CN101399474A - Rotor for permanent magnet synchronous motor - Google Patents
Rotor for permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN101399474A CN101399474A CNA2007100467019A CN200710046701A CN101399474A CN 101399474 A CN101399474 A CN 101399474A CN A2007100467019 A CNA2007100467019 A CN A2007100467019A CN 200710046701 A CN200710046701 A CN 200710046701A CN 101399474 A CN101399474 A CN 101399474A
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- permanent magnet
- synchronous motor
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention discloses a permanent in-phase electric motor stator. A plurality of groups of permanent magnets are arranged on the stator iron core of the permanent in-phase electric motor stator. Each group of permanent magnet consists of two permanent magnetic monomers, the shape and polarity arrangement direction of the two permanent magnetic monomers are same and the two permanent magnetic monomers are attracted together by magnetic force. When adopting the permanent in-phase electric motor stator of the invention to cooperate with the stator of the present permanent in-phase electric motor, efficiency of electric motors can be improved.
Description
Technical field
The present invention relates to be used for the rotor of permagnetic synchronous motor, more particularly, relate to the built-in synchronous electric motor rotor of a kind of permanent magnet.
Background technology
The field structure of existing permagnetic synchronous motor is according to the direction of magnetization of permanent magnet, can be divided into radial, tangential and hybrid three types.The radial field structure is meant that permanent magnet is according to the radial directed of rotor with magnetize; Tangential field structure formula refers to that permanent magnet is according to the tangential orientation of rotor with magnetize; Hybrid field structure is meant permanent magnet radially and tangentially inserting in the rotor core by rotor respectively.In above-mentioned three kinds of rotor structures, every group of permanent magnet all is that the form with monolithic is embedded in the rotor core or is arranged on the rotor core surface.The inventor found through experiments, and the magnet structure of present rotor is improved simply, can improve efficiency of motor.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of permanent-magnetic synchronous motor rotor, when the stator of this permanent-magnetic synchronous motor rotor and existing permagnetic synchronous motor is used, can improve efficiency of motor.
The technical solution adopted in the present invention is: a kind of permanent-magnetic synchronous motor rotor, comprise rotor core and cage type starting winding, and in rotor core, offer many permanent magnet trough, in every permanent magnet trough, be embedded with some groups of permanent magnets; On the outer circumference surface of rotor core, offer a plurality of grooves, cage type starting winding is arranged in the described groove, and wherein, each is organized permanent magnet and is made up of two permanent magnetic monomers, the shape of two permanent magnetic monomers and polarity orientation are all identical, are pulled together mutually by magnetic force.
Above-mentioned permanent-magnetic synchronous motor rotor adopts a kind of in built-in radial formula field structure, built-in tangential formula field structure and the built-in mixed field structure.
In a preferred implementation, on the rotor core of permanent-magnetic synchronous motor rotor, offer four permanent magnet trough, be embedded with one group of permanent magnet in each permanent magnet trough, four groups of permanent magnets are shoe shape, and equal and opposite in direction, along circumferentially uniformly-spaced being provided with; Wherein two groups of adjacent permanent magnets are provided with in N utmost point mode outwardly, and all the other two groups of permanent magnets are provided with in S utmost point mode outwardly; The N utmost point outwardly permanent magnet and S utmost point permanent magnet outwardly between be provided with magnet isolation tank, the radial height of magnet isolation tank is not less than the radial thickness of permanent magnet.
The present invention also provides a kind of permanent-magnetic synchronous motor rotor, this permanent-magnetic synchronous motor rotor adopts radial surface formula field structure, comprise rotor core, be provided with many group permanent magnets on the surface of rotor core, wherein, each is organized permanent magnet and is made up of two permanent magnetic monomers, and the shape of two permanent magnetic monomers and polarity orientation are all identical, are pulled together mutually by magnetic force.
After adopting technique scheme, every group of permanent magnet is made up of two permanent magnetic monomers, and the magnetic field intensity of generation is higher, and the magnetic line of force is more even, and efficiency of motor has obtained unforeseeable raising.
Description of drawings
Figure 1A is the structural representation of first kind of execution mode of permanent-magnetic synchronous motor rotor of the present invention;
Figure 1B is the permanent-magnetic synchronous motor rotor of first kind of execution mode of the present invention and the stator structural representation when being used;
Fig. 1 C is the permanent magnet arrangement mode schematic diagram when in first kind of execution mode of the present invention two groups of permanent magnets being set in every permanent magnet trough;
Fig. 2 is the structural representation of second kind of execution mode of permanent-magnetic synchronous motor rotor of the present invention;
Fig. 3 is the structural representation of the third execution mode of permanent-magnetic synchronous motor rotor of the present invention;
Fig. 4 is the structural representation of the 4th kind of execution mode of permanent-magnetic synchronous motor rotor of the present invention.
Embodiment
Figure 1A shows the structural representation of first kind of execution mode of permanent-magnetic synchronous motor rotor of the present invention.As shown in the figure, permanent-magnetic synchronous motor rotor of the present invention comprises rotor core 1 and cage type starting winding 2.Offer a plurality of grooves 11 on the outer circumference surface of rotor core 1, cage type starting winding 2 is arranged in the groove 11.Cage type starting winding is set utilizes the asynchronous starting torque to realize the motor self-starting, also can be used as damping winding simultaneously, improve the dynamic property of motor.Offer an axis hole 13 in the centre position of rotor core 1, this axis hole 13 is to be used to install the rotating shaft that connects rotor.Rotating shaft and rotor core also can be made of one the formula structure.In the present embodiment, permanent-magnetic synchronous motor rotor has adopted the field structure of built-in radial formula.On rotor core 1, offer four permanent magnet trough 10, be embedded with one group of permanent magnet 3 in every permanent magnet trough 10.Permanent magnet 3 is shoe shape, is distributed on the same circumference, along circumferentially uniformly-spaced being provided with.Wherein have two groups of adjacent permanent magnets to be provided with in N utmost point mode outwardly, all the other two groups of permanent magnets are provided with in S utmost point mode outwardly.The N utmost point outwardly permanent magnet and S utmost point permanent magnet outwardly between be provided with magnet isolation tank 12, the radial height of this magnet isolation tank is not less than the radial thickness of permanent magnet.In the present embodiment, magnet isolation tank be shaped as ellipse, utilize the air in the groove to play the effect that reduces the permanent magnet leakage field, also can in groove, insert nonmagnetic substance and realize function every magnetic.The topmost improvements of the present invention are, each is organized permanent magnet 3 and is made up of two permanent magnetic monomers 31, and the shape of these two permanent magnetic monomers 31 and polarity orientation are all identical, are pulled together mutually by magnetic force.Figure 1B shows the permanent-magnetic synchronous motor rotor of present embodiment and stator 4 and is used structural representation when forming permagnetic synchronous motor.The structure of stator 4 is same as the prior art, does not repeat them here.The present invention by with two permanent magnetic monomers each other adhesive stack and constitute one group of permanent magnet, efficiency of motor has obtained unforeseeable raising.Rotor structure with present embodiment is an example, it is the NdFeB material of N38SH that permanent magnet 3 adopts the trade mark, air gap between rotor and the stator is 1.45mm, under the condition that remains unchanged of radial thickness of each group permanent magnet, motor efficiency when each is organized permanent magnet 3 and is embedded in the rotor core with monolith forms is 75%, and according to the rotor structure of present embodiment, motor efficiency when being embedded in the rotor core with two permanent magnetic monomers, 31 formation permanent magnets 3 is 85%, has reached the level of permanent magnet direct current motor.
Two groups of permanent magnets also can be set in every permanent magnet trough, and its arrangement mode is shown in Fig. 1 C.In every permanent magnet trough, be provided with along tandem two groups of permanent magnets 3-1 of rotor longitudinal length and 3-2, two groups of permanent magnets are formed by two permanent magnetic monomers, the shape of two permanent magnetic monomers and polarity orientation are all identical, are pulled together mutually by magnetic force.In another kind of conversion embodiment, in every permanent magnet trough, be not limited to be provided with two groups of permanent magnets, can also be along tandem three groups of rotor longitudinal length, four groups of permanent magnets etc.
Fig. 2 is the structural representation of second kind of execution mode of permanent-magnetic synchronous motor rotor of the present invention.What in the present embodiment, permanent-magnetic synchronous motor rotor adopted also is the field structure of built-in radial formula.On rotor core 1, offer four permanent magnet trough 14, be embedded with one group of permanent magnet 3a in every permanent magnet trough 14.Four groups of permanent magnet 3a are rectangular shape, and size is identical, and four groups of permanent magnet 3a squarely shapes are embedded in the rotor core.Wherein two groups of permanent magnet opposed are provided with in N utmost point mode outwardly, and all the other two groups of permanent magnets are provided with in S utmost point mode outwardly.Each is organized permanent magnet 3a and is made up of two permanent magnetic monomers 31a, and the size of these two permanent magnetic monomers 31a, shape and polarity orientation are all identical, are pulled together mutually by magnetic force.In the present embodiment, the width of each permanent magnet trough 14 is all wide than permanent magnet 3a, and permanent magnet 3a is embedded the medium position in permanent magnet trough 14, at the two ends of permanent magnet trough 14 and be embedded between the permanent magnet in this permanent magnet trough and leave space 141.The effect of magnet isolation tank is played in space 141.
Fig. 3 is the structural representation of the third execution mode of permanent-magnetic synchronous motor rotor of the present invention.What in the present embodiment, permanent-magnetic synchronous motor rotor adopted also is the field structure of built-in radial formula.On rotor core 1, offer a L shaped permanent magnet trough 15 and one and fall L shaped permanent magnet trough 16, in permanent magnet trough 15 and permanent magnet trough 16, be embedded with two groups of permanent magnet 3b respectively.Four groups of permanent magnet 3b are rectangular shape, and size is identical.The polarity orientation of two groups of permanent magnets in same groove, and two groups of permanent magnets in the L shaped permanent magnet trough 15 are with to fall the polar arrangement mode of two groups of interior permanent magnets of L shaped permanent magnet trough 16 opposite.In Fig. 3, two groups of permanent magnets in the L shaped permanent magnet trough 15 all are provided with in S utmost point mode outwardly, and the L shaped permanent magnet trough 16 two groups of interior permanent magnets that fall all are provided with in N utmost point mode outwardly.Each is organized permanent magnet 3b and forms by two permanent magnetic monomers 31b, and the size of these two permanent magnetic monomers 31b, shape and polarity orientation are all identical, are pulled together mutually by magnetic force.In the present embodiment, leave space 151, and two groups of permanent magnet boundary parts, promptly the corner of L shaped permanent magnet trough leaves space 152 at the two ends of permanent magnet trough 15; Leave space 161 at the two ends of body magnetic groove 16 forever, and two permanent magnet boundary parts, promptly fall the corner of L shaped permanent magnet trough to leave space 162.The effect of magnet isolation tank has been played in the space.
Fig. 4 is the structural representation of the 4th kind of execution mode of permanent-magnetic synchronous motor rotor of the present invention.What in the present embodiment, permanent-magnetic synchronous motor rotor adopted is the field structure of built-in tangential formula.On rotor core 1, offer four permanent magnet trough 17, be embedded with one group of permanent magnet 3c in every permanent magnet trough 17.Four groups of permanent magnet 3c are rectangular shape, and size is identical, and four groups of permanent magnet across shapes are embedded in the rotor core 1.Wherein two groups of adjacent permanent magnets are partial to clockwise mode with the N utmost point and are provided with, and all the other two groups of permanent magnets are partial to clockwise mode with the S utmost point and are provided with.Each is organized permanent magnet 3c and is made up of two permanent magnetic monomers 31c, and the size of these two permanent magnetic monomers 31c, shape and polarity orientation are all identical, are pulled together mutually by magnetic force.
Permanent-magnetic synchronous motor rotor of the present invention is not limited to the above-mentioned several rotor structures that exemplify, and the present invention also can adopt built-in mixed field structure and radial surface formula field structure.In radial surface formula field structure, be provided with many group permanent magnets on the surface of rotor core, permanent magnet can protrude surface or the recessed rotor core surface that is arranged on rotor core.These permanent magnets are made tile shape, and by the radial directed of rotor with magnetize.No longer slot at the external peripheral surface of rotor core this moment.In the present invention, each is organized permanent magnet and is made up of two permanent magnetic monomers, and the shape of two permanent magnetic monomers and polarity orientation are all identical, are pulled together mutually by magnetic force.
Every group of permanent magnet of the present invention is made up of two permanent magnetic monomers, than same radial thickness, adopt the magnetic field intensity of permanent magnet of single monoblock form high by about 10%.
Though description of the invention combines certain embodiments, it should be understood by one skilled in the art that the present invention is not limited to embodiment described here, and can carry out various modifications and variations and do not deviate from the spirit and scope of the present invention.
Claims (10)
1. a permanent-magnetic synchronous motor rotor comprises rotor core and cage type starting winding, offers many permanent magnet trough in described rotor core, is embedded with some groups of permanent magnets in every permanent magnet trough; On the outer circumference surface of rotor core, offer a plurality of grooves, described cage type starting winding is arranged in the described groove, it is characterized in that: each is organized permanent magnet and is made up of two permanent magnetic monomers, and the shape of described two permanent magnetic monomers and polarity orientation are all identical, are pulled together mutually by magnetic force.
2. permanent-magnetic synchronous motor rotor as claimed in claim 1 is characterized in that, described permanent-magnetic synchronous motor rotor adopts built-in radial formula field structure.
3. permanent-magnetic synchronous motor rotor as claimed in claim 2, it is characterized in that, on the rotor core of described permanent-magnetic synchronous motor rotor, offer four permanent magnet trough, be embedded with one group of permanent magnet in each described permanent magnet trough, described four groups of permanent magnets are shoe shape, and equal and opposite in direction is along circumferentially uniformly-spaced being provided with; Wherein two groups of adjacent permanent magnets are provided with in N utmost point mode outwardly, and all the other two groups of permanent magnets are provided with in S utmost point mode outwardly; The described N utmost point outwardly permanent magnet and described S utmost point permanent magnet outwardly between be provided with magnet isolation tank, the radial height of described magnet isolation tank is not less than the radial thickness of permanent magnet.
4. permanent-magnetic synchronous motor rotor as claimed in claim 3 is characterized in that, described magnet isolation tank is oval.
5. permanent-magnetic synchronous motor rotor as claimed in claim 2, it is characterized in that, on the rotor core of described permanent-magnetic synchronous motor rotor, offer four permanent magnet trough, be embedded with one group of permanent magnet in each described permanent magnet trough, described four groups of permanent magnets are rectangular shape, size is identical, and described four groups of permanent magnet squarely shapes are embedded in the rotor core; Wherein two groups of permanent magnet opposed are provided with in N utmost point mode outwardly, and all the other two groups of permanent magnets are provided with in S utmost point mode outwardly; The width of each described permanent magnet trough is greater than the width of permanent magnet, the two ends of each permanent magnet trough and be embedded between the permanent magnet in this permanent magnet trough and leave the space.
6. permanent-magnetic synchronous motor rotor as claimed in claim 1 is characterized in that, described permanent-magnetic synchronous motor rotor adopts built-in tangential formula field structure.
7. permanent-magnetic synchronous motor rotor as claimed in claim 6, it is characterized in that, on the rotor core of described permanent-magnetic synchronous motor rotor, offer four permanent magnet trough, be embedded with one group of permanent magnet in each described permanent magnet trough, described four groups of permanent magnets are rectangular shape, size is identical, and described four groups of permanent magnet across shapes are embedded in the rotor core; Wherein two groups of adjacent permanent magnets are partial to clockwise mode with the N utmost point and are provided with, and all the other two groups of permanent magnets are partial to clockwise mode with the S utmost point and are provided with.
8. permanent-magnetic synchronous motor rotor as claimed in claim 1 is characterized in that described permanent-magnetic synchronous motor rotor adopts built-in mixed field structure.
9. permanent-magnetic synchronous motor rotor as claimed in claim 1 is characterized in that, offers an axis hole in the centre position of described rotor core.
10. permanent-magnetic synchronous motor rotor, described permanent-magnetic synchronous motor rotor adopts radial surface formula field structure, comprise rotor core, be provided with many group permanent magnets on the surface of described rotor core, it is characterized in that: each is organized permanent magnet and is made up of two permanent magnetic monomers, the shape of described two permanent magnetic monomers and polarity orientation are all identical, are pulled together mutually by magnetic force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100467019A CN101399474A (en) | 2007-09-29 | 2007-09-29 | Rotor for permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100467019A CN101399474A (en) | 2007-09-29 | 2007-09-29 | Rotor for permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101399474A true CN101399474A (en) | 2009-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100467019A Pending CN101399474A (en) | 2007-09-29 | 2007-09-29 | Rotor for permanent magnet synchronous motor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102457115A (en) * | 2011-12-19 | 2012-05-16 | 杭州中尚能源技术有限公司 | Combined permanent-magnet direct insertion type motor rotor with fixed plates |
| CN102738991A (en) * | 2011-12-20 | 2012-10-17 | 深圳市安托山特种机械有限公司 | Permanent magnet generator of permanent magnet intermediate-frequency combined magnetic circuit |
| CN102769348A (en) * | 2012-07-26 | 2012-11-07 | 岳群生 | Optimal rotor design method of radial permanent magnet synchronous motor |
| CN103368292A (en) * | 2012-03-26 | 2013-10-23 | 信质电机股份有限公司 | Novel structure of rotor punching sheet of permanent magnet motor |
| CN105915004A (en) * | 2016-06-06 | 2016-08-31 | 尚勤贵 | Rotor of motor |
| WO2016192581A1 (en) * | 2015-05-29 | 2016-12-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet motor rotor and permanent magnet synchronous motor |
| CN113839493A (en) * | 2021-08-20 | 2021-12-24 | 南京航空航天大学 | Mixed magnetic pole type permanent magnet synchronous motor with high magnetic resistance torque |
-
2007
- 2007-09-29 CN CNA2007100467019A patent/CN101399474A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102457115A (en) * | 2011-12-19 | 2012-05-16 | 杭州中尚能源技术有限公司 | Combined permanent-magnet direct insertion type motor rotor with fixed plates |
| CN102738991A (en) * | 2011-12-20 | 2012-10-17 | 深圳市安托山特种机械有限公司 | Permanent magnet generator of permanent magnet intermediate-frequency combined magnetic circuit |
| CN103368292A (en) * | 2012-03-26 | 2013-10-23 | 信质电机股份有限公司 | Novel structure of rotor punching sheet of permanent magnet motor |
| CN102769348A (en) * | 2012-07-26 | 2012-11-07 | 岳群生 | Optimal rotor design method of radial permanent magnet synchronous motor |
| WO2016192581A1 (en) * | 2015-05-29 | 2016-12-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet motor rotor and permanent magnet synchronous motor |
| CN105915004A (en) * | 2016-06-06 | 2016-08-31 | 尚勤贵 | Rotor of motor |
| CN113839493A (en) * | 2021-08-20 | 2021-12-24 | 南京航空航天大学 | Mixed magnetic pole type permanent magnet synchronous motor with high magnetic resistance torque |
| CN113839493B (en) * | 2021-08-20 | 2023-01-03 | 南京航空航天大学 | Mixed magnetic pole type permanent magnet synchronous motor with high magnetic resistance torque |
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Open date: 20090401 |