CN213185663U - Axial synchronous reluctance motor - Google Patents
Axial synchronous reluctance motor Download PDFInfo
- Publication number
- CN213185663U CN213185663U CN202021209068.8U CN202021209068U CN213185663U CN 213185663 U CN213185663 U CN 213185663U CN 202021209068 U CN202021209068 U CN 202021209068U CN 213185663 U CN213185663 U CN 213185663U
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- silicon steel
- stator core
- oriented silicon
- magnetic isolation
- synchronous reluctance
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 35
- 238000002955 isolation Methods 0.000 claims abstract description 53
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 52
- 238000004804 winding Methods 0.000 claims abstract description 41
- 230000005389 magnetism Effects 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims description 38
- 230000004907 flux Effects 0.000 claims description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 239000002356 single layer Substances 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 10
- 239000004593 Epoxy Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses an axial synchronous reluctance motor, including rotor core, magnetism bridge, stator core, armature winding, stator core is an annular structure that a plurality of tooth portions enclose, twines armature winding on the circumference terminal surface that four faces constitute before, after, left and right of every tooth portion, and stator core and armature winding are encapsulated into a complete ring through epoxy; the two sides of the stator core are respectively provided with an annular magnetic isolation bridge, the two magnetic isolation bridges are arranged oppositely, and the outer side surfaces of the two magnetic isolation bridges are fixedly connected with an annular rotor core. The axial synchronous reluctance motor of the utility model adopts the combination of the orientation silicon steel sheet material and the YASA structure, and the stator core adopts the more compact YASA structure, thus improving the space utilization rate of the motor; the magnetic isolation bridge prepared by loading the oriented silicon steel sheet material with strong magnetic conductivity on the rotor core conducts magnetism, so that the loss of the core is reduced, and the torque and the efficiency of the motor are improved.
Description
Technical Field
The utility model relates to the technical field of electric machines, concretely relates to axial synchronous reluctance motor.
Background
The synchronous reluctance motor is a motor with certain potential, and under the condition that rare earth materials are expensive and limited in quantity, compared with a permanent magnet motor, the synchronous reluctance motor is more and more important to research on motors which reduce the utilization of permanent magnets and even remove the permanent magnets. The synchronous reluctance motor is a motor which does not use permanent magnet materials, has higher motor torque and efficiency and is applied in a large scale at present. Because the synchronous reluctance motor only adopts armature excitation, the motor does not need weak magnetism when running at high speed, thereby having wide speed regulation range. Secondly, because the structure of the motor rotor is simpler, the assembly and maintenance are easier.
The existing motor has high iron core loss and low space utilization rate; the conventional synchronous reluctance motor is not perfect in structure, and in the prior published patent, a magnetic isolation bridge and a stator which form a magnetic flux barrier are mostly designed in the radial direction, so that the optimal design in the field of an axial motor is lacked.
Therefore, how to design and optimize the synchronous reluctance motor in the axial field, improve the compactness and space utilization rate of the motor structure, and reduce the iron core loss of the motor becomes an important subject.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an axial synchronous reluctance motor, which aims to solve the technical problems existing in the prior art, and adopts the orientation silicon steel sheet material to improve the magnetic conductivity of the motor and reduce the loss of a motor core; the YASA (yoke-free segmented armature) structure is adopted to improve the space utilization rate of the synchronous reluctance motor and reduce the weight of the machine body on the premise of ensuring the reliability of the motor.
In order to achieve the purpose, the utility model adopts the following technical scheme: an axial synchronous reluctance motor is designed, and is characterized in that the motor adopts a YASA structure and comprises a rotor core, a magnetism isolating bridge, a stator core and an armature winding, wherein the stator core is of an annular structure formed by a plurality of tooth parts, the armature winding is wound on the circumferential end surface formed by the front surface, the rear surface, the left surface and the right surface of each tooth part, and the stator core and the armature winding are packaged into a complete ring through epoxy resin; two sides of the stator core are respectively provided with an annular magnetic isolation bridge, the two magnetic isolation bridges are oppositely arranged, and the outer side surfaces of the two magnetic isolation bridges are respectively fixedly connected with an annular rotor core; the outer diameter of the magnetic isolation bridge is smaller than that of the rotor core, and the inner diameter of the magnetic isolation bridge is larger than that of the rotor core; the sizes of the inner diameter and the outer diameter of the stator core and the rotor core are consistent; a gap is reserved between the stator core and the magnetic isolation bridge;
the magnetic isolation bridge is of an annular structure formed by connecting a plurality of groups of magnetic isolation units, an air gap is reserved between two adjacent groups of magnetic isolation units, and the lower end of the air gap extends to the rotor iron core; each group of magnetism isolating units is formed by laminating a plurality of U-shaped oriented silicon steel sheets, the length of the U-shaped oriented silicon steel sheet on the outermost layer is longest, the width of the U-shaped oriented silicon steel sheet on the outermost layer is largest, the length and the width of the U-shaped oriented silicon steel sheet on the inner layer are gradually reduced, and the U-shaped oriented silicon steel sheet on the innermost layer is positioned in the middle of the U-shaped oriented silicon steel sheet on the outermost layer; the heights of the U-shaped oriented silicon steel sheets are sequentially reduced from the outer layer to the inner layer, so that the heights of the U-shaped oriented silicon steel sheets after the inner layer is overlapped are the same as the heights of the U-shaped oriented silicon steel sheets on the outermost layer; the multi-layer U-shaped oriented silicon steel sheets are vertically fixed on the rotor core in a punching, screw installing and other modes, and the opening ends of the U-shaped oriented silicon steel sheets face the stator core.
Compared with the prior art, the beneficial effects of the utility model are that: the axial synchronous reluctance motor of the utility model adopts the combination of the orientation silicon steel sheet material and the YASA (yoke-free segmented armature) structure, and the stator core adopts the more compact YASA structure, thereby improving the space utilization rate of the motor; the magnetic isolation bridge prepared by loading the oriented silicon steel sheet material with strong magnetic conductivity on the rotor core conducts magnetism, reduces the core loss, improves the torque and the efficiency of the motor, and provides beneficial exploration for the research of the synchronous reluctance motor.
Drawings
Fig. 1 is a schematic perspective view of a single-layer armature winding according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a single-layer armature winding according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a stator core of a single-layer armature winding according to an embodiment of the present invention.
Fig. 4 is a schematic perspective view of a double-layer armature winding according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a double-layer armature winding according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of a stator core of a double-layer armature winding according to an embodiment of the present invention.
Fig. 7 is a schematic top view of an embodiment of the axially synchronous reluctance machine of the present invention.
Fig. 8 is a schematic view of the installation position of the permanent magnet according to an embodiment of the present invention.
Fig. 9 is a schematic diagram of an armature winding structure of an axial synchronous reluctance machine according to an embodiment of the present invention.
Fig. 10 is a schematic structural diagram of a rotor core and a magnetic isolation bridge according to an embodiment of the present invention.
Fig. 11 is a flux linkage graph of an embodiment of the axially synchronous reluctance machine of the present invention.
Wherein 1-rotor core; 2-magnetic isolation bridge; 3-a stator core; 4-an armature winding; 5-permanent magnet.
Detailed Description
The present invention will be further explained by way of examples with reference to the accompanying drawings, which are not intended to limit the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "axial," "lateral," "radial," "length," "width," "upper," "lower," "front," "rear," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The utility model provides an axial synchronous reluctance motor, this motor adopt YASA structure (no yoke segmentation armature structure), including rotor core 1, separate magnetic bridge 2, stator core 3, armature winding 4, stator core 3 is an annular structure that a plurality of tooth enclose, twines armature winding 4 on the circumference terminal surface that four faces constitute before, after, left and right of every tooth, and stator core 3 and armature winding 4 are encapsulated into a complete ring through epoxy; two sides of the stator core 3 are respectively provided with an annular magnetic isolation bridge 2, the two magnetic isolation bridges 2 are oppositely arranged, and the outer side surfaces of the two magnetic isolation bridges 2 are respectively fixedly connected with an annular rotor core 1; the outer diameter of the magnetic isolation bridge 2 is smaller than that of the rotor core 1, and the inner diameter of the magnetic isolation bridge 2 is larger than that of the rotor core 1. The stator core 3 has the same inner and outer diameters as the rotor core 1. A gap is reserved between the stator core 3 and the magnetic isolation bridge 2.
The magnetic isolation bridge 2 is of an annular structure formed by connecting a plurality of groups of magnetic isolation units, an air gap is reserved between two adjacent groups of magnetic isolation units, and the lower end of the air gap extends to the rotor iron core 1. Each set of magnetic isolation units is formed by laminating a plurality of U-shaped oriented silicon steel sheets, the length of the U-shaped oriented silicon steel sheet on the outermost layer is longest, the width of the U-shaped oriented silicon steel sheet on the outermost layer is largest, the length and the width of the U-shaped oriented silicon steel sheet on the inner layer are gradually reduced, and the U-shaped oriented silicon steel sheet on the innermost layer is positioned in the middle of the U-shaped oriented silicon steel sheet on the outermost layer. The heights of the U-shaped oriented silicon steel sheets are sequentially reduced from the outer layer to the inner layer, so that the heights of the U-shaped oriented silicon steel sheets after the inner layer is overlapped are the same as the heights of the U-shaped oriented silicon steel sheets on the outermost layer; the multi-layer U-shaped oriented silicon steel sheets are vertically fixed on the rotor core 1 in a manner of punching, installing screws and the like, and the open ends of the U-shaped oriented silicon steel sheets face the stator core 3.
The arc length of the inner side of each magnetism isolating unit is smaller than that of the outer side of each magnetism isolating unit, so that the width of an air gap reserved between every two adjacent magnetism isolating units is fixed.
The rotor core 1 and the stator core 3 are made of oriented silicon steel materials.
Specifically, the armature windings 4 on the stator core 3 are single-layer, each tooth portion on the stator core is wound with one armature winding 4, and all the armature windings 4 are located at the same height; in addition, the armature winding 4 on the stator core 3 may also be a double-layer structure, the upper and lower parts of each tooth part on the stator core are respectively wound with one armature winding 4, all the armature windings 4 positioned on the upper part are positioned at the same height, all the armature windings 4 positioned on the lower part are positioned at the same height, and the armature winding 4 on the upper part is separated from the armature winding 4 on the lower part by sleeving a non-magnetic ring in the middle of the outer periphery of the stator core 3.
The stator core 3 is provided with 36 tooth portions, and each tooth portion is of a structure with a narrow inner portion and a wide outer portion.
The magnetic isolation bridge 2 is formed by connecting 24 groups of magnetic isolation units, and an air gap of 1-2mm is reserved between every two adjacent groups of magnetic isolation units.
Because the unidirectional magnetic permeability of the oriented silicon steel sheet material is strong, the design of the magnetic isolation bridge 2 perpendicular to the rotor core 1 can enable more magnetic lines of force to pass through the magnetic isolation bridge 2.
Three-phase sinusoidal current (a phase, B phase, and C phase) is applied to the armature winding 4 of the motor having the stator core of a single-layer structure, and a flux linkage graph is obtained, as shown in fig. 11. The flux linkage is the magnetic flux multiplied by the number of turns of the coil, and the flux linkage refers to the magnetic flux of the loop of the current loop, and the magnetic flux represents the amount of the magnetic flux passing through a unit conductor section, namely the intensity of the magnetic flux. The synchronous reluctance motor is characterized in that three-phase sinusoidal alternating current is introduced into the armature winding 4, a three-phase sinusoidal magnetic field can be excited around the synchronous reluctance motor according to the moving charges, and the flux linkage of A, B, C phases is 120 degrees different from each other. Different currents correspond to flux linkages with different sizes, and the larger the current peak value is, the larger the flux linkage peak value is. As shown in fig. 11, the motor of the present invention has a large magnetic flux intensity.
Furthermore, in order to improve the unidirectional magnetic conductivity of the magnetic isolation bridge 2, a permanent magnet 5 is arranged in the magnetic isolation bridge 2 for improving the output torque of the motor.
Specifically, a sheet-shaped permanent magnet 5 is disposed on the inner side of the bottom of each U-shaped oriented silicon steel sheet of the magnetic shield unit, and a gap between the two U-shaped oriented silicon steel sheets is filled with a non-magnetic conductive material.
The U-shaped oriented silicon steel sheets constituting the magnetic isolation unit are 5 layers, and holes and screws are punched on each layer of U-shaped oriented silicon steel sheets and permanent magnets and are fixed on the rotor core 1. The thickness of each layer of U-shaped grain-oriented silicon steel sheet is not uniform.
The utility model discloses axial synchronous reluctance motor's theory of operation and process: the stator core 3 and the rotor core 1 are respectively connected with a motor shaft through bearings arranged on the inner diameter of the stator core and the rotor core, when the motor runs, the stator core 3 is static, the two rotor cores 1 rotate along the axial direction, the motor is excited by an armature winding 4, and a flux linkage respectively passes through a stator tooth part, an air gap between the stator core 3 and the rotor core 1, a magnetic isolation bridge 2 forming a flux barrier on the rotor core 1, and the air gap between the stator core 3 and the rotor core 1 and then returns to the stator tooth part. According to the principle of minimum magnetic resistance, most of flux linkage passes through the stator core 3 and the rotor core 1 with small magnetic resistance, and only a small part passes through the magnetic isolation bridge 2 with large magnetic resistance. And the magnetic isolation bridge 2 conducts magnetism in a single direction, and the magnetic isolation bridge 2 is perpendicular to the rotor core 1, so that more magnetic lines of force can pass through the magnetic isolation bridge 2.
The magnetic isolation bridge 2 is proposed in the axial motor, has few axial design's synchronous reluctance motor in the design in the past, the utility model discloses axial synchronous reluctance motor has taken the method that orientation silicon steel sheet material and compact YASA structure combined together, utilizes the characteristics that orientation silicon steel sheet folk-directional magnetic permeability is high, magnetic conductivity is strong, has reduced the iron core loss of motor, has effectively improved the salient rate of motor to the torque density of motor has further been promoted.
The motor of the embodiment has the advantages of small torque pulsation, small iron core loss and high efficiency compared with other axial motors, and can effectively reduce noise when being applied to indoor air conditioners, refrigerators and other electrical appliances.
While the invention has been described in conjunction with specific embodiments thereof, it will be understood that it is capable of further modifications. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains and as may be applied to the essential features hereinbefore set forth.
As the present invention may be embodied in several forms without departing from the spirit of the essential characteristics of the invention, it should also be understood that the above-described embodiments are not intended to limit the present invention unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims. The described embodiments are to be considered in all respects only as illustrative and not restrictive.
Various modifications and equivalent arrangements are intended to be included within the spirit and scope of the invention and the appended claims. The detailed description is, therefore, to be understood as an illustrative explanation of the various ways in which the principles of the invention may be practiced. In the claims that follow, means-plus-function clauses are intended to cover the structures described herein as performing the defined function and not only structural equivalents but also equivalent structures.
The utility model discloses the nothing is mentioned the part and is applicable to prior art.
Claims (10)
1. An axial synchronous reluctance motor is characterized in that the motor adopts a YASA structure and comprises a rotor core, a magnetism isolating bridge, a stator core and an armature winding, wherein the stator core is of an annular structure surrounded by a plurality of tooth parts, the armature winding is wound on the circumferential end surface formed by the front surface, the rear surface, the left surface and the right surface of each tooth part, and the stator core and the armature winding are packaged into a complete ring through epoxy resin; two sides of the stator core are respectively provided with an annular magnetic isolation bridge, the two magnetic isolation bridges are oppositely arranged, and the outer side surfaces of the two magnetic isolation bridges are respectively fixedly connected with an annular rotor core; the outer diameter of the magnetic isolation bridge is smaller than that of the rotor core, and the inner diameter of the magnetic isolation bridge is larger than that of the rotor core; the sizes of the inner diameter and the outer diameter of the stator core and the rotor core are consistent; a gap is reserved between the stator core and the magnetic isolation bridge;
the magnetic isolation bridge is of an annular structure formed by connecting a plurality of groups of magnetic isolation units, an air gap is reserved between two adjacent groups of magnetic isolation units, and the lower end of the air gap extends to the rotor iron core; each group of magnetism isolating units is formed by laminating a plurality of U-shaped oriented silicon steel sheets, the length of the U-shaped oriented silicon steel sheet on the outermost layer is longest, the width of the U-shaped oriented silicon steel sheet on the outermost layer is largest, the length and the width of the U-shaped oriented silicon steel sheet on the inner layer are gradually reduced, and the U-shaped oriented silicon steel sheet on the innermost layer is positioned in the middle of the U-shaped oriented silicon steel sheet on the outermost layer; the heights of the U-shaped oriented silicon steel sheets are sequentially reduced from the outer layer to the inner layer, so that the heights of the U-shaped oriented silicon steel sheets after the inner layer is overlapped are the same as the heights of the U-shaped oriented silicon steel sheets on the outermost layer; the multi-layer U-shaped oriented silicon steel sheets are vertically fixed on the rotor core in a punching, screw installing and other modes, and the opening ends of the U-shaped oriented silicon steel sheets face the stator core.
2. The axially synchronous reluctance machine of claim 1, wherein the arc length of the inner side of each magnetism isolating unit is smaller than that of the outer side thereof, so that the width of the air gap left between two adjacent magnetism isolating units is fixed.
3. The axially synchronous reluctance machine of claim 1, wherein the rotor core and the stator core are made of oriented silicon steel.
4. The axially synchronous reluctance machine of claim 1, wherein the armature windings on the stator core are in a single layer, each tooth of the single layer being wound with one armature winding, all armature windings being located at the same height.
5. The axial synchronous reluctance machine of claim 1, wherein the armature windings of the stator core have a double-layered structure in which an armature winding is wound around each of upper and lower portions of each of the teeth, all the upper armature windings are located at the same height, and all the lower armature windings are located at the same height, and the upper armature windings are separated from the lower armature windings by fitting a non-magnetic ring around the middle portion of the outer circumference of the stator core.
6. The axially synchronous reluctance machine of claim 1, wherein the stator core is provided with 36 teeth, each tooth having a structure of inner width and outer width.
7. The axial synchronous reluctance machine of claim 1, wherein the magnetic isolation bridge is formed by connecting 24 magnetic isolation units, and an air gap of 1-2mm is left between two adjacent magnetic isolation units.
8. The axially synchronous reluctance machine of claim 1, wherein a permanent magnet is provided in the magnetism isolating unit.
9. The axially synchronous reluctance machine as claimed in claim 8, wherein a permanent magnet is provided in a sheet shape at an inner side of a bottom of each of the U-oriented silicon steel sheets of the magnet shield unit, and a gap between the two U-oriented silicon steel sheets is filled with a non-magnetic conductive material.
10. The axially synchronous reluctance machine as claimed in claim 8, wherein the U-oriented silicon steel sheets constituting the flux barrier unit are formed in 5 layers, and each of the U-oriented silicon steel sheets and the permanent magnet is perforated and fixed to the rotor core by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021209068.8U CN213185663U (en) | 2020-06-24 | 2020-06-24 | Axial synchronous reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021209068.8U CN213185663U (en) | 2020-06-24 | 2020-06-24 | Axial synchronous reluctance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213185663U true CN213185663U (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021209068.8U Withdrawn - After Issue CN213185663U (en) | 2020-06-24 | 2020-06-24 | Axial synchronous reluctance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213185663U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111654128A (en) * | 2020-06-24 | 2020-09-11 | 河北工业大学 | Axial synchronous reluctance motor |
| CN114337000A (en) * | 2021-11-03 | 2022-04-12 | 无锡川木智能装备有限公司 | A novel stator structure for improving motor efficiency |
-
2020
- 2020-06-24 CN CN202021209068.8U patent/CN213185663U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111654128A (en) * | 2020-06-24 | 2020-09-11 | 河北工业大学 | Axial synchronous reluctance motor |
| CN111654128B (en) * | 2020-06-24 | 2024-05-10 | 河北工业大学 | Axial synchronous reluctance motor |
| CN114337000A (en) * | 2021-11-03 | 2022-04-12 | 无锡川木智能装备有限公司 | A novel stator structure for improving motor efficiency |
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| Date | Code | Title | Description |
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Granted publication date: 20210511 Effective date of abandoning: 20240510 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210511 Effective date of abandoning: 20240510 |
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| AV01 | Patent right actively abandoned |