CN105762999B - A kind of p-m rotor low harmony wave magnetization method and device - Google Patents
A kind of p-m rotor low harmony wave magnetization method and device Download PDFInfo
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- CN105762999B CN105762999B CN201610264517.0A CN201610264517A CN105762999B CN 105762999 B CN105762999 B CN 105762999B CN 201610264517 A CN201610264517 A CN 201610264517A CN 105762999 B CN105762999 B CN 105762999B
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- magnetic
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- magnetic pole
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
- H01F13/003—Methods and devices for magnetising permanent magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A kind of p-m rotor low harmony wave magnetization method and device, its main feature is that by setting multiple modulation system magnetize poles, so that entire magnetic pole surface is divided into multiple dentation magnetic poles, low harmony wave proportionate relationship is distributed between the shared central angle of each magnetic pole and the magnetic potential that magnetizes, to realize a kind of p-m rotor magnetic pole of modulation；Low harmony wave p-m rotor magnetizer is prepared using modulation system magnetize pole, magnetizing coil and the electric current that magnetizes, magnetic pole is made to apply modulation system magnetic fields to permanent magnetic powder in p-m rotor forming process so that control arrangement occurs for magnetic domain inside magnetic powder material in p-m rotor；The air-gap field waveform generated when being packed into motor after p-m rotor shaping is more nearly sine wave, the present invention overcomes the shortcomings of that air-gap field non-sinusoidal waveform is distributed in existing p-m rotor magnetization method, the effect of harmonic field can be reduced, beneficial to improving the performance of magneto, vibration and the noise of magneto are reduced, improves magneto operation stability and reliability.
Description
Technical field
The present invention relates to a kind of permanent magnet magnetization method and device, more particularly to a kind of realization magneto air-gap field is low
The p-m rotor low harmony wave magnetization method and device of harmonic wave distribution, belong to permanent magnet machine rotor technical field.
Background technology
At present, for magneto with the various features such as its lightness, high performance, energy-efficient, application is increasingly extensive；Together
When, also increasingly pay close attention to magneto vibrate and noise in terms of there are the problem of, and the air-gap field that p-m rotor is established is special
Sign is to influence the key factor of magneto vibration and noise.
Traditional magnetization method and device are all in a manner that single magnetized head configures single magnetizing coil so that permanent magnetism
The air-gap field that rotor is established in motor is mostly non-sinusoidal waveform, present in harmonic content it is higher so that electric
The copper loss of motivation, iron loss, miscellaneous consumption increase, and efficiency declines, temperature rise, and many advantages of magneto is caused to be difficult to be presented as market
Advantage.In addition, non-low harmony wave magnetic field can also generate pulsating electromagnetic torque and cause speed oscillation, operation stability, reliable is influenced
Property and service life, directly affect using and promoting for magneto.Therefore, how so that p-m rotor generates air-gap field ripple
The harmonic wave of shape is lower, has become the key core technical bottleneck for restricting and promoting magneto performance.
Publication No. is a kind of application for a patent for invention " p-m rotor sine magnetization method and device " (Shen of CN104319060A
Please number：2014104726101) a kind of p-m rotor sine magnetization method and device, two magnetic poles and p-m rotor are disclosed
Contact surface be divided into 2m and have a common boundary symmetrical arc segment on magnetic pole geometric center lines i.e. NS poles, each magnetic pole
On arc segment width and interval respectively into sinusoidal proportionate relationship, the magnetic pole is in p-m rotor forming process to permanent-magnet magnetic
Powder applies magnetic fields so that control arrangement occurs for permanent magnetic powder material internal magnetic, so that after p-m rotor shaping
It is packed into the air-gap field waveform generated during motor and is more nearly sine wave, that is, reduce the harmonic content of air-gap field, be a kind of
Modified magnetization method and device.
But each modulated in this method and apparatus segmented magnetic pole by the ampere-turn that magnetizes be identical, be subject to
The influence of magnetic nonlinearity factor, may only by regulating and controlling each magnetic pole arc segment width and being partitioned into sinusoidal proportionate relationship
In the presence of the deficiency for influencing patented technology effect.
The content of the invention
The purpose of the present invention is that for above-mentioned technical problem existing in the prior art, and it is low humorous to provide a kind of p-m rotor
Ripple magnetization method and device, to overcome the Gas-gap Magnetic Field Resonance Wave content that p-m rotor generates in existing p-m rotor magnetization method high
Deficiency so that the harmonic content of air gap magnetic generated when being packed into motor after p-m rotor shaping is filled with traditional and modified
Magnetism method is compared lower with device.
The technical solution that the present invention provides is：
A kind of p-m rotor low harmony wave magnetization method, its main feature is that, the magnetized head of each magnetic polarity is by m equal central angles
Dentation magnetic pole form, magnetizing coil and electric current generation of magnetizing in position angle shared by each magnetic pole cooperation magnetic pole
Into low harmony wave modulation ratio relation, which applies magnetic field to permanent magnetic powder in p-m rotor forming process and makees the magnetic potential that magnetizes
With so that control arrangement occurs for permanent magnetic powder material internal magnetic, so that being generated when being packed into motor after p-m rotor shaping
The harmonic content of air-gap field is lower.
A kind of device using the p-m rotor low harmony wave magnetization method is mainly made of iron core and magnetizing coil,
The magnetized head of each polarity by the magnetizing coil in m magnetic pole, each magnetic pole and is coated on magnetic pole periphery on iron core
Yoke form；The electric current of the number of turn and lead-out wire the mating pulse power of each magnetizing coil is different, thus
The different magnetic potentials that magnetizes is generated, the p-m rotor to be placed under the cartridge that magnetizes magnetizes；An its main feature is that magnetic polarity
The center of circle angle that each magnetic pole is occupied in lower m magnetic pole is β=π/m electrical radians, and the position angle where k-th of magnetic pole is
K π/m electrical radians, the magnetizing coil number of turn are Wk, mating the electric current that magnetizes for Ik, the magnetic potential that magnetizes of generation is Fk=WkIk；K-th of He
It is F to meet low harmony wave modulation relation between the magnetic potential that magnetizes that+1 magnetic pole of kth generatesk+1/Fk=Wk+1Ik+1/WkIk=sin [(k
+ 1) π/m]/sin (k π/m), wherein, k=1,2,3 ..., m-1；The W of another magnetic polarity1=W2=...=WmA magnetic pole
It is symmetrical arranged with above-mentioned magnetic polarity magnetic pole on magnetic polarity geometric center lines.
Further, each magnetizing coil number of turn can be configured to relation of equality, i.e. W1=W2=...=Wm, in this way, magnetizing
The electric current that magnetizes of coil is configured to low harmony wave relation as Ik+1/Ik=sin [(k+1) π/m]/sin (k π/m), k=1,2,3 ...,
m-1。
Further, the electric current that magnetizes of each magnetizing coil can be configured to relation of equality, i.e. I1=I2=...=Im, so
The magnetizing coil number of turn is configured to low harmony wave relation as Wk+1/Wk=sin [(k+1) π/m]/sin (k π/m), k=1,2,3 ..., m-
1。
Further, in order to be arranged beneficial to the control of permanent magnetic powder material internal magnetic, the axial length and permanent magnetism of iron core
The axial length of rotor is equal, it is each magnetize extremely be put into magnetizing coil setting notch should be as small as possible.Beneficial, using magnetic
Property material fills up this notch.
Further, the iron core of magnetizer is made of the high soft magnetic materials of magnetic permeability, to optimize the effect that magnetizes.Magnetizing coil
Benefit carries out dipping lacquer after being nested in dentation magnetic pole and insulation processing is done in drying using enamel insulated wire coiling.
Compared with prior art, the beneficial effects of the invention are as follows：The magnetization method and device are in p-m rotor forming process
In modulation system applied to permanent magnetic powder magnetize magnetic fields so that regulation and control sexual orientation and strong occurs for permanent magnetic powder material internal magnetic
Compared with traditional and modified magnetization method and device, air gap magnetic is generated when motor is packed into after p-m rotor shaping for degree arrangement
The harmonic content of field is lower, overcomes the shortcoming that Gas-gap Magnetic Field Resonance Wave content is high in existing p-m rotor magnetization method, beneficial
In the performance for improving magneto, operation stability and reliability are improved.
Description of the drawings
Fig. 1 is the sectional view of p-m rotor low harmony wave magnetizer of the present invention；
Fig. 2 is the parameter configuration diagram of p-m rotor low harmony wave magnetizer of the present invention；
Distribution diagram of magnetic line of force when Fig. 3 magnetizes for p-m rotor low harmony wave magnetizer of the present invention；
Fig. 4 is air-gap field waveform curve of the p-m rotor of the present invention in motor；
In figure：1st, for iron core, 2, for p-m rotor, 3, for magnetizing coil, N1、N2、N3、…、NmFor m under a magnetic polarity
A magnetic pole, Z1、Z2、Z3、…、ZmFor m magnetizing coil of a magnetic polarity, S1、S2、S3、…、SmFor the m of another magnetic polarity
A magnetic pole, Y1、Y2、Y3、…、YmFor m magnetizing coil under another magnetic polarity.
Specific embodiment
The present invention is described in more detail with reference to Figure of description and embodiment.
The method of the present invention is made of the magnetized head of each magnetic polarity the dentation magnetic pole of m equal central angles, Mei Gechong
Into low harmony wave proportionate relationship, modulation system fills the magnetic potential that magnetizes that the central angle that magnetic pole occupies is generated with the magnetizing coil in the magnetic pole
Magnetic pole applies magnetic fields in p-m rotor forming process to permanent magnetic powder so that permanent magnetic powder material internal magnetic is adjusted
Control property arrangement, so that the harmonic content that air-gap field is generated when being packed into motor after p-m rotor shaping is lower.With it is traditional
It is compared with modified magnetization method with device, using magnetizer made from the above method p-m rotor can be made to generate air gap magnetic
The harmonic content of field wave shape is lower.
It magnetizes embodiment as shown in Figure 1, the present apparatus is 4 low harmony wave of the two poles of the earth p-m rotor, mainly by iron core 1 and magnetizing coil
3 compositions, it is that p-m rotor 2 magnetizes that magnetizing coil 3, which is coupled the electric current that magnetizes and forms the magnetic potential that magnetizes,.The axial length of iron core 1 with
The axial length of p-m rotor 2 is equal.
As shown in Fig. 2, configuring diagram for the parameter of p-m rotor low harmony wave magnetizer of the present invention, 2m is set on iron core 1
A dentation magnetic pole, the center of circle angle that each magnetic pole is occupied are β=π/m electrical radians, and magnetizing coil 3 is filled by being wound on 2m dentation
The Z of magnetic pole1、Z2、Z3、…、ZmAnd Y1、Y2、Y3、…、YmIt forms, the yoke of magnetic pole periphery is coated in iron core 3 as the magnetic that magnetizes
Field provides necessary field circuit, and combines the support part that dentation magnetic pole doubles as magnetizer.One magnetic polarity magnetizes
Head is by m magnetic pole N1、N2、N3、…、NmIt forms, in magnetic pole rotating around magnetizing coil be Z1、Z2、Z3、…、Zm, magnetizing coil
The electric current that magnetizes of mating is I1、I2、I3、…、Im；The magnetized head of another magnetic polarity is by m magnetic pole S1、S2、S3、…、SmStructure
Rotating around magnetizing coil it is Y on into, magnetic pole1、Y2、Y3、…、Ym, magnetizing coil mating the electric current that magnetizes for I1、I2、I3、…、
Im。
In p-m rotor low harmony wave magnetization method and device of the present invention, the number of turn and lead-out wire of each magnetizing coil
It is all different that the electric current that magnetizes of the pulse power, which is coupled, to generate the magnetic potential that magnetizes of modulation system, is carried out for p-m rotor 2 low humorous
Ripple mode magnetizes；Under one magnetic polarity in m magnetic pole, the position angle where k-th of magnetic pole is k π/m electric arcs
Degree, the magnetizing coil number of turn are Wk, mating the electric current that magnetizes for Ik, the magnetic potential that magnetizes of generation is Fk=WkIk；K-th and kth+1
It is F to meet low harmony wave modulation relation between the magnetic potential that magnetizes that magnetic pole generatesk+1/Fk=Wk+1Ik+1/WkIk=sin [(k+1) π/
M]/sin (k π/m), wherein, k=1,2,3 ..., m-1；Similarly, m magnetic pole of another magnetic polarity is filled with above-mentioned magnetic polarity
Magnetic pole is symmetrical arranged on magnetic polarity geometric center lines.
In p-m rotor low harmony wave magnetization method and device of the present invention, made to simplify magnetizing coil, each magnetizing coil
The number of turn can be configured to relation of equality, i.e. W1=W2=...=Wm, in this way, the electric current that magnetizes of magnetizing coil is configured to low harmony wave pass
It is for Ik+1/Ik=sin [(k+1) π/m]/sin (k π/m), k=1,2,3 ..., m-1.
In p-m rotor low harmony wave magnetization method and device of the present invention, for simplify provide the electric current that magnetizes power supply architecture and into
This, the electric current that magnetizes of each magnetizing coil can be configured to relation of equality, i.e. I1=I2=...=Im, such magnetizing coil number of turn
Low harmony wave relation is configured to as Wk+1/Wk=sin [(k+1) π/m]/sin (k π/m), k=1,2,3 ..., m-1.
In above-described embodiment, in order to be arranged beneficial to the control of permanent magnetic powder material internal magnetic, the configuration of magnetizer
Should be suitble to magnetic pole magnetize magnetic potential modulation relation foundation and satisfaction, dentation magnetic pole and magnetizing coil can be designed and manufactured into
Structure that can be replaceable.In the various embodiments described above, iron core 1 is made of the high soft magnetic materials of magnetic permeability so that at magnetic field of magnetizing
In undersaturated condition；In order to be arranged beneficial to the control of permanent magnetic powder material internal magnetic, each magnetize extremely is put into the line that magnetizes
The notch that circle is set should be as small as possible, and low harmony wave effect of this notch beneficial to realization p-m rotor 2 is filled up using magnetic material.
By p-m rotor low harmony wave magnetization method of the present invention and device, it is right in 2 forming process of p-m rotor to realize
Permanent magnetic powder applies a kind of modulation system and magnetizes magnetic potential effect so that control arrangement occurs for permanent magnetic powder material internal magnetic, such as
Fig. 3 show magnetic line of force distribution situation when p-m rotor low harmony wave of the present invention magnetizes.With traditional and modified magnetization method
It is compared with device, the harmonic content of the air-gap field ripple generated when being packed into motor after the shaping of p-m rotor 2 is lower, such as Fig. 4 institutes
Show, wherein τ is the pole span of p-m rotor 2.
The various embodiments described above are 2 low harmony wave magnetization method of the two poles of the earth p-m rotor and device, but also promote and be suitable for multipole
Situation.
The foregoing is merely the present invention a kind of embodiment, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modifications, equivalent replacements and improvements are made, for example the inner rotor core in the present embodiment is changed to outer turn
Minor structure is changed to tray type structure etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of p-m rotor low harmony wave magnetization method, which is characterized in that the magnetized head of each magnetic polarity is by m equal central angles
Dentation magnetic pole form, magnetizing coil and electric current generation of magnetizing in position angle shared by each magnetic pole cooperation magnetic pole
Into low harmony wave modulation ratio relation, which applies magnetic field to permanent magnetic powder in p-m rotor forming process and makees the magnetic potential that magnetizes
With so that control arrangement occurs for permanent magnetic powder material internal magnetic, so that being generated when being packed into motor after p-m rotor shaping
The harmonic content of air-gap field is lower.
2. a kind of using a kind of device of p-m rotor low harmony wave magnetization method as described in claim 1, mainly by iron core and
Magnetizing coil forms, and the magnetized head of each polarity is by the magnetizing coil and cladding in m magnetic pole, each magnetic pole on iron core
Yoke in magnetic pole periphery is formed；The number of turn of each magnetizing coil is different, and the electricity of the pulse power is coupled in lead-out wire
Stream is also different, and so as to generate the different magnetic potentials that magnetizes, the p-m rotor to be placed under the cartridge that magnetizes magnetizes；Its feature
It is, the center of circle angle that each magnetic pole is occupied in m magnetic pole under a magnetic polarity is β=π/m electrical radians, is magnetized for k-th
The position angle of pole is k π/m electrical radians, and the magnetizing coil number of turn is Wk, mating the electric current that magnetizes for Ik, the magnetic potential that magnetizes of generation is Fk
=WkIk；It is F to meet low harmony wave modulation relation between k-th and the magnetic potential that magnetizes of+1 magnetic pole generation of kthk+1/Fk=Wk+ 1Ik+1/WkIk=sin [(k+1) π/m]/sin (k π/m), wherein, k=1,2,3 ..., m-1；M of another magnetic polarity are magnetized
Pole is symmetrical arranged with above-mentioned magnetic polarity magnetic pole on magnetic polarity geometric center lines.
3. the device of a kind of p-m rotor low harmony wave magnetization method according to claim 2, it is characterised in that each magnetize
Coil turn can be configured to relation of equality, i.e. W1=W2=...=Wm, in this way, the electric current that magnetizes of magnetizing coil be configured to it is low humorous
Ripple relation is Ik+1/Ik=sin [(k+1) π/m]/sin (k π/m), k=1,2,3 ..., m-1.
4. the device of a kind of p-m rotor low harmony wave magnetization method according to claim 2, which is characterized in that each magnetize
The electric current that magnetizes of coil can be configured to relation of equality, i.e. I1=I2=...=Im, such magnetizing coil number of turn is configured to low humorous
Ripple relation is Wk+1/Wk=sin [(k+1) π/m]/sin (k π/m), k=1,2,3 ..., m-1.
A kind of 5. device of p-m rotor low harmony wave magnetization method according to claim 2, which is characterized in that the iron
The axial length of the heart is equal with the axial length of p-m rotor, is used between magnetic pole in order to be embedded in the notch of magnetizing coil setting
Magnetic material is filled up.
A kind of 6. device of p-m rotor low harmony wave magnetization method according to claim 5, which is characterized in that the iron
The heart is made of the high soft magnetic materials of magnetic permeability, and magnetizing coil uses enamel insulated wire coiling, is carried out after being nested in dentation magnetic pole
Insulation processing is done in dipping lacquer and drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610264517.0A CN105762999B (en) | 2016-04-26 | 2016-04-26 | A kind of p-m rotor low harmony wave magnetization method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610264517.0A CN105762999B (en) | 2016-04-26 | 2016-04-26 | A kind of p-m rotor low harmony wave magnetization method and device |
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| Publication Number | Publication Date |
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| CN105762999A CN105762999A (en) | 2016-07-13 |
| CN105762999B true CN105762999B (en) | 2018-05-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107123503B (en) * | 2017-06-29 | 2019-01-18 | 辽宁科技学院 | Pre-regulation and control device for permanent magnet motor rotor magnetization |
| CN112865370A (en) * | 2021-03-15 | 2021-05-28 | 美的威灵电机技术（上海）有限公司 | Motor rotor and motor |
| CN113113989A (en) * | 2021-03-15 | 2021-07-13 | 美的威灵电机技术（上海）有限公司 | Outer rotor permanent magnet motor and washing machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7592889B2 (en) * | 2004-04-20 | 2009-09-22 | Aichi Steel Corporation | Anisotropic bond magnet for four-magnetic-pole motor, motor using the same, device for orientation processing of anisotropic bond magnet for four-magnetic-pole motor |
| CN104319060A (en) * | 2014-09-17 | 2015-01-28 | 徐州通用高新磁电有限公司 | Sinusoidal magnetizing method and device for permanent magnet rotor |
| CN204361868U (en) * | 2014-09-17 | 2015-05-27 | 徐州通用高新磁电有限公司 | The sinusoidal magnetizer of p-m rotor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI298892B (en) * | 2002-08-29 | 2008-07-11 | Shinetsu Chemical Co | Radial anisotropic ring magnet and method of manufacturing the ring magnet |
| JP5056959B2 (en) * | 2011-01-13 | 2012-10-24 | 三菱マテリアル株式会社 | Recycling method of motor |
| JP6061641B2 (en) * | 2012-11-21 | 2017-01-18 | 三菱電機株式会社 | Permanent magnet magnetizer |
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- 2016-04-26 CN CN201610264517.0A patent/CN105762999B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7592889B2 (en) * | 2004-04-20 | 2009-09-22 | Aichi Steel Corporation | Anisotropic bond magnet for four-magnetic-pole motor, motor using the same, device for orientation processing of anisotropic bond magnet for four-magnetic-pole motor |
| CN104319060A (en) * | 2014-09-17 | 2015-01-28 | 徐州通用高新磁电有限公司 | Sinusoidal magnetizing method and device for permanent magnet rotor |
| CN204361868U (en) * | 2014-09-17 | 2015-05-27 | 徐州通用高新磁电有限公司 | The sinusoidal magnetizer of p-m rotor |
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