CN209805640U - Self-starting synchronous reluctance motor and compressor with same - Google Patents

Abstract

The utility model provides a self-starting synchronous reluctance motor and have its compressor. The self-starting synchronous reluctance motor comprises a stator core, wherein a plurality of stator teeth are arranged on the inner circumferential surface of the stator core; rotor core, rotor core's q axle department is provided with the magnetic flux barrier, and the magnetic flux barrier extends the setting along rotor core's circumference, and the both ends of magnetic flux barrier are located respectively between the clearance that the tooth boots of two adjacent stator teeth formed, and the magnetic flux barrier covers a N stator tooth along rotor core's radial direction towards the projection line on one side of the stator core, and wherein, N is Z8, and Z is the number of stator tooth, and N is the rounding-off and gets the integer value. The difference between the magnetic fluxes of the d axis and the q axis can be effectively increased, the reluctance torque of the motor with the rotor structure is increased, and the output torque and the efficiency of the motor are improved.

Description

Self-starting synchronous reluctance motor and compressor with same

Technical Field

The utility model relates to a compressor equipment technical field particularly, relates to a self-starting synchronous reluctance motor and have its compressor.

Background

The self-starting and self-starting synchronous reluctance motor combines the structural characteristics of an induction motor and the self-starting synchronous reluctance motor, realizes starting by generating torque through cage induction, realizes constant-speed operation by generating reluctance torque through the difference of d and q inductances of a rotor, and can realize starting operation by directly connecting a power supply. Compared with a self-starting permanent magnet motor, the self-starting synchronous reluctance motor has no rare earth permanent magnet material, has no demagnetization problem, and has low cost and good reliability; compared with an asynchronous motor, the motor has high efficiency and constant rotating speed.

In the prior art, patent publication No. CN 103208894a discloses a rotor structure, in which a cutting groove (groove) is formed on the outer peripheral side of the rotor in the q-axis direction, so as to increase the magnetic resistance in the q-axis direction, reduce the q-axis inductance, increase the difference between the d and q inductances of the motor, and increase the torque of the motor; however, the squirrel cage at the groove is cut off, so that the starting capability of the motor is poor, and the groove design does not consider the law of the action relation with the stator tooth grooves, so that the effect is poor. Patent No. CN 1255925C provides an inexpensive synchronous induction motor that is easy to start, and an apparatus and a method for manufacturing the synchronous induction motor, in which a rotor is provided with at least a pair of slit portions of magnetic pole protrusions having two poles with a d-axis in a direction in which magnetic flux easily flows and a q-axis in a direction in which magnetic flux hardly flows, and a plurality of slit portions arranged on the outer peripheral side of the slit portions, and conductive materials are filled in the slit portions and the slit portions. The slit portions are formed in a linear shape, and the slit portions are radially arranged at equal intervals in the circumferential direction. In this patent, the slots are arranged radially at equal intervals so that the magnetic flux between the slots flows radially in a direction perpendicular to the rotor surface, and the slots block the magnetic flux flowing in the d-axis direction, and particularly, the d-axis magnetic flux blocks the magnetic flux more significantly and the q-axis magnetic flux flows more smoothly as the slots are closer to the q-axis, so that the d-axis magnetic flux and the q-axis magnetic flux do not differ significantly from each other, the salient pole ratio is not large, and the motor output and efficiency are insufficient. In addition, the slit part is made into a linear shape, the center of the rotor is provided with a shaft hole, the internal space of the d-axis rotor is large, and the internal space of the rotor is not well utilized to arrange the slit part to increase the salient pole ratio of the motor.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a self-starting synchronous reluctance motor and a compressor having the same, which solve the problem of low motor efficiency in the prior art.

in order to achieve the above object, according to an aspect of the present invention, there is provided a self-starting synchronous reluctance motor including: the stator core is provided with a plurality of stator teeth on the inner circumferential surface; rotor core, rotor core's q axle department is provided with the magnetic flux barrier, and the magnetic flux barrier extends the setting along rotor core's circumference, and the both ends of magnetic flux barrier are located respectively between the clearance that the tooth boots of two adjacent stator teeth formed, and the magnetic flux barrier covers a N stator tooth along rotor core's radial direction towards the projection line on one side of the stator core, and wherein, N is Z8, and Z is the number of stator tooth, and N is the rounding-off and gets the integer value.

Further, the magnetic flux barrier is a q-axis filling groove formed in the q-axis, and the q-axis filling groove extends along the circumferential direction of the rotor core.

Further, the magnetic flux blocking part includes: the q-axis filling groove is formed in the q-axis position; the first groove is formed in the outer peripheral surface of the rotor core and is arranged adjacent to the first end of the q-axis filling groove; and the second groove is formed in the outer peripheral surface of the rotor core and is arranged adjacent to the second end of the q-axis filling groove.

Further, the first groove, the q-axis filling groove and the second groove are symmetrically arranged about the q-axis, and the cross section of the first groove and the second groove is rectangular oval or circular.

Further, the total width of the first and second grooves in the circumferential direction of the rotor core is smaller than the width of the q-axis filling slot in the circumferential direction of the rotor core.

Furthermore, the depth of the first groove and/or the second groove along the radial direction of the rotor core is H, wherein H is more than or equal to 0.5 delta and less than or equal to 10 delta, and delta is the width of an air gap between the stator core and the rotor core.

Further, the magnetic flux blocking part is a third groove formed in the outer peripheral surface of the rotor core, and the third groove extends along the circumferential direction of the rotor core.

furthermore, the maximum depth of the third groove along the radial direction of the rotor core is H, wherein H is more than or equal to 0.5 delta and less than or equal to 10 delta, and delta is the width of an air gap between the stator core and the rotor core.

Further, the third groove shape is a structure composed of at least one of a straight line segment or an arc line segment.

Furthermore, a plurality of narrow slot grooves are formed in the rotor core, two ends of each narrow slot groove are provided with a filling groove, and the extending direction of each filling groove is parallel to the d-axis of the rotor core or is arranged with an included angle.

Further, the slit groove is composed of a partial arc section and/or a straight line section, the arc section is convexly provided toward one side of the shaft hole away from the rotor core, and/or the width of the slit groove is gradually increased along both sides of the q-axis.

further, the slit groove has an arc-shaped section, and an arc radian of the arc-shaped section of the slit groove is gradually reduced along a radial direction away from the rotor core shaft hole.

Further, the slit groove has straightway and segmental arc, and the straightway of slit groove is located the both ends of segmental arc, and the length of straightway sets up along the radial direction of keeping away from the rotor core shaft hole with reducing gradually.

further, the straight line segment of the slit groove extends in the d-axis direction.

Further, the width of the slit groove is gradually increased along both sides of the q-axis.

Furthermore, reinforcing ribs are arranged between the end parts of the slot grooves and the corresponding filling grooves, the width of each reinforcing rib is L4, wherein L4 is more than or equal to 0.5 delta, and delta is the width of an air gap between the stator core and the rotor core.

Further, a distance L4 is reserved between the filling groove and the outer periphery of the rotor core, wherein L4 is larger than or equal to 0.5 delta.

Furthermore, the slit groove and the filling grooves at two ends of the slit groove are combined into a magnetic barrier layer, and the magnetic barrier layer is at least two layers in the radial direction of the rotor core.

Further, the ratio of the sum of the radial width of all the slit grooves on the Q axis and the radial width of the Q-axis filling grooves on the Q axis to the effective core width of the rotor core is Q1, wherein Q1 is more than or equal to 0.3 and less than or equal to 0.6.

Furthermore, all the filling grooves, the magnetic flux blocking parts and the slit grooves are filled with conductive and non-conductive materials.

Furthermore, the filling grooves and the q-axis filling grooves are filled with conductive and non-conductive materials which are communicated with the conductive end rings at two ends of the rotor core to form a squirrel cage structure, and the conductive end rings are filled with the same materials as the filling grooves and the q-axis filling grooves.

According to another aspect of the present invention, there is provided a compressor, including a self-starting synchronous reluctance motor, which is the above-mentioned self-starting synchronous reluctance motor.

use the technical scheme of the utility model, through the projection line that radial direction along rotor core with the magnetic flux barrier part towards stator core one side covers a N stator tooth, wherein, N is Z8, and Z is the number of stator tooth, and N gets the integer value for rounding off. The difference between the magnetic fluxes of the d axis and the q axis can be effectively increased, the reluctance torque of the motor with the rotor structure is increased, and the output torque and the efficiency of the motor are improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of a first embodiment of a self-starting synchronous reluctance machine according to the present invention;

Fig. 2 shows a schematic structural view of a second embodiment of a self-starting synchronous reluctance machine according to the present invention;

Fig. 3 shows a schematic structural view of a third embodiment of a self-starting synchronous reluctance machine according to the present invention;

fig. 4 shows a schematic structural view of a fourth embodiment of a self-starting synchronous reluctance machine according to the present invention;

figure 5 shows a comparison of self-starting synchronous reluctance machine according to the present invention with the motor output force of the prior art;

Fig. 6 shows a schematic view of an embodiment of a magnetic circuit of a self-starting synchronous reluctance machine according to the present invention;

Fig. 7 shows a schematic view of an embodiment of a magnetic circuit of a prior art electric machine.

Fig. 8 shows a diagram of the relationship between different magnetic barrier ratios and the motor output torque of the motor according to the present invention.

Fig. 9 shows a schematic structural view of a fifth embodiment of a self-starting synchronous reluctance machine according to the present invention;

Fig. 10 shows a schematic structural view of a sixth embodiment of a self-starting synchronous reluctance machine according to the present invention;

Fig. 11 shows a schematic three-dimensional rotor of a fourth embodiment of a self-starting synchronous reluctance machine according to the present invention. Wherein the figures include the following reference numerals:

10. A stator core; 11. stator teeth;

20. A rotor core; 21. q-axis filling grooves; 22. a first groove; 23. a second groove; 24. a third groove;

30. A slit groove;

40. Filling the groove;

50. and (5) reinforcing ribs.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 to 11, according to an embodiment of the present invention, a self-starting synchronous reluctance motor is provided.

specifically, as shown in fig. 1, the motor includes a stator core 10 and a rotor core 20. The inner circumferential surface of the stator core 10 is provided with a plurality of stator teeth 11. The q-axis department of rotor core 20 is provided with the magnetic flux barrier, and the magnetic flux barrier extends along rotor core 20's circumference and sets up, and the both ends of magnetic flux barrier are located respectively between the clearance that the tooth boots of two adjacent stator teeth 11 formed, and the magnetic flux barrier covers N stator teeth 11 towards the projection line of stator core 10 one side along rotor core 20's radial direction, and wherein, N is Z8, and Z is the number of stator teeth 11, and N is the integer value of rounding off.

In the present embodiment, N stator teeth 11 are covered by a projection line of the magnetic flux barrier portion toward the stator core 10 side in the radial direction of the rotor core 20, where N is Z/8, Z is the number of stator teeth 11, and N is a rounded integer value. The difference between the magnetic fluxes of the d axis and the q axis can be effectively increased, the reluctance torque of the motor with the rotor structure is increased, and the output torque and the efficiency of the motor are improved.

The magnetic flux barrier is a q-axis filling groove 21 opened at the q-axis, and the q-axis filling groove 21 extends along the circumferential direction of the rotor core 20. Therefore, the q-axis filling groove 21 can form a magnetic barrier structure, the difference of magnetic fluxes between the q-axis and the d-axis can be improved, and the rotating torque of the motor is further improved.

According to an embodiment of the present application, as shown in fig. 2, the magnetic flux barrier includes a q-axis filling groove 21, a first groove 22, and a second groove 23. The q-axis filling groove 21 opens at the q-axis. First groove 22 is opened on the outer peripheral surface of rotor core 20, and first groove 22 is provided adjacent to the first end of q-axis filling groove 21. A second groove 23 opens on the outer peripheral surface of the rotor core 20, and the second groove 23 is provided adjacent to the second end of the q-axis filling groove 21. The first groove 22, the q-axis filling groove 21, and the second groove 23 are symmetrically arranged about the q-axis. The total width of the first groove 22 and the second groove 23 in the rotor circumferential direction is smaller than the width of the q-axis filling groove 21 in the rotor circumferential direction. The arrangement can also play a role in reducing the torque pulsation of the motor and improving the efficiency of the motor, and simultaneously contributes to improving the starting capability of the motor. The first groove 22 and the second groove 23 may be rectangular, circular, or oval.

In order to be able to further improve the efficiency of the motor, the depth of the first and second grooves 22 and 23 in the radial direction of the rotor core 20 may be set to H, where 0.5 δ ≦ H ≦ 10 δ, where δ is the width of the air gap between the stator core 10 and the rotor core 20.

In the embodiment shown in fig. 3, the magnetic flux barrier is a third groove 24 opened on the outer circumferential surface of the rotor core 20, the third groove 24 extends along the circumferential direction of the rotor core 20, and the shape of the third groove 24 is not limited, and may have various structures including at least one of a straight line segment and an arc line segment, as shown in fig. 9 and 10. The maximum depth of the third groove 24 in the radial direction of the rotor core 20 is H, where H is greater than or equal to 0.5 δ and less than or equal to 10 δ, where δ is the width of the air gap between the stator core 10 and the rotor core 20. The arrangement can also play a role in reducing the torque pulsation of the motor and improving the efficiency of the motor.

further, the rotor core 20 is formed with a plurality of slit grooves 30, and both ends of each slit groove 30 are provided with a filling groove 40 to form a magnetic barrier layer. The extending direction of the filling groove 40 is parallel to the d-axis of the rotor core 20 or is disposed with an angle, wherein the angle is small, so that the extending direction of the filling groove 40 is substantially parallel to the d-axis. The slit groove 30 is formed of a partial arc-shaped segment and/or a straight segment, and the arc-shaped segment is convexly provided toward the side away from the shaft hole of the rotor core 20. The arc of the slit groove 30 gradually decreases in a radial direction away from the shaft hole of the rotor core 20. The straight line segments at both ends of the slit groove 30 extend generally in the d-axis direction. The straight line segments are gradually reduced in length in the radial direction away from the shaft hole of the rotor core 20, even without straight line segments. The slit groove 30 is provided with a width gradually increasing along both sides of the q-axis. A reinforcing rib 50 is arranged between the end of the slot 30 and the corresponding filling slot 40, and the width of the reinforcing rib 50 is L4, wherein L4 is greater than or equal to 0.5 δ, and δ is the width of the air gap between the stator core 10 and the rotor core 20. The rotor space can be effectively utilized by the arrangement, the inductance difference of the motor is increased, the efficiency of the motor is improved, and the practicability of the motor is increased.

Further, the slit groove 30 is combined with the filling grooves 40 at both ends thereof to form a magnetic barrier layer, which is at least two layers in the radial direction of the rotor. The ratio of the sum of the radial width of all the slit grooves 30 on the Q axis and the radial width of the Q axis filling grooves 21 on the Q axis to the effective rotor radial iron core width is Q1, wherein Q1 is more than or equal to 0.3 and less than or equal to 0.6. Preferably, the ratio is 0.38-0.45, and the appropriate magnetic barrier ratio is set in such a way, so that magnetic field saturation is avoided, and the output torque of the motor is effectively improved, as shown in fig. 8, when the magnetic barrier ratio is about 0.42, the output force of the motor is the largest, the magnetic barrier ratio is too large or too small, the output force of the motor is reduced, and the influence of the appropriate magnetic barrier ratio on the output force of the motor is larger. Wherein, the effective iron core width refers to the width from the inner circle of the rotor shaft hole to the outer edge of the rotor iron core.

All the filling grooves 40, the magnetic flux blocking parts and the slit grooves 30, and all the filling grooves 40 and the q-axis filling grooves 21 are filled with conductive and non-conductive materials. Preferably, the electrically conductive and magnetically non-conductive material is aluminum or an aluminum alloy. And the filling grooves 40 and the q-axis filling grooves 21 are filled with conductive and non-conductive materials to be communicated with the conductive end rings 25 at the two ends of the rotor core, so that a squirrel-cage structure is formed. The conductive end ring 25 material is identical to the filling material in the filling grooves 40 and the q-axis filling grooves 21. The magnetic barrier layer is arranged to block q-axis magnetic flux, so that d-axis and q-axis inductance difference of the motor is increased, and motor efficiency is improved. A proper squirrel cage structure is designed to help the motor realize asynchronous starting, and the starting capability of the motor is improved.

The motor mechanism in the above-mentioned embodiment can also be used for compressor equipment technical field, promptly according to the utility model discloses a further aspect provides a compressor. The compressor comprises a self-starting synchronous reluctance motor, wherein the self-starting synchronous reluctance motor is the self-starting synchronous reluctance motor.

Specifically, the self-starting synchronous reluctance motor rotor structure and the motor provided by the application can increase the difference between the magnetic fluxes of the d axis and the q axis, solve the problems of low efficiency and low rotating speed of an asynchronous motor, and improve the output power and efficiency of the motor. The motor is a self-starting synchronous reluctance 2-pole motor, and comprises a stator core formed by laminating stator punching sheets and a rotor core formed by laminating rotor punching sheets with specific structures. The rotor punching sheet is provided with a plurality of groups of narrow slot grooves, filling grooves, q-axis filling grooves and a central shaft hole matched with the rotating shaft. Be provided with the magnetic flux barrier on the rotor punching periphery q axle direction, this magnetic flux barrier circumference total width is L, and L is greater than the outside width of N stator tooth, is less than N +2 and lies in the width in 2 individual stator teeth about N stator tooth promptly, and N is Z8, and Z is the stator tooth number, and N gets the integer value according to rounding off.

Taking a 24-slot stator as an example, when N is equal to Z/8 is equal to 24/8 is equal to 3, the total circumferential width L of the flux barrier is greater than the outer edge width of 3 stator teeth, as shown by L1 in fig. 1, and less than the inner edge width of 5 stator teeth, as shown by L2 in fig. 1, that is, L satisfies L1 < L2. Fig. 6 and 7 show the effect of the flux barrier on the q-axis magnetic field in comparison, when the total circumferential width L of the flux barrier is small, a large amount of magnetic flux enters 3 q-axis stator teeth from both sides of the flux barrier, and as shown in fig. 7, the q-axis magnetic flux is large. When L satisfies L1 < L2, the magnetic flux barrier can shield 3 stator teeth, effectively increases the magnetic resistance in the q-axis direction, greatly reduces the magnetic flux entering the 3 stator teeth of the q-axis, and achieves a good effect of reducing the magnetic flux as shown in FIG. 6.

the magnetic flux barrier may be an elongated q-axis filling slot extending along the d-axis direction, and the width of the q-axis filling slot is the q-axis filling slot width L, as shown in fig. 1, and L1 < L2 is satisfied. The magnetic flux barrier may be an elongated filling slot and two slots, and the width L of the filling slot is the maximum width between the outermost edges of the two slots, as shown in fig. 2, and satisfies L1 < L2. At this time, the q-axis filling groove is positioned between the two grooves, and the two grooves are symmetrically arranged about the q axis. Of course, as shown in fig. 3, the magnetic flux barrier is a large groove, and the width L of the large groove is equal to the width of two sides of the large groove, so that L1 < L2 is satisfied.

According to the different embodiments of the magnetic flux barrier, the width L of the magnetic flux barrier meets the condition that L1 is more than L and less than L2, so that the magnetic resistance in the q-axis direction can be increased, the q-axis magnetic flux can be reduced, the difference between the d-axis magnetic flux and the q-axis magnetic flux can be increased, the reluctance torque of the motor can be increased finally, and the efficiency of the motor can be improved.

if the width of the magnetic flux barrier part is too large, the effect of reducing the q-axis magnetic flux is obvious, but the d-axis stator teeth are less, the stator teeth are saturated, the d-axis magnetic flux is reduced, the d-axis magnetic flux and the q-axis magnetic flux are not increased, and the effect cannot be achieved. Therefore, the circumferential radial depth of the groove and the large groove can be set to be H, the condition that H is more than or equal to 0.5 delta and less than or equal to 10 delta is met, and delta is the width of an air gap between the stator core and the rotor core. Preferably, H is more than or equal to 2 delta and less than or equal to 5 delta, and the arrangement ensures that the magnetic resistance of the magnetic flux barrier is large enough and reduces the magnetic flux of the q axis.

Further, the extending direction of the filling grooves at both ends of the slit groove is substantially parallel to the d-axis, so that the d-axis magnetic flux flows smoothly in the d-axis direction. The filling slots are located at both ends of the slot and are symmetrical about the d-axis or the q-axis. The slot groove is composed of an arc section or a straight section and an arc section, and the arc radian of the slot groove is gradually reduced along the direction far away from the center of the rotating shaft. The extending direction of the straight line segment of the slit groove is approximately parallel to the d axis. The arc of the slit groove projects toward the side away from the center of the rotation shaft, the slit width of the slit groove in the q axis is L3, and the width L3 of the slit groove gradually increases from the q axis to both sides. Therefore, the rotor space is effectively utilized, the magnetic flux saturation is reduced, and the magnetic flux of the d shaft is improved.

The filling groove and the corresponding slit groove are provided with a dividing rib, the width of the dividing rib is L4, and the following requirements are met: l4 is more than or equal to 0.5 delta and less than or equal to delta. Set up suitable muscle of cutting apart and cut apart slit groove and filling groove, guarantee certain width simultaneously, reduce the q axle magnetic leakage when guaranteeing mechanical strength. The filling grooves and the corresponding slit grooves are combined into a magnetic barrier layer, and the magnetic barrier layer is at least arranged more than two layers in the radial direction of the rotor, so that the salient polarity of the motor is increased, the reluctance torque is increased, and the efficiency is improved. And all the filling grooves, the q-axis filling grooves and the slit grooves, and at least all the filling grooves and the q-axis filling grooves are filled with conductive and non-conductive materials. Preferably, the electrically conductive and magnetically non-conductive material is aluminum or an aluminum alloy. Fig. 5 shows that the technical scheme of the present application compares with the torque curve of the prior art, and the average torque of the technical scheme of the present application is improved significantly, and the effect is significant.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (22)

1. A self-starting synchronous reluctance machine comprising:

A stator core (10), wherein the inner circumferential surface of the stator core (10) is provided with a plurality of stator teeth (11);

rotor core (20), rotor core (20) q axle department is provided with the magnetic flux barrier, the magnetic flux barrier is followed rotor core (20) circumference extension sets up, the both ends of magnetic flux barrier are located adjacent two respectively between the clearance that the tooth boots of stator tooth (11) formed, the magnetic flux barrier is followed rotor core (20) radial direction orientation the projection line of stator core (10) one side covers N stator tooth (11), wherein, N is Z/8, Z is the number of stator tooth (11), and N is the rounding-off and gets the integer value.

2. The self-starting synchronous reluctance machine according to claim 1, wherein said flux barrier is a q-axis filling groove (21) opened at said q-axis, said q-axis filling groove (21) being provided extending in a circumferential direction of said rotor core (20).

3. The self-starting synchronous reluctance machine of claim 1, wherein the flux barrier comprises:

a q-axis filling groove (21), wherein the q-axis filling groove (21) is arranged at the q-axis;

A first groove (22), wherein the first groove (22) is opened on the outer peripheral surface of the rotor core (20), and the first groove (22) is arranged adjacent to the first end of the q-axis filling groove (21);

And a second groove (23), wherein the second groove (23) is formed in the outer peripheral surface of the rotor core (20), and the second groove (23) is arranged adjacent to the second end of the q-axis filling groove (21).

4. a self-starting synchronous reluctance machine according to claim 3, wherein said first groove (22), said q-axis filling slot (21) and said second groove (23) are symmetrically arranged with respect to said q-axis, said first groove (22) and second groove (23) having a rectangular oval or circular cross section.

5. A self-starting synchronous reluctance machine according to claim 3, wherein the total width of said first groove (22) and said second groove (23) in the circumferential direction of said rotor core (20) is smaller than the width of said q-axis filling slot (21) in the circumferential direction of said rotor core (20).

6. Self-starting synchronous reluctance machine according to claim 3 or 4, wherein the depth of said first groove (22) and/or said second groove (23) in the radial direction of the rotor core (20) is H, wherein 0.5 δ ≦ H ≦ 10 δ, wherein δ is the width of the air gap between the stator core (10) and the rotor core (20).

7. the self-starting synchronous reluctance machine according to claim 1, wherein said flux barrier is a third groove (24) opened to an outer circumferential surface of said rotor core (20), said third groove (24) being provided to extend circumferentially along said rotor core (20).

8. Self-starting synchronous reluctance machine according to claim 7, wherein the maximum depth of said third groove (24) in the radial direction of the rotor core (20) is H, wherein 0.5 δ ≦ H ≦ 10 δ, wherein δ is the width of the air gap between the stator core (10) and the rotor core (20).

9. Self-starting synchronous reluctance machine according to claim 7, wherein said third groove (24) is shaped as a structure consisting of at least one of a straight or arc segment.

10. the self-starting synchronous reluctance motor according to claim 1, wherein a plurality of slit grooves (30) are formed in the rotor core (20), a filling groove (40) is formed at each of two ends of each slit groove (30), and the extending direction of the filling groove (40) is parallel to or has an included angle with the d-axis of the rotor core (20).

11. Self-starting synchronous reluctance machine according to claim 10, wherein said slot (30) is composed of a partially arc-shaped segment and/or a straight segment, said arc-shaped segment being convexly provided towards the side of the shaft hole away from said rotor core (20), and/or wherein the width of said slot (30) is gradually increased along both sides of said q-axis.

12. The self-starting synchronous reluctance machine according to claim 10, wherein the slot groove (30) has an arc-shaped section, and an arc-shaped radian of the arc-shaped section of the slot groove (30) is gradually decreased in a radial direction away from the shaft hole of the rotor core (20).

13. The self-starting synchronous reluctance machine according to claim 10, wherein said slot (30) has a straight line segment and an arc segment, the straight line segment of said slot (30) is located at both ends of the arc segment, and the length of the straight line segment is gradually decreased in a radial direction away from the shaft hole of said rotor core (20).

14. Self-starting synchronous reluctance machine according to claim 13, wherein the straight section of said slot (30) extends in the direction of the d-axis.

15. Self-starting synchronous reluctance machine according to claim 10, wherein the width of said slot slots (30) is gradually increasing along both sides of the q-axis.

16. Self-starting synchronous reluctance machine according to claim 10, wherein a rib (50) is provided between the end of said slot (30) and its corresponding filling slot (40), said rib (50) having a width L4, wherein 0.5 δ ≦ L4 ≦ δ, δ being the air gap width between said stator core (10) and said rotor core (20).

17. Self-starting synchronous reluctance machine according to claim 10, wherein said filling slots (40) have a spacing L4 with 0.5 δ L4 δ, from the outer periphery of said rotor core (20).

18. Self-starting synchronous reluctance machine according to claim 10, wherein said slit grooves (30) are combined with said filling grooves (40) at both ends thereof into a magnetic barrier layer, said magnetic barrier layer being at least two layers in a radial direction of said rotor core (20).

19. Self-starting synchronous reluctance machine according to claim 10, wherein the ratio of the sum of the radial width of all slot slots (30) on the Q-axis and the radial width of the Q-axis filling slots (21) on the Q-axis to the effective core width of the rotor core (20) is Q1, wherein Q1 is 0.3 ≦ Q1 ≦ 0.6.

20. Self-starting synchronous reluctance machine according to claim 10, wherein all the filling slots (40) and said flux barriers and slot slots (30), all the filling slots (40) and q-axis filling slots (21) are filled with an electrically and magnetically conductive material.

21. The self-starting synchronous reluctance machine according to claim 1 or 8, wherein the filling slots (40) and the q-axis filling slots (21) are filled with conductive and non-conductive materials to communicate with the conductive end rings (25) at both ends of the rotor core (10) to form a squirrel cage structure, and the conductive end rings (25) are filled with the same materials as the filling slots (40) and the q-axis filling slots (21).

22. A compressor comprising a self-starting synchronous reluctance motor, characterized in that it is a self-starting synchronous reluctance motor according to any one of claims 1 to 21.