CN109802504B - Permanent magnet magnetic-gathering type synchronous reluctance motor and asymmetric rotor thereof - Google Patents
Permanent magnet magnetic-gathering type synchronous reluctance motor and asymmetric rotor thereof Download PDFInfo
- Publication number
- CN109802504B CN109802504B CN201910271920.XA CN201910271920A CN109802504B CN 109802504 B CN109802504 B CN 109802504B CN 201910271920 A CN201910271920 A CN 201910271920A CN 109802504 B CN109802504 B CN 109802504B
- Authority
- CN
- China
- Prior art keywords
- rotor
- layer
- magnetic isolation
- permanent magnet
- isolation bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001360 synchronised effect Effects 0.000 title claims description 37
- 230000005389 magnetism Effects 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000002955 isolation Methods 0.000 claims description 78
- 238000004804 winding Methods 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 229910000859 α-Fe Inorganic materials 0.000 claims description 4
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 108700041286 delta Proteins 0.000 claims 2
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 230000004907 flux Effects 0.000 abstract description 4
- 230000010349 pulsation Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Abstract
The rotor is designed into an asymmetric structure, the asymmetric structure comprises a structure asymmetric arrangement of a magnetism isolating bridge and a structure asymmetric arrangement of permanent magnets, the motor can generate higher air gap flux density by using fewer permanent magnets, torque pulsation is reduced, stable and efficient operation of the motor is ensured, meanwhile, the coupling and superposition relation of permanent magnet torque and reluctance torque is changed through the rotor asymmetric structure, and the maximum value of the permanent magnet torque and the reluctance torque can be superposed at the same current phase angle, so that two torque components of the motor are fully utilized, and the electromagnetic torque of the motor is obviously improved on the premise of not changing the size, materials and input conditions of the motor, thereby further improving the overall performances of the motor, such as torque density, efficiency, power factor and the like.
Description
Technical Field
The disclosure relates to the technical field of motors, in particular to a high-performance permanent magnet magnetic focusing type synchronous reluctance motor and an asymmetric rotor thereof.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Modern machinery manufacturing, transportation, aerospace, agricultural production, household appliances and other fields have urgent demands for high-performance and high-quality motors. In recent years, with the development of permanent magnet materials and control technologies, permanent magnet synchronous motors are greatly favored in the field of motor application due to the advantages of high torque density, high efficiency, good steady state performance, high operation reliability and the like. However, due to the limitations of the characteristics of the permanent magnet synchronous motor, such as low flux weakening speed regulation performance, high manufacturing cost and the like, the large-scale application and popularization of the permanent magnet synchronous motor still have a large problem. Based on this, a learner proposes a permanent magnet auxiliary type synchronous reluctance motor, which organically combines the advantages of the permanent magnet synchronous motor and the synchronous reluctance motor.
The permanent magnet auxiliary synchronous reluctance motor is mainly characterized in that:
(1) The inductance of the alternating-direct axis is very different, and the alternating-direct axis has a relatively large salient pole ratio which is generally more than 3, so that the reluctance torque can be fully utilized to generate high torque density; (2) Compared with a permanent magnet synchronous motor with the same torque capacity, the permanent magnet synchronous motor has the advantages that the required permanent magnet consumption is small, ferrite permanent magnet materials with low cost can be adopted, and the manufacturing cost of the motor is reduced; (3) Compared with an asynchronous motor, a switch reluctance motor and a synchronous reluctance motor, the motor has higher torque density, efficiency and power factor, and is beneficial to reducing the capacity of an inverter; (4) The motor has weaker permanent magnetic field, stronger weak magnetic energy of armature magnetic field and excellent speed regulation performance.
The permanent magnet auxiliary synchronous reluctance motor has not been popularized on a large scale, and the main problems and difficulties are as follows:
(1) The reduction of the permanent magnet consumption of the permanent magnet auxiliary synchronous reluctance motor is beneficial to reducing the motor cost and expanding the speed regulation range, but the torque density, the efficiency and the power factor are inferior to those of the traditional permanent magnet synchronous motor.
(2) The high torque density of the permanent magnet auxiliary synchronous reluctance motor mainly comes from higher reluctance torque of the permanent magnet auxiliary synchronous reluctance motor, but the overlarge reluctance torque can generate higher torque pulsation, which is not beneficial to the efficient and stable operation of the motor. In addition, although the permanent magnet auxiliary synchronous reluctance motor can generate very high reluctance torque and considerable permanent magnet torque, in the current research design, because the reluctance torque and the permanent magnet torque are in a maximum value, the phase angle beta of current required by the reluctance torque and the permanent magnet torque is different by 45 degrees (electrical angle), and the electromagnetic torque is the vector superposition of the permanent magnet torque and the reluctance torque. In order to quantitatively represent the vector superposition relationship, assuming that the maximum values of the permanent magnet torque and the reluctance torque of the motor are each 1 per unit value, the electromagnetic torque is MAX (cos β+sin2β) =1.76, so that it is seen that the two torque components of the permanent magnet auxiliary synchronous reluctance motor cannot be fully utilized to generate the electromagnetic torque, and the torque density of the motor is relatively low.
Disclosure of Invention
In order to solve the problems, the present disclosure provides a high-performance permanent magnet magnetic focusing synchronous reluctance motor and an asymmetric rotor thereof, wherein the rotor is designed into an asymmetric structure, and the asymmetric structure comprises a structural asymmetric arrangement of a magnetism isolating bridge and an asymmetric arrangement of a permanent magnet structure, so that the motor can generate higher air gap flux density by using fewer permanent magnets, reduce torque pulsation, ensure stable and efficient operation of the motor, and simultaneously change the coupling and superposition relation of permanent magnet torque and reluctance torque through the rotor asymmetric structure, so that the maximum value of the permanent magnet torque and the reluctance torque can be superposed at the same current phase angle, thereby fully utilizing two torque components of the motor, and obviously improving the electromagnetic torque of the motor on the premise of not changing the size, the material and the input condition of the motor, and further improving the overall performances of the motor, such as torque density, efficiency, power factor and the like.
In order to achieve the above purpose, the present disclosure adopts the following technical scheme:
one or more embodiments provide an asymmetric rotor, is applied to permanent magnetism and gathers magnetism synchronous reluctance motor, including the pivot, be fixed in epaxial rotor core of pivot, set up a plurality of magnetic pole on the rotor core, the geometric center line of every magnetic pole is the magnetic pole axis, every magnetic pole includes magnetism isolating bridge and sets up the permanent magnet in magnetism isolating bridge, magnetism isolating bridge and permanent magnet extend along the pivot direction and set up, magnetism isolating bridge includes U type magnetism isolating bridge and bar magnetism isolating bridge, magnetism isolating bridge sets up layer by layer from pivot axle center to rotor edge, bar magnetism isolating bridge sets up at the rotor edge, every layer of U type magnetism isolating bridge that class U type magnetism isolating bridge is located one side of the magnetic pole axis is through magnetism isolating material intercommunication, is located between every layer of U type magnetism isolating bridge of magnetic pole axis opposite side and has asymmetric opening angle.
Further, permanent magnets are arranged at the axial line of the magnetic pole on at least one layer of U-shaped magnetic isolation bridge close to the rotating shaft, and permanent magnets are respectively arranged on the side walls of the non-communicated sides of the U-shaped magnetic isolation bridge of the innermost layer and the outermost layer.
Further, the permanent magnets on each layer of U-shaped magnetism isolating bridge arranged at the axis of the magnetic pole are identical in shape and size.
Further, the permanent magnets arranged on the side walls of the non-communicated sides of the U-shaped magnetism isolating bridge of the innermost layer and the outermost layer are different in size.
Further, the side wall of the side which is not communicated with the U-shaped magnetic isolation bridge is connected to the edge of the rotor, and the side wall of the side which is communicated with the U-shaped magnetic isolation bridge is isolated from the edge of the rotor.
Further, the permanent magnet is a ferrite or neodymium iron boron permanent magnet and is in a magnetism-gathering configuration structure.
Further, the magnetic bridge filling material is resin or plastic to strengthen the strength of the rotor mechanism.
The utility model provides a high performance permanent magnetism gathers synchronous reluctance motor, includes motor housing, sets up stator and the rotor in motor housing, rotor and the coaxial setting of stator, the rotor passes through the pivot setting inside the stator, the rotor adopts foretell an asymmetric rotor.
Further, the stator comprises a stator core and stator slots, stator windings are arranged in the stator slots, and radial gaps are formed between the stator windings and the periphery of the rotor.
Further, the stator slots are arranged at equal intervals along the circumferential direction on the inner periphery of the stator, and extend in a convex shape from the stator core side toward the rotation axis direction.
Compared with the prior art, the beneficial effects of the present disclosure are:
the method and the device can enable the maximum values of the permanent magnet torque and the reluctance torque to be overlapped at the same current phase angle, so that two torque components of the motor are fully utilized, the electromagnetic torque of the motor is obviously improved, under the condition that the maximum values of the permanent magnet torque and the reluctance torque of the motor are 1 per unit value, the two torque components are fully utilized, and the electromagnetic torque can reach 2, therefore, compared with the electromagnetic torque of the existing permanent magnet auxiliary synchronous reluctance motor with the same specification, the permanent magnet magnetic focusing type synchronous reluctance motor adopting the asymmetric rotor can be improved by 13.6%, and further the efficiency and other integral performances of the motor are greatly improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
Fig. 1 is a sectional view of a permanent magnet concentrated synchronous reluctance motor of embodiment 2 of the present disclosure in a direction perpendicular to a rotating shaft;
FIG. 2 is a cross-sectional view of one of the poles of FIG. 1;
fig. 3 is an armature winding wiring diagram of a permanent magnet concentrated synchronous reluctance motor of embodiment 2 of the present disclosure;
fig. 4 is a torque characteristic result diagram of a permanent magnet flux concentrating type synchronous reluctance motor of embodiment 2 of the present disclosure;
wherein: 1. the magnetic pole comprises a stator, 2, a stator core, 3, stator windings, 4, a radial gap, 5, a rotor, 6, a rotor core, 7, a first layer U-shaped magnetic isolation bridge, 7-1, a first layer magnetic isolation bridge A,7-2, a first layer magnetic isolation bridge B,7-3, a first layer magnetic isolation bridge C,8, a second layer U-shaped magnetic isolation bridge, 8-1, a second layer magnetic isolation bridge A,8-2, a second layer magnetic isolation bridge B,9, a third layer U-shaped magnetic isolation bridge, 9-1, a third layer magnetic isolation bridge A,9-2, a third layer magnetic isolation bridge B,10, a strip-shaped magnetic isolation bridge, 11, a rotating shaft, 12, a motor housing, 13, permanent magnets, 13-1, a first permanent magnet, 13-2, a second permanent magnet, 13-3, a third permanent magnet, 13-4, a fourth permanent magnet, 14, a magnetic pole axis, 15, electromagnetic torque, 16, permanent magnet torque, 17 and reluctance torque.
The specific embodiment is as follows:
the disclosure is further described below with reference to the drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
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 exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof. It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.
In the technical scheme disclosed in one or more embodiments, as shown in fig. 1, an asymmetric rotor is applied to a permanent magnet magnetic focusing type synchronous reluctance motor, and comprises a rotating shaft 11, a rotor core 6 fixed on the rotating shaft 11, wherein a plurality of magnetic poles are arranged on the rotor core 6, each magnetic pole is arranged on a rotor 5 at equal intervals, the number of the magnetic poles can be set according to specific requirements, and 4 magnetic poles are arranged in the embodiment, and the structure of each magnetic pole is the same. The geometric center line of each magnetic pole is a magnetic pole axis 14, each magnetic pole comprises a magnetism isolating bridge and a permanent magnet arranged in the magnetism isolating bridge, the magnetism isolating bridge and the permanent magnet extend along the direction of a rotating shaft and comprise U-shaped magnetism isolating bridges and strip-shaped magnetism isolating bridges, the U-shaped magnetism isolating bridges are arranged layer by layer from the axis of the rotating shaft to the edge of a rotor, the strip-shaped magnetism isolating bridges are arranged at the edge of the rotor and are semi-surrounded by the U-shaped magnetism isolating bridges of the innermost layer, each U-shaped magnetism isolating bridge on one side of the magnetic pole axis 14 is communicated through magnetism isolating materials, and each U-shaped magnetism isolating bridge on the other side of the magnetic pole axis is not communicated and has asymmetric opening angles. The magnetic bridge packing material can be resin or plastic to strengthen the structural strength of the rotor. The U-shaped structure is a structure with a narrower bottom surface and gradually enlarged openings, can have various structures, can be spliced by segments of multiple segments, and can also be in a smooth transition shape.
The embodiment is provided with 4 layers of magnetic isolation bridges, which respectively comprise a first layer of U-shaped magnetic isolation bridge 7, a second layer of U-shaped magnetic isolation bridge 8, a third layer of U-shaped magnetic isolation bridge 9 and a strip-shaped magnetic isolation bridge 10, wherein the U-shaped magnetic isolation bridges are arranged layer by layer from the axis of a rotating shaft to the edge of a rotor, and three layers of U-shaped magnetic isolation bridges are arranged from the rotating shaftThe magnetic isolation bridge 11 gradually decreases from inside to outside, the innermost first layer of magnetic isolation bridge 7 is the largest, the second layer of U-shaped magnetic isolation bridge 8 and the third layer of U-shaped magnetic isolation bridge 9 can be wrapped outside, and the third layer of U-shaped magnetic isolation bridge is also provided with a short strip-shaped magnetic isolation bridge 10. The right ends of the three-layer U-shaped magnetic isolating bridges shown in figures 1 and 2 are communicated through thin strip-shaped magnetic isolating bridges, and the opening angle of the left sides of the first layer U-shaped magnetic isolating bridge 7 and the second layer U-shaped magnetic isolating bridge 8 is delta 1 The opening angle of the left sides of the second layer U-shaped magnetic isolation bridge 8 and the third layer U-shaped magnetic isolation bridge is delta 2 ，δ 1 And delta 2 The sizes are different. The three layers of U-shaped magnetism isolating bridges in the illustration are asymmetric in left-right structure, so that asymmetric magnetic circuits are formed.
As a further improvement, the permanent magnets 13 are arranged asymmetrically, and may be arranged at the magnetic pole axis on at least one layer of U-like magnetic isolation bridge near the rotating shaft, and on the side walls of the non-communicating sides of the U-like magnetic isolation bridge of the innermost layer and the outermost layer, respectively. The permanent magnets extend a certain thickness in the direction of the rotation axis 11. Specifically, in this embodiment, permanent magnets with the same size are disposed at the positions of the magnetic pole axes 14 of the first layer U-shaped magnetic isolation bridge 7 and the second layer U-shaped magnetic isolation bridge 8. The first layer U-shaped magnetic isolation bridge 7 is provided with a first permanent magnet 13-1, the second layer U-shaped magnetic isolation bridge 8 is provided with a second permanent magnet 13-2, the first permanent magnet 13-1 and the second permanent magnet 13-2 can be cuboid, and the end face centers of the first permanent magnet 13-1 and the second permanent magnet 13-2 are respectively arranged on the magnetic pole axis 14. Permanent magnets are respectively arranged on the left side walls of the first layer U-shaped magnetic isolation bridge 7 and the third layer U-shaped magnetic isolation bridge 9 shown in fig. 2, third permanent magnets 13-3 are respectively arranged on the left side walls of the first layer U-shaped magnetic isolation bridge 7, and fourth permanent magnets 13-4 are respectively arranged on the left side walls of the third layer U-shaped magnetic isolation bridge 9. And the third permanent magnet 13-3 and the fourth permanent magnet 13-4 are different in volume size. In this way, the permanent magnet is arranged on one side of the magnetism isolating bridge, so that the positions of the permanent magnet are asymmetric. The permanent magnets are also provided in asymmetric sizes.
The magnetic pole structure of the rotor 5 after the permanent magnets are arranged, the permanent magnets 13 divide the magnetic isolation bridge into a plurality of sections, and the first layer U-shaped magnetic isolation bridge 7 comprises a first layer magnetic isolation bridge A7-1, a first layer magnetic isolation bridge B7-2 and a first layer magnetic isolation bridge C7-3. The lengths of the three sections of the magnetic isolation bridges of the first layer U-shaped magnetic isolation bridge 7 are different, and likewise, the second layer U-shaped magnetic isolation bridge 8 comprises a second layer magnetic isolation bridge A8-1 and a second layer magnetic isolation bridge B8-2, the third layer U-shaped magnetic isolation bridge 9 comprises a third layer magnetic isolation bridge A9-1 and a third layer magnetic isolation bridge B9-2, and the structure of the magnetic isolation bridge is more asymmetric after the permanent magnets are arranged.
As a further improvement, the asymmetry of the rotor structure is further improved, the left-right asymmetry of the magnetic isolation bridge is further improved, the side wall of the side, which is not communicated with the U-shaped magnetic isolation bridge, can be connected to the rotor edge, and the side wall of the side, which is communicated with the U-shaped magnetic isolation bridge, is isolated from the rotor edge. Specifically, as shown in fig. 2, the first layer magnetism isolating bridge C7-3, the second layer magnetism isolating bridge B8-2 and the third layer magnetism isolating bridge B9-2 are respectively connected with the edge of the rotor. The first layer of magnetism isolating bridge A7-1, the second layer of magnetism isolating bridge A8-1 and the third layer of magnetism isolating bridge A9-1 are arranged at a certain distance from the edge of the rotor, so that the structure of the magnetism isolating bridge is more asymmetric left and right.
The permanent magnet can be ferrite or neodymium-iron-boron permanent magnet. The filling material of the magnetic isolation bridge can be resin or plastic, so that the structural strength of the rotor is improved.
According to the rotor, through improvement of an asymmetric structure of the rotor, the asymmetric structure comprises left and right asymmetry of a magnetism isolating bridge, the size and the shape of the magnetism isolating bridge are asymmetric, and the size and the arrangement position of the permanent magnet are asymmetric.
After improvement, the coupling superposition relation of the permanent magnet torque and the reluctance torque of the reluctance motor applying the rotor can be changed, so that the maximum values of the permanent magnet torque and the reluctance torque can be superposed at the same current phase angle, two torque components of the motor are fully utilized, and the electromagnetic torque of the motor is obviously improved.
Example 2
The embodiment provides a high-performance permanent magnet magnetic focusing type synchronous reluctance motor, which comprises a motor shell 12, and a stator 1 and a rotor 5 which are arranged in the motor shell 12, wherein the rotor 5 and the stator 1 are coaxially arranged, the rotor is arranged in the stator through a rotating shaft 11, and the rotor adopts an asymmetric rotor in the embodiment 1.
The stator 1 includes a stator core 2 and a plurality of stator windings 3 provided in stator slots, and the stator core 2 may be formed by laminating and pressing electromagnetic silicon steel plates, which are thin plates made of iron to which silicon is added in order to reduce eddy current loss, in the direction of the rotation axis. The stator core 2 may be cylindrical and extends in the direction of the rotation shaft 11.
Stator winding 3 is set in stator slot, and radial gap 4 is formed between stator winding and rotor periphery after stator slot is set.
The stator slots are arranged at equal intervals along the circumferential direction on the inner periphery of the stator, and extend in a convex shape from the stator core side to the rotating shaft direction. The number of stator slots may be set as desired, with 24 stator slots being provided in this embodiment, while 24 stator windings 3 are provided.
As a further improvement, stator grooves are arranged on the inner periphery of the stator 1 at intervals in the circumferential direction and extend in the direction of the rotation shaft 11, the stator grooves extend in a convex shape from the stator core 2 side toward the rotation center of the rotor, respectively, and a narrower end face of the convex stator groove faces the outer periphery of the rotor 5 with the radial gap 4 interposed therebetween.
To illustrate the effect of the improvement of the present embodiment, the wiring of the armature winding of the permanent magnet concentrated synchronous reluctance motor of the present embodiment may be wired in the manner of fig. 3. And (3) carrying out torque characteristic analysis on the improved permanent magnet magnetic focusing synchronous reluctance motor, wherein as shown in fig. 4, when the permanent magnet magnetic focusing synchronous reluctance motor operates normally, under the condition that the maximum values of the permanent magnet torque 16 and the reluctance torque 17 are 1 per unit value, the coupling superposition relation of the permanent magnet torque and the reluctance torque of the reluctance motor is changed through an asymmetric rotor structure, so that the maximum values of the permanent magnet torque 16 and the reluctance torque 17 can be superposed at the same current phase angle, and the superposed electromagnetic torque 15 reaches 2.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
While the specific embodiments of the present disclosure have been described above with reference to the drawings, it should be understood that the present disclosure is not limited to the embodiments, and that various modifications and changes can be made by one skilled in the art without inventive effort on the basis of the technical solutions of the present disclosure while remaining within the scope of the present disclosure.
Claims (5)
1. An asymmetric rotor is applied to a high-performance permanent magnet magnetic focusing type synchronous reluctance motor and is characterized in that: the magnetic pole structure comprises a rotating shaft, a rotor core fixed on the rotating shaft, a plurality of magnetic poles are arranged on the rotor core, the geometric center line of each magnetic pole is a magnetic pole axis, each magnetic pole comprises a magnetic isolation bridge and a permanent magnet arranged in the magnetic isolation bridge, the magnetic isolation bridge and the permanent magnet extend along the direction of the rotating shaft, the magnetic isolation bridge comprises a U-like magnetic isolation bridge and a strip-like magnetic isolation bridge, the magnetic isolation bridge is arranged layer by layer from the axis of the rotating shaft to the edge of the rotor, the strip-like magnetic isolation bridge is arranged at the edge of the rotor, each layer of U-like magnetic isolation bridge positioned at one side of the magnetic pole axis is communicated through a magnetic isolation material, and each layer of U-like magnetic isolation bridge positioned at the other side of the magnetic pole axis is not communicated and has an asymmetric opening angle; the opening angle of the left sides of the first layer U-shaped magnetic isolation bridge and the second layer U-shaped magnetic isolation bridge is delta 1, the opening angle of the left sides of the second layer U-shaped magnetic isolation bridge and the third layer U-shaped magnetic isolation bridge is delta 2, and the delta 1 and the delta 2 are different in size; permanent magnets are arranged at the axial line of the magnetic pole on at least one layer of U-shaped magnetic isolation bridge close to the rotating shaft, and permanent magnets are respectively arranged on the side walls of the non-communicated sides of the U-shaped magnetic isolation bridge of the innermost layer and the outermost layer;
the permanent magnets on each layer of U-shaped magnetism isolating bridge arranged at the axis of the magnetic pole are identical in shape and size;
the permanent magnets arranged on the side walls of the non-communicated sides of the U-shaped magnetism isolating bridges of the innermost layer and the outermost layer are different in size; the side wall of the side, which is not communicated with the U-shaped magnetic isolation bridge, is connected to the edge of the rotor, and the side wall of the side, which is communicated with the U-shaped magnetic isolation bridge, is isolated from the edge of the rotor;
the permanent magnet is ferrite or neodymium iron boron and is of a magnetic focusing configuration structure.
2. An asymmetric rotor as recited in claim 1, wherein: the magnetic isolation bridge filling material is resin or plastic.
3. A high-performance permanent magnet magnetic-gathering synchronous reluctance motor is characterized in that: comprising a motor housing, and a stator and a rotor arranged in the motor housing, the rotor and the stator being arranged coaxially, the rotor being arranged inside the stator by means of a rotation shaft, the rotor being an asymmetric rotor according to any one of claims 1-2.
4. A high performance permanent magnet concentrated synchronous reluctance machine as claimed in claim 3, wherein: the stator comprises a stator core and stator slots, stator windings are arranged in the stator slots, and radial gaps are formed between the stator slots and the periphery of the rotor.
5. A high performance permanent magnet concentrated synchronous reluctance machine as claimed in claim 3, wherein: the stator slots are arranged at equal intervals along the circumferential direction on the inner periphery of the stator, and extend in a convex shape from the stator core side to the rotating shaft direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910271920.XA CN109802504B (en) | 2019-04-04 | 2019-04-04 | Permanent magnet magnetic-gathering type synchronous reluctance motor and asymmetric rotor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910271920.XA CN109802504B (en) | 2019-04-04 | 2019-04-04 | Permanent magnet magnetic-gathering type synchronous reluctance motor and asymmetric rotor thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109802504A CN109802504A (en) | 2019-05-24 |
| CN109802504B true CN109802504B (en) | 2023-12-08 |
Family
ID=66563333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910271920.XA Active CN109802504B (en) | 2019-04-04 | 2019-04-04 | Permanent magnet magnetic-gathering type synchronous reluctance motor and asymmetric rotor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109802504B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113994569A (en) * | 2019-09-24 | 2022-01-28 | 株式会社东芝 | Rotor of rotating electric machine |
| CN113410931B (en) * | 2020-03-16 | 2023-01-31 | 安徽威灵汽车部件有限公司 | Rotor of motor, motor and vehicle |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5097166A (en) * | 1990-09-24 | 1992-03-17 | Reuland Electric | Rotor lamination for an AC permanent magnet synchronous motor |
| JP2000060039A (en) * | 1998-08-06 | 2000-02-25 | Sharp Corp | Rotor structure for synchronous machine, synchronous type motor, and synchronous type generator |
| JP2001197694A (en) * | 2000-01-14 | 2001-07-19 | Sharp Corp | Rotor for synchronous machine, synchronous motor and synchronous generator |
| JP2008104353A (en) * | 2008-01-16 | 2008-05-01 | Mitsubishi Electric Corp | Permanent magnet type motor |
| CN105048671A (en) * | 2015-08-19 | 2015-11-11 | 武汉迈信电气技术有限公司 | Asymmetric V-shaped rotor punching sheet and built-in permanent-magnetic motor using the same |
| CN105914925A (en) * | 2016-05-18 | 2016-08-31 | 江苏仪能电机有限公司 | High-torque-density permanent magnet reluctance synchronous motor rotor structure |
| CN105958692A (en) * | 2016-07-15 | 2016-09-21 | 东南大学 | Permanent magnet reluctance synchronous motor rotor structure having high torque density |
| CN107852076A (en) * | 2015-08-05 | 2018-03-27 | Abb瑞士股份有限公司 | For the rotor of motor and the manufacture method of rotor |
| CN107979197A (en) * | 2017-11-08 | 2018-05-01 | 卧龙电气集团股份有限公司 | One kind uses asymmetrical rotor punching permanent magnetism assist in synchronization reluctance motor |
| CN109067039A (en) * | 2018-09-12 | 2018-12-21 | 南京航空航天大学 | A kind of asymmetric buttferfly-type internal permanent magnet synchronous motor |
| CN209402272U (en) * | 2019-04-04 | 2019-09-17 | 山东大学 | A kind of permanent magnetism magneticfocusing synchronous magnetic resistance motor and its asymmetrical rotor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITTO20010182A1 (en) * | 2001-03-02 | 2002-09-02 | Fiat Ricerche | SYNCHRONOUS TYPE ELECTRIC MACHINE. |
| JP4404223B2 (en) * | 2007-03-20 | 2010-01-27 | 株式会社安川電機 | Electromagnetic steel sheet forming body, electromagnetic steel sheet laminate, permanent magnet type synchronous rotating electric machine equipped with the same, permanent magnet type synchronous rotating electric machine, vehicle using the rotating electric machine, elevator, fluid machine, processing machine |
-
2019
- 2019-04-04 CN CN201910271920.XA patent/CN109802504B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5097166A (en) * | 1990-09-24 | 1992-03-17 | Reuland Electric | Rotor lamination for an AC permanent magnet synchronous motor |
| JP2000060039A (en) * | 1998-08-06 | 2000-02-25 | Sharp Corp | Rotor structure for synchronous machine, synchronous type motor, and synchronous type generator |
| JP2001197694A (en) * | 2000-01-14 | 2001-07-19 | Sharp Corp | Rotor for synchronous machine, synchronous motor and synchronous generator |
| JP2008104353A (en) * | 2008-01-16 | 2008-05-01 | Mitsubishi Electric Corp | Permanent magnet type motor |
| CN107852076A (en) * | 2015-08-05 | 2018-03-27 | Abb瑞士股份有限公司 | For the rotor of motor and the manufacture method of rotor |
| CN105048671A (en) * | 2015-08-19 | 2015-11-11 | 武汉迈信电气技术有限公司 | Asymmetric V-shaped rotor punching sheet and built-in permanent-magnetic motor using the same |
| CN105914925A (en) * | 2016-05-18 | 2016-08-31 | 江苏仪能电机有限公司 | High-torque-density permanent magnet reluctance synchronous motor rotor structure |
| CN105958692A (en) * | 2016-07-15 | 2016-09-21 | 东南大学 | Permanent magnet reluctance synchronous motor rotor structure having high torque density |
| CN107979197A (en) * | 2017-11-08 | 2018-05-01 | 卧龙电气集团股份有限公司 | One kind uses asymmetrical rotor punching permanent magnetism assist in synchronization reluctance motor |
| CN109067039A (en) * | 2018-09-12 | 2018-12-21 | 南京航空航天大学 | A kind of asymmetric buttferfly-type internal permanent magnet synchronous motor |
| CN209402272U (en) * | 2019-04-04 | 2019-09-17 | 山东大学 | A kind of permanent magnetism magneticfocusing synchronous magnetic resistance motor and its asymmetrical rotor |
Non-Patent Citations (1)
| Title |
|---|
| Performance Improvement of Ferrite-Assisted Synchronous Reluctance Machines Using Asymmetrical Rotor Configurations;Wenliang Zhao;IEEE TRANSACTIONS ON MAGNETICS;第51卷(第11期);第1-4页、图3-12 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109802504A (en) | 2019-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6064132A (en) | Armature structure of a radial rib winding type rotating electric machine | |
| CN102157998B (en) | Rotor of built-in permanent magnet motor and magnetic steel structural parameter determining method thereof | |
| CN109274234B (en) | Composite excitation amorphous alloy axial reluctance motor | |
| CN112564346B (en) | High-torque-density axial magnetic field permanent magnet motor rotor structure and motor thereof | |
| WO2013166919A1 (en) | Multiphase permanent magnet motor having leakage reactance adjustable structure | |
| CN108429375B (en) | Rotor structure, permanent magnet auxiliary synchronous reluctance motor and electric automobile | |
| CN110323863B (en) | Asymmetric mixed magnetic pole type permanent magnet motor | |
| CN110504811B (en) | Dislocation birotor magnetic flux switching type permanent magnet motor and power generation equipment | |
| CN110601481A (en) | Birotor permanent magnet synchronous reluctance motor and configuration method | |
| CN103222165A (en) | Three phase permanent magnet servomotor | |
| CN109802504B (en) | Permanent magnet magnetic-gathering type synchronous reluctance motor and asymmetric rotor thereof | |
| CN109245468B (en) | Birotor synchronous motor adopting permanent magnet auxiliary cage barrier rotor | |
| CN103269133A (en) | Transverse flux permanent magnetic or reluctance permanent magnetic motor of ring box structure | |
| CN110838779B (en) | Mixed excitation wound rotor and mixed excitation wound synchronous motor | |
| CN210669650U (en) | Tooth yoke separated permanent magnet motor stator core and permanent magnet motor | |
| CN216216145U (en) | Permanent magnet synchronous motor rotor punching sheet structure, rotor and motor thereof | |
| CN113300515B (en) | Disc type axial magnetic field permanent magnet brushless motor structure containing tangential magnet structure and method thereof | |
| CN210350986U (en) | Birotor permanent magnet synchronous reluctance motor | |
| CN102013778A (en) | Permanent magnet synchronous motor with wide field-weakening and speed regulation range | |
| CN107425629B (en) | Permanent magnet motor rotor | |
| CN104184291A (en) | Double half-pole asynchronous-start permanent magnet synchronous motor and pole-changing speed- changing method | |
| CN209402272U (en) | A kind of permanent magnetism magneticfocusing synchronous magnetic resistance motor and its asymmetrical rotor | |
| CN107579638B (en) | Double-stator magnetic-gathering-magnetic-resistance hybrid rotor motor | |
| CN102347669A (en) | Limited angle torque motor and method for manufacturing same | |
| CN103138517A (en) | Rotor of asynchronous starting permanent magnet motor and asynchronous starting permanent magnet motor using rotor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |