CN210839097U - Motor rotor punching sheet and synchronous reluctance motor - Google Patents
Motor rotor punching sheet and synchronous reluctance motor Download PDFInfo
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- CN210839097U CN210839097U CN201921627564.2U CN201921627564U CN210839097U CN 210839097 U CN210839097 U CN 210839097U CN 201921627564 U CN201921627564 U CN 201921627564U CN 210839097 U CN210839097 U CN 210839097U
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Abstract
The application provides a motor rotor punching sheet and a synchronous reluctance motor. This electric motor rotor is towards piece including towards piece body (1), towards piece body (1) including a plurality of magnetic barrier group of arranging along circumference, every magnetic barrier group is including magnetic flux barrier (2) along radial interval arrangement, form magnetic conduction passageway (3) between adjacent magnetic flux barrier (2) under the same utmost point, in the plane of the central axis of perpendicular to towards piece body (1), magnetic flux barrier (2) include first portion (4) and second part (5), first portion (4) perpendicular to Q axle, second part (5) are for first portion (4) along radially outwards lateral buckling. According to the motor rotor punching sheet, the rotor reluctance torque can be effectively increased, and the motor operation efficiency is improved.
Description
Technical Field
The application relates to the technical field of motors, in particular to a motor rotor punching sheet and a synchronous reluctance motor.
Background
With the rapid development of modern society, how to save energy and resources becomes an important consideration in the future development direction of various industries. The motor is an important component of modern society, the power consumption of the motor accounts for more than 30% of the power consumption of human society every year, the permanent magnet synchronous motor with high efficiency needs rare-earth metal resources, and the energy efficiency of the asynchronous motor mainly made of conventional materials is difficult to break through greatly.
The synchronous reluctance motor is a feasible solution because the rotor is manufactured only by processing various groove shapes with the silicon steel sheet without adding any filling. Synchronous reluctance motor efficiency is higher than asynchronous machine, is less than permanent magnet synchronous machine, still needs to further improve efficiency through the design.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem that this application will be solved lies in providing a motor rotor punching and synchronous reluctance motor, can effectively increase rotor reluctance torque, improves motor operating efficiency.
In order to solve the problem, the application provides a motor rotor punching sheet, which comprises a punching sheet body, wherein the punching sheet body comprises a plurality of magnetic barrier groups distributed along the circumferential direction, each magnetic barrier group comprises magnetic flux barriers distributed along the radial direction at intervals, a magnetic conduction channel is formed between the magnetic flux barriers adjacent to the same pole, and in a plane perpendicular to the central axis of the punching sheet body, each magnetic flux barrier comprises a first part and a second part, the first part is perpendicular to a Q axis, and the second part is bent outwards along the radial direction relative to the first part.
Preferably, in a plane perpendicular to the central axis of the punching sheet body, the magnetic conduction channel comprises a third part and a fourth part, the third part is perpendicular to the axis Q, and the fourth part is bent outwards along the radial direction relative to the third part; along the radial direction from inside to outside, the width of the first part is aq1, aq2 … … aqn in proper order, the width of the third part is fq1, fq2 … … fqn in proper order, the distance between the intersection point of the Q axis and the outer circumference of the punching sheet body and the D axis is Wd, and the radial thickness of the punching sheet body on the Q axis is Wq.
Preferably, the width of the first portion satisfies:
0.35<ηq<0.5；
ηq＝(aq1+aq2+aq3+……aqn)/Wq；
the width of the third portion satisfies:
0.35<ξq<0.5；
ξq＝(fq1+fq2+fq3+……fqn)/Wq。
preferably, in a plane perpendicular to the central axis of the punching sheet body, the magnetic conduction channel comprises a third part and a fourth part, the third part is perpendicular to the Q axis, the fourth part is bent outwards along the radial direction relative to the third part, the widths of the second part are ad1 and ad2 … … adn in sequence along the radial direction from inside to outside, the widths of the fourth part are fd1 and fd2 … … fdn in sequence, the distance between the intersection point of the Q axis and the outer circumference of the punching sheet body and the D axis is Wd, and the radial thickness of the punching sheet body on the Q axis is Wq.
Preferably, the width of the second portion is such that:
0.3<ηd<0.45；
ηd＝(ad1+ad2+ad3+……adn)/Wd；
the width of the fourth part satisfies:
0.3<ξd<0.45；
ξd＝(fd1+fd2+fd3+……fdn)/Wd。
preferably, in a plane perpendicular to the central axis of the punching sheet body, the magnetic conduction channel comprises a third part and a fourth part, the third part is perpendicular to the axis Q, the fourth part is bent outwards along the radial direction relative to the third part, the widths of the first part are aq1 and aq2 … … aqn in sequence, the widths of the second part are ad1 and ad2 … … adn in sequence, the widths of the third part are fq1 and fq2 … … fqn in sequence, and the widths of the fourth part are fd1 and fd2 … … fdn in sequence.
Preferably, the width of the first portion (4) and the width of the third portion (6) satisfy between:
0.85<εq<1.15；
0.75<(aq1/fq1,aq2/fq2,aq3/fq3……aqn/fqn)<1.1；
εq＝Sum(aq)/Sum(fq)；
Sum(aq)＝aq1+aq2+aq3+……aqn；
Sum(fq)＝fq1+fq2+fq3+……fqn。
preferably, the width of the second portion (5) and the width of the fourth portion (7) satisfy between:
0.85<εd<1.15；
0.7<(ad1/fd1,ad2/fd2,ad3/fd3……adn/fdn)<1.2；
εd＝Sum(ad)/Sum(fd)；
Sum(ad)＝ad1+ad2+ad3+……adn；
Sum(fd)＝fd1+fd2+fd3+……fdn。
according to another aspect of the application, a synchronous reluctance motor is provided, which comprises a motor rotor punching sheet, wherein the motor rotor punching sheet is the motor rotor punching sheet.
The application provides a motor rotor punching sheet, including the punching sheet body, the punching sheet body includes a plurality of magnetic barrier groups of arranging along the axial, and every magnetic barrier group is including the magnetic flux barrier along radial interval arrangement, forms the magnetic conduction passageway between the magnetic flux barrier adjacent under the same utmost point, and in the plane of the central axis of perpendicular to punching sheet body, the magnetic flux barrier includes first portion and second part, and first portion perpendicular to Q axle, second part are for first portion along radial outside bending. Through setting up the second part for first part radially outside bending, can utilize the bending of second part to increase the salient pole ratio of motor rotor punching, and then increase reluctance torque, realize synchronous reluctance motor's high torque output, improve motor operating efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a motor rotor punching sheet according to an embodiment of the present application;
fig. 2 is a first dimensional structure diagram of a motor rotor punching sheet according to an embodiment of the present application;
fig. 3 is a second dimensional structure diagram of a motor rotor punching sheet according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a third dimension of a motor rotor punching sheet according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a motor rotor punching sheet according to another embodiment of the present application;
FIG. 6 is a graph illustrating an influence of a second portion width of a rotor sheet of a motor on a saliency ratio according to an embodiment of the present disclosure;
FIG. 7 is a graph illustrating an effect of a first portion width of a rotor sheet of a motor on a salient pole ratio according to an embodiment of the present disclosure;
FIG. 8 is a graph illustrating an influence of a salient pole ratio of a motor rotor sheet on a motor torque according to an embodiment of the present disclosure;
fig. 9 is a schematic diagram illustrating an influence of a width ratio of a magnetic flux barrier to a width of a magnetic conduction channel on an iron loss of a motor rotor sheet according to an embodiment of the present application.
The reference numerals are represented as:
1. punching a sheet body; 2. a magnetic flux barrier; 3. a magnetic conduction channel; 4. a first portion; 5. a second portion; 6. A third portion; 7. and a fourth section.
Detailed Description
With reference to fig. 1 to 9, according to an embodiment of the present application, the motor rotor punching sheet includes a punching sheet body 1, the punching sheet body 1 includes a plurality of magnetic barrier groups arranged along a circumferential direction, each magnetic barrier group includes magnetic flux barriers 2 arranged at intervals along a radial direction, a magnetic conduction channel 3 is formed between adjacent magnetic flux barriers 2 under the same pole, in a plane perpendicular to a central axis of the punching sheet body 1, the magnetic flux barriers 2 include a first portion 4 and a second portion 5, the first portion 4 is perpendicular to a Q axis, and the second portion 5 is bent outward along the radial direction relative to the first portion 4.
In a plane perpendicular to the central axis of the punching sheet body 1, the magnetic conduction channel 3 comprises a third part 6 and a fourth part 7, the third part 6 is perpendicular to the axis Q, and the fourth part 7 is bent outwards along the radial direction relative to the third part 6.
The torque of the synchronous reluctance motor is reluctance torque generated by depending on different D/Q shaft reluctance, and is different from asynchronous torque generated by depending on the difference of the rotating speed of a stator and a rotor of an induction motor, and permanent magnet torque generated by depending on a permanent magnet of a permanent magnet motor. The difference of the D/Q shaft magnetic resistance of the synchronous reluctance motor can be completely generated by depending on the rotor structure without adding any other materials, so the synchronous reluctance motor has incomparable advantages in terms of cost and environmental protection.
The utility model provides a synchronous reluctance motor rotor is towards piece structure, it has a plurality of magnetic poles towards piece body 1, towards piece body 1 and can divide into D axle and Q axle according to the magnetic resistance size. Each magnetic pole is provided with a plurality of layers of magnetic flux barriers 2, the magnetic flux barriers 2 are made of air, a magnetic conduction channel 3 is arranged between the magnetic barriers, and the magnetic conduction channel 3 is made of silicon steel sheets.
Through the second part 5 which is bent towards the outer side along the radial direction relative to the first part 4, the salient pole ratio of the motor rotor punching sheet can be increased by utilizing the bending of the magnetic flux barrier of the second part 5, so that the reluctance torque is increased, the high torque output of the synchronous reluctance motor is realized, and the motor operation efficiency is improved.
Along the radial direction from inside to outside, the widths of the second part 5 are ad1 and ad2 … … adn in sequence, the widths of the first part 4 are aq1 and aq2 … … aqn in sequence, the distance between the intersection point of the Q axis and the outer circumference of the punching sheet body 1 and the D axis is Wd, the radial thickness of the punching sheet body 1 on the Q axis is Wq, the width of the fourth part 7 is fd1 and fd2 … … fdn in sequence, the width of the third part 6 is fq1 and fq2 … … fqn in sequence, the distance between the intersection point of the Q axis and the outer circumference of the punching sheet body 1 and the D axis is Wd, and the radial thickness of the punching sheet body 1 on the Q axis is Wq.
The reluctance torque output formula is as follows, where Ld/Lq is the d/q axis inductance, and reluctance is inversely proportional to inductance.
Tem＝p*1/2*(Ld-Lq)is2*sin2β；
Preferably, the width of the first portion 4 satisfies:
0.35<ηq<0.5；
ηq＝(aq1+aq2+aq3+……aqn)/Wq。
preferably, the width of the third portion 6 satisfies:
0.35<ξq<0.5；
ξq＝(fq1+fq2+fq3+……fqn)/Wq。
preferably, the width of the second portion 5 is such as to satisfy:
0.3<ηd<0.45；
ηd＝(ad1+ad2+ad3+……adn)/Wd。
preferably, the width of the fourth portion 7 is such that:
0.3<ξd<0.45；
ξd＝(fd1+fd2+fd3+……fdn)/Wd。
the ratio of the width of the first part 4 to the radial thickness of the punching sheet body 1 on the Q axis meets the relation, and/or the ratio of the width of the second part 5 to the distance between the intersection point of the Q axis and the outer circumference of the punching sheet body 1 and the D axis meets the relation, so that the D/Q axis reluctance ratio is large, and the motor torque output is large.
Preferably, in a plane perpendicular to the central axis of the punching sheet body 1, the magnetic conduction channel 3 includes a third portion 6 and a fourth portion 7, the third portion 6 is perpendicular to the axis Q, the fourth portion 7 is bent outward in the radial direction relative to the third portion 6, the widths of the first portion 4 are aq1 and aq2 … … aqn in sequence, the widths of the second portion 5 are ad1 and ad2 … … adn in sequence, the widths of the third portion 6 are fq1 and fq2 … … fqn in sequence, and the widths of the fourth portion 7 are fd1 and fd2 … … fdn in sequence.
Preferably, the width of the first portion 4 and the width of the third portion 6 satisfy:
0.85<εq<1.15；
0.75<(aq1/fq1,aq2/fq2,aq3/fq3……aqn/fqn)<1.1；
εq＝Sum(aq)/Sum(fq)；
Sum(aq)＝aq1+aq2+aq3+……aqn；
Sum(fq)＝fq1+fq2+fq3+……fqn。
preferably, the width of the second portion 5 and the width of the fourth portion 7 satisfy:
0.85<εd<1.15；
0.7<(ad1/fd1,ad2/fd2,ad3/fd3……adn/fdn)<1.2；
εd＝Sum(ad)/Sum(fd)；
Sum(ad)＝ad1+ad2+ad3+……adn；
Sum(fd)＝fd1+fd2+fd3+……fdn。
because the magnetic field only passes through along magnetic conduction passageway 3, every layer of magnetic flux barrier 2 of the punching sheet body 1 of this application is reasonable with the width ratio of the magnetic conduction passageway 3 that corresponds, and every layer of magnetic conduction passageway magnetic field saturation is equivalent, avoids the iron loss increase that local supersaturation phenomenon caused for the motor has higher efficiency.
When the rotor punching sheet of the synchronous reluctance motor meets the constraint, the local saturation of a rotor magnetic circuit can be avoided, and the iron loss is effectively reduced, so that the synchronous reluctance motor adopting the rotor punching sheet has the characteristics of high torque output, low iron loss and high efficiency.
The motor rotor punching sheet provided by the application is provided with a plurality of magnetic flux barriers 2 and magnetic conduction channels 3, wherein the magnetic flux barriers 2 and the magnetic conduction channels 3 exist in pairs and can be multi-layer, such as 3 layers, 4 layers, 5 layers and the like.
The motor rotor punching sheet is provided with a plurality of magnetic poles which can be 2 poles, 4 poles, 6 poles and the like.
According to the embodiment of the application, the synchronous reluctance motor comprises a motor rotor punching sheet, and the motor rotor punching sheet is the motor rotor punching sheet.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, 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 application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (9)
1. The utility model provides a motor rotor punching, its characterized in that, includes towards piece body (1), towards piece body (1) including a plurality of magnetic barrier group of arranging along circumference, every magnetic barrier group is including magnetic flux barrier (2) along radial interval arrangement, and the same extremely adjacent form magnetic conduction passageway (3) between magnetic flux barrier (2), in the perpendicular to towards the plane of the central axis of piece body (1), magnetic flux barrier (2) include first part (4) and second part (5), first part (4) perpendicular to Q axle, second part (5) for first part (4) are along radially outwards buckling.
2. The electric machine rotor punching sheet according to claim 1, wherein the magnetic conduction channel (3) comprises a third part (6) and a fourth part (7) in a plane perpendicular to the central axis of the punching sheet body (1), the third part (6) is perpendicular to the Q axis, and the fourth part (7) is bent outwards in the radial direction relative to the third part (6); along the radial direction from inside to outside, the width of the first part (4) is aq1 and aq2 … … aqn in sequence, the width of the third part (6) is fq1 and fq2 … … fqn in sequence, the distance between the intersection point of the Q axis and the outer circumference of the punching sheet body (1) and the D axis is Wd, and the radial thickness of the punching sheet body (1) on the Q axis is Wq.
3. The electric machine rotor sheet as recited in claim 2, wherein the width of the first portion (4) satisfies:
0.35<ηq<0.5；
ηq＝(aq1+aq2+aq3+……aqn)/Wq；
the width of the third portion (6) satisfies:
0.35<ξq<0.5；
ξq＝(fq1+fq2+fq3+……fqn)/Wq。
4. the motor rotor punching sheet according to claim 1, wherein the magnetic conduction channel (3) comprises a third part (6) and a fourth part (7) in a plane perpendicular to the central axis of the punching sheet body (1), the third part (6) is perpendicular to a Q axis, the fourth part (7) is bent towards the outer side along the radial direction relative to the third part (6), the width of the second part (5) is ad1 and ad2 … … adn in sequence along the radial direction from the inner side to the outer side, the width of the fourth part (7) is fd1 and fd2 … … fdn in sequence, the distance between the intersection point of the Q axis and the outer circumference of the punching sheet body (1) and the D axis is Wd, and the radial thickness of the punching sheet body (1) on the Q axis is Wq.
5. The electric machine rotor sheet as recited in claim 4, wherein the width of the second portion (5) satisfies:
0.3<ηd<0.45；
ηd＝(ad1+ad2+ad3+……adn)/Wd；
the width of the fourth part (7) satisfies:
0.3<ξd<0.45；
ξd＝(fd1+fd2+fd3+……fdn)/Wd。
6. the motor rotor punching sheet according to claim 1, wherein the magnetic conduction channel (3) comprises a third portion (6) and a fourth portion (7) in a plane perpendicular to the central axis of the punching sheet body (1), the third portion (6) is perpendicular to the axis Q, the fourth portion (7) is bent towards the outer side in the radial direction relative to the third portion (6), the first portion (4) has widths aq1 and aq2 … … aqn in the radial direction from the inner side to the outer side, the second portion (5) has widths ad1 and ad2 … … adn in the radial direction, the third portion (6) has widths fq1 and fq2 … … fqn in the radial direction, and the fourth portion (7) has widths fd1 and fd2 … … fdn in the radial direction.
7. The electric machine rotor sheet as recited in claim 6, characterized in that the width of the first portion (4) and the width of the third portion (6) are such that:
0.85<εq<1.15；
0.75<(aq1/fq1,aq2/fq2,aq3/fq3……aqn/fqn)<1.1；
εq＝Sum(aq)/Sum(fq)；
Sum(aq)＝aq1+aq2+aq3+……aqn；
Sum(fq)＝fq1+fq2+fq3+……fqn。
8. the electric machine rotor sheet as recited in claim 6, wherein the width of the second portion (5) and the width of the fourth portion (7) are such that:
0.85<εd<1.15；
0.7<(ad1/fd1,ad2/fd2,ad3/fd3……adn/fdn)<1.2；
εd＝Sum(ad)/Sum(fd)；
Sum(ad)＝ad1+ad2+ad3+……adn；
Sum(fd)＝fd1+fd2+fd3+……fdn。
9. a synchronous reluctance motor comprises a motor rotor punching sheet, and is characterized in that the motor rotor punching sheet is the motor rotor punching sheet in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921627564.2U CN210839097U (en) | 2019-09-27 | 2019-09-27 | Motor rotor punching sheet and synchronous reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921627564.2U CN210839097U (en) | 2019-09-27 | 2019-09-27 | Motor rotor punching sheet and synchronous reluctance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210839097U true CN210839097U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921627564.2U Active CN210839097U (en) | 2019-09-27 | 2019-09-27 | Motor rotor punching sheet and synchronous reluctance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210839097U (en) |
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2019
- 2019-09-27 CN CN201921627564.2U patent/CN210839097U/en active Active
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