CN201444598U - Magnetic pole module for motor rotor and motor rotor - Google Patents
Magnetic pole module for motor rotor and motor rotor Download PDFInfo
- Publication number
- CN201444598U CN201444598U CN2008900000438U CN200890000043U CN201444598U CN 201444598 U CN201444598 U CN 201444598U CN 2008900000438 U CN2008900000438 U CN 2008900000438U CN 200890000043 U CN200890000043 U CN 200890000043U CN 201444598 U CN201444598 U CN 201444598U
- Authority
- CN
- China
- Prior art keywords
- rotor
- magnetic pole
- pole module
- magnetic
- module
- 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.)
- Expired - Fee Related
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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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- 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
-
- 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
- H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets
-
- 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
- H02K2213/12—Machines characterised by the modularity of some components
Abstract
The utility model aims at providing a magnetic pole module (30) for a motor rotor and a corresponding rotor. According to the utility model, the magnetic pole module (30) comprises a non-magnetic body part (2') with a width equal to that of at least two rotor magnetic poles (8) and at least two sheet groups (10) which constitute the corresponding magnetic pole (8) of the rotor and are attached to the body part (2'). In the magnetic pole module (30), a permanent magnet piece (18) is matched with a space between two neighboring sheet groups (10).
Description
Technical field
The utility model is involved in a kind of magnetic pole module and a kind of rotor that is used for motor that is used for rotor.
Background technology
In permanent magnet synchronous motor, use the permanent magnet that in the rotor of motor, assembles to generate exciting field.Permanent magnet be matched with rotor, on the surface of air gap, perhaps permanent magnet is embedded in the magnetic core of rotor.Magnetic core is the most normal to be made by following ferromagnetic iron plate, and these ferromagnetic iron plates are assembled into the sheet group of extending in the whole length of rotor.The design standard that is used to set permanent magnet and sheet group yardstick is the required exciting power of motor.The mechanical structure and fastening being subjected to of different parts such as the such factor affecting of the size of power that they are applied and motor.
Excitation arranges having the motor of big number of magnetic poles and big root diameter, particularly to the motor of the stator winding that has little slot factor and concentrate, specific (special) requirements arranged.In these motors, groove is that factor is q＜1, and the groove coefficient is defined as q=Q/ (m*2*p), and wherein Q refers to the groove number, and m refers to the phase number, and p refers to the number of the pole pair in the motor.The winding of concentrating is meant following stator winding, and wherein this winding tooth rim being wound in stator encloses.Because number of magnetic poles is big, so the space of answering with a pole pair on the circumferencial direction of rotor is little.The radial passage that is used for magnetic flux is narrow.Usually possibility is not used surface magnet mentioned above, because surface magnet can not provide abundant magnetic flux density for the heavy driving of loading.
The fastening of permanent magnet and magnetic core must be arranged reliably in order to avoid destroy flowing of magnetic flux.The good efficiencies of permanent magnet motor also requires spuious flux minimum.Be difficult to during making motor, control large diameter magnetic core, this means and to plan in advance that production and manufacturing technology are to allow that parts are fabricated to the smaller portions that are easier to control in advance.
The utility model content
The purpose of this utility model is to create a kind of efficient and favourable rotor magnetic pole structure that is used for large diameter motor.
According to an aspect of the present utility model, provide a kind of magnetic pole module that is used for rotor.This magnetic pole module comprises at least two sheet groups at least two magnetic poles, that be attached to body part that width equals the non magnetic body part of at least two rotor magnetic poles and constitutes described rotor, the space remains between two adjacent sheet groups in the magnetic pole module thus, and permanent magnet pieces may be fitted in the described space.
According on the other hand of the present utility model, a kind of rotor that is used for motor by permanent magnet excitation is provided, the magnetic circuit of this rotor comprises by permanent magnet and is coupled to the core segment that magnetic conduction sheet group wherein forms that the number of magnetic poles of this motor is big.This core segment is formed by the module on the excircle that is matched with described rotor; At least two permanent magnets can be coupled to each module, and described module constitutes at least two magnetic poles accordingly, and described magnetic pole module can be attached to described rotor center.
In according to solution of the present utility model, the field structure of the rotor of motor is formed by several magnetic pole modules on the outer surface that is attached to rotor in a circumferential direction continuously.Can make the magnetic sheet group that is used for the magnetic pole module individually.This makes them be easier to control and allows they are made individually and finishes.According to solution of the present utility model will reduce significantly will be on rotor center mounted component number and will be fabricated into the boring number of rotor center.Also will reduce significantly at the rotor manufacturing time in when assembling with in set-up time of factory.This solution also helps the automation of making and assembling.
Body construction according to solution of the present utility model the manufacturing of body construction simplified significantly more with easy, because need not processing by aluminium by being crushed to.In addition, make the spuious flux between the magnetic pole minimum according to structure of the present utility model, this has improved efficiency of motor.
Utilization is according to rotor of the present utility model, and the core segment of the magnetic circuit of rotor is formed by the module on the excircle that is matched with rotor; At least two permanent magnets can be coupled to each module on the circumferencial direction of rotor, this module constitutes two magnetic poles, and the magnetic pole module can be attached to rotor center.Because complete magnetic pole module can be attached to rotor center, so reduce the rotor manufacturing time and reduce built-up time especially in factory.
According to a preferred embodiment of the present utility model, the width of magnetic pole module is corresponding to four rotor magnetic poles.Therefore the body construction module can be attached to rotor center according to equal intervals in a circumferential direction attachment screw being positioned under a situation below the permanent magnet.
According to a kind of preferred ambient, magnetic pole module body construction by it between the sheet group can be attached to rotor center.This permission is not having attached body construction under the situation of following permanent magnet, these permanent magnets for example can be installed on subsequently rotor in the radial direction and can use the attachment strip in the groove that is coupled on the sheet group to come locks in place.Can be during installation excitation permanent magnet not, this makes them be easier to control, and will cooperate in place after at appropriate direction excitation permanent magnet.On the other hand, in scope of the present utility model, also can use the permanent magnet of pre-excitation.Be matched with the attachment strip supports permanent magnets opposing centrifugal force but also protect them to avoid dust and erosion not only on the permanent magnet top.
According to a preferred feature of the present utility model, sheet group and body part use the shape locking to engage interlocking.Useful and practical joint engages particularly including dovetail joint that some examples are arranged in the prior art or T fluting.In conjunction with the utility model, they have realized the flexible variation of practical and actual assembled and assembling sequence.The sheet group can be integrally or as shorter section even an a slice be coupled to body part.
According to another preferred feature, non magnetic body part is an aluminium.Aluminium base electricity in it, magnetic and intensity property are feasible as the body part material.Extruding manufactures not only easily the sufficient aluminium parts of yardstick accuracy but also is with low cost.
According to a preferred embodiment, rotor center is non magnetic and conduction, this means that rotor center also is suitable for as a kind of suppressor pulse flux and the damping winding of loss due to reducing thus.The aluminium body part is because its thermal conductivity also helps cooled rotor.
Description of drawings
Hereinafter will by some embodiment the utility model be described more specifically by reference the following drawings:
-Fig. 1 illustrates according to magnetic pole module of the present utility model,
-Fig. 2 illustrate be assemblied in epitrochanterian according to magnetic pole module of the present utility model, and
-Fig. 3 illustrate be assemblied in epitrochanterian according to another magnetic pole module of the present utility model.
Embodiment
Fig. 1 illustrate from module ends check according to magnetic pole module of the present utility model.The width of module on the circumferencial direction of rotor is corresponding to three magnetic poles, and it has by the body construction 2 of aluminium by being crushed to.The length of module on the axial direction of motor is corresponding to the length of rotor.The inner surface 4 of body construction is slight curving, and this is corresponding to the cylindrical outer surface of rotor center.On the circumferencial direction of rotor, an end of body construction 2 has assembling notch 3, and the other end has corresponding fitting tab 5.The outer surface of the body construction of module has swallow-tail form projection or tenon 6 at each magnetic pole 8 place.Corresponding dovetail joint notch 12 is formed at the lower edge of the sheet group of being made by magnetic conduction sheet 10.Sheet group 10 constitutes the magnet rotor core.Rotor core comes excitation with the permanent magnet that is positioned between them, thereby alternately forms the N utmost point and the S utmost point in a circumferential direction.The top margin of these utmost points is along air gap in opposite directions the rotor outer surface of formation with motor.Preferably, the sidewall 14 of cutting blade group slightly diagonally, thus the coffin 15 that is used for permanent magnet remaines between the adjacent sheet group.15 places in the space get out the boring 11 that is used for attached bolt in body construction.Several boring 11 is arranged on the longitudinal direction of rotor, and have accordingly in the boring of being matched with so that module is attached to reliably the bolt of rotor.The most external of the sidewall 14 of sheet group comprises narrow attached groove 16, and the attachment strip 20 (Fig. 2) that is used for permanent magnet 18 is coupled to these attached grooves after the placed in position at permanent magnet.In rotor core, get out boring 22, and use the screw rod 24 that is matched with in the boring to oppress the sheet of rotor core by pole end plate 26.
Fig. 2 illustrates the magnetic pole module 30 that is attached to rotor center 28.Magnetic pole module 30 has four magnetic poles, but aspect other corresponding to the module among Fig. 1, and mutually corresponding part has same numeral in Fig. 1 and Fig. 2.
During making rotor, the sheet group 10 usefulness dovetail joint that constitute rotor core are attached to the body construction of magnetic pole module.For example by the sheet group being cut into the sheet that appropriate shape manufacturing is used for the sheet group with the sheet cutter.The end plate 26 that use is matched with end place is closely oppressed the sheet group with the screw rod 24 that passes the sheet group and is in the same place.The body part 2 ' of each magnetic pole module uses two bolts 32 in the boring 34 that is coupled between the magnetic pole core to be attached to rotor center 28 in a circumferential direction.The number of the attached bolt 32 on the axial direction of rotor depends on the length of rotor.The curvature of the bottom 31 of magnetic pole module body part 2 ' is corresponding to the curvature of the external peripheral surface of rotor center 28.Bolt 32 is matched with two outermost openings places that are used for permanent magnet 18 in the magnetic pole module.One side of magnetic pole module has assembling notch 38 on the circumferencial direction of rotor, and opposite side has the corresponding fitting tab 40 that is used to be aligned with each other and support the magnetic pole module.Attached when in place when the magnetic pole module, permanent magnet 18 is coupled to the magnetic pole module in the radial direction at rotor between sheet group 10.Therefore, some permanent magnets are between the sheet group of single magnetic pole module, and some permanent magnets are between the outer plate group of two adjacent pole modules.Permanent magnet is adhered to the magnetic pole module, and attachment strip 20 permanent magnet with an air gap side in opposite directions on be matched with in the attached groove of making for this purpose 16.Attachment strip supports permanent magnets and resist centrifugal force and be protected from the erosion of environment and other adverse effect.
Thought of the present invention also comprises directly assembling magnetic pole module on the surface of rotor center, this means that body part at first is attached to rotor center, after this with the sheet group and subsequently permanent magnet is cooperated in place.In this case, body part also can attach to the position of sheet group.
Fig. 3 illustrates an embodiment of the present utility model, wherein the attached embodiment that is different from Fig. 2 of sheet group and body part.In the scope of application, the label among Fig. 3 is corresponding to previous used numbering.T shape tenon 44 is formed in the body part 42, and accordingly, cooperates T shape fluting 46 to be formed in the sheet group 43.Conjunction 48 is formed at the ragged edge of sidewall of sheet group along so that supports permanent magnets 18 opposing centrifugal force.In this embodiment, permanent magnet 18 is installed on the axial direction of rotor in the opening between the sheet group, perhaps installs simultaneously with sheet group 43.In order to take precautions against erosion, the outer surface 45 of permanent magnet for example scribbles lacquer or resin.The screw 50 attached body parts 42 that the process rotor center 52 that utilization tightens from the inside of rotor center 52 is extended.
Embodiment shown in Fig. 2 and Fig. 3 also can make up to implement thought of the present utility model under usable condition.Also can use end plate to be implemented in attached between sheet group and the body part, end plate also is connected to the end of body part with bolt in this case.Different with above-mentioned situation, attached between adjacent part is also can be for example crooked or fully or partly tilt.
According to the number of magnetic poles in the rotor of the present utility model greatly, at least more than ten.Be used for implementing efficiently having tens of magnetic poles or even more than the rotor of 100 magnetic poles according to solution of the present utility model.Feasible especially according to rotor of the present utility model for motor with concentrated winding (this means that winding layers is wound in single tooth rim and encloses).
Above the utility model is described by some embodiment.Not will be understood that this description restriction scope of patent protection; Embodiment of the present utility model can change within the scope of the appended claims.For example, the body part of magnetic pole module can extend to the border between sheet group and the permanent magnet in a circumferential direction.When directly assembling the magnetic pole module on rotor center, attached between the body part also can be in the position of sheet group.
Label: 2,2 ' body construction; 3 assembling notches; The inner surface of 4 body constructions; 5 fitting tabs; 6 dovetail rabbet workings; 8 magnetic poles; 10 groups; 11 are used for the boring of attached bolt; 12 dovetail groove orifices; The sidewall of 14 groups; 15 are used for the space of permanent magnet; 16 attached grooves; 18 permanent magnets; 20 attachment strip; 22 borings; 24 screw rods; 26 end plates; 28 rotor centers; 30 magnetic pole modules; The bottom of 31 body parts; 32 attached bolts; 34 borings; 38 assembling notches; 40 fitting tabs; 42 body parts; 44 T shape tenons; The outer surface of 45 permanent magnets; 46 T shapes fluting; 48 conjunctions; 50 screws; 52 rotor centers
Claims (11)
1. magnetic pole module (30) that is used for rotor, it is characterized in that, described magnetic pole module (30) comprises that width equals the non magnetic body part (2 of at least two rotor magnetic poles (8), 2 ') and constitute described rotor at least two magnetic poles (8), be attached to described body part (2,2 ') at least two sheet groups (10), space (15) remain between two adjacent sheet groups (10) in the described magnetic pole module (30) thus, and permanent magnet pieces (18) can be coupled in the described space.
2. magnetic pole module according to claim 1 is characterized in that, the width of described magnetic pole module (30) equals four rotor magnetic poles (8).
3. magnetic pole module according to claim 1 is characterized in that, described magnetic pole module (30) body part (2,2 ') by it between described group can be attached to described rotor center (28).
4. magnetic pole module according to claim 3, it is characterized in that, described permanent magnet (18) after described magnetic pole module (30) attached, described rotor can be installed to described magnetic pole module (30) in the radial direction, and can use attachment strip (20) to come locks in place.
5. according to the described magnetic pole module of the arbitrary claim in the claim 1 to 4, it is characterized in that described group (10) and described body part (2,2 ') use shape locking joint (6,12) to come interlocking.
6. magnetic pole module according to claim 5 is characterized in that, described group and body part use dovetail joint (6,12) or T fluting to engage (44,46) to come interlocking.
7. according to the described magnetic pole module of the arbitrary claim in the claim 1 to 4, it is characterized in that described non magnetic body part (2,2 ') is an aluminium.
8. rotor that is used for motor by permanent magnet excitation, the magnetic circuit of described rotor comprises by permanent magnet (18) and is coupled to the core segment that magnetic conduction sheet group (10) wherein forms, the number of magnetic poles of described motor is big, it is characterized in that described core segment is formed by the module on the excircle that is matched with described rotor (30); At least two permanent magnets (18) can be coupled to each module (30), and described module constitutes at least two magnetic poles (8) accordingly, and described magnetic pole module (30) can be attached to described rotor center (28).
9. rotor according to claim 8 is characterized in that, described magnetic pole module (30) comprises sheet group (10) and is attached to the non magnetic body part (2,2 ') of described group (10).
10. rotor according to claim 9 is characterized in that, described non magnetic body part (2,2 ') conduction and heat conduction.
11. the described rotor of arbitrary claim in 10 according to Claim 8, it is characterized in that, described magnetic pole module (30) comprise be used for permanent magnet (18), with the excircle opening (15) in opposite directions of described rotor, and the available attachment strip of described opening (15) (20) is come closed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20070183A FI119960B (en) | 2007-03-02 | 2007-03-02 | Electric Machine Rotor Hub Module and Electric Machine Rotor |
| FI20070183 | 2007-03-02 | ||
| PCT/FI2008/000035 WO2008107512A1 (en) | 2007-03-02 | 2008-03-03 | Pole module for rotor of electric machine and rotor of electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201444598U true CN201444598U (en) | 2010-04-28 |
Family
ID=37929988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008900000438U Expired - Fee Related CN201444598U (en) | 2007-03-02 | 2008-03-03 | Magnetic pole module for motor rotor and motor rotor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN201444598U (en) |
| FI (1) | FI119960B (en) |
| WO (1) | WO2008107512A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849391A (en) * | 2017-03-06 | 2017-06-13 | 新疆金风科技股份有限公司 | Magnetic pole module, rotor, motor and wind power generating set |
| CN104428979B (en) * | 2012-06-29 | 2019-07-02 | 通用电气再生风能技术有限公司 | PM rotor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB341666A (en) * | 1928-12-22 | 1931-01-22 | British Thomson Houston Co Ltd | Improvements in and relating to rotors for dynamo-electric machines |
| FR2184602B1 (en) * | 1972-05-18 | 1976-11-05 | Siemens Ag | |
| CA1323650C (en) * | 1985-11-12 | 1993-10-26 | Franklin Lee Forbes | Electrically commutated motor having an edgewise wound yoke |
| US5952755A (en) * | 1997-03-18 | 1999-09-14 | Electric Boat Corporation | Permanent magnet motor rotor |
| KR19990077581A (en) * | 1998-03-05 | 1999-10-25 | 가나이 쓰도무 | Alternating current generator for use in vehicle |
| DE10302084A1 (en) * | 2002-10-25 | 2004-05-13 | Continental Teves Ag & Co. Ohg | Rotor module for electric motor drive has cylindrical carrier for permanent magnets provided by combining plastics carrier component with sheet metal carrier component |
| RU2247463C2 (en) * | 2002-12-26 | 2005-02-27 | Открытое акционерное общество "Нефтяная компания "ЛУКойл" (ОАО НК ЛУКойл) | Submersible permanent-magnet motor |
| DE10301079A1 (en) * | 2003-01-14 | 2004-07-29 | Siemens Ag | Flat arrangement of permanent magnets |
-
2007
- 2007-03-02 FI FI20070183A patent/FI119960B/en not_active IP Right Cessation
-
2008
- 2008-03-03 WO PCT/FI2008/000035 patent/WO2008107512A1/en active Application Filing
- 2008-03-03 CN CN2008900000438U patent/CN201444598U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104428979B (en) * | 2012-06-29 | 2019-07-02 | 通用电气再生风能技术有限公司 | PM rotor |
| CN106849391A (en) * | 2017-03-06 | 2017-06-13 | 新疆金风科技股份有限公司 | Magnetic pole module, rotor, motor and wind power generating set |
| CN106849391B (en) * | 2017-03-06 | 2019-08-02 | 新疆金风科技股份有限公司 | Magnetic pole module, rotor, motor and wind power generating set |
Also Published As
| Publication number | Publication date |
|---|---|
| FI119960B (en) | 2009-05-15 |
| WO2008107512A1 (en) | 2008-09-12 |
| FI20070183A (en) | 2008-09-03 |
| FI20070183A0 (en) | 2007-03-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100428 Termination date: 20130303 |