CN114123584A - Built-in vernier permanent magnet motor - Google Patents
Built-in vernier permanent magnet motor Download PDFInfo
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- CN114123584A CN114123584A CN202111388587.4A CN202111388587A CN114123584A CN 114123584 A CN114123584 A CN 114123584A CN 202111388587 A CN202111388587 A CN 202111388587A CN 114123584 A CN114123584 A CN 114123584A
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- 230000005284 excitation Effects 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims description 37
- 230000005291 magnetic effect Effects 0.000 claims description 33
- 239000002131 composite material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000004907 flux Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 230000001808 coupling effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 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 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The invention discloses a built-in vernier permanent magnet motor, and belongs to the technical field of motors. The method comprises the following steps: the stator and the rotor are coaxially sleeved, the rotor comprises a rotor iron core and a plurality of V-shaped permanent magnets uniformly distributed on the circumference of the rotor iron core, spoke-shaped permanent magnets are arranged between every two adjacent V-shaped permanent magnets, and the excitation directions of the adjacent V-shaped permanent magnets are opposite when the rotor works; the excitation directions of the adjacent spoke-shaped permanent magnets are opposite. The built-in vernier permanent magnet motor has a structure consisting of the built-in V-shaped structure and the spoke-shaped structure, so that the output torque of the electrode not only comprises a permanent magnet torque component, but also comprises a reluctance torque component. Compared with the traditional vernier permanent magnet motor, the vernier permanent magnet motor only has a permanent magnet torque component, so that the vernier permanent magnet motor has higher torque density. Meanwhile, the cogging torque and the torque ripple of the motor are smaller than those of the traditional built-in permanent magnet motor.
Description
Technical Field
The invention belongs to the technical field of motor correlation, and particularly relates to a built-in vernier permanent magnet motor.
Background
The traditional built-in permanent magnet synchronous motor has the advantages of high torque density, good speed regulation performance, high efficiency and the like, so that the built-in permanent magnet synchronous motor is suitable for various occasions, such as: electric vehicles, aerospace, and the like.
The cogging torque and the torque fluctuation of the existing built-in permanent magnet motor are large, and the cogging torque and the torque fluctuation can cause the vibration noise of the motor. Meanwhile, the torque density of the built-in permanent magnet motor is difficult to further improve through the existing design, and although the torque density of the motor can be improved through adopting advanced permanent magnet materials, improving the heat dissipation capacity of the motor and the like in the traditional method, the processing difficulty and the cost of the motor are inevitably increased.
The traditional built-in permanent magnet motor comprises a stator and a rotor, wherein a stator core of the stator is a semi-closed slot; the rotor includes rotor core and a set of V-arrangement permanent magnet, and the excitation direction of adjacent V-arrangement permanent magnet is opposite, and this motor pole slot cooperation relation needs to satisfy: and the permanent magnet pole pair Pm is the winding pole pair Pa. The structure relationship of the traditional built-in permanent magnet motor enables the line back electromotive force harmonic to be large, the stator magnetic field and the rotor magnetic field harmonic sequence are not staggered with each other, so that the coupling effect is strong, and the cogging torque and the torque fluctuation are large due to the coupling effect of the harmonic magnetic field. The permanent magnet of traditional vernier permanent magnet motor is mostly the surface mounting formula, and this kind of structure makes its salient pole ratio be 1, only has permanent magnetism torque component, does not have magnetic resistance torque component, and torque density is low.
Disclosure of Invention
Aiming at the defects and improvement requirements of the prior art, the invention provides an interior vernier permanent magnet motor, which aims to improve the torque density of the motor.
In order to achieve the above object, the present invention provides an interior vernier permanent magnet motor, comprising: the stator and the rotor are coaxially sleeved, the rotor comprises a rotor iron core and a plurality of V-shaped permanent magnets uniformly distributed on the circumference of the rotor iron core, spoke-shaped permanent magnets are arranged between every two adjacent V-shaped permanent magnets, and the excitation directions of the adjacent V-shaped permanent magnets are opposite when the rotor works; the excitation directions of the adjacent spoke-shaped permanent magnets are opposite.
Further, the stator comprises a stator core and an armature winding, the stator core is an open slot, the armature winding is located in the open slot, and the number of the V-shaped permanent magnets and the number of the stator teeth meet the following relation:
the total pole pair number of the rotor permanent magnets is equal to the number of the V-shaped permanent magnets/2, and the number of the stator teeth is equal to | the total pole pair number of the rotor permanent magnets +/-the pole pair number of the winding |.
Further, the armature winding is a concentrated winding or a distributed winding.
Further, the armature winding is a single-layer winding or a double-layer winding.
Further, the structure of the motor is a rotating motor structure, a linear motor structure or a cylindrical motor structure.
Further, the material of the stator or the rotor is solid steel, silicon steel sheets, amorphous ferromagnetic composite materials or SMC soft magnetic composite materials.
Further, the stator is sleeved outside the rotor, or the stator is sleeved inside the rotor.
Further, the electric machine is an electric motor or a generator.
Generally, by the above technical solution conceived by the present invention, the following beneficial effects can be obtained:
(1) according to the built-in vernier permanent magnet motor, the rotor permanent magnet is in a built-in V shape and a spoke shape, the structure enables the output torque of the built-in vernier permanent magnet motor not only to comprise a permanent magnet torque component, but also to comprise a reluctance torque component, and the traditional vernier permanent magnet motor only has a permanent magnet torque component, so that the built-in vernier permanent magnet motor has higher torque density compared with the traditional vernier permanent magnet motor.
(2) In addition, the stator slots in the permanent magnet motor are open slots, the stator teeth play a role in magnetic field modulation, the number Pa of the pole pairs of the stator winding is not equal to the number Pm of the pole pairs of the permanent magnets of the rotor, so that the rotating speed of a magnetic field is increased, and the pole-changing acceleration effect enables the torque density of the permanent magnet motor to be higher compared with that of a traditional built-in permanent magnet motor.
(3) According to the built-in vernier permanent magnet motor, the magnetic field modulation action of the stator teeth enables the harmonic sequences of the stator magnetic field and the rotor magnetic field to be staggered mutually, most higher harmonics cannot be coupled mutually, the traditional built-in permanent magnet motor has no magnetic field modulation action, the stator magnetic field and the rotor magnetic field harmonic sequences are not staggered mutually, so that the coupling effect is strong, and the coupling action of the harmonic magnetic field can cause cogging torque and torque fluctuation, so that the cogging torque and the torque fluctuation are smaller.
(4) Preferably, the magnetic fields generated by the V-shaped permanent magnet and the spoke-shaped permanent magnet are in series connection, the magnetomotive force of the two permanent magnets is superposed, the main flux is enhanced, and the torque density is improved.
In summary, the interior vernier permanent magnet motor of the present invention can improve the torque density of the motor, and has lower cogging torque and torque ripple.
Drawings
Fig. 1 is a schematic structural diagram of an interior vernier permanent magnet motor according to an embodiment of the present invention;
fig. 2(a) is a waveform and fourier decomposition of a permanent magnet magnetomotive force of an interior vernier permanent magnet motor according to an embodiment of the present invention;
fig. 2(b) is an air gap ratio permeance waveform and fourier decomposition of an interior vernier permanent magnet motor provided by an embodiment of the present invention;
fig. 2(c) is a no-load air gap flux density waveform and fourier decomposition of an interior vernier permanent magnet motor according to an embodiment of the present invention;
fig. 3(a) is an output torque waveform of the interior vernier permanent magnet motor provided in the embodiment of the present invention when the internal power factor angle is zero;
figure 3(b) is the average torque of an interior vernier permanent magnet machine provided by an embodiment of the present invention at different internal power factor angles;
fig. 4 shows the no-load magnetic line distribution of the interior vernier permanent magnet motor according to the embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a conventional interior permanent magnet machine;
fig. 6(a) is a schematic diagram comparing the line back-emf waveforms of an interior vernier permanent magnet motor provided in an embodiment of the present invention and a conventional interior permanent magnet motor;
figure 6(b) is a schematic diagram comparing the line back emf harmonic amplitudes of an interior vernier permanent magnet machine provided in an embodiment of the present invention with a conventional interior permanent magnet machine;
figure 7 is a schematic diagram comparing cogging torque for an interior vernier permanent magnet machine in accordance with an embodiment of the present invention with a conventional interior permanent magnet machine;
figure 8 is a schematic diagram comparing the torque ratings of an interior vernier permanent magnet machine provided in accordance with an embodiment of the present invention with a conventional interior permanent magnet machine;
fig. 9 is a schematic diagram comparing average torque of an interior vernier permanent magnet motor provided in an embodiment of the present invention with that of a conventional interior permanent magnet motor at different current densities.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:
1-stator core, 2-armature winding, 3-rotor core, 5-V-shaped permanent magnet and 6-spoke permanent magnet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "left", and the like are used for indicating the orientation relation based on the orientation relation shown in the drawings or the orientation relation of the product which is usually put in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element which is referred to must have a specific orientation configuration and operation, and thus, cannot be construed as limiting the present invention.
As shown in fig. 1, an interior vernier permanent magnet motor according to an embodiment of the present invention includes a stator and a rotor, and the stator and the rotor are coaxially sleeved. Wherein, the stator includes: the stator comprises a stator core 1 and an armature winding 2 positioned in a stator core groove, wherein the stator core is an open slot; the rotor includes: rotor core 3 and a plurality of V-arrangement permanent magnet 5 of evenly placing at rotor core's circumference, place spoke permanent magnet 6 between adjacent V-arrangement permanent magnet, wherein, V-arrangement opening direction is towards the air gap. The excitation direction of the V-shaped permanent magnet is vertical to the surface of the V-shaped permanent magnet and is upward or downward, and the excitation direction of the V-shaped permanent magnet adjacent to the V-shaped permanent magnet is opposite, namely: the spoke-shaped permanent magnet is vertical to the surface of the V-shaped permanent magnet, faces downwards or upwards and is positioned on the left side of the V-shaped permanent magnet with the upward excitation direction, and the excitation direction of the spoke-shaped permanent magnet is clockwise; the spoke-shaped permanent magnet is positioned on the left side of the V-shaped permanent magnet with the downward excitation direction, and the excitation direction is anticlockwise. Namely, the excitation directions of the adjacent V-shaped permanent magnets are opposite and are sequentially upward or downward; the excitation directions of the adjacent spoke-shaped permanent magnets are opposite and are sequentially clockwise or anticlockwise, the magnetic fields generated by the V-shaped permanent magnets and the spoke-shaped permanent magnets are in a series relation, the magnetomotive forces of the two permanent magnets are superposed, the main flux is enhanced, and the torque density is improved. The matching relation of the pole slots of the motor meets the following requirements: the total pole pair Pm of the rotor permanent magnet is equal to the number of the V-shaped permanent magnets/2, and the stator tooth number Zs is equal to | the total pole pair Pm of the rotor permanent magnet +/-the pole pair Pa of the winding.
In this embodiment, the armature winding is a concentrated winding or a distributed winding; the armature winding is a single-layer winding or a double-layer winding; according to different application scenes, the stator and the rotor are coaxially sleeved, namely the stator is sleeved outside the rotor, or the stator is sleeved in the rotor; the structure of the motor is a rotary motor structure, a linear motor structure or a cylindrical motor structure; the stator or the rotor is made of solid steel, silicon steel sheets, amorphous ferromagnetic composite materials or SMC soft magnetic composite materials, wherein the V-shaped permanent magnet materials and the spoke-shaped permanent magnet materials can be the same or different; the electric machine is an electric motor or a generator.
To further describe the present invention in detail, the pole slot combination of the rotor permanent magnet total pole pair Pm being 4, the stator tooth number Zs being 6, and the winding pole pair Pa being 2 will be described as an example. As shown in fig. 2(a), in the built-in vernier permanent magnet motor, the permanent magnet magnetomotive force mainly has 4 pairs of poles, because the permanent magnet pole pair number Pm is 4, and the stator tooth number Zs is 6, the air gap ratio flux guide mainly has a direct current term (0 pairs of poles) and 6 pairs of poles, as shown in fig. 2 (b). After the magnetic field modulation effect of the stator teeth, no-load air gap flux density can be obtained, as shown in fig. 2(c), the pole pair number of the air gap flux density mainly comprises: 4-0 | ═ 4 pairs of poles, | 4-6 | ═ 2 pairs of poles. Since the winding pole pair number Pa is 2, the 2 pairs of pole air gap magnetic densities can induce counter-electromotive force in the winding; since the 4 pairs of pole air gap flux densities are tooth harmonics, back-emf can also be induced in the windings. Therefore, the air gap flux densities of the 2 pairs of poles and the 4 pairs of poles are working flux densities. Therefore, the built-in vernier permanent magnet motor provided by the invention has the working characteristic of magnetic field modulation, and the pole-changing acceleration effect of the magnetic field modulation enables the built-in vernier permanent magnet motor to have higher torque density.
The permanent magnet of the rotor is in a built-in V shape and a spoke shape, and the structure ensures that the output torque of the permanent magnet rotor not only comprises a permanent magnet torque component, but also comprises a reluctance torque component. Compared with the traditional vernier permanent magnet motor, the vernier permanent magnet motor only has a permanent magnet torque component, so that the vernier permanent magnet motor has higher torque density.
The salient pole ratio of the traditional vernier permanent magnet motor is 1, and the output torque is maximum when the internal power factor angle is zero, so that the traditional vernier permanent magnet motor only has a permanent magnet torque component and does not have a reluctance torque component. The total pole pair number Pm of the rotor permanent magnet in the embodiment of the invention is 4, the winding pole pair number Pa is 2, and the pole ratio Pm/Pa is more than 1, so that the built-in vernier permanent magnet motor provided by the invention not only has a permanent magnet torque component, but also has a reluctance torque component, and can improve the torque density. Fig. 3(a) shows the output torque of the present invention when the internal power factor angle is zero, and fig. 3(b) shows the average torque of the present invention at different internal power factor angles, and it can be seen that the output torque is the maximum when the internal power factor angle is about 20 degrees, and the output torque includes both permanent magnet torque components and reluctance torque components. Therefore, the built-in vernier permanent magnet motor provided by the invention has higher torque density. Further, fig. 4 shows the no-load magnetic line distribution of the built-in vernier permanent magnet motor provided by the invention, and it can be seen that the magnetic fields generated by the V-shaped permanent magnet and the spoke-shaped permanent magnet are in a series relationship, and the magnetomotive forces of the two permanent magnets are superposed, so that the main flux is enhanced, and the torque density is further improved.
Fig. 5 is a schematic diagram of a conventional interior permanent magnet motor, fig. 6(a) compares the line back emf waveforms of the interior vernier permanent magnet motor provided by the present invention and the conventional interior permanent magnet motor, and fig. 6(b) compares the line back emf harmonic amplitudes, and it can be seen that the line back emf harmonic of the present invention is smaller, resulting in smaller torque ripple. Fig. 7 compares the cogging torque of the interior vernier permanent magnet motor of the present invention with that of the conventional interior permanent magnet motor, and it can be seen that the cogging torque of the present invention is smaller. Fig. 8 compares the rated torque of the interior vernier permanent magnet motor provided by the present invention with that of the conventional interior permanent magnet motor, and it can be seen that the torque fluctuation of the present invention is smaller. In the embodiment of the invention, the pole pair Pa of the stator winding is not equal to the total pole pair Pm of the rotor permanent magnet, so that harmonic sequences of a stator magnetic field and a rotor magnetic field are staggered with each other, most higher harmonics can not be coupled with each other, the traditional built-in permanent magnet motor has no magnetic field modulation effect, the stator magnetic field and the rotor magnetic field harmonic sequences are not staggered with each other, so that the coupling effect is stronger, and the coupling effect of the harmonic magnetic fields can cause cogging torque and torque fluctuation, so that the cogging torque and the torque fluctuation are smaller.
Figure 9 compares the average torque at different current densities for the interior vernier permanent magnet motor provided by the present invention with a conventional interior permanent magnet motor. It can be seen that the present invention has a higher torque density from light load to overload. On one hand, the total pole pair number Pm of the rotor permanent magnet is 4, the winding pole pair number Pa is 2, and the pole ratio Pm/Pa is more than 1, while for the traditional built-in permanent magnet motor, the total pole pair number Pm of the rotor permanent magnet is the winding pole pair number Pa, and the pole ratio Pm/Pa is 1. The higher the pole ratio, the higher the torque density. On the other hand, the V-shaped permanent magnet and the spoke-shaped permanent magnet are in series connection, and magnetomotive force of the two permanent magnets is superposed, so that main flux and torque density are enhanced; and for the traditional built-in permanent magnet motor, only the V-shaped permanent magnet is adopted, the main flux is smaller, and the torque density is smaller.
According to the built-in vernier permanent magnet motor, the rotor permanent magnet is built-in V-shaped and spoke-shaped, so that reluctance torque is brought; in addition, the stator slots are open slots, and the stator teeth play a role in magnetic field modulation, so that the motor has higher torque density; meanwhile, the stator and rotor harmonic sequences are staggered with each other under the action of magnetic field modulation, and lower cogging torque and torque fluctuation are brought.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. An interior vernier permanent magnet motor comprising: the stator and the rotor are coaxially sleeved, and the rotor is characterized by comprising a rotor iron core (3) and a plurality of V-shaped permanent magnets (5) which are uniformly distributed on the circumference of the rotor iron core (3), spoke-shaped permanent magnets (6) are arranged between every two adjacent V-shaped permanent magnets (5), and the excitation directions of the adjacent V-shaped permanent magnets are opposite when the rotor works; the excitation directions of the adjacent spoke-shaped permanent magnets are opposite.
2. The interior vernier permanent magnet motor according to claim 1, wherein the stator comprises a stator core (1) and an armature winding (2), the stator core (1) is an open slot, the armature winding (2) is located in the open slot, and the number of the V-shaped permanent magnets and the number of the stator teeth satisfy the following relationship:
the total pole pair number of the rotor permanent magnets is equal to the number of the V-shaped permanent magnets/2, and the number of the stator teeth is equal to | the total pole pair number of the rotor permanent magnets +/-the pole pair number of the winding |.
3. The interior cursor permanent magnet motor of claim 2, wherein the armature winding is a concentrated winding or a distributed winding.
4. The interior vernier permanent magnet machine of claim 3, wherein the armature winding is a single layer winding or a double layer winding.
5. The interior vernier permanent magnet motor of claim 4, wherein the motor structure is a rotary motor structure, a linear motor structure or a cylindrical motor structure.
6. The interior vernier permanent magnet machine of claim 5, wherein the material of the stator or rotor is solid steel, silicon steel sheet, amorphous ferromagnetic composite or SMC soft magnetic composite.
7. The interior vernier permanent magnet motor of claim 6, wherein the stator is nested outside the rotor or the stator is nested inside the rotor.
8. The interior vernier permanent magnet machine of any one of claims 1 to 7, wherein the machine is an electric motor or a generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111388587.4A CN114123584A (en) | 2021-11-22 | 2021-11-22 | Built-in vernier permanent magnet motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111388587.4A CN114123584A (en) | 2021-11-22 | 2021-11-22 | Built-in vernier permanent magnet motor |
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| CN114123584A true CN114123584A (en) | 2022-03-01 |
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| CN202111388587.4A Pending CN114123584A (en) | 2021-11-22 | 2021-11-22 | Built-in vernier permanent magnet motor |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425626A (en) * | 2017-09-01 | 2017-12-01 | 华中科技大学 | A kind of built-in tangential excitation vernier magneto |
| US20180062461A1 (en) * | 2016-08-30 | 2018-03-01 | Hamilton Sundstrand Corporation | Interior permanent magnet rotor |
| US20190103776A1 (en) * | 2017-09-29 | 2019-04-04 | Wisconsin Alumni Research Foundation | Vernier machine with shaped permanent magnet groups |
-
2021
- 2021-11-22 CN CN202111388587.4A patent/CN114123584A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180062461A1 (en) * | 2016-08-30 | 2018-03-01 | Hamilton Sundstrand Corporation | Interior permanent magnet rotor |
| CN107425626A (en) * | 2017-09-01 | 2017-12-01 | 华中科技大学 | A kind of built-in tangential excitation vernier magneto |
| US20190103776A1 (en) * | 2017-09-29 | 2019-04-04 | Wisconsin Alumni Research Foundation | Vernier machine with shaped permanent magnet groups |
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