CN108880039A - Combined surface insertion type permanent magnet motor and alternating pole permanent magnet motor - Google Patents
Combined surface insertion type permanent magnet motor and alternating pole permanent magnet motor Download PDFInfo
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- CN108880039A CN108880039A CN201810920609.9A CN201810920609A CN108880039A CN 108880039 A CN108880039 A CN 108880039A CN 201810920609 A CN201810920609 A CN 201810920609A CN 108880039 A CN108880039 A CN 108880039A
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- permanent magnet
- magnet motor
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- permanent magnetism
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- 230000037431 insertion Effects 0.000 title abstract 4
- 238000003780 insertion Methods 0.000 title abstract 4
- 239000000463 material Substances 0.000 claims abstract description 32
- 230000004907 flux Effects 0.000 claims abstract description 17
- 230000005389 magnetism Effects 0.000 claims description 62
- 230000005415 magnetization Effects 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 210000003781 tooth socket Anatomy 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 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
- H02K1/278—Surface mounted magnets; Inset magnets
-
- 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
- H02K1/2786—Outer rotors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a combined surface insertion type permanent magnet motor and an alternating pole permanent magnet motor, wherein a rotor of the combined surface insertion type permanent magnet motor comprises a rotor core and permanent magnets, each pole of permanent magnet comprises two sections of permanent magnets which are made of the same/different materials, have the same/different volumes and the same/different magnetizing angles, the permanent magnets are magnetized in parallel, and the pole arc coefficient is less than or equal to 1. The rotor of the combined surface insertion type alternate pole permanent magnet motor comprises a rotor core and permanent magnets, each pole of permanent magnet comprises two sections of permanent magnets which are made of the same/different materials, have the same/different volumes and the same/different magnetizing angles, the permanent magnets are magnetized in parallel, and the pole arc coefficient is smaller than or equal to 1. Compared with the conventional motor, the radial air gap flux density waveform of the motor has small harmonic content and better sine degree on the premise that the permanent magnetic volume and the average remanence per unit volume are equal, so that the electromagnetic performance of the motor is improved.
Description
Technical field
The invention belongs to magneto technical fields, and in particular to a kind of aggregate surface plug-in permanent magnet motor and alternately pole
Magneto.
Background technique
Magneto has many advantages, such as that small in size, light-weight, high-efficient, power factor is high and power density is high, extensively
It applies in various fields.But the direction of magnetization of magneto usually only radial direction and two kinds of parallel magnetization, add tooth socket
It influences, so that air gap magnetic density waveform contains many harmonic components.
Although ideal Halbach Air-gap Flux Density in Permanent Magnet Machines is close to sine wave, permanent magnetism number of segment is too many, real in engineering
It is now more difficult.In fact, only two sections and three sections of Halbach magnetoes have obtained engineer application.
Chinese patent 201711077852.0 discloses a kind of two-part Halbach Permanent Magnet and Electric with optimal angle of magnetization
Machine, the rotor structure of the motor are two-part Halbach arrays.Output torque and power density can be improved in the motor.But
It is the motor is surface-mount type structure, and two sections of permanent magnetism are identical material and same volume, angle of magnetizing is equal.
Magneto can be divided into several structures such as surface-mount type, surface plug-in type and flush type, each there is its advantage and disadvantage,
Applicable situation is also different.The present invention relates to surface plug-in permanent magnet motors.
Summary of the invention
It is an object of the invention to：In order to improve the electromagnetic performance of existing surface plug-in permanent magnet motor, the present invention is provided
Aggregate surface plug-in permanent magnet motor and Consequent pole permanent magnet motor.
The technical solution adopted by the present invention is as follows：
A kind of aggregate surface plug-in permanent magnet motor, including stator and rotor, every pole permanent magnetism of rotor include identical/different
Two sections of permanent magnetism of material, identical/different volumes, parallel magnetization, pole embrace are less than or equal to 1；The pole N first segment permanent magnetism magnetizes
Angle θ1For the angle of magnetizing direction and circumference tangential direction clockwise；The angle θ that magnetizes of the pole N second segment permanent magnetism2For magnetizing direction with it is inverse
The angle of hour hands circumference tangential direction；The angle θ that magnetizes of the pole S first segment permanent magnetism1For magnetizing direction and counterclockwise circular tangential direction
Angle；The angle θ that magnetizes of the pole S second segment permanent magnetism2For the angle of magnetizing direction and circumference tangential direction clockwise；For identical material
Two sections of permanent magnetism of material and same volume, θ1With θ2It is equal；For two sections of permanent magnetism of different materials or different volumes, θ1With θ2Not phase
Deng.
The aggregate surface plug-in permanent magnet motor, by the θ for calculating available optimization1With θ2, so that magneto
Radial air gap magnetic flux density waveforms closer to sine wave, harmonic content is small, to improve the electromagnetic performance of motor.
The aggregate surface plug-in permanent magnet motor is suitable for internal rotor permanent-magnetic motor and outer-rotor permanent magnet motor.
The pole the N permanent magnetism of a kind of aggregate surface plug-in type Consequent pole permanent magnet motor, including stator and rotor, rotor includes phase
With two sections of permanent magnetism of/different materials, identical/different volumes, parallel magnetization, pole embrace is less than or equal to the pole 1, S by rotor iron
The heart is constituted；The angle θ that magnetizes of the pole N first segment permanent magnetism1For the angle of magnetizing direction and circumference tangential direction clockwise；The pole N second segment
The angle θ that magnetizes of permanent magnetism2For the angle of magnetizing direction and counterclockwise circular tangential direction；For identical material and same volume two
Section permanent magnetism, θ1With θ2It is equal；For two sections of permanent magnetism of different materials or different volumes, θ1With θ2It is unequal.
The aggregate surface plug-in type Consequent pole permanent magnet motor, by the θ for calculating available optimization1With θ2, so that forever
For the radial air gap magnetic flux density waveforms of magneto closer to sine wave, harmonic content is small, to improve the electromagnetic performance of motor.
The aggregate surface plug-in type Consequent pole permanent magnet motor is suitable for internal rotor permanent-magnetic motor and external rotor permanent magnet electricity
Machine.
The pole the S permanent magnetism of a kind of aggregate surface plug-in type Consequent pole permanent magnet motor, including stator and rotor, rotor includes phase
With two sections of permanent magnetism of/different materials, identical/different volumes, parallel magnetization, pole embrace is less than or equal to the pole 1, N by rotor iron
The heart is constituted；The angle θ that magnetizes of the pole S first segment permanent magnetism1For the angle of magnetizing direction and counterclockwise circular tangential direction；The pole S second segment
The angle θ that magnetizes of permanent magnetism2For the angle of magnetizing direction and circumference tangential direction clockwise；For identical material and same volume two
Section permanent magnetism, θ1With θ2It is equal；For two sections of permanent magnetism of different materials or different volumes, θ1With θ2It is unequal.
The aggregate surface plug-in type Consequent pole permanent magnet motor, by the θ for calculating available optimization1With θ2, so that forever
For the radial air gap magnetic flux density waveforms of magneto closer to sine wave, harmonic content is small, to improve the electromagnetic performance of motor.
The aggregate surface plug-in type Consequent pole permanent magnet motor is suitable for internal rotor permanent-magnetic motor and external rotor permanent magnet electricity
Machine.
Permanent magnetism volume and unit volume be averaged remanent magnetism it is all equal under the premise of, with the existing conventional table of identical structural parameters
Face plug-in permanent magnet motor is compared, the beneficial effects of the present invention are：The radial air gap magnetic flux density waveforms harmonic wave of motor of the present invention contains
Measure small, sine degree is more preferable, and counter potential waveform sine degree is also more preferable, and electromagnetic torque fluctuation is smaller, to improve the electromagnetism of motor
Performance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of conventional surface plug-in permanent magnet motor.
Fig. 2 is a kind of structural schematic diagram of aggregate surface plug-in permanent magnet motor of the present invention.
Fig. 3 and Fig. 4 is the structural schematic diagram of conventional surface plug-in type Consequent pole permanent magnet motor.
Fig. 5 is a kind of structural schematic diagram of aggregate surface plug-in type Consequent pole permanent magnet motor of the present invention.
Fig. 6 is a kind of structural schematic diagram of aggregate surface plug-in type Consequent pole permanent magnet motor of the present invention.
Fig. 7 is a kind of radial gas of aggregate surface plug-in permanent magnet motor and conventional surface plug-in permanent magnet motor of the present invention
Gap magnetic flux density waveforms comparison diagram.
Specific embodiment
With reference to the accompanying drawing and specific embodiment further illustrates the present invention.
A kind of aggregate surface plug-in permanent magnet motor, including stator and rotor.Rotor includes axis 1, rotor core 2 and forever
Magnetic.Rotor core is salient-pole structure, and outer diameter is identical as permanent magnetism outer diameter, to constitute surface plug in construction.Every pole permanent magnetism includes
The permanent magnetism of two sections of identical/different materials, identical/different volumes, parallel magnetization, pole embrace are less than or equal to 1.The pole N first segment
The angle θ that magnetizes of permanent magnetism 3,71For the angle of magnetizing direction and circumference tangential direction clockwise；The pole N second segment permanent magnetism 4,8 magnetizes
Angle θ2For the angle of magnetizing direction and counterclockwise circular tangential direction；The angle θ that magnetizes of the pole S first segment permanent magnetism 5,91For magnetizing direction
With the angle of counterclockwise circular tangential direction；The angle θ that magnetizes of the pole S second segment permanent magnetism 6,102For magnetizing direction and circumference clockwise
The angle of tangential direction.For two sections of permanent magnetism of identical material and same volume, θ1With θ2It is equal；For for different materials or
Two sections of permanent magnetism of different volumes, θ1With θ2It is unequal.
A kind of aggregate surface plug-in type Consequent pole permanent magnet motor, including stator and rotor.Rotor includes axis 1, rotor core 2
With the pole N permanent magnetism.The pole N permanent magnetism includes two sections of permanent magnetism of identical/different materials, identical/different volumes, parallel magnetization, pole embrace
It is made of less than or equal to the pole 1, S rotor core.The angle θ that magnetizes of the pole N first segment permanent magnetism 3,71For magnetizing direction and clockwise circle
The angle of all tangential directions；The angle θ that magnetizes of the pole N second segment permanent magnetism 4,82For the folder of magnetizing direction and counterclockwise circular tangential direction
Angle.For two sections of permanent magnetism of identical material and same volume, θ1With θ2It is equal；For two for different materials or different volumes
Section permanent magnetism, θ1With θ2It is unequal.
A kind of aggregate surface plug-in type Consequent pole permanent magnet motor, including stator and rotor.Rotor includes axis 1, rotor core 2
With the pole S permanent magnetism.The pole S permanent magnetism includes two sections of permanent magnetism of identical/different materials, identical/different volumes, parallel magnetization, pole embrace
It is made of less than or equal to the pole 1, N rotor core.The angle θ that magnetizes of the pole S first segment permanent magnetism 5,91It is for magnetizing direction and round counterclockwise
The angle of all tangential directions；The angle θ that magnetizes of the pole S second segment permanent magnetism 6,102For magnetizing direction and circumference tangential direction clockwise
Angle.For two sections of permanent magnetism of identical material and same volume, θ1With θ2It is equal；For for different materials or different volumes
Two sections of permanent magnetism, θ1With θ2It is unequal.
The advantages of in order to illustrate motor of the present invention, ignore tooth socket effect, Fig. 7 gives example magneto and Conventional permanent magnet
The simulation waveform of the unloaded radial air gap flux density of motor.The motor is 6 slot, 4 pole structure, and diameter of stator bore and outer diameter are respectively 40mm
And 80mm, rotor diameter 39.4mm, for permanent magnetism with a thickness of 3mm, permanent magnetism is all ferrite, and relative permeability is all 1.05, but two
The section permanent magnetism trade mark is not identical, i.e., two sections of permanent-magnet materials are not identical, and remanent magnetism is respectively 0.38T and 0.42T, first segment permanent magnetism and second
The volume ratio of section permanent magnetism is 8：7.Permanent magnetism pole embrace is 0.667.By calculating, as the angle θ that magnetizes1With θ271 ° and 66 ° respectively, gas
Gap magnetic flux density waveforms sine degree is preferable.In order to be compared with conventional surface plug-in permanent magnet motor, compare on condition that structural parameters
Identical, permanent magnetism volume is identical, and the unit volume remanent magnetism that is averaged is also equal.Conventional surface plug-in permanent magnet motor permanent magnetism pole embrace
It also is 0.667, permanent magnetism remanent magnetism is 0.4T.The calculated result of motor gas-gap magnetic flux density waveforms is listed in Table 1 below in Fig. 7.It is not difficult to find out that such as
Fruit ignores tooth socket effect, compared with conventional surface plug-in permanent magnet motor, the air gap magnetic of plug-in permanent magnet motor in surface of the present invention
Not only fundamental voltage amplitude slightly improves condensation wave shape, but also sine degree is more preferable.
The unloaded radial air gap flux density of table 1 compares
| Air gap flux density fundamental voltage amplitude/T | Air gap flux density THD | |
| Conventional surface plug-in type | 0.3712 | 28.83% |
| Surface plug-in type of the present invention | 0.3722 | 23.61% |
In addition, if tooth socket effect is considered, using Carter's coefficient it is found that the radial air gap flux density sine degree of motor of the present invention
Equally it is better than conventional motor.It was therefore concluded that the electromagnetic performance of motor of the present invention is preferable.
Claims (9)
1. a kind of aggregate surface plug-in permanent magnet motor, including stator and rotor, it is characterised in that：Every pole permanent magnetism of rotor includes
Two sections of permanent magnetism of identical/different materials, identical/different volumes, parallel magnetization, pole embrace are less than or equal to 1；The pole N first segment
The angle θ that magnetizes of permanent magnetism1For the angle of magnetizing direction and circumference tangential direction clockwise；The angle θ that magnetizes of the pole N second segment permanent magnetism2To fill
The angle of magnetic direction and counterclockwise circular tangential direction；The angle θ that magnetizes of the pole S first segment permanent magnetism1It is for magnetizing direction and round counterclockwise
The angle of all tangential directions；The angle θ that magnetizes of the pole S second segment permanent magnetism2For the angle of magnetizing direction and circumference tangential direction clockwise；
For two sections of permanent magnetism of identical material and same volume, θ1With θ2It is equal；For two sections of permanent magnetism of different materials or different volumes,
θ1With θ2It is unequal.
2. aggregate surface plug-in permanent magnet motor according to claim 1, it is characterised in that：It is available excellent by calculating
The θ of change1With θ2, so that the radial air gap magnetic flux density waveforms of magneto are closer to sine wave, harmonic content is small, to improve electricity
The electromagnetic performance of machine.
3. aggregate surface plug-in permanent magnet motor according to claim 1 or 2, it is characterised in that：Forever suitable for internal rotor
Magneto and outer-rotor permanent magnet motor.
4. a kind of aggregate surface plug-in type Consequent pole permanent magnet motor, including stator and rotor, it is characterised in that：The pole N of rotor is forever
Disk pack includes two sections of permanent magnetism of identical/different materials, identical/different volumes, parallel magnetization, and pole embrace is less than or equal to the pole 1, S
It is made of rotor core；The angle θ that magnetizes of the pole N first segment permanent magnetism1For the angle of magnetizing direction and circumference tangential direction clockwise；N
The angle θ that magnetizes of pole second segment permanent magnetism2For the angle of magnetizing direction and counterclockwise circular tangential direction；For identical material and identical
Two sections of permanent magnetism of volume, θ1With θ2It is equal；For two sections of permanent magnetism of different materials or different volumes, θ1With θ2It is unequal.
5. aggregate surface plug-in type Consequent pole permanent magnet motor according to claim 4, it is characterised in that：It can be with by calculating
The θ optimized1With θ2, so that the radial air gap magnetic flux density waveforms of magneto are closer to sine wave, harmonic content is small, to mention
The high electromagnetic performance of motor.
6. aggregate surface plug-in type Consequent pole permanent magnet motor according to claim 4 or 5, it is characterised in that：Suitable for interior
Rotor permanent magnet motor and outer-rotor permanent magnet motor.
7. a kind of aggregate surface plug-in type Consequent pole permanent magnet motor, including stator and rotor, it is characterised in that：The pole S of rotor is forever
Disk pack includes two sections of permanent magnetism of identical/different materials, identical/different volumes, parallel magnetization, and pole embrace is less than or equal to the pole 1, N
It is made of rotor core；The angle θ that magnetizes of the pole S first segment permanent magnetism1For the angle of magnetizing direction and counterclockwise circular tangential direction；S
The angle θ that magnetizes of pole second segment permanent magnetism2For the angle of magnetizing direction and circumference tangential direction clockwise；For identical material and identical
Two sections of permanent magnetism of volume, θ1With θ2It is equal；For two sections of permanent magnetism of different materials or different volumes, θ1With θ2It is unequal.
8. aggregate surface plug-in type Consequent pole permanent magnet motor according to claim 7, it is characterised in that：It can be with by calculating
The θ optimized1With θ2, so that the radial air gap magnetic flux density waveforms of magneto are closer to sine wave, harmonic content is small, to mention
The high electromagnetic performance of motor.
9. aggregate surface plug-in type Consequent pole permanent magnet motor according to claim 7 or 8, it is characterised in that：Suitable for interior
Rotor permanent magnet motor and outer-rotor permanent magnet motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810920609.9A CN108880039A (en) | 2018-08-14 | 2018-08-14 | Combined surface insertion type permanent magnet motor and alternating pole permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810920609.9A CN108880039A (en) | 2018-08-14 | 2018-08-14 | Combined surface insertion type permanent magnet motor and alternating pole permanent magnet motor |
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| CN108880039A true CN108880039A (en) | 2018-11-23 |
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| CN201810920609.9A Pending CN108880039A (en) | 2018-08-14 | 2018-08-14 | Combined surface insertion type permanent magnet motor and alternating pole permanent magnet motor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350692A (en) * | 2019-08-02 | 2019-10-18 | 艾德斯汽车电机无锡有限公司 | A kind of HALBACH array rotor |
| CN110556979A (en) * | 2019-09-05 | 2019-12-10 | 合肥工业大学 | Method for optimizing split ratio and magnetization angle of Halbach array permanent magnet motor |
| CN112531941A (en) * | 2020-12-25 | 2021-03-19 | 合肥工业大学 | Method for optimizing Halbach array surface plug-in permanent magnet motor |
| CN113691045A (en) * | 2021-07-14 | 2021-11-23 | 合肥工业大学 | Semi-analytic optimization method for surface-inserted permanent magnet motor with convex iron and harmonic injection magnetic shape |
| CN113726033A (en) * | 2021-09-07 | 2021-11-30 | 浙江大学先进电气装备创新中心 | Method for designing robustness of magnetic pole structure of low-torque-fluctuation continuous pole permanent magnet synchronous motor |
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| JP5080010B2 (en) * | 2006-02-16 | 2012-11-21 | アスモ株式会社 | Rotor and motor |
| WO2015082528A3 (en) * | 2013-12-06 | 2016-05-26 | Siemens Aktiengesellschaft | Rotor for an electric machine |
| CN107634631A (en) * | 2017-11-06 | 2018-01-26 | 合肥工业大学 | A kind of two-part Halbach magnetoes with optimal angle of magnetization |
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2018
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5080010B2 (en) * | 2006-02-16 | 2012-11-21 | アスモ株式会社 | Rotor and motor |
| WO2015082528A3 (en) * | 2013-12-06 | 2016-05-26 | Siemens Aktiengesellschaft | Rotor for an electric machine |
| CN107634631A (en) * | 2017-11-06 | 2018-01-26 | 合肥工业大学 | A kind of two-part Halbach magnetoes with optimal angle of magnetization |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350692A (en) * | 2019-08-02 | 2019-10-18 | 艾德斯汽车电机无锡有限公司 | A kind of HALBACH array rotor |
| CN110556979A (en) * | 2019-09-05 | 2019-12-10 | 合肥工业大学 | Method for optimizing split ratio and magnetization angle of Halbach array permanent magnet motor |
| CN112531941A (en) * | 2020-12-25 | 2021-03-19 | 合肥工业大学 | Method for optimizing Halbach array surface plug-in permanent magnet motor |
| CN112531941B (en) * | 2020-12-25 | 2022-01-25 | 合肥工业大学 | Method for optimizing Halbach array surface plug-in permanent magnet motor |
| CN113691045A (en) * | 2021-07-14 | 2021-11-23 | 合肥工业大学 | Semi-analytic optimization method for surface-inserted permanent magnet motor with convex iron and harmonic injection magnetic shape |
| CN113726033A (en) * | 2021-09-07 | 2021-11-30 | 浙江大学先进电气装备创新中心 | Method for designing robustness of magnetic pole structure of low-torque-fluctuation continuous pole permanent magnet synchronous motor |
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