technology, three circles of heat pipes are arranged and arranged on the outer circumference and the inner circumference of a rotor support, the outer circumference of an inner hole of the rotor support rotates along with the rotor, evaporation sections of the heat pipes directly exchange heat with the motor rotor, and liquid evaporates to absorb heat; and the gas enters the condensation section through the transmission section, is quickly cooled and condensed into liquid, and the liquid returns to the evaporation section for circulating cooling due to the centrifugal effect of the rotating shaft.

The invention discloses a voltage distribution and insulation weak point prediction method based on a flat wire winding of a variable frequency motor, and belongs to the technical field of motor design and insulation evaluation. The method comprehensively considers the geometrical shape, the insulation structure, the working voltage and the like of a motor stator, establishes a complete finite element model of a flat wire winding motor, and improves the reliability of the motor. According to the method, distribution parameters such as capacitance, inductance and resistance of a cable and a motor winding are extracted, a winding 'I-type high-frequency equivalent circuit model is built, field-circuit coupling electromagnetic analysis is carried out by utilizing finite element simulation software, the process can be automatically realized through a compiled program, and a user only needs to provide an original motor model and working parameters, so that the method is simple and easy to implement. According to the method, the voltage distribution of the flat wire type motor winding under variable frequency driving can be efficiently and accurately predicted, the radar map capable of visually displaying the insulation weak point is generated, a new thought is provided for positioning the insulation weak point of the motor, the motor design is guided and optimized, and the evaluation efficiency and accuracy of the insulation performance of the motor are improved.

The invention provides a motor multi-target optimization method and device, a medium and a program product, and relates to the technical field of motor design and development, and the method comprises the steps: obtaining a plurality of to-be-optimized targets of a target motor; determining a motor performance index matched with each to-be-optimized target and a motor design parameter variable matched with the motor performance index; a simulation model and a processing script are obtained, and the processing script is used for generating model input based on the motor design parameter variables, generating model output based on the motor performance indexes and controlling the simulation model to operate at multiple working condition points; starting the processing script to run the simulation model, and obtaining model output of a plurality of working condition points; and carrying out joint checking calculation on the multiple to-be-optimized targets based on the model output, and determining an optimization result of the motor design parameter variables based on a checking calculation result. According to the method, manual intervention is reduced through an automatic process, the optimization precision is improved, an exclusive optimization process for a specific motor can be constructed, and the design efficiency is remarkably improved.

The invention discloses a horizontal spiral discharging sedimentation centrifuge which comprises an assembly cover, a rotary drum, a rotary drum and a spiral conveying blade, wherein the rotary drum and the rotary drum are concentrically arranged. The rotary drum and the rotary drum are of a cylindrical and conical combined structure, and the spiral conveying blade is fixedly connected to the outer side of the rotary drum. A liquid-phase outlet and a solid-phase outlet are respectively formed in two ends of the assembly cover, and a slag discharge port communicated with the solid-phase outlet is formed in the side wall of the rotary drum. The feeding pipe extends into the rotary drum to be connected with the material distribution assembly, the assembly is composed of double rotary discs and a radial material distribution plate, and materials are evenly distributed. The overflow assembly is arranged at the large end of the rotary drum, an adjustable overflow opening is formed through hydraulic adjustment, and the separation effect is optimized. And the driving assembly adopts the design of a differential gear and a redundant motor, so that high-speed and low-speed stable operation of the rotary drum is ensured. The problems that a traditional centrifugal machine is low in separation precision and poor in operation stability are solved, and the solid-liquid separation requirements in the fields of chemical engineering, environmental protection and the like are met.

The invention provides a logarithmic spiral motor design method, belongs to the technical field of spiral motor design, and designs logarithmic spiral electromagnetic topology, fuses a plurality of materials, constructs an integrated structure body, and sets an intelligent regulation and dynamic matching control mode. Firstly, a magnetic flux path is optimized, magnetic flux is naturally distributed in the tangential direction of a spiral line by utilizing the characteristic that the curvature of the spiral line is continuously increased or decreased, edge magnetic flux distortion is reduced, then near-field coupling is enhanced, and the magnetic flux superposition phase difference between adjacent spiral units is controlled by adjusting spiral line parameters. The double targets of active enhancement of effective magnetic flux and suppression of magnetic leakage are achieved. Through deep fusion of geometric characteristics and electromagnetic laws of logarithmic spiral lines, pole slot limitation and loss bottlenecks of a traditional motor are broken through, through a logarithmic spiral line electromagnetic topology design normal form, geometric curvature and magnetic field distribution are quantitatively associated, and through a conductive, magnetic conductive and heat dissipation composite winding and an intelligent magnetic barrier structure, multi-field collaborative optimization is achieved.

The invention discloses a variable flux memory motor adopting a consequent-pole double-layer staggered permanent magnet structure. Belongs to the field of motor design and manufacturing. Each layer of permanent magnet in the variable flux memory motor adopts a high coercive force (HCF) permanent magnet and a low coercive force (LCF) permanent magnet, the HCF and the LCF in each layer of permanent magnet form a parallel magnetic circuit, and the HCF and the LCF between the two layers of permanent magnets are arranged in a staggered manner to form a series magnetic circuit, so that the double-layer U-shaped staggered permanent magnet structure can have the advantages of series connection and parallel connection of the two permanent magnets; and meanwhile, good load magnetic stabilization capability and a wide magnetic adjustment range are achieved. In addition, the consequent pole permanent magnet design can effectively reduce the magnetic circuit magnetic resistance and improve the LCF magnetizing and demagnetizing effect.

The invention relates to the technical field of ultra-high-speed motor design, fluid mechanical engineering and electromagnetic-structure coupling, in particular to an innovative structure-electromagnetic coupling design of a centrifugal hydrogen circulating pump driven by an ultra-high-speed permanent magnet motor. The integrated coupling rotor system is formed by rigidly connecting a permanent magnet motor rotor and a centrifugal impeller through conical surface interference and key groove positioning, a rotor iron core is formed by laminating 0.2 mm ultrathin silicon steel sheets (35W250), and impeller blade molded lines are optimized based on electromagnetic force harmonic characteristics (the number of blades is equal to the number of motor poles + / -1); the coupling matching degree is remarkably improved: through structure-electromagnetic parameter collaborative optimization, the comprehensive efficiency of the system reaches 85% or above, and is improved by 12%-15% compared with that of a separation design; an anti-resonance damping module is combined with a frequency avoidance design, and the vibration acceleration in an ultra-high-speed interval is smaller than or equal to 8 g and is reduced by 60% or above compared with a traditional design; the torque-load matching time is less than or equal to 0.3 s when the flow is suddenly changed, overcurrent impact or surge is avoided, and the dynamic requirement of a fuel cell system is met.

The invention discloses a pumping unit disc type permanent magnet motor multi-objective parameter optimization method, which relates to the technical field of motor design and optimization, and comprises the following steps: pre-establishing a multi-physical field coupling simulation model, constructing a disc type permanent magnet motor electromagnetic and thermal performance simulation model based on Motor-CAD and Maxwell software, and completing no-load, load and thermal performance tests of the motor. According to the method, the multi-physical field coupling simulation model is established in advance, so that comprehensive coupling analysis of electromagnetic and thermal performance of the disc type permanent magnet motor is realized, and high-precision data support is provided for multi-objective optimization; key structure parameters such as air gap length, slot opening width and the like are scientifically selected as optimization objects, maximization of motor efficiency and minimization of cogging torque are taken as core targets, and meanwhile, constraint requirements of output torque, back electromotive force and structure size are strictly adherent to each other, so that the pain point that multiple performances are difficult to consider at the same time in traditional optimization is effectively solved.

The present invention relates to the technical field of motor design, and provides a method for calculating a leakage magnetic coefficient of a closed slot in a rotor of an asynchronous motor. According to the calculation method provided by the present invention, by means of diverting the magnetic flux of rotor teeth in combination with a relative magnetic permeability calculated from a magnetization curve, a closed slot is ultimately transformed equivalently into a semi-closed slot, thereby unifying the semi-closed-slot and closed-slot algorithms and improving the adaptability of the closed-slot algorithm. The present method provides a general algorithm for closed-slot parameters, takes into account the edge effects caused by punching and shearing of cold-rolled silicon steel sheets, and is applicable to closed slots of various rotor slot types. Compared to finite-element methods, the present method has a short calculation cycle and is suitable for programmatic processing.

The invention discloses a range-extended electric aircraft power distribution system and a construction method, and the system constructs a graded power distribution network comprising four stages of protection devices through distributing different windings of a multi-winding motor to different load modules and combining the design of dual power sources of a battery pack and a range extender; by means of the design, independent power supply and fault isolation of winding power are achieved, and it is ensured that power is not completely lost under a single fault; and the dual power sources are backups for each other through an interconnection line, so that the power supply reliability is improved, and the power distribution at different flight stages is optimized. By adopting the technical means of multi-winding motor design and four-stage grading circuit protection, the technical problem that the safety and reliability of a power system of an electric aircraft are insufficient due to a single power supply or a motor fault is solved.

The invention discloses a power split type hybrid power tractor control method, system, equipment and medium, and relates to the technical field of mechanical equipment.The system comprises a continuously variable transmission, a power device, an auxiliary device and a transmission device, and the power device, the auxiliary device and the transmission device are connected with the continuously variable transmission; the continuously variable transmission comprises a planetary gear set, a first motor and a second motor; the power device comprises an internal combustion engine and a first clutch. The auxiliary device comprises a hydraulic pump, a PTO device and a third clutch. The transmission device comprises a second clutch and a transmission shaft. The planetary gear set and the dual-motor design of the continuously variable transmission are combined with the internal combustion engine and the clutch in the power device, so that the engine can always run in a high-efficiency interval, the fuel economy is remarkably improved, and the energy consumption is reduced.

The invention relates to a permanent magnet synchronous motor full-working-condition design method considering driver constraints, and belongs to the technical field of permanent magnet synchronous motor design, and the method comprises the following steps: building a mathematical model of a permanent magnet synchronous motor; calculating the electromagnetic relation of the motor in the constant torque maximum torque / current control mode; calculating the electromagnetic relation of the motor under the constant-power weak magnetic control; and according to the model and the electromagnetic relationship, carrying out full-condition design on the motor. Based on the mathematical model and the control mode of the permanent magnet synchronous motor, by analyzing the influence of the direct current bus voltage and the inverter circuit output current on the maximum rotating speed, the maximum torque and the current density of the motor, the constraint condition of the driver performance on the motor design can be determined. According to the method, whether the electromagnetic performance of the design scheme reaches the standard or not can be calculated and analyzed more quickly, and the design efficiency is improved.

The invention discloses a split embedded magnetic circuit optimization design process, and belongs to the technical field of motor design and manufacturing. According to the invention, a split embedded magnetic circuit optimization design process is adopted, and the embedded combination design of a high-resistance magnetic material and a high-permeability magnetic material is utilized, so that the cogging torque of the motor and the magnetic isolation groove structure of the permanent magnet rotor can be effectively improved, the magnetic circuit is optimized, the magnetic leakage is reduced, and meanwhile, the mechanical property is ensured.

The invention discloses a performance analysis method for a topological structure of a multi-topology axial flux permanent magnet motor based on electromagnetic-thermal coupling, and the method comprises the steps: firstly building three-dimensional electromagnetic finite element models of four typical axial flux permanent magnet motors, and calculating electromagnetic loss including iron core loss, copper loss and permanent magnet eddy current loss; importing the loss data into a three-dimensional fluid-thermal coupling model, and simulating the temperature rise of the motor under a natural cooling condition; the performance of the motor is subjected to double constraints of winding insulation and irreversible demagnetization temperature of a permanent magnet, so that the maximum current density of safe steady-state operation of the motor is determined and identified by adopting an iterative electromagnetic-thermal coupling analysis method, and the maximum torque density of each topological structure is evaluated under thermal constraints. The electromagnetic performance and the thermal constraint can be coupled, so that the optimal performance achieved by different axial magnetic flux permanent magnet motor topological structures can be compared, and the problem of inaccurate performance evaluation caused by neglect of the thermal constraint in the existing motor design is solved.

The invention discloses a motor multi-objective optimization design method and system based on a Kriging agent model. Comprising the following steps: constructing an initial data set through an experimental design method and finite element simulation calculation, so as to train an initial Kriging agent model which takes a motor design variable combination as an input variable and takes motor performance as an output response; the proxy model serves as a target function, a multi-target optimization problem is solved, the proxy model is updated, and an updating strategy is as follows: after each round of optimization is finished, a high-error solution in a current Pareto solution set is screened based on a Kriging model prediction mean square error, a finite element response of the high-error solution is obtained and supplemented to a data set, and the proxy model is updated and trained; and repeating the process until the optimization result converges. According to the method, high-uncertainty region samples are selectively supplemented, the calculation cost is remarkably reduced while the local prediction precision of the proxy model at the Pareto leading edge is improved, and the method has good practicability and economical efficiency.

The invention discloses a built-in self-starting permanent magnet synchronous motor magnetic field analytical algorithm based on an equivalent magnetic circuit and an analytical method, and relates to the field of motor design. A self-starting permanent magnet synchronous motor has a starting cage and rotor surface slotting, so that magnetic field distribution is complex, a magnetic field analysis model is difficult to establish in a polar coordinate system, and meanwhile, rotor surface slotting causes air-gap magnetic field distortion, so that a traditional path calculation method is insufficient in precision and low in calculation precision. Although the numerical simulation result is accurate, the consumed time is long and the efficiency is low in the optimization design process of the motor; therefore, the invention provides a new thought for magnetic field analysis research of the self-starting permanent magnet synchronous motor, an equivalent magnetic circuit method is adopted to model a rotor structure, an analysis method is adopted to model an air gap domain and a stator structure, coupling is realized through a magnetic field continuity relation of a rotor and an air gap interface, and a conformal transformation method is combined to obtain the self-starting permanent magnet synchronous motor. A magnetic field analysis calculation model considering rotor slotting is established, efficient and accurate calculation of the magnetic field of the self-starting permanent magnet synchronous motor is achieved, and the design, research and development period of the motor can be greatly shortened; according to the research thought, the flux density, harmonic analysis and cogging torque of the air gap domain can be obtained, the accuracy of the magnetic field analytical model is verified through comparison with a finite element method, and an analytical method is provided for subsequent electromagnetic design and structure optimization.

The invention discloses a unit cascade type motor speed regulation control compensation method and system, relates to the technical field of motor control, and solves the problems that during motor operation, temperature rise, magnetic saturation or load sudden change can cause dynamic parameter change, parameters are not identified in real time, the reluctance torque compensation error is large, and the stability of the motor is poor. And the motor speed regulation control compensation accuracy is influenced. The reluctance torque is strongly correlated with the difference value of the Ld-Lq, and the difference value of the Ld-Lq is influenced by the motor design and the working condition. The RLS can accurately quantify the nonlinear part of the reluctance torque through online identification of the Ld-Lq difference value, and the limitation of a traditional table look-up method or offline calibration is avoided. Through cross coupling of a d-q axis current loop, the RLS can decouple mutual influence among parameters by identifying inductance parameters at the same time, and the bandwidth of the current loop is improved; meanwhile, the temperature rise of the motor can cause inductance drift, and the compensation amount is adjusted by continuously monitoring the inductance change, so that the torque attenuation caused by the temperature rise is avoided.

The invention discloses a motor reverse design method and system based on a generative artificial intelligence model, and the method comprises the steps: combining a conditional variation auto-encoder with a generative adversarial network, training a neural network model, achieving the reverse design of a motor, and directly generating motor structure parameters through motor performance parameters; and a principal component analysis method is adopted to quantify the difference between data distribution and training set data distribution during application, a generation scheme smaller than a threshold value is abandoned, a final motor design model is obtained, and the accuracy of a generation result is ensured. According to the inverse design method disclosed by the invention, various appropriate motor parameters can be obtained through inverse calculation only by inputting the motor size and the target performance. Repeated work in the motor design process can be effectively avoided, and the labor cost and the time cost of motor design are greatly reduced.

The invention discloses a parametric modeling method for an outer rotor permanent magnet synchronous motor, and relates to the technical field of motor design, and the method comprises the steps: repeatedly calling modeling modules in finite element analysis software, and respectively defining the modeling modules as a stator modeling module and a magnetic steel modeling module; stator design parameters and a to-be-solved parameter calculation formula are written in the stator modeling module, the slot shoulder bottom width, the slot bottom width and the stator tooth width serve as to-be-solved parameters and have a geometric constraint relation, and all the to-be-solved parameters are obtained through calculation of related design parameters; magnetic steel parameters and numerical values are written in the magnetic steel modeling module; the stator modeling module and the magnetic steel modeling module are operated, an outer rotor permanent magnet synchronous motor assembling model is obtained, the rotor yoke surrounds the outer ring of the stator tooth part, and the magnetic steel is located between the rotor yoke and the stator tooth part. According to the method, the motor design model is quickly adjusted and optimized by changing the parameter values, the motor design precision is remarkably improved, and the research and development period is shortened.

An artificial intelligence (AI)-based motor development system for optimizing the design of a driving motor for a vehicle according to the present disclosure includes a prediction AI model generation part configured to predict motor performance improvement including noise / vibration / harshness (NVH), by fitting a polynomial curve to noise peak predictions, based on modified motor design variables obtained from the motor computer aided design (CAD) drawing. The system also includes a design parameter optimization AI model generation part configured to optimize motor design parameter dimensions from a design parameter optimization proposal AI model obtained through any one of reinforcement learning, Q-learning, and particle swarm optimization (PSO) using the prediction AI model as a feature extractor for target motor performance improvement.

A household appliance with an interior space to receive at least one object to be treated through an access opening, having a closing element to close and unblock the access opening from the front, and having a motor designed to move the closing element back and forth between a closed position and an open position. The motor is fixedly connected to a clutch disc by a motor shaft in order to rotatably drive the clutch disc, wherein the clutch disc is connected to the closing element in a force-transmitting manner by means of a clutch pin. The clutch disc has a clutch-side guide contour that movably receives a first end of the clutch pin, wherein the clutch-side guide contour of the clutch disc has a manual operation guide and a motor operation guide. The motor operation guide is formed by one end of the manual operation guide.

The invention discloses a motor temperature rise evaluation method, device and equipment and a medium. The invention relates to the technical field of motors, and the method comprises the steps: obtaining an electromagnetic parameter of a motor, and carrying out the preprocessing of the electromagnetic parameter, and obtaining an input electromagnetic parameter; the input electromagnetic parameters are input into a temperature rise evaluation model for temperature rise evaluation to obtain a temperature rise evaluation result, and the temperature rise evaluation model is obtained by training and testing a constructed multi-attention mechanism convolution model through a temperature rise data set. According to the method, the problem that the temperature rise evaluation process seriously depends on experience and knowledge of motor designers during existing motor design is effectively solved, and the accuracy of temperature rise evaluation is improved.

The application discloses a kind of construction methods of triangle permanent magnet magnetic field distribution model, the method is: the three-dimensional molecular ring current model of triangle permanent magnet is converted into two-dimensional analytical model, permanent magnet is uniformly magnetized, its body current is zero, the magnetic field at any field point in space is only generated by the closed current loop of permanent magnet surface, based on ampere molecular ring current hypothesis and molecular ring current model, application Biot-Savart law and magnetic field superposition principle, construct the external space magnetic field distribution model of triangle permanent magnet, the external space magnetic field distribution model of this two-dimensional permanent magnet array considers the distribution waveform and amplitude of the normal component of its external space magnetic flux density, optimize the permanent magnet monomer gap value of two-dimensional rectangular permanent magnet array, and the reliability and effectiveness of analytical formula are verified using finite element analysis results, and the distribution characteristics that external space magnetic flux density of triangle permanent magnet varies with this important motor design parameter, space air gap value are given.