CN109067045B - Motor rotor and permanent magnet motor - Google Patents
Motor rotor and permanent magnet motor Download PDFInfo
- Publication number
- CN109067045B CN109067045B CN201811295287.XA CN201811295287A CN109067045B CN 109067045 B CN109067045 B CN 109067045B CN 201811295287 A CN201811295287 A CN 201811295287A CN 109067045 B CN109067045 B CN 109067045B
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- permanent magnet
- permanent magnets
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- permanent
- rotor
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- 230000005389 magnetism Effects 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- 230000005415 magnetization Effects 0.000 description 7
- 230000005347 demagnetization Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- 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
- 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
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention relates to a motor rotor and a permanent magnet motor, comprising: a rotor core; an even number of first permanent magnets are arranged on the axial end face of the rotor core at intervals along the circumferential direction of the rotor core; and the coercive force of the second permanent magnets is larger than that of the first permanent magnets, each second permanent magnet is arranged between every two adjacent pairs of the first permanent magnets at intervals, and each second permanent magnet is arranged in series between the two adjacent first permanent magnets. The magnetic field intensity of the first permanent magnet with low coercivity is changed through magnetizing current, so that the magnetic field of the permanent magnet motor is adjustable, and the efficiency of the permanent magnet motor in both high frequency and low frequency is achieved; simultaneously, when the first permanent magnets are magnetized, the two first permanent magnets without the second permanent magnets in the middle are magnetized, so that the second permanent magnets with high coercive force are avoided, the magnetizing current is reduced, and the magnetizing difficulty is greatly reduced.
Description
Technical Field
The invention relates to the technical field of driving devices, in particular to a motor rotor and a permanent magnet motor.
Background
The permanent magnet motor mainly comprises a stator and a rotor, wherein the rotor comprises a rotor core and permanent magnets, and the permanent magnets are arranged in magnetic steel grooves of the rotor core. When three-phase symmetrical current is introduced into the stator side, the three-phase stator is 120 degrees different in space position, so that the three-phase stator current generates a rotating magnetic field in space, and the rotor moves under the action of electromagnetic force in the rotating magnetic field, and at the moment, electric energy is converted into kinetic energy; when the permanent magnet generates a rotating magnetic field, the three-phase stator windings react through the armature under the action of the rotating magnetic field to induce three-phase symmetrical current, and at the moment, the kinetic energy of the rotor is converted into electric energy.
The traditional permanent magnet motor is characterized in that the magnetic field provided by the permanent magnet is fixed, so that the magnetic field inside the permanent magnet motor is difficult to adjust, the efficiency of the permanent magnet motor at high frequency and low frequency is difficult to be considered, and the highest operating frequency of the permanent magnet motor is limited under the condition of fixed power supply voltage.
Disclosure of Invention
Based on this, it is necessary to provide a motor rotor and a permanent magnet motor capable of achieving both high-frequency and low-frequency efficiency, in order to solve the problem that it is difficult to achieve both high-frequency and low-frequency efficiency in the conventional permanent magnet motor.
An electric machine rotor, the electric machine rotor comprising:
A rotor core;
An even number of first permanent magnets are arranged on the axial end face of the rotor core at intervals along the circumferential direction of the rotor core; and
The coercive force of the second permanent magnets is larger than that of the first permanent magnets, each second permanent magnet is arranged between every two adjacent pairs of the first permanent magnets at intervals, and each second permanent magnet is arranged in series between the two adjacent first permanent magnets.
In one embodiment, the even number of first permanent magnets are uniformly arranged at intervals along the circumferential direction of the rotor core, an included angle facing the center of the rotor core is formed between every two adjacent first permanent magnets, and the second permanent magnets are arranged in the included angle.
In one embodiment, the center of the pattern formed by the even number of first permanent magnet connecting lines coincides with the center of the rotor core.
In one embodiment, two first permanent magnets adjacent to each second permanent magnet are symmetrically arranged with respect to the second permanent magnet.
In one embodiment, the cross section of the first permanent magnet and the cross section of the second permanent magnet are rectangular.
In one embodiment, the dimensions of the first permanent magnet and the second permanent magnet satisfy the relationship 0.6×l1×br1 < l2×br2 < 1.1×l1×br1,0.5×d1 < d2 < 0.8×d1;
wherein L1, d1 and Br1 are respectively the length, width and remanence of the first permanent magnet;
l2, d2 and Br2 are the length, width and remanence of the second permanent magnet respectively.
In one embodiment, the cross section of the first permanent magnet is in the shape of a circular arc with an opening facing the center of the rotor core, and the cross section of the second permanent magnet is in the shape of a rectangle.
In one embodiment, a magnetic circuit is formed by partial magnetic line communication between every two adjacent second permanent magnets along the circumferential direction of the rotor core.
In one embodiment, the rotor core is provided with magnetism isolating grooves located at both ends of the first permanent magnet in the circumferential direction of the rotor core.
A permanent magnet motor comprising a stator and a motor rotor according to any one of the preceding claims, the motor rotor being rotatably journalled in the stator.
According to the motor rotor and the permanent magnet motor, each second permanent magnet is arranged between every two adjacent pairs of first permanent magnets at intervals, the magnetic field intensity of the first permanent magnet with low coercivity is changed through magnetizing current on the premise that the magnetic field intensity of the second permanent magnet with high coercivity is kept unchanged, and the magnetic field of the permanent magnet motor is adjustable, so that the efficiency of the permanent magnet motor in high frequency and low frequency is achieved; the second permanent magnets are arranged in series between the two adjacent first permanent magnets, so that the demagnetizing resistance of the first permanent magnets with low coercive force can be improved; meanwhile, as the permanent magnet motor of the invention magnetizes the first permanent magnet, the two first permanent magnets without the second permanent magnet in the middle are directly magnetized, so that the second permanent magnet with high coercivity is avoided, the magnetizing current is reduced, and the magnetizing difficulty is greatly reduced.
Drawings
Fig. 1 is a block diagram of a permanent magnet motor according to an embodiment of the present invention;
fig. 2 is a block diagram of a motor rotor of the permanent magnet motor provided in fig. 1;
fig. 3 is a schematic diagram of the magnetization of the first permanent magnet of the motor rotor provided in fig. 2.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-3, an embodiment of the present invention provides a permanent magnet motor 100, which includes a stator 10 and a motor rotor 20, wherein the motor rotor 20 is coaxially sleeved in the stator 10, and an air gap is provided between the motor rotor 20 and the stator 10 to facilitate rotation of the motor rotor 20 relative to the stator 10.
The stator 10 comprises a stator core 11 and an armature winding, the stator core 11 is formed by punching soft magnetic silicon steel sheets, a plurality of teeth 111 are arranged in the stator core 11 at intervals along the circumferential direction, the armature winding is wound outside each tooth 111, and the armature winding is electrified to generate a rotating magnetic field and acts on the motor rotor 20 to drive the motor rotor 20 to rotate.
The motor rotor 20 includes a rotor core 21 and a permanent magnet, the rotor core 21 is punched from a soft magnetic silicon steel sheet, and the permanent magnet is axially disposed on an axial end face of the rotor core 21. Specifically, the axial end face of the rotor core 21 is provided with a magnetic steel groove, and the permanent magnet is installed in the magnetic steel groove.
The magnetic steel grooves comprise a first magnetic steel groove 211 and a second magnetic steel groove 212, the permanent magnets comprise a first permanent magnet 22 and a second permanent magnet 23, the coercive force of the second permanent magnet 23 is larger than that of the first permanent magnet 22, the first permanent magnet 22 is arranged in the first magnetic steel groove 211, and the second permanent magnet 23 is arranged in the second magnetic steel groove 212.
The number of the first magnetic steel grooves 211 is even, the even number of the first magnetic steel grooves 211 are arranged on the axial end face of the rotor core 21 at intervals along the circumferential direction of the rotor core 21, correspondingly, the number of the first permanent magnets 22 is even, and the first permanent magnets 22 are arranged in the first magnetic steel grooves 211 of the rotor core 21 at intervals along the circumferential direction of the rotor core 21. Each second magnetic steel groove 212 is disposed between every adjacent two pairs of first magnetic steel grooves 211 (every adjacent two first magnetic steel grooves 211 are divided into one pair), correspondingly, each second permanent magnet 23 is disposed between every adjacent two pairs of first permanent magnets 22 (every adjacent two first permanent magnets 22 are divided into one pair), and each second permanent magnet 23 is disposed in series with its adjacent two first permanent magnets 22 (the two first permanent magnets 22 are two first permanent magnets 22 close to each other in the adjacent two pairs of first permanent magnets 22).
The permanent magnet motor 100 provided in this embodiment, the motor rotor 20 includes first permanent magnets 22 and second permanent magnets 23 with different coercive forces, and each second permanent magnet 23 is disposed between every two adjacent pairs of first permanent magnets 22 at intervals. When the permanent magnet motor 100 operates in a low-speed and high-torque state, the first permanent magnet 22 with low coercivity is magnetized and saturated through magnetizing current, so that the magnetic field intensity inside the permanent magnet motor 100 is enhanced to meet the requirement; when the permanent magnet motor 100 operates at a high speed and a small torque, the magnetization degree of the first permanent magnet 22 with a low coercivity is reduced through the magnetization current, so that the magnetic field inside the permanent magnet motor 100 is reduced to meet the requirement, the magnetic field strength of the permanent magnet motor 100 is adjustable, and the permanent magnet motor 100 achieves efficiency when the high frequency and the low frequency are both considered. Meanwhile, each second permanent magnet 23 is arranged in series between two adjacent first permanent magnets 22, and magnetic lines of force of the second permanent magnets 23 run toward as shown in fig. 2, and since the coercive force of the second permanent magnets 23 is greater than that of the first permanent magnets 22, the demagnetization resistance of the first permanent magnets 22 with low coercive force can be improved when the second permanent magnets 23 and the first permanent magnets 22 are arranged in series; meanwhile, due to the permanent magnet motor 100 in the present embodiment, when the first permanent magnet 22 is magnetized (the direction of magnetic lines of force is referred to in fig. 1), the two first permanent magnets 22 without the second permanent magnet 23 in the middle are directly magnetized, so that the second permanent magnet 23 with high coercivity is avoided, the magnetizing current is reduced, and the magnetizing difficulty is greatly reduced.
Further, the even number of first magnetic steel grooves 211 are provided at regular intervals along the circumferential direction of the rotor core 21, and correspondingly, the even number of first permanent magnets 22 are provided at regular intervals along the circumferential direction of the rotor core 21. Specifically, the center of the pattern formed by the lines of the even number of first permanent magnets 22 coincides with the center of the rotor core 21.
In one embodiment, the cross section of the first permanent magnet 22 is rectangular, that is, the first permanent magnet 22 is elongated along the circumference of the rotor core 21, and at this time, the pattern formed by connecting an even number of the first permanent magnets 22 is a regular polygon, and the center of the regular polygon coincides with the center of the rotor core 21. The magnetic pole direction of the first permanent magnet 22 is arranged in the radial direction of the rotor core 21 at this time.
It will be appreciated that, in another embodiment, the cross-sectional shape of the first permanent magnet 22 may be other shapes, for example, the cross-sectional shape of the first permanent magnet 22 is a circular arc shape toward the center of the rotor core 21, that is, the first permanent magnet 22 is a circular arc shape along the circumference of the rotor core 21, where the pattern formed by connecting lines of an even number of the first permanent magnets 22 is a circular shape, and the center of the circular shape coincides with the center of the rotor core 21, which is not limited herein.
In one embodiment, an included angle is formed between every two adjacent first permanent magnets 22 and faces the center of the rotor core 21, and the second permanent magnets 23 are arranged in the included angle, so that the second permanent magnets 23 are located on the inner side of the first permanent magnets 22 in an overall interval.
Two first permanent magnets 22 adjacent to each second permanent magnet 23 are symmetrically disposed with respect to the second permanent magnet 23. As such, the magnetization degree of each first permanent magnet 22 is the same, and thus the torque ripple of the permanent magnet motor 100 is small. Specifically, the cross-sectional shape of the second permanent magnet 23 is rectangular, that is, the second permanent magnet 23 is elongated in the circumferential direction of the rotor core 21. The magnetic pole direction of the second permanent magnet 23 is disposed in the tangential direction of the rotor core 21 at this time.
It should be understood that, in another embodiment, the magnetic pole direction of the first permanent magnet 22 may not be disposed along the radial direction of the rotor core 21, for example, the magnetic pole direction of the first permanent magnet 22 is disposed to be inclined compared with the radial direction of the rotor core 21, but the first permanent magnet 22 is asymmetric, which increases the torque ripple and noise problem; meanwhile, the magnetic pole direction of the second permanent magnet 23 may not be disposed along the tangential direction of the rotor core 21, and if the magnetic pole direction of the second permanent magnet 23 is inclined compared with the tangential direction of the rotor core 21, the magnetic poles of the adjacent two first permanent magnets 22 will be different, and the torque ripple and noise problem will be increased.
In one embodiment, a portion of magnetic flux lines between every adjacent two of the second permanent magnets 23 in the circumferential direction of the rotor core 21 communicate to form a magnetic circuit. Thus, when the magnetization state of the first permanent magnet 22 with low coercivity is weakened, the redundant magnetic field generated by the second permanent magnet 23 with high coercivity can directly reach the magnetic poles of the other second permanent magnets 23 to form a magnetic circuit, and the magnetic circuit has smaller magnetic resistance, so that the influence on the first permanent magnet 22 with low coercivity is smaller, and the magnetic regulating range of the permanent magnet motor 100 is larger.
Since the second permanent magnet 23 has a too large size and cannot play a role in resisting demagnetization of the first permanent magnet 22, the second permanent magnet 23 and the first permanent magnet 22 have a size which affects the demagnetization of the permanent magnet motor 100, so that in order to ensure that the first permanent magnet 22 has a good demagnetization resisting effect and cannot have a too large effect on the demagnetization of the permanent magnet motor 100, the sizes of the second permanent magnet 23 and the first permanent magnet 22 should be selected to satisfy the following relationship: 0.6×l1 < L2×br2 < 1.1×l1×br1,0.5×d1 < d2 < 0.8×d1.
Referring to fig. 3, where L1 is the length of the first permanent magnet 22, d1 is the width of the first permanent magnet 22, br1 is the remanence of the first permanent magnet 22, L2 is the length of the second permanent magnet 23, d2 is the width of the second permanent magnet 23, and Br2 is the remanence of the second permanent magnet 23.
In one embodiment, the axial end surface of the rotor core 21 is provided with the magnetism isolating grooves 213, and the magnetism isolating grooves 213 are located at two ends of the first magnetic steel groove 211 along the circumferential direction of the rotor core 21, that is, the magnetism isolating grooves 213 are located at two ends of the first permanent magnet 22 along the circumferential direction of the rotor core 21, so as to play a certain magnetism isolating role.
An embodiment of the present invention further provides a motor rotor 20 included in the permanent magnet motor 100.
The motor rotor 20 and the permanent magnet motor 100 provided by the embodiment of the invention have the following beneficial effects:
1. the motor rotor 20 comprises a first permanent magnet 22 and a second permanent magnet 23 with different coercive force, the coercive force of the second permanent magnet 23 is larger than that of the first permanent magnet 22, each second permanent magnet 23 is arranged between every two adjacent pairs of first permanent magnets 22 at intervals, the first permanent magnet 22 with low coercive force is magnetized and saturated by changing magnetizing current or the magnetization degree of the first permanent magnet 22 with low coercive force is reduced so as to enable the magnetic field inside the permanent magnet motor 100 to meet the requirement, and thus the magnetic field intensity of the permanent magnet motor 100 is adjustable, and the efficiency of the permanent magnet motor 100 in both high frequency and low frequency is realized;
2. each second permanent magnet 23 with high coercivity is arranged in series between two adjacent first permanent magnets 22 with low coercivity, so that the demagnetization resistance of the first permanent magnets 22 is improved;
3. when the first permanent magnets 22 are magnetized, the two first permanent magnets 22 without the second permanent magnet 23 in the middle are directly magnetized, so that the second permanent magnet 23 with high coercivity is avoided, the magnetizing current is reduced, and the magnetizing difficulty is greatly reduced;
4. The two first permanent magnets 22 adjacent to each second permanent magnet 23 are symmetrically disposed with respect to the second permanent magnet 23 such that the magnetization degree of each first permanent magnet 22 is the same, and thus the torque ripple of the permanent magnet motor 100 is small.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (7)
1. An electric motor rotor (20), characterized in that the electric motor rotor (20) comprises:
A rotor core (21);
An even number of first permanent magnets (22) disposed at intervals along the circumferential direction of the rotor core (21) on the axial end face of the rotor core (21); and
The coercivity of the second permanent magnets (23) is larger than that of the first permanent magnets (22), each second permanent magnet (23) is arranged between every two adjacent pairs of the first permanent magnets (22) at intervals, each second permanent magnet (23) is arranged in series between every two adjacent first permanent magnets (22), and partial magnetic lines of force between every two adjacent second permanent magnets (23) along the circumferential direction of the rotor core (21) are communicated to form a magnetic circuit;
The cross section of the first permanent magnet (22) and the cross section of the second permanent magnet (23) are rectangular;
the dimensions of the first permanent magnet (22) and the second permanent magnet (23) satisfy the relation 0.6 x L1 x Br1 < L2 x Br2 < 1.1 x L1 x d1 < d2 < 0.8 x d1;
Wherein L1, d1 and Br1 are respectively the length, width and remanence of the first permanent magnet (22);
L2, d2, br2 are the length, width and remanence of the second permanent magnet (23), respectively.
2. The motor rotor (20) according to claim 1, wherein the even number of first permanent magnets (22) are arranged at regular intervals along the circumferential direction of the rotor core (21), each adjacent two of the first permanent magnets (22) have an included angle facing the center of the rotor core (21), and the second permanent magnets (23) are arranged within the included angle.
3. The motor rotor (20) according to claim 2, wherein a center of a pattern formed by the lines of the even number of first permanent magnets (22) coincides with a center of the rotor core (21).
4. A motor rotor (20) according to claim 3, characterized in that two of the first permanent magnets (22) adjacent to each of the second permanent magnets (23) are symmetrically arranged compared to the second permanent magnets (23).
5. The electric motor rotor (20) according to any one of claims 2-4, wherein the cross-sectional shape of the first permanent magnet (22) is a circular arc shape opening toward the center of the rotor core (21), and the cross-section of the second permanent magnet (23) is a rectangle.
6. The motor rotor (20) according to claim 1, wherein the axial end face of the rotor core (21) is provided with magnetism isolating grooves (213), and the magnetism isolating grooves (213) are located at both ends of the first permanent magnet (22) in the circumferential direction of the rotor core (21).
7. A permanent magnet motor (100), characterized by comprising a stator (10) and a motor rotor (20) according to any of claims 1-6, said motor rotor (20) being rotatably journalled in said stator (10).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811295287.XA CN109067045B (en) | 2018-11-01 | 2018-11-01 | Motor rotor and permanent magnet motor |
| PCT/CN2019/103972 WO2020088085A1 (en) | 2018-11-01 | 2019-09-02 | Motor rotor and permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811295287.XA CN109067045B (en) | 2018-11-01 | 2018-11-01 | Motor rotor and permanent magnet motor |
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| Publication Number | Publication Date |
|---|---|
| CN109067045A CN109067045A (en) | 2018-12-21 |
| CN109067045B true CN109067045B (en) | 2024-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811295287.XA Active CN109067045B (en) | 2018-11-01 | 2018-11-01 | Motor rotor and permanent magnet motor |
Country Status (2)
| Country | Link |
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| CN (1) | CN109067045B (en) |
| WO (1) | WO2020088085A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067045B (en) * | 2018-11-01 | 2024-05-17 | 珠海格力电器股份有限公司 | Motor rotor and permanent magnet motor |
| CN113964981B (en) * | 2021-11-11 | 2022-10-28 | 东南大学 | Self-leakage variable magnetic flux memory motor with hybrid permanent magnet rotor |
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| JP2006280195A (en) * | 2005-03-01 | 2006-10-12 | Toshiba Corp | Permanent magnet type rotary electric machine |
| CN105990922A (en) * | 2015-01-29 | 2016-10-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and tangential permanent magnet synchronous motor having same |
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| CN108110980A (en) * | 2018-01-31 | 2018-06-01 | 哈尔滨工业大学 | Mid-series type has the adjustable flux electric machine of hybrid permanent magnet of passive adjustable magnetic magnetic barrier |
| CN108599418A (en) * | 2018-05-16 | 2018-09-28 | 华中科技大学 | A kind of rotor core and motor of magnetic circuit tandem type hybrid permanent magnet controllable flux motor |
| CN208955768U (en) * | 2018-11-01 | 2019-06-07 | 珠海格力电器股份有限公司 | Rotor and magneto |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5161612B2 (en) * | 2008-02-22 | 2013-03-13 | 株式会社東芝 | Permanent magnet type rotating electrical machine, method for assembling permanent magnet type rotating electrical machine, and method for disassembling permanent magnet type rotating electrical machine |
| CN203896066U (en) * | 2013-12-25 | 2014-10-22 | 联合汽车电子有限公司 | Mixed magnetic steel rotor and permanent-magnet synchronous motor therewith |
| CN108076676B (en) * | 2016-09-16 | 2019-12-17 | 株式会社东芝 | Rotating electrical machine and vehicle |
| CN109067045B (en) * | 2018-11-01 | 2024-05-17 | 珠海格力电器股份有限公司 | Motor rotor and permanent magnet motor |
-
2018
- 2018-11-01 CN CN201811295287.XA patent/CN109067045B/en active Active
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2019
- 2019-09-02 WO PCT/CN2019/103972 patent/WO2020088085A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006280195A (en) * | 2005-03-01 | 2006-10-12 | Toshiba Corp | Permanent magnet type rotary electric machine |
| CN105990922A (en) * | 2015-01-29 | 2016-10-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and tangential permanent magnet synchronous motor having same |
| CN107925282A (en) * | 2015-07-31 | 2018-04-17 | 日产自动车株式会社 | Permasyn morot |
| CN107994702A (en) * | 2017-12-21 | 2018-05-04 | 珠海格力电器股份有限公司 | Rotor and magneto |
| CN108023421A (en) * | 2017-12-21 | 2018-05-11 | 珠海格力电器股份有限公司 | Rotor and magneto |
| CN108110980A (en) * | 2018-01-31 | 2018-06-01 | 哈尔滨工业大学 | Mid-series type has the adjustable flux electric machine of hybrid permanent magnet of passive adjustable magnetic magnetic barrier |
| CN108599418A (en) * | 2018-05-16 | 2018-09-28 | 华中科技大学 | A kind of rotor core and motor of magnetic circuit tandem type hybrid permanent magnet controllable flux motor |
| CN208955768U (en) * | 2018-11-01 | 2019-06-07 | 珠海格力电器股份有限公司 | Rotor and magneto |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020088085A1 (en) | 2020-05-07 |
| CN109067045A (en) | 2018-12-21 |
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