350 results about "Torque ripple" patented technology

The invention discloses an open-phase self-fault-tolerant control method for a phase-shift-free dual three-phase permanent magnet synchronous motor. The method can automatically adjust a current distribution relation in the case of an open-phase fault and suppress torque pulsation in combination with neutral point voltage compensation. Comprising the following steps: driving two pairs of three-phase winding modules of the phase-shift-free DTP-PMSM in parallel by adopting two two-level three-phase voltage source inverters, and providing a mathematical model of the motor; current distribution is automatically adjusted; compensating the voltage of the neutral point, and calculating the offset of the fault module; the current is redistributed to suppress the torque ripple after the fault, and the secondary oblique wave component generated by the phase failure fault is eliminated; a current loop controller is improved through dead-beat predictive control; the speed ring controller is optimally designed into an improved sliding mode controller; an improved double-loop controller system is formed by combining improved sliding mode control and dead-beat prediction control, high-gain parameters are set to improve the dynamic response performance of the system, and a new self-fault-tolerant control system is formed.

The invention discloses an embedded motor torque ripple real-time compensation system based on deep learning, and relates to the technical field of motor control and artificial intelligence crossing, the system comprises a hardware data acquisition module, a signal feature extraction module, a deep learning compensation model module, an embedded real-time compensation module and a compensation effect verification module; a motor position and a current signal are acquired in real time through the hardware data acquisition module, dynamic analysis and multi-dimensional feature construction are performed on torque ripple related features by combining the signal feature extraction module, and the deep learning compensation model module learns a fluctuation rule in historical data by using a space-time sequence model to generate a high-precision compensation current. The model adapts to an embedded environment through lightweight design, real-time deployment and dynamic optimization of a compensation algorithm are achieved, compared with traditional PID control, the scheme can adapt to changes of motor operation conditions, the influence of torque fluctuation on system stability is reduced, and the smoothness and efficiency of motor operation are improved.

The invention relates to an anti-interference speed control method for a permanent magnet synchronous motor, in particular to the technical field of electrical engineering, and effectively solves the problem that the control performance of the permanent magnet synchronous motor is degraded due to model parameter drift and external load sudden change under complex working conditions. According to the method, the high robustness of sliding mode control and the rolling optimization characteristic of model prediction control are creatively fused, and an adaptive observer is introduced to estimate the system state and lumped disturbance online, so that the real-time feedforward compensation and active suppression of parameter uncertainty and disturbance are realized; according to the method, the dynamic response speed and the steady-state precision of the system are remarkably improved, the rotating speed fluctuation and the torque ripple are effectively inhibited, meanwhile, controller parameters are adaptively adjusted through an intelligent learning mechanism, the stability and the adaptability in long-term operation are ensured, and the method is suitable for large-scale popularization and application. The limitation that a traditional control strategy depends on an accurate model and the disturbance boundary is unknown is overcome fundamentally, and high-performance and high-robustness speed control is achieved.

The invention relates to the technical field of motor control, discloses a direct current brushless motor control method and system based on current prediction, and aims to solve the problems of large torque ripple, low efficiency and poor stability caused by current loop lag in the prior art. The method comprises the following steps: acquiring a motor operation state signal in real time; determining a sector and an electrical angular velocity based on the rotor position and the rotational speed; inputting related parameters into the mixed current prediction model to obtain a three-phase current prediction value of the next period; a prediction error is calculated in combination with a current instruction, and an optimal voltage vector enabling a cost function to be minimum is solved through a model prediction control algorithm; and finally, a space vector pulse width modulation signal is generated to drive an inverter. According to the method, advanced control is realized by fusing a physical model and a data-driven prediction mechanism, the torque ripple is remarkably reduced, and the energy efficiency and robustness are improved.

The invention relates to the technical field of motor control, and particularly provides a control method and system suitable for a one-way running motor of a two-wheeled electric vehicle. The method aims to solve the problems of unstable motor operation and insufficient reliability caused by torque pulsation in the prior art. The method comprises the following steps: executing off-line identification of motor parameters to obtain initialized parameters; multi-source operation state signals are collected, and a vehicle working condition judgment result is obtained through fusion analysis; performing fault diagnosis and grading evaluation to form a fault-tolerant instruction; dynamic dead zone compensation and self-adaptive overmodulation are implemented by combining the parameters and the working conditions, and an optimization control instruction is output; generating a PWM driving signal through space vector modulation; and responding to the fault-tolerant instruction, and fusing a sensorless algorithm and a health sensor signal to realize degraded operation. According to the invention, the smoothness and efficiency of motor operation and the fault-tolerant capability of the system are effectively improved.

The invention relates to the field of motor structure design and optimization, and discloses a cogging torque and torque ripple optimization method for a permanent magnet motor for a vehicle. The method comprises the steps that based on an electromagnetic scheme, a geometric boundary and a term dictionary, a parameterized geometric prototype containing four symmetric semi-arc auxiliary grooves is constructed, and a design variable set structure is generated; converting the structure into a target evaluation interface structure containing a target item and a constraint item; an improved adaptive particle swarm algorithm is combined with finite element rapid check and a new iteration function to carry out optimization solution, and an updated candidate group structure is generated; and finally, optimal parameters are screened through Pareto sorting and robustness recheck, and an engineering configuration structure is generated. According to the method, through systematic parameter modeling, an efficient collaborative optimization algorithm and simulation evaluation, the optimization efficiency and reliability are remarkably improved, the cogging torque and the torque ripple of the motor are effectively reduced, and meanwhile, the process feasibility and the performance robustness of a design scheme are ensured.

The invention discloses a current prediction control method and device for a permanent magnet motor, and the method achieves the real-time prediction of a voltage error caused by a dead zone and other non-ideal factors through the powerful nonlinear fitting capability of a feedforward neural network in combination with the learning of historical current time sequence characteristics. And the prediction error is further fed forward and compensated to a future current prediction model to improve the accuracy of current prediction, so that the cost function evaluation is more accurate, the optimal voltage vector is selected, and the steady-state current error and the low-speed torque ripple are effectively inhibited. In this way, precise control over the current of the motor is achieved, and the control precision and operation stability of the driving system are comprehensively improved.

The invention discloses a permanent magnet synchronous motor model prediction control method based on multi-target Pareto optimum, which comprises the following steps: measuring two-phase current, motor rotating speed and rotor position of a permanent magnet synchronous motor, converting the two-phase current into d-axis current and q-axis current according to the rotor position, and converting an alternative voltage vector of an inverter into d-axis voltage and q-axis voltage at the same time; inputting the d-axis current, the q-axis current, the d-axis voltage, the q-axis voltage and the rotating speed of the motor into a current prediction model of the permanent magnet synchronous motor, and predicting a future current state value; establishing a multi-target optimization model including torque ripple, current total harmonic distortion, switching frequency and power loss, calculating by using a multi-target particle swarm algorithm in combination with non-dominated sorting and congestion distance to obtain a Pareto optimal solution set, obtaining an optimal weight factor, and automatically adjusting target weights according to motor operation states under different operation conditions; and constructing a cost function based on the optimal weight factor, and selecting a voltage vector enabling the cost function to be minimum as optimal control output.

The invention provides a rotor punching sheet, a rotor iron core, a rotor, a motor and an air conditioner, the rotor punching sheet is provided with more than two magnetic pole forming areas corresponding to rotor magnetic poles, and each magnetic pole forming area is internally provided with a magnetic steel groove which is arranged on a q axis and extends along the radial direction; the rotor punching sheet is provided with a first magnetic barrier groove located on the d axis between every two adjacent magnetic steel grooves. Wherein first magnetic bridges are formed between the first magnetic barrier grooves and the adjacent magnetic steel grooves on the two sides, and the width of each first magnetic bridge is gradually increased in the radial outward direction of the rotor punching sheet. According to the technical scheme of the invention, the magnetic lines of force can be gradually drawn close to the d axis from the two sides of the d axis, and the sinusoidal property of the magnetic flux in the air gap is better, so that the torque pulsation of the tangential motor can be reduced.

The invention discloses a model prediction control method for a low-common-mode-voltage dual three-phase motor with improved steady-state performance, and belongs to the technical field of dual three-phase permanent magnet synchronous motor control. The method comprises the following steps: firstly, suppressing harmonic current by synthesizing virtual voltage vectors with a specific duty ratio, and synthesizing a candidate output voltage vector by using two adjacent virtual voltage vectors according to a predefined duty ratio; designing a value function without a weight coefficient to select an optimal voltage vector; designing a dual duty ratio technology to calculate the duty ratios of the two virtual voltage vectors for synthesizing the optimal voltage vector; a specific switching sequence in which virtual zero vectors are arranged on two sides and in the middle of a control period is designed, and the switching sequence is generated by using a phase-shifting carrier method. According to the invention, the common-mode voltage can be effectively reduced without adding any hardware circuit, the current harmonic wave and the torque ripple are obviously reduced by expanding the modulation range, the steady-state performance of the system is improved, and the method is suitable for a dual three-phase motor driving system with high requirements on performance and reliability.

The invention provides a multilayer claw pole rotor and a motor. The multilayer claw pole rotor comprises at least two layers of claw pole rotor units. The claw pole rotor unit comprises a first rotor, a second rotor and a magnetic disk, the first rotor comprises a first rotor main body and a first claw, the second rotor comprises a second rotor main body and a second claw, and the first claw axially extends to the periphery of the second rotor main body towards the direction of the second rotor. The second claw also axially extends to the periphery of the first rotor main body towards the direction of the first rotor; in the projection plane of the axial end face of the first rotor, the circle center of each first claw does not coincide with the circle center of the first rotor, an eccentric distance e exists between the circle center of the peripheral face of each first claw and the circle center of the first rotor, the multiple first claws are provided with a first circumscribed circle, the radius between the circle center of the first rotor and the first circumscribed circle is R1, and the eccentric distance e meets the requirement that e is larger than 0.2 R1 and smaller than 0.7 R1. According to the invention, the problem of low utilization rate of a permanent magnet material of a permanent magnet motor in the prior art can be solved, and the problem of large torque pulsation is also solved.

This invention discloses a highly generalizable method for diagnosing open-circuit faults in multi-transistor converters of motor drive systems. This method addresses open-circuit faults in power devices caused by overcurrent surges, poor heat dissipation, and other factors, preventing damage to the motor and power grid equipment caused by output current distortion and increased torque ripple. The method analyzes the retention characteristics of the positive and negative regions of the three-phase stator current under steady-state operating conditions to construct a fault location function, and combines auxiliary variables to accurately distinguish between single-power and dual-power device open-circuit faults. This invention enables rapid location and accurate identification of complex open-circuit faults such as those in opposite phases on the same side or in opposite phases on opposite sides. It offers advantages such as high diagnostic accuracy, strong ability to distinguish mixed faults, and non-invasiveness, making it suitable for motor drive systems with high requirements for operational reliability and fault tolerance.

The utility model discloses a stator assembly, a motor and a vehicle. The stator assembly comprises an iron core part, a cover plate and a plurality of tooth boots. The iron core part comprises a plurality of iron cores and a plurality of coils, the iron cores are arranged at intervals in the circumferential direction of the stator assembly, and the coils are arranged on the iron cores respectively. The number of the cover plates is two, the two cover plates are arranged on the two opposite sides of the iron core part in the axial direction of the stator assembly respectively, a plurality of installation holes and a plurality of installation grooves are formed in the cover plates, and the installation holes correspond to the iron cores in a one-to-one mode and are used for fixing the iron cores. The plurality of tooth boots are respectively arranged in the plurality of mounting grooves, and the tooth boots correspond to the opening grooves between the two adjacent iron cores in the axial direction. According to the invention, the arrangement of the tooth boots can reduce the opening size of the open slot between the two adjacent iron cores, thereby reducing the leakage reactance of the slot and the tooth harmonic of the gap flux density, improving the torque pulsation of the motor, and improving the operation stability of the motor.

The application discloses a kind of humanoid robot linear joint permanent magnet motor design optimization method, this method includes: based on the mechanical characteristics of human gait cycle to establish knee joint connecting rod mechanism dynamics model, extract characteristic working condition point and establish screw-motor electromechanical matching criterion, using Latin hypercube sampling to obtain design sample point, establish permanent magnet motor multi-objective optimization model with limit torque, torque ripple, efficiency as target, then introduce evolutionary algorithm for global optimization, obtain Pareto non-inferior solution set;Finally, based on CRITIC-TOPSIS evaluation method, fusion objective data characteristics and subjective working condition demand, determine the optimal design scheme from Pareto non-inferior solution set.The design optimization method of the application can define the design requirements of permanent magnet motor, and can also scientifically distribute the target weight, ultimately can obtain the permanent magnet motor scheme highly matched with specific joint working condition, effectively improves the power performance and operating stability of humanoid robot linear joint.

The invention relates to a method for measuring torque using a torque sensor integrated in a robot arm joint (17), comprising the following method steps: in a calibration step, measuring torque using the integrated torque sensor and determining the position, speed and acceleration of a rotating element of the joint during idle rotation of the joint, thereby obtaining training data; -in a training step, performing a linear regression analysis to obtain a correction function indicative of the intrinsic dynamics of the robot arm joint, where the correction function is a linear combination of at least four basis functions: i. At least one friction torque basis function comprising a first speed dependent sigmoid function and / or a speed dependent linear function; and ii. At least one torque ripple basis function comprising a first position dependent periodic function; and iii. At least one inertial basis function comprising a first acceleration dependent linear function; and iv. At least one torque offset basis function, which is a constant; -in an operational measurement step, measuring the torque using the integrated torque sensor under load conditions and obtaining a corrected torque value on the basis of the measured torque value and a correction function.

The application discloses a high-precision model prediction current control system and control method of a double three-phase motor, and relates to the technical field of multiphase motor control. The application extends the traditional 12 virtual voltage vector control set, designs 24 virtual voltage vectors with equal amplitude and uniform phase angle under the premise of not losing voltage utilization rate, and improves control precision. A duty cycle calculation method based on minimum error is proposed, which can track the currents of d-axis and q-axis at the same time even in the case of a single effective virtual voltage vector, and guarantees optimal output duty cycle. In addition, the process of traversing all voltage vectors in the prediction control is simplified, and the calculation burden of the algorithm is reduced. The application improves the precision of model prediction control by extending the control set and reducing the calculation error of the duty cycle, reduces 5th and 7th harmonics, and improves torque ripple. Moreover, even under the action of 24 voltage vectors, the calculation amount is still low, and the execution efficiency of the algorithm is improved.

Provided in the present application are a rotor lamination and a forming method therefor, a rotor iron core, a servo motor and a robot. The rotor lamination comprises a lamination body (1), the lamination body (1) having a rotor outer circumference (2); under one pole, the rotor outer circumference (2) of the lamination body (1) is provided with a groove (3) recessed inwards relative to the rotor outer circumference (2) and / or a protrusion (4) protruding outwards relative to the rotor outer circumference (2). According to the rotor lamination of the present application, the stamping precision of the outer contour of the rotor lamination can be improved, allowing a reduction in the cogging torque and torque ripple of the electric motor, and thereby improving the positioning accuracy of the robot.

To secure reduction effect on noise caused by torque ripple, while reducing leakage of a magnetic flux.SOLUTION: A rotor 100 according to an embodiment includes a rotor shaft, a plurality of permanent magnets, and a rotor core 120. Formed in the rotor core 120 are a wide-angle flux barrier band 130 having wide-angle FBB openings 132, 133 or a narrow-angle flux barrier band 140 having narrow-angle FBB openings 142, 143, which has a plurality of electromagnetic steel plates and is formed in a substantially projecting shape with respect to a rotation center axis in the magnetic pole. Each of a circumferential angle Θ1a and a circumferential angle Θ1b formed by two wall surfaces of the wide-angle FBB openings and a d-axis is larger than each of a circumferential angle Θ2b and a circumferential angle Θ2b formed by two wall surfaces of the narrow-angle FBB openings and the d-axis, and Θ1b is larger than Θ1a.SELECTED DRAWING: Figure 8

This invention relates to a low-current harmonic direct torque control method for a dual three-phase permanent magnet synchronous motor (PMSM), belonging to the field of PMSM control technology. The method is as follows: S1: Establish mathematical models of the fundamental and harmonic subspaces of the dual three-phase PMSM under vector space decoupling, and clarify the voltage vector distribution characteristics of the two subspaces; S2: In the fundamental subspace, design a duty cycle modulation strategy based on the principle of minimizing the error vector, and an improved deadbeat flux linkage torque controller; S3: In the harmonic subspace, design an online learning harmonic canceller, using the least mean square algorithm to update the weight coefficients in real time; S4: Select the D1 vector set as the effective vector of the harmonic subspace and perform sector division; S5: Add the effective voltage vector action time of the fundamental and harmonic subspaces to generate the final switching sequence, which is output to the dual three-phase inverter to effectively suppress torque ripple and harmonic current of the dual three-phase PMSM.

The present application relates to a kind of large-diameter low magnetic resistance moment online balancing structure, including installation and removal mechanism, stator, rotor and shafting support mechanism, installation and removal mechanism is installed on stator, rotor is embedded stator and is connected with shafting support mechanism through rotor connecting seat after stator;Stator includes stator core assembly, stator housing and stator fixing frame, stator core assembly includes stator magnetic conducting ring and core positioning block, stator magnetic conducting ring with core positioning block is installed in stator housing, stator housing is clamped on stator fixing frame, stator housing and stator fixing frame are respectively provided with the stator housing processing gap and the stator fixing frame processing gap of adjusting stator magnetic conducting ring.Stator housing processing gap and stator fixing frame processing gap are adjusted to stator magnetic conducting ring by balancing structure, so that magnetic resistance moment reaches uniform condition in 360 ° circumference range.The present application balancing method realizes the effective control of magnetic resistance moment, inhibits the generation of torque ripple and noise, so as to improve the overall performance and survival rate of motor.

The invention provides a fault-tolerant control method and system for open-phase faults of a four-phase and three-phase permanent magnet synchronous motor, electronic equipment and a storage medium. Belongs to the technical field of motor control. The method is based on a 4DQ decoupling control framework, and an open-phase fault-tolerant control module is additionally arranged between a speed loop and a current loop. When the open-phase fault of the motor is detected, the module firstly identifies the number of sets of faulty windings, cuts off control signals of the faulty sets of windings, then averagely distributes q-axis total reference current output by a speed ring to the remaining healthy three-phase windings again according to the number of the faulty sets, and carries out necessary amplitude limiting processing. And finally, the current loop controller of each healthy winding drives the inverter to work according to the redistributed reference current. According to the invention, the structural advantage of independent isolation of the four-phase and three-phase motor windings is fully utilized, and the torque ripple is effectively suppressed and the stable operation of the motor is maintained through overload or derating operation of a healthy winding under the condition that a single set or multiple sets of windings have faults.

The utility model discloses a converter system, and relates to the technical field of vehicle engineering. The converter system comprises a converter body formed by cascading a plurality of same basic power subunits, the input end of the converter body is used for being directly connected with a single-phase traction network, and the output end of the converter body is used for independently driving a plurality of traction motors. The output end of the converter body is provided with a three-phase output filter capacitor. According to the converter system, the basic power subunits are cascaded to form the converter main body, so that the current-carrying capability and the voltage endurance capability can be improved; and the output end of the converter main body is provided with a three-phase output filter capacitor, so that when the transformer main body outputs voltage to drive the traction motor, the torque ripple and electromagnetic noise of the traction motor can be reduced.

The application discloses a low-pulsation inverse-cosine plus third-harmonic auxiliary salient pole type radial permanent magnet motor and a method for optimizing air gap harmonics, and belongs to the technical field of motor manufacturing. A novel radial permanent magnet synchronous motor with inverse-cosine plus third-harmonic auxiliary salient poles is provided, and the method can suppress air gap flux density harmonics and reduce torque ripple and average torque loss. The specific process is as follows: the rotor air gap flux density is proportional to the rotor magnetomotive force, and the main air gap flux density harmonic order affecting the torque ripple is determined. The inverse-cosine plus third-harmonic method is used to modify the auxiliary salient poles, so as to reduce the air gap flux density harmonics, especially the 9th, 11th, 19th and 21st harmonics causing the first and second order torque ripples, thereby reducing the torque ripple; since the third harmonic is not the main air gap flux density harmonic causing the torque ripple, the injection of the third harmonic can reduce the average torque loss.

The present invention relates to a drive control device for a synchronous motor. To provide a drive controller of a synchronous motor capable of suppressing torque ripples of sixth order, twelfth order, etc., which cannot be suppressed by a basic drive controller.SOLUTION: The drive control device of the synchronous motor comprises at least a means for generating a final current command value for suppressing a specified torque ripple and a current control means for performing discrete time control of a stator current so as to follow the final current command value, wherein a discrete time compensating current controller arranged in parallel to a PI current controller and having a pole on a unit circle with a zero point as an origin and multiplying a control gain and a control period by a control deviation is added to the discrete time current controller being a central device of the current control means.SELECTED DRAWING: Figure 5

This invention discloses a torque-stable two-phase brushless DC motor and its control method. The two-phase brushless DC motor includes a stator and a rotor. The stator includes a stator core and 4*n stator windings surrounding the stator core. The rotor includes a rotor core and 6*n permanent magnet poles surrounding the rotor core, where n is a positive integer, and adjacent permanent magnet poles have opposite polarities. This invention features high stator winding utilization efficiency, reduces the weight of the brushless DC motor, and exhibits low torque ripple, making it suitable for applications requiring continuous power output.

This application discloses a motor harmonic suppression method based on parallel PR controllers. The method includes: acquiring the real-time speed of the motor, the D-axis error current, and the Q-axis error current; determining the switching status of each PR controller based on the real-time speed and the corresponding lower and upper speed limits; inputting the D-axis error current and Q-axis error current into the activated PR controller to obtain the D-axis harmonic compensation voltage and Q-axis harmonic compensation voltage; inputting the D-axis error current and Q-axis error current into the corresponding D-axis current loop controller and Q-axis current loop controller to obtain the D-axis voltage and Q-axis voltage; adding the D-axis harmonic compensation voltage and the D-axis voltage to obtain the D-axis target voltage; adding the Q-axis harmonic compensation voltage and the Q-axis voltage to obtain the Q-axis target voltage; and generating a control signal for driving the motor based on the D-axis target voltage and the Q-axis target voltage. This effectively reduces torque ripple and noise caused by motor current harmonics.

The present application belongs to the field of permanent magnet synchronous motor control technology, and relates to a kind of permanent magnet synchronous motor torque ripple compensation control method, comprising: acquisition stator phase current and cross axis given current, generate cross axis and straight shaft feedback current by coordinate rotation transformation;Extract cross axis and straight shaft harmonic current;According to the period difference of cross axis current feedback residual error, calculate cross axis time delay distortion coefficient;The coefficient is in situ input coordinate rotation transformation correction rotor electric angle, and combine electric angle change rate to calculate phase angle advance compensation angle;Using the angle to calibrate harmonic current space phase to synthesize offset current instruction and superimposed output, the present application eliminates control loop timing response lag, makes compensation current maintain spatial orthogonal state with rotor harmonic magnetic field under variable speed condition, avoid positive feedback excitation, guarantee the steady convergence and stability of closed loop.

The application discloses a kind of stator assembly and axial magnetic field motor, the stator assembly includes stator shell, stator core, coil, pole shoe and stator cover plate, stator core, coil and pole shoe are arranged in the space formed by stator shell and stator cover plate;Coil is arranged in the opening slot of stator core;Pole shoe is fixed on stator cover plate, when stator cover plate and stator shell butt joint, pole shoe can be arranged at the slot opening of opening slot.The stator core in the application has opening slot, which facilitates the installation of the coil, at the same time, the pole shoe is fixed on the stator cover plate, when the stator cover plate and the stator shell butt joint, the pole shoe corresponding to the slot opening of the opening slot can reduce the tooth harmonic of the motor, reduce the iron loss of the motor, improve the efficiency of the motor, and reduce the torque ripple of the motor. Since the pole shoe is carried on the stator cover plate, during assembly, after directly butt jointing the stator cover plate and the stator shell, the pole shoe can be matched with the opening slot, thereby improving the production efficiency of the motor.

The utility model discloses a fractional-slot concentrated winding outer rotor permanent magnet motor, which comprises an inner stator assembly positioned on the inner periphery and an outer rotor assembly positioned on the outer periphery, and is characterized in that a winding of the inner stator assembly adopts a fractional-slot concentrated winding structure; the outer rotor assembly comprises a plurality of permanent magnets which are fixedly arranged on the inner side wall surface of the motor shell and are uniformly and circumferentially distributed at intervals, and a first permanent magnet surface, adjacent to the winding, of each permanent magnet is in an arc-shaped convex shape relative to the winding; the distance between the first permanent magnet surface protruding point located in the middle and the winding is larger than the distance between the first permanent magnet surface protruding point located in the non-middle position and the winding. According to the utility model, harmonic waves and torque pulsation of the fractional-slot concentrated winding outer rotor permanent magnet motor are substantially weakened, magnetic noise during operation of the motor is reduced, a vibration value during operation of the motor is reduced, and the service life of the motor installation structure is prolonged; and the rotation of the motor is smoother.

The application provides a self-starting synchronous reluctance motor, which comprises a stator assembly and a rotor assembly, the rotor assembly comprises a rotor core and a squirrel cage winding, the rotor core is stacked by a plurality of rotor laminations, the rotor laminations comprise filling slots, slit slots and shaft holes, the filling slots comprise non-independent filling slots located at both ends of the slit slots and independent filling slots located at the outer periphery of a q-axis; the stator assembly comprises a stator core stacked by stator laminations; the stator laminations comprise a plurality of stator slots, the central angle between the radially outermost end of the non-independent filling slots located at the adjacent two sides of a d-axis and the center of the rotor is a1, the central angle between a stator tooth and the center of the rotor is a2, and the following conditions are met: when Z is greater than or equal to 30, a1 is greater than a2; when Z is less than 30, a1 is less than a2. According to the application, the relationship between the magnetic flux channel and the stator slot can be effectively changed, the tooth slot effect and the current harmonic can be reduced, the torque ripple can be reduced, and thus the motor vibration noise can be reduced.