CN114614590A

CN114614590A - Self-starting synchronous reluctance motor rotor and motor

Info

Publication number: CN114614590A
Application number: CN202210092197.0A
Authority: CN
Inventors: 陈彬; 胡余生; 肖勇; 史进飞; 李霞; 李莹
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-06-10

Abstract

The invention provides a self-starting synchronous reluctance motor rotor and a motor, wherein the self-starting synchronous reluctance motor rotor comprises a rotor punching sheet, a plurality of filling grooves, slit grooves and shaft holes are arranged on the rotor punching sheet, and under a half pole, the peripheral end part of at least one filling groove, which is opposite to the excircle of the rotor, is bent in the direction far away from a d axis or in the direction towards the d axis to form a bent edge. According to the invention, the position relation between the magnetic conduction channel and the stator tooth grooves can be effectively changed, and the tooth groove effect can be effectively reduced, so that the current harmonic wave is reduced; the torque ripple can be reduced by reducing the current harmonic wave, so that the vibration noise of the motor is reduced; the chamfered edge is arranged at a certain angle, so that the harmonic wave reducing effect is more obvious.

Description

Self-starting synchronous reluctance motor rotor and motor

Technical Field

The invention relates to the technical field of motors, in particular to a self-starting synchronous reluctance motor rotor and a motor.

Background

The self-starting synchronous reluctance motor combines the structural characteristics of an induction motor and a reluctance motor, realizes starting by generating torque through cage induction, realizes constant-speed operation by generating reluctance torque through the difference of rotor inductance, and can be directly connected with a power supply to realize starting operation. Compared with an asynchronous starting permanent magnet motor, the self-starting synchronous reluctance motor has the advantages of no rare earth permanent magnet material, no demagnetization problem, low motor cost and good reliability.

However, the rotor of the self-starting reluctance motor is provided with a plurality of magnetic conduction channels, so that the magnetic field and the input current harmonic wave of the motor are large, the torque pulsation is large, and the electromagnetic vibration noise of the motor is large.

In the prior art, an asymmetric rotor structure is adopted in patent CN 207320974U to effectively suppress or reduce electromagnetic noise and electromagnetic vibration of a reluctance motor caused by torque ripple; however, the asymmetric rotor structure also introduces new harmonics, which may cause an increase in electromagnetic vibration noise, and the effect is not obvious.

Because the self-starting reluctance motor in the prior art has the technical problems of large current harmonic wave, large torque ripple and the like, the invention researches and designs a self-starting synchronous reluctance motor rotor and a motor.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defects of large current harmonic wave and large torque ripple of the self-starting reluctance motor in the prior art, thereby providing a self-starting synchronous reluctance motor rotor and a motor.

In order to solve the problems, the invention provides a self-starting synchronous reluctance motor rotor which comprises a rotor punching sheet, wherein a plurality of filling grooves, slit grooves and shaft holes are formed in the rotor punching sheet, and under a half pole, the peripheral end part, opposite to the outer circle of the rotor, of at least one filling groove is bent in the direction far away from the d axis or in the direction towards the d axis to form a bent edge.

In some embodiments, the outer circumferential end of at least one of the filling grooves, which is opposite to the outer circle of the rotor, is provided with a chamfered edge, and the included angle between the bent edge or the chamfered edge of the filling groove and the straight edge of the filling groove in the extending direction is θ; theta > 100 DEG is satisfied.

In some embodiments, the angle θ satisfies 130 ≦ θ ≦ 160.

In some embodiments, an outer circumferential end portion of the filling groove opposite to the outer circumference of the rotor satisfies 0.4 × d1 ≦ d2 ≦ 0.8 × d1 between a width d2 after being cut by the chamfered edge and a width d1 of the outer circumferential end portion before being cut.

In some embodiments, the filling grooves include a non-independent filling groove provided on the same layer as the slit groove, and an independent filling groove not provided on the same layer as the slit groove, the independent filling groove being located on the outer periphery of the rotor in the q-axis direction and being provided close to the outer periphery of the rotor with respect to the non-independent filling groove.

In some embodiments, a magnetic conductive channel exists between two adjacent ones of the dependent filling grooves, a width of the magnetic conductive channel along the q-axis direction between positions of the two adjacent dependent filling grooves closest to the outer peripheral end of the rotor is d4, a width of the magnetic conductive channel along the q-axis direction between positions of the two adjacent dependent filling grooves closest to the slit groove is d3, and at least two adjacent dependent filling grooves exist between d4 ≠ d 3.

In some embodiments, the filling grooves are distributed on the periphery of the rotor relative to the slit grooves, the non-independent filling grooves are positioned at two ends of the slit grooves, and the filling grooves extend along the direction of the d axis; d4 > d 3.

In some embodiments, a plurality of the fill slots are symmetrically arranged about an axis d; and/or a plurality of said filled slots are symmetrically arranged about the q-axis.

In some embodiments, the slit grooves include arc sections and/or straight sections, the arc sections between the slit grooves are gradually increased in arc from the shaft hole side to the rotor outer circumferential side, and the outer arc of the slit groove on the same layer is greater than the inner arc, and the slit groove is overall shaped to be convex outward away from the rotor center.

In some embodiments, the width of the slot gradually increases from the q-axis center to both sides, i.e., d5 < d6, wherein the slot width is defined as: and the shortest distance from each point on one side of the two sides of the slit groove to the other side, wherein d5 is the width of the slit groove relatively close to the q-axis center, d6 is the width of the slit groove relatively far from the q-axis center, and the ratio of the maximum value to the minimum value of the width of each slit groove in the q-axis direction is less than 1.3.

In some embodiments, a magnetic conduction channel exists between the two slit grooves, the width of the magnetic conduction channel gradually increases from the center of the q-axis to two sides, that is, from the q-axis to two sides of the q-axis, that is, along the extending direction of the d-axis, and the width of the magnetic conduction channel is defined as: the shortest distance from each point on one side edge of the two side edges of the magnetic conduction channel to the other side edge; and the width of each magnetic conduction channel in the q-axis direction gradually decreases towards the direction far away from the d-axis.

In some embodiments, the minimum width d7 of the magnetic conduction channel between the slit grooves is less than or equal to the minimum width d8 of the magnetic conduction channel between the filling grooves at two ends of the slit groove, namely d7 ≦ d 8.

In some embodiments, a dividing rib is arranged between the non-independent filling groove and the slit groove, the slit groove and the non-independent filling grooves at two ends of the slit groove form a magnetic barrier layer, the distance between the side edge of the dividing rib close to the outer circle side of the rotor in two adjacent magnetic barrier layers along the d-axis direction is W, the distance between the magnetic conduction channel formed between the side edges of the non-independent filling grooves in the two adjacent magnetic barrier layers respectively close to the dividing rib along the q-axis direction is d9, and W is more than or equal to 0 and less than 2 d 9.

In some embodiments, 0 ≦ W < d9 is satisfied.

In some embodiments, the slit groove and the non-independent filling grooves at two ends of the slit groove are divided by a dividing rib, and the width L1 of the dividing rib satisfies that: l1 is more than or equal to 0.5 sigma, and sigma is the width of the air gap between the stator and the rotor.

In some embodiments, the minimum distance between the filling groove and the outer circle of the rotor is L2, and the minimum distance satisfies 0L 22 sigma, wherein sigma is the width of an air gap between the stator and the rotor.

In some embodiments, the angle alpha between the two ends of the independent filling groove and the connecting line of the center of the rotor is more than or equal to 20 degrees and less than or equal to 60 degrees.

In some embodiments, the rotor structure comprises a rotor core and a squirrel cage, wherein the rotor core is formed by axially laminating rotor sheets; and/or the presence of a gas in the gas,

at least part of the filling grooves are filled with conductive and non-conductive materials, and the end rings at the two ends of the rotor realize self short circuit to form a squirrel cage.

The invention also provides a motor which comprises a synchronous reluctance motor rotor structure, wherein the synchronous reluctance motor rotor structure is the self-starting synchronous reluctance motor rotor in the former item.

The self-starting synchronous reluctance motor rotor and the motor provided by the invention have the following beneficial effects:

the outer peripheral end part opposite to the outer circle of the rotor is bent towards the direction far away from the d axis or towards the d axis to form a bent edge, and the outer peripheral end part of the filling groove opposite to the outer circle of the rotor is provided with the chamfered edge, so that the position relation of the magnetic conduction channel and the tooth groove of the stator can be effectively changed, the tooth groove effect can be effectively reduced, and the current harmonic wave can be reduced; the torque ripple can be reduced by reducing the current harmonic wave, so that the vibration noise of the motor is reduced; the chamfered edge is arranged at a certain angle, so that the harmonic wave reducing effect is more obvious.

Drawings

Fig. 1 is a structural diagram (one pole, semicircular structure) of a rotor sheet of a self-starting synchronous reluctance motor according to a first embodiment of the present invention;

fig. 2 is an axial view of a self-starting synchronous reluctance motor rotor according to a first embodiment of the present invention;

fig. 3 is a structural diagram (one pole, semicircular structure) of a rotor sheet of a self-starting synchronous reluctance motor according to a second embodiment of the present invention;

fig. 4 is a graph comparing current waveforms for the rotor structure of the present invention and the prior art.

The reference numerals are represented as:

1. rotor punching sheets; 10. the outer circle of the rotor; 2. filling the groove; 20. an outer peripheral end portion; 21. non-independent filled trenches; 22. independently filling the grooves; 23. straight sides; 3. a slit groove; 4. a shaft hole; 5. bending the edges; 6. chamfering edges; 7. cutting ribs; 8. an end ring; 9. and a magnetic conduction channel.

Detailed Description

As shown in fig. 1 to 4, the present invention provides a self-starting synchronous reluctance motor rotor, which includes a rotor sheet 1, wherein the rotor sheet 1 is provided with a plurality of filling grooves 2, slit grooves 3 and a shaft hole 4, and under a half pole, an outer circumferential end 20 of at least one filling groove 2, which is opposite to an outer circle 10 of the rotor, is bent in a direction away from a d-axis or in a direction toward the d-axis to form a bent edge 5.

The invention has proposed a kind of self-starting synchronous reluctance machine rotor structure, its rotor structure includes rotor core and squirrel cage, the rotor core is laminated by the rotor punching, as shown in figure 1 is the rotor punching structure chart of the first embodiment of the invention, there are multiple filling grooves 2 and slit grooves 3 and shaft hole 4 cooperating with spindle on the rotor punching 1, characterized by that, under the half pole, at least one filling groove is close to the peripheral end and bending towards the direction far away from d axle or close to d axle; further, at least one filling groove is provided with a chamfered edge near the peripheral end, and the angle between the bent edge or the chamfered edge of the filling groove and the upper edge or the lower edge of the corresponding filling groove is theta.

The invention provides a rotor structure of a self-starting synchronous reluctance motor, which solves the problems of large current harmonic wave and large torque pulsation of the self-starting synchronous reluctance motor.

1. The chamfered edge is arranged at the outer end part of the filling groove, and the end part of the partial filling groove is bent, so that the cogging effect is effectively reduced, and the harmonic wave is reduced;

2. the chamfered edge is arranged at a certain angle, so that the harmonic wave reducing effect is more obvious;

3. the electromagnetic force and torque pulsation caused by harmonic waves are reduced, and the vibration noise of the motor is reduced.

The invention provides a self-starting synchronous moving reluctance motor rotor structure, which changes the position relation between a magnetic conduction channel and a stator tooth groove by arranging a chamfered edge at the outer end part of a filling groove and bending the end part of a partial filling groove, effectively reduces the tooth groove effect, reduces the harmonic wave and further reduces the vibration noise of a motor.

In some embodiments, the outer circumferential end 20 of at least one filling groove 2 opposite to the outer circle 10 of the rotor is provided with a chamfered edge 6, and the included angle between the bent edge 5 or the chamfered edge 6 of the filling groove 2 and the straight edge 23 of the extending direction of the filling groove 2 is theta; theta > 100 DEG is satisfied.

In some embodiments, the angle θ satisfies 130 ≦ θ ≦ 160.

The angle between the bent edge or the chamfered edge of the filling groove and the upper edge or the lower edge of the corresponding filling groove is theta, and theta is more than 100 degrees; more preferably, the angle theta 1 meets the condition that theta is more than or equal to 130 degrees and less than or equal to 160 degrees; the chamfered edge is arranged at the outer end part of the filling groove, and the end part of the filling groove is bent, so that the position relation between the magnetic conduction channel and the stator tooth groove is changed, the tooth space effect is effectively reduced, and the current harmonic wave is reduced. As shown in FIG. 4, after the technology of the invention is adopted, the sine degree of the current waveform is good, and the harmonic wave is obviously reduced.

In some embodiments, the outer peripheral end 20 of the filling groove 2 opposite to the outer rotor circle 10 satisfies 0.4 × d1 ≦ d2 ≦ 0.8 × d1, more preferably 0.55 × d1 ≦ d2 ≦ 0.65 × d1, between the width d2 cut by the chamfered edge 6 and the width d1 of the outer peripheral end 20 before being cut. According to the invention, d1 and d2 meet a certain width requirement, so that the cogging effect is better.

In some embodiments, the filling grooves 2 include a non-independent filling groove 21 provided in the same layer as the slit groove 3, and an independent filling groove 22 not provided in the same layer as the slit groove 3, the independent filling groove 22 being located on the outer periphery of the rotor in the q-axis direction and being provided close to the outer periphery of the rotor with respect to the non-independent filling groove 21;

a magnetic conductive path 9 is present between two adjacent ones of the non-independent filling grooves 21, a width of the magnetic conductive path 9 along the q-axis direction between positions of the two adjacent ones of the non-independent filling grooves 21 closest to the outer peripheral end of the rotor is d4, a width of the magnetic conductive path 9 along the q-axis direction between positions of the two adjacent ones of the non-independent filling grooves 21 closest to the slit groove 3 is d3, and at least two adjacent ones of the non-independent filling grooves 21 have a d4 ≠ d3 therebetween. According to the invention, d3 and d4 meet a certain width requirement, so that the cogging effect is better.

In some embodiments, the filling grooves 2 are distributed on the rotor periphery relative to the slit grooves 3, the non-independent filling grooves 21 are located at two ends of the slit grooves 3, and the filling grooves 2 extend along the d-axis direction; d4 > d 3.

In some embodiments, a plurality of said filling grooves 2 are arranged symmetrically about the d-axis; and/or a plurality of said filling grooves 2 are arranged symmetrically about the q-axis. The filling grooves are symmetrically arranged about a d axis or a q axis; the filler slot is used to assist the motor in achieving self-starting capability.

In some embodiments, the slit grooves 3 include arc segments and/or straight segments, the arc of the arc segments between a plurality of slit grooves 3 becomes gradually larger from the shaft hole 4 side to the rotor outer circle 10 side, and the arc of the outer arc of the slit groove 3 in the same layer is larger than that of the inner arc, and the overall shape of the slit groove 3 is convex outward in a direction away from the rotor center. As shown in fig. 3, the slit groove is formed by combining different line segments; the magnetic resistance in the q-axis direction is increased by the slit groove, and the q-axis inductance is reduced.

In some embodiments, the width of the slit groove 3 gradually increases from the q-axis center to both sides, i.e., d5 < d6, wherein the width of the slit groove 3 is defined as: and the shortest distance from each point on one side of the two sides of the slit groove to the other side, wherein d5 is the width of the slit groove 3 relatively close to the q-axis center, d6 is the width of the slit groove 3 relatively far from the q-axis center, and the ratio of the maximum value to the minimum value of the width of each slit groove in the q-axis direction is less than 1.3. According to the invention, the rotor space can be effectively utilized through the dimensional relationship, and the magnetic resistance in the q-axis direction is further increased.

In some embodiments, a magnetic conduction channel 9 exists between the two slit grooves 3, the width of the magnetic conduction channel 9 gradually increases from the q-axis center to both sides, that is, the width of the magnetic conduction channel 9 gradually increases from the q-axis to both sides of the q-axis, that is, along the extending direction of the d-axis, and the width of the magnetic conduction channel 9 is defined as: the shortest distance from each point on one side of the two sides of the magnetic conduction channel 9 to the other side; and the width of each magnetic conduction channel in the q-axis direction gradually decreases towards the direction far away from the d-axis. The magnetic conduction channel of the invention extends along the d axis, the width is increased, the saturation is avoided, the magnetic resistance is small, the magnetic flux d axis flows smoothly, the d axis inductance is increased, the d and q axis inductance difference is increased, and the magnetic resistance torque is increased.

In some embodiments, the minimum width d7 of the magnetic conduction channel 9 between the slit grooves 3 is less than or equal to the minimum width d8 of the magnetic conduction channel 9 between the filling grooves 2 at two ends of the slit groove 3, i.e. d7 ≦ d 8; more preferably, d8/d7 is greater than 1.15. Through the arrangement of the size, the over-saturation of the rotor can be reduced, and more magnetic flux can enter the stator.

In some embodiments, the non-independent filling groove 21 and the slit groove 3 have a dividing rib 7 therebetween, and the slit groove 3 and the non-independent filling grooves 21 at two ends thereof form a magnetic barrier layer, a distance in the direction of the d axis of a side edge of the dividing rib 7 adjacent to the outer circle of the rotor in two adjacent magnetic barrier layers is W, and a distance in the direction of the q axis of a magnetic conduction channel formed between side edges of the non-independent filling grooves 21 adjacent to the dividing rib 7 in the two adjacent magnetic barrier layers is d9, and satisfies 0 ≦ W < 2 × d 9. According to the invention, through the arrangement of the sizes, on one hand, the difference between the filling grooves is ensured to be small, and the starting is improved; on the one hand, the deformation of the rotor during die casting can be reduced.

In some embodiments, 0 ≦ W < d9 is satisfied. The invention can further improve starting on the one hand by setting the size; on the one hand, the deformation of the rotor during die casting can be further reduced.

In some embodiments, the slit groove 3 and the non-independent filling grooves 21 at both ends thereof are divided by a dividing rib 7, and the width L1 of the dividing rib 7 satisfies: l1 is more than or equal to 0.5 sigma, and sigma is the width of the air gap between the stator and the rotor.

In some embodiments, the minimum distance between the filling slot 2 and the outer circle 10 of the rotor is L2, and satisfies 0 ≦ L2 ≦ 2 σ, σ being the width of the air gap between the stator and the rotor. The invention sets proper rib width, which can reduce magnetic leakage and ensure certain mechanical strength of the rotor.

In some embodiments, the angle α between the two ends of the independent filling slots and the connecting line of the rotor center should satisfy 20 ° α or more and 60 ° or less, and more preferably, α should satisfy 30 ° α or more and 40 ° or less. The independent filling groove is equivalent to a magnetic barrier, and the starting capability can be improved by the independent filling groove with a certain size, and the inductance difference can be increased by d and q axes.

at least part of the filling grooves 2 are filled with conductive and non-conductive materials, and the end rings 8 at the two ends of the rotor realize self-short circuit to form a squirrel cage. As shown in figure 2, the two ends of the rotor core are provided with end rings which can cover the filling grooves to realize short circuit, and when the motor is started, the squirrel cage generates asynchronous torque to start the motor.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A self-starting synchronous reluctance motor rotor is characterized in that:

including rotor punching (1), be provided with a plurality of filling grooves (2), slit groove (3) and shaft hole (4) on rotor punching (1), half under the utmost point, periphery tip (20) relative with rotor excircle (10) on at least one filling groove (2) are buckled with the direction of keeping away from the d axle or the direction towards the d axle, form limit (5) of buckling.

2. The self-starting synchronous reluctance machine rotor of claim 1, wherein:

the outer peripheral end (20) of at least one filling groove (2) opposite to the outer circle (10) of the rotor is provided with a chamfered edge (6), and the included angle between the bent edge (5) or the chamfered edge (6) of the filling groove (2) and the straight edge (23) of the filling groove (2) in the extending direction is theta; theta > 100 DEG is satisfied.

3. The self-starting synchronous reluctance machine rotor of claim 2, wherein:

theta is larger than or equal to 130 degrees and smaller than or equal to 160 degrees.

4. The self-starting synchronous reluctance machine rotor of claim 2, wherein:

the outer peripheral end (20) of the filling groove (2) opposite to the outer circle (10) of the rotor meets 0.4 x d1 and d2 and 0.8 x d1 between the width d2 cut by the chamfered edge (6) and the width d1 of the outer peripheral end (20) before being cut.

5. The self-starting synchronous reluctance machine rotor of claim 1, wherein:

the filling grooves (2) include non-independent filling grooves (21) provided in the same layer as the slit grooves (3), and independent filling grooves (22) provided in a different layer from the slit grooves (3), and the independent filling grooves (22) are located on the outer periphery of the rotor in the q-axis direction and are provided close to the outer periphery of the rotor with respect to the non-independent filling grooves (21).

6. The self-starting synchronous reluctance machine rotor of claim 5, wherein:

a magnetic conduction channel (9) is arranged between two adjacent non-independent filling grooves (21), the width of the magnetic conduction channel (9) between the positions, closest to the outer peripheral end of the rotor, of the two adjacent non-independent filling grooves (21) along the q-axis direction is d4, the width of the magnetic conduction channel (9) between the positions, closest to the slit groove (3), of the two adjacent non-independent filling grooves (21) along the q-axis direction is d3, and d4 ≠ d3 is arranged between at least two adjacent non-independent filling grooves (21).

7. The self-starting synchronous reluctance machine rotor of claim 6, wherein:

the filling grooves (2) are distributed on the periphery of the rotor relative to the slit grooves (3), the non-independent filling grooves (21) are positioned at two ends of the slit grooves (3), and the filling grooves (2) extend along the direction of the d axis; d4 > d 3.

8. The self-starting synchronous reluctance machine rotor of claim 1, wherein:

a plurality of said filling grooves (2) being arranged symmetrically about the d-axis; and/or a plurality of said filling grooves (2) are arranged symmetrically about the q-axis.

9. The self-starting synchronous reluctance machine rotor of claim 1, wherein:

the slot grooves (3) comprise arc sections and/or straight sections, the radian of the arc sections among the slot grooves (3) is gradually increased from the shaft hole (4) side to the rotor excircle (10) side, the radian of the outer arc of the slot groove (3) on the same layer is larger than that of the inner arc, and the overall shape of the slot groove (3) is convex towards the direction far away from the center of the rotor.

10. The self-starting synchronous reluctance machine rotor of claim 1, wherein:

the width of the slit groove (3) is gradually increased from the q-axis center to two sides, namely d5 < d6, wherein the width of the slit groove (3) is defined as: and the shortest distance from each point on one side of the two sides of the slit groove to the other side, wherein d5 is the width of the slit groove (3) relatively close to the q-axis center, d6 is the width of the slit groove (3) relatively far away from the q-axis center, and the ratio of the maximum value to the minimum value of the width of each slit groove in the q-axis direction is less than 1.3.

11. The self-starting synchronous reluctance machine rotor of claim 1, wherein:

a magnetic conduction channel (9) is arranged between the two slit grooves (3), the width of the magnetic conduction channel (9) is gradually increased from the center of the q axis to two sides, namely from the upper part of the q axis to two sides of the q axis, namely the width of the magnetic conduction channel (9) is gradually increased along the extension direction of the d axis, and the width of the magnetic conduction channel (9) is defined as follows: the shortest distance from each point on one side edge of the two side edges of the magnetic conduction channel (9) to the other side edge; and the width of each magnetic conduction channel in the q-axis direction gradually decreases towards the direction far away from the d-axis.

12. The self-starting synchronous reluctance machine rotor of claim 11, wherein:

the minimum width d7 of the magnetic conduction channel (9) between the slit grooves (3) is less than or equal to the minimum width d8 of the magnetic conduction channel (9) between the filling grooves (2) at the two ends of the slit groove (3), namely d7 is less than or equal to d 8.

13. The self-starting synchronous reluctance machine rotor of claim 5, wherein:

the magnetic flux shield rotor is characterized in that a dividing rib (7) is arranged between the non-independent filling groove (21) and the narrow groove (3), the narrow groove (3) and the non-independent filling grooves (21) at two ends of the narrow groove form a magnetic barrier layer, the distance between the side edge of one side, close to the excircle of the rotor, of the dividing rib (7) in two adjacent magnetic barrier layers is W along the direction of the d axis, the distance between the magnetic flux guide channels formed between the side edges, close to the dividing rib (7), of the non-independent filling grooves (21) in the two adjacent magnetic barrier layers is d9 along the direction of the q axis, and W is more than or equal to 0 and less than 2 x d 9.

14. The self-starting synchronous reluctance machine rotor of claim 13, wherein:

w is more than or equal to 0 and less than d 9.

15. The self-starting synchronous reluctance machine rotor of claim 5, wherein:

the slit groove (3) and the non-independent filling grooves (21) at the two ends are divided by a dividing rib (7), and the width L1 of the dividing rib (7) satisfies the following conditions: l1 is more than or equal to 0.5 sigma, and sigma is the width of the air gap between the stator and the rotor.

16. A self-starting synchronous reluctance machine rotor according to any one of claims 1 to 15, wherein:

the minimum distance between the filling groove (2) and the outer circle (10) of the rotor is L2, L2 is more than or equal to 0 and less than or equal to 2 sigma, and sigma is the width of an air gap between the stator and the rotor.

17. The self-starting synchronous reluctance machine rotor of claim 5, wherein:

the included angle alpha between the two ends of the independent filling groove and the connecting line of the center of the rotor is more than or equal to 20 degrees and less than or equal to 60 degrees.

18. A self-starting synchronous reluctance machine rotor according to any one of claims 1 to 17, wherein:

the motor rotor comprises a rotor core and a squirrel cage, wherein the rotor core is formed by axially laminating rotor punching sheets; and/or the presence of a gas in the gas,

at least part of the filling grooves (2) are filled with conductive and non-conductive materials, and the end rings (8) at two ends of the rotor realize self-short circuit to form a squirrel cage.

19. An electrical machine comprising a synchronous reluctance machine rotor structure, characterized in that the synchronous reluctance machine rotor structure is a self-starting synchronous reluctance machine rotor according to any one of claims 1 to 18.