CN101501964A - Permanent electric machine for restraining tooth torque with compensation technology - Google Patents
Permanent electric machine for restraining tooth torque with compensation technology Download PDFInfo
- Publication number
- CN101501964A CN101501964A CNA2007800296333A CN200780029633A CN101501964A CN 101501964 A CN101501964 A CN 101501964A CN A2007800296333 A CNA2007800296333 A CN A2007800296333A CN 200780029633 A CN200780029633 A CN 200780029633A CN 101501964 A CN101501964 A CN 101501964A
- Authority
- CN
- China
- Prior art keywords
- motor
- permanent magnet
- cogging torque
- compensating
- stator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A permanent electric machine for restraining tooth torque with compensation technology consists of an electric machine system including an electric machine plate (1) and a compensation system including a compensation plate (2), in which the position of the stator of the compensation system relative to the rotor is shifted with that of the electric machine plate with a certain angle.
Description
Suppress the magneto of cogging torque using compensation branch art
Technical field
The present invention relates to a kind of new method for being used to suppress cogging torque of permanent magnet motor.Background technology
The torque that the interphase interaction of permanent magnet and iron core is produced when cogging torque is magneto no power.Especially in variable speed drives, when torque frequency is consistent with the mechanical resonance frequency of stator or rotor, the vibration and noise that cogging torque is produced will be exaggerated, and the even running of motor is even influenced whether when serious.Especially for permanent magnetism wind power generator system, it is desirable to which starting resistance turn square as far as possible is small, should be tried one's best the resistive torque for reducing and being produced by generator slot effect so that wind wheel can be started rapidly when wind speed is relatively low.
The method for being used to suppress cogging torque that presently, there are mainly has skewed stator slot or rotor chute, reduction stator slot A/F, changes polar arc width, moves rotor magnetic pole, stator slot uneven distribution, stator tooth fluting, stator using fractional-slot, the change magnet steel direction of magnetization, Double-stator motor side set structure etc..The problem of these methods typically all bring new while cogging torque is reduced, if skewed slot method is due to end effect, torque pulsation can not be actually completely eliminated, while reducing the output torque of motor to a certain extent, skewed slot or helical teeth are also possible to increase leakage inductance and stray loss.
The applicant had once applied entitled " adapt to changing torque power frequency stabilization phase locking generator, PCT Patent（Number of patent application is " PCT/CN2007/000227 "), on the base of this structure, the compensation technique for suppressing motor teeth groove pulsation is designed, is applied to while the technology can also extend on other magnetoes.Brief description of the drawings
Fig. 1 is the compensation schematic diagram of the magneto cogging torque of the present invention；
Fig. 2 is to be distributed design diagram according to the array type of the motor of the present invention.
Embodiment
Below according to the design of a preferred embodiment description present invention, this will make people in the art is negative can be more clearly understood from the thought and various advantages of the present invention.However, it will be appreciated by those skilled in the art that this does not represent the precise forms for limiting the invention to embodiment.Fig. 1 is with number of stator slots（Outer ring）3 and rotor number of poles（Inner ring）Exemplified by 2（But the present invention is not limited to this number of stator slots rotor pole array and closed）It show schematically the mentality of designing of teeth groove pulsation torque compensation method of the present invention, i.e. by design of electrical motor into two systems assembly, one system is used as motor and used, as shown in the electric disc on Fig. 1 left sides, another system is compensation disk, as shown in the compensation disk on the right of Fig. 1, disk is compensated compared with electric disc, offset corresponding angle Θ to offset the cogging torque of electric disc by stator rotor, Θ size depends on θ=30 in number of stator slots and the relation and the waveform of cogging torque of rotor number of poles, Fig. 1..Compensating can be with coiling on the stator slot of disk, can not also coiling.If stator slot does not have coiling, compensation disk suppresses the effect of cogging torque except that can reach, can also used as an inertia disk；If stator slot has coiling, compensation disk can also be used as an additional motor, except that, it is necessary to an additional phase converter is so as to reach the effect exerted oneself same with electric disc.
For electric disc, it then follows the rule of common electric machine teeth groove pulsation, when the permanent magnet of stator slot and rotor is uniformly distributed, have：
_ Q * 2p ( 1 )In formula, NpRotate a circle the number of alternations of cogging torque waveform for rotor, and Q is number of stator slots（Salient pole number）, 2p is rotor number of poles, and HCF { Q, 2p } represents the greatest common divisor for taking Q and 2p.
According to（1) formula, it is known that, a pulsation period correspondence and the inswept angle of rotor
For：
Φ = 360 ΝΡ
Mentality of designing of the present invention is the angle that the stator for compensating disk is offset to θ=Φ/2 with the relative position of rotor compared with electric disc, i.e.,：
Φ = 360°— 180.HCF Q, 2p] this design is in the ideal situation（Such as there is following rule in the pulsation of electric disc teeth groove, the waveform in a cycle is Central Symmetry, and the waveform in half period is axial symmetry）, the cogging torque that disk can be completely counterbalanced by being produced by electric disc is compensated, even if the cogging torque waveform of electric disc is undesirable, the cogging torque of electric disc can also be to greatest extent compensated, making the behavior in service of motor is improved.
For the applicant apply it is entitled " adapt to changing torque power frequency stabilization phase locking generator, PCT Patent（Number of patent application is " PCT/CN2007/000227 "), the motor of this similar many dish structures, the method for compensation cogging torque can also be extended.The application for a patent for invention is incorporated by the application in the way of referring to.Fig. 2 is distributed design diagram to be a kind of according to the array type of motor of the present invention, i.e., assemble multi-layer stator rotor electric machine disk vertically.Though it is shown that 5 layers in figure, but there can essentially be less or more layer（It is for example tens of, hundreds of）.If the stator slotted core profile shape compensated on disk substituted with permanent magnet, the amplitude of compensation torque can be greatly improved, and can thus jump out electric disc quantity and compensation disk quantity 1:1 limitation, designs multiple electric discs and is closed with a small number of compensation Pan Group, for example, a compensation disk can coordinate several electric discs, or all electric discs are divided into several groups（One group contains several electric discs）, each assemble standby compensation disk, etc..If making the permanent magnet of rotor pole opposite with stator slot permanent magnet homopolarity simultaneously, due to permanent magnet homopolar-repulsion, the effect of magnetic suspension bearing can also be partly played.The present invention has various modifications and alternative forms, and the graphic specific embodiment of accompanying drawing institute exists
Here as example is described in detail.But it should be understood that specific embodiment described here is not intended to limit the invention to disclosed concrete form.The present invention includes all modifications belonged in the spirit and scope of the present invention that claims are limited, equivalent and alternative.
Claims (1)
- 1. a kind of motor for suppressing cogging torque of permanent magnet motor by compensating, it is characterized in that, by design of electrical motor into two systems combination, include the electric system of electric disc and include the compensation system of compensation disk, wherein the stator of compensation disk offsets certain angle with the relative position of rotor compared with electric disc.2. the motor according to claim 1 for suppressing cogging torque of permanent magnet motor by compensating, it is characterised in that the stator of compensation disk offsets certain angle, θ with the relative position of rotor compared with electric disc,HCF Q, 2p] and in formula, Q is number of stator slots（Salient pole number）, 2p is rotor number of poles, and HCF { Q, 2p } represents the greatest common divisor for taking Q and 2p.3. the motor according to claim 1 or 2 for suppressing cogging torque of permanent magnet motor by compensating, it is characterised in that stator slot not coiling.4. according to the motor for suppressing cogging torque of permanent magnet motor by compensating described in claim 1 or 2, it is characterized in that, stator slot is the stator slot for being wound with coil, compensation disk is used as an additional motor, an additional phase converter is so as to reach the effect exerted oneself same with electric disc.5. the motor according to claim 1 or 2 for suppressing cogging torque of permanent magnet motor by compensating, it is characterised in that stator slotted core profile shape is substituted with permanent magnet.6. the motor according to claim 5 for suppressing cogging torque of permanent magnet motor by compensating, it is characterised in that have multiple electric disc forming array formulas to be distributed, multiple electric discs are combined with minority compensation disk.7. the motor according to claim 5 for suppressing cogging torque of permanent magnet motor by compensating, it is characterised in that have multiple electric disc forming array formulas to be distributed, all electric discs are divided into several groups, each assemble a standby electric disc.8. the motor for suppressing cogging torque of permanent magnet motor by compensating according to any one of claim 5-7, makes the permanent magnet of rotor pole and stator slot permanent magnet homopolarity opposite, so as to compensate the effect that disc portion plays magnetic suspension bearing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2007/002178 WO2009009924A1 (en) | 2007-07-17 | 2007-07-17 | Permanent electric machine for restraining tooth torque with compensation technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101501964A true CN101501964A (en) | 2009-08-05 |
| CN101501964B CN101501964B (en) | 2011-04-13 |
Family
ID=40259281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800296333A Expired - Fee Related CN101501964B (en) | 2007-07-17 | 2007-07-17 | Permanent electric machine for restraining tooth torque with compensation technology |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101501964B (en) |
| WO (1) | WO2009009924A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199664A (en) * | 2013-03-22 | 2013-07-10 | 哈尔滨工业大学 | Staggered grooved structure low location torque outer rotor permanent-magnet synchronous motor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151889B (en) * | 2013-03-22 | 2015-08-19 | 哈尔滨工业大学 | Wrong electrode structure low location torque internal rotor permanent-magnetic synchronous motor |
| CN105490603B (en) * | 2015-12-28 | 2018-01-12 | 浙江科技学院 | A kind of electric automobile hub side electromagnetism shock-absorbing control method of In-wheel motor driving |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19501750A1 (en) * | 1995-01-21 | 1996-07-25 | Licentia Gmbh | Permanent-magnet motor e.g. for powering vehicle power-assisted steering |
| JPH1094235A (en) * | 1996-09-12 | 1998-04-10 | Asahi Eng:Kk | Hybrid stepping motor |
| IT1313775B1 (en) * | 1999-10-06 | 2002-09-17 | Sicce Spa | MOTOR WITH BIPOLAR PERMANENT MAGNET ROTOR, WITH EASY START. |
| CN1303169A (en) * | 2000-01-06 | 2001-07-11 | 刘国林 | Permanent-magnet electric motor |
| JP4828043B2 (en) * | 2001-05-31 | 2011-11-30 | ミネベア株式会社 | PM stepping motor |
-
2007
- 2007-07-17 CN CN2007800296333A patent/CN101501964B/en not_active Expired - Fee Related
- 2007-07-17 WO PCT/CN2007/002178 patent/WO2009009924A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199664A (en) * | 2013-03-22 | 2013-07-10 | 哈尔滨工业大学 | Staggered grooved structure low location torque outer rotor permanent-magnet synchronous motor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009009924A1 (en) | 2009-01-22 |
| CN101501964B (en) | 2011-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4644832B2 (en) | Rotating electrical machine | |
| CN101322303B (en) | Motor | |
| CN103779995B (en) | It is radially inserted into formula PM rotor and its manufacture method | |
| JP3983423B2 (en) | Electric motor | |
| JP5359192B2 (en) | Anisotropic permanent magnet motor | |
| US6822368B2 (en) | Rotary permanent magnet electric motor having stator pole shoes of varying dimensions | |
| JP7000710B2 (en) | Rotating machine | |
| JP5385077B2 (en) | Rotating motor | |
| US8970080B2 (en) | Electric motor having reduced cogging torque | |
| JP2013106496A (en) | Electric rotary machine | |
| JP2013162556A (en) | Electric rotary machine | |
| US20130134805A1 (en) | Switched reluctance motor | |
| US10916981B2 (en) | Permanent magnet rotating device having minimized cogging torque, permanent magnet generator using same, and permanent magnet motor | |
| US7535149B2 (en) | Permanent-magnet excited synchronous motor | |
| JP7056070B2 (en) | Rotating electric machine | |
| Ueda et al. | Cogging torque reduction on transverse-flux motor with multilevel skew configuration of toothed cores | |
| JP5419991B2 (en) | Permanent magnet synchronous motor | |
| CN101501964A (en) | Permanent electric machine for restraining tooth torque with compensation technology | |
| JP6497173B2 (en) | Switched reluctance rotating machine | |
| KR100912637B1 (en) | Rotary machine and electromagnetic machine | |
| US10833545B2 (en) | Rotor for hybrid homopolar machine | |
| CN102761185B (en) | Permanent-magnetic auxiliary synchronous reluctance motor and installation method of rotor and motor of reluctance motor | |
| JP2005130689A (en) | Rotating electric machine | |
| CN105576869B (en) | A kind of surface inserting formula self-starting permasyn motor rotor | |
| KR101628150B1 (en) | Rotor structure of wrsm motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20130717 |