CN105305685B - A kind of permanent magnet synchronous direct-driven motor - Google Patents
A kind of permanent magnet synchronous direct-driven motor Download PDFInfo
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- CN105305685B CN105305685B CN201510822404.3A CN201510822404A CN105305685B CN 105305685 B CN105305685 B CN 105305685B CN 201510822404 A CN201510822404 A CN 201510822404A CN 105305685 B CN105305685 B CN 105305685B
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- permanent magnet
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Abstract
The invention discloses a kind of permanent magnet synchronous direct-driven motor, its rotor core is sleeved on axle, and some semi-enclosed slots are uniformly provided with along rotor core outer circumference surface, and some permanent magnets are posted on rotor core outer circumference surface.Embedding has epoxy resin between each permanent magnet and in each semi-enclosed slot, and two end faces of rotor core are furnished with non-magnetic metal end plate.Circumferentially face is uniformly provided with some open slots to the stator core of its stator, and the notch of each open slot is towards stator inner side, and each stator winding is respectively arranged in each open slot.Magnetic inductive block is respectively provided with each open slot notch, magnetic inductive block blocks each open slot notch.Motor of the present invention, can improve power of motor mass ratio, and structural reliability is high, and manufacturing process is simple, motor fast response time.Harmonic content and the rotor loss reduction of magneto air-gap field, add motor flux leakage coefficient and reactance, reduce short circuit current flow, improve the operating point of permanent magnet, improve the reliability of permanent magnet synchronous direct-driven motor.
Description
Technical field
The present invention relates to a kind of permanent magnet synchronous direct-driven motor, more particularly, to the rotor and stator of permanent magnet synchronous direct-driven motor
Structure.
Background technology
Permagnetic synchronous motor has the advantages that high efficiency, high power density, overload capacity strong, small volume, lightweight, in recent years
To be widely applied in track traffic and industrial automation.
Conventional drives realize that low-speed direct driving is run using the scheme of high-speed permanent magnetic synchronous motor acceleration and deceleration machine, but deposit
The problems such as efficiency is low, noise is big, maintenance cost is high, environmental pollution is serious;And permanent magnet synchronous direct-driven motor saves intermediate transmission
Mechanism, solves problem above, is increasingly becoming the focus of track traffic and industrial automation research.
Current tradition permanent magnet synchronous direct-driven motor, rotor is overrided to form using silicon steel sheet, complex structure, anti-vibrating and impact energy
Power is not strong, and reliability is not high；Rotor magnetic circuit structural uses embedded or surface-mount type, and embedded magnetic structure magnet steel is fixed,
But weight is big；Surface-mount type magnetic structure magnet steel manufacturing process is complicated, and reliability is not high, and weight is non-most light.
Traditional permanent magnet synchronous direct-driven motor, stator is used in opening slot structure, motor rotary course, the change in magnetic field in air gap
Change larger, the harmonic content raising in air-gap field, core loss and rotor eddy current loss increase, while location torque and torque
Pulsation increase.On the other hand, using this trench structure, the magnetic leakage factor of motor can be reduced, and cause leakage reactance to reduce, inductance subtracts
It is small, the increase of peak value short circuit current flow, the operating point of reduction permanent magnet in a short-circuit situation improves the wind of the short-circuit loss of excitation of permanent magnet
Danger.
With the popularization of power electronic devices, dragged, in motor operation course, used using frequency converter more than magneto
Frequency converter dragging can increase the harmonic content of electric current in injection stator winding, further increase the harmonic wave in motor gas-gap magnetic field
Content, improves the fixed core loss of motor, rotor eddy current loss and torque pulsation.
Compared with stator, the radiating condition of rotor is poor, and the raising of rotor eddy current loss, can improve the work of permanent magnet
Temperature so that the degaussing flex point of permanent magnet is improved, and adds the risk that track traffic direct driving motor loss of excitation burns.Especially in high temperature
Under this operating mode of short circuit.
The content of the invention
The technical problems to be solved by the invention, are the defect for overcoming prior art to exist, it is proposed that a kind of permanent magnetism is same
Direct driving motor is walked, the structure of rotor and stator is improved, rotor weight is light, reliability is high, stator structure so that magneto gas
Harmonic content and the rotor loss reduction in gap magnetic field, add motor flux leakage coefficient and reactance.
Permanent magnet synchronous direct-driven motor of the present invention, including axle, rotor core and stator；Rotor core is set with the shaft；
It is characterized in that：Some semi-enclosed slots are uniformly provided with along the rotor core outer circumference surface, the semi-enclosed slot is parallel to the axle；
Some permanent magnets are posted on rotor core outer circumference surface；Embedding has asphalt mixtures modified by epoxy resin between each permanent magnet and in each semi-enclosed slot
Fat；Two end faces of rotor core are furnished with non-magnetic metal end plate；Each permanent magnet and two non-magnetic metal end plate peripheries are tied up
Prick glass tape.
The semi-enclosed slot, bottom inner diameter is small, and middle internal diameter is big, notch indent, and in groove shapes, rotor core is magnetic conduction
Metal material.
Each described permanent magnet bottom surface is equipped with boss, permanent magnet boss insertion rotor core semi-enclosed slot notch, permanent magnetism
Body is alternately arranged along rotor core circumference N, S pole, axial same polarity segmentation arrangement.
Further prioritization scheme is：The stator is made up of stator core, some stator winding；Stator core circumferentially face
Some open slots are uniformly provided with, the notch of each open slot is towards stator inner side, and each stator winding is respectively arranged in each open slot；
It is characterized in that：Magnetic inductive block is respectively provided with each open slot notch, magnetic inductive block blocks each open slot notch.Can effectively it drop
The harmonic content of low magneto air-gap field, reduces rotor loss, increase motor flux leakage coefficient and reactance, reduces short circuit electricity
Stream, improves the operating point of permanent magnet, improves the reliability of permanent magnet synchronous direct-driven motor.The magnetic inductive block can be rectangle or different
Shape, can be made by the composite of ferromagnetic material or ferromagnetic material and resin.
It present invention can be widely used in track traffic and industrial automation, improve power of motor mass ratio, structure
Reliability is high, and manufacturing process is simple, motor fast response time.The harmonic content of magneto air-gap field is reduced, rotor is reduced
Loss, increase motor flux leakage coefficient and reactance, reduce short circuit current flow, improve the operating point of permanent magnet, improve permanent-magnet synchronous direct drive
The reliability of motor.
Brief description of the drawings
Fig. 1 is a kind of rotor radial sectional view of permanent magnet synchronous direct-driven motor of the invention.
Fig. 2 is a kind of rotor core 3 dimensional drawing of permanent magnet synchronous direct-driven motor of the invention.
Fig. 3 is a kind of permanent magnet 3 dimensional drawing of the rotor of permanent magnet synchronous direct-driven motor of the invention.
Fig. 4 be a kind of permanent magnet synchronous direct-driven motor rotor of the invention each permanent magnet between and each semi-enclosed slot in fill
The epoxy resin 3 dimensional drawing formed after envelope epoxy resin.
Fig. 5 is a kind of non-magnetic metal end plate of the rotor of permanent magnet synchronous direct-driven motor of the invention（Ring-type）3 D stereo
Figure.
Fig. 6 is a kind of 3 dimensional drawing of the rotor of permanent magnet synchronous direct-driven motor of the invention.
Fig. 7 is a kind of longitudinal section view of permanent magnet synchronous direct-driven motor stator of the invention.
Fig. 8 is a kind of scheme of installation of the magnetic inductive block of permanent magnet synchronous direct-driven motor stator of the invention.
Embodiment
Hereinafter, referring to figs. 1 to Fig. 8, the present invention is described in further details.
Fig. 1 is a kind of radial cutaway view of the rotor of permanent magnet synchronous direct-driven motor of the invention.As shown in figure 1, the rotor bag
Include：Glass tape 101, permanent magnet 102, rotor core 104, axle 105.Hot jacket rotor core 104 and side on the axle 105
Non-magnetic metal end plate 113（As shown in Figure 5,6）.Some semi-enclosed slots 107 are uniformly provided with along the rotor core outer circumference surface,
The semi-enclosed slot is parallel to the axle 105.Permanent magnet 102, permanent magnet 102 are equipped with the outer circumference surface of rotor core 104
Contact surface gluing is bonded between rotor core 104.Embedding has ring in gap and in each semi-enclosed slot between each permanent magnet
Oxygen tree fat 103.After epoxy resin filling, in another non-magnetic metal end plate of the opposite side hot jacket of axle 105.Described two
The non-magnetic outer surface overall binding glass tape 101 of metal end plate and permanent magnet 102, as shown in Figure 6.
Fig. 2 is a kind of rotor core 3 dimensional drawing of permanent magnet synchronous direct-driven motor rotor of the invention.As shown in Fig. 2 should
Rotor core 104 possesses：Teeth portion 106, semi-enclosed slot 107, yoke portion 108 and groove 114.The teeth portion 106, semi-enclosed slot 107,
And yoke portion 108 is not in the case where influenceing power density and stress obtained by optimization design.The groove 114 is located at rotor core
104 inner sides.The rotor core 104 is magnetic conductive metal material, can be using machining after machining or die sinking shaping
.
Fig. 3 is a kind of permanent magnet 3 dimensional drawing of the rotor of permanent magnet synchronous direct-driven motor of the invention.As shown in figure 3, should
There is boss 109 the inner circle side of permanent magnet 102, and boss center line is overlapped with permanent magnet center line, in manufacturing process, rotor core exterior surface
In face gluing, the boss of permanent magnet 102 insertion rotor core semi-enclosed slot notch, assembling successively is completed, and permanent magnet 102 is along rotor iron
The circumference of core 104 N, S are alternately arranged, axial same polarity segmentation arrangement.
Fig. 4 is the shaped three dimensional stereogram after a kind of epoxy resin encapsulated of permanent magnet synchronous direct-driven motor rotor of the invention.
As shown in figure 4, being shaped as mouse cage shape after the epoxy resin encapsulated, it possesses：Semi-closed port channel-shaped 110, ring-type 111 and sheet
112.The semi-closed port channel-shaped 110 is located in semi-enclosed slot.The ring-type 111 is located between axially adjacent permanent magnet 102.It is described
Sheet 112 is located between axially adjacent permanent magnet 102.The semi-closed port channel-shaped 110, ring-type 111 and sheet 112 are favorably improved
Rotor reliability, reduces rotor weight.
Fig. 5 is a kind of non-magnetic metal end plate 3 dimensional drawing of the rotor of permanent magnet synchronous direct-driven motor of the invention.Such as Fig. 5
Shown, the non-magnetic metal end plate is ring-type, and non-magnetic metal material is made, and external diameter is slightly less than the diameter of rotor core 104 and 2 times
Magnet thickness sum, is assembled to by way of hot jacket on axle 105.
Fig. 6 is a kind of rotor of permanent magnet synchronous direct-driven motor of the invention and the 3 dimensional drawing of axle.As shown in fig. 6, this turn
Son uses rotor scheme of the present invention, and simple and reliable for structure, quality is low.
Fig. 7 is a kind of sectional view of the stator of permanent magnet synchronous direct-driven motor of the invention.As shown in fig. 7, the stator is by fixed
Sub- iron, 115, some stator winding 116 constitute.Circumferentially face is uniformly provided with some open slots, the groove of each open slot to stator core
Mouth is respectively arranged in each open slot towards stator inner side, each stator winding 116.Magnetic conduction is respectively provided with each open slot notch
Block 117, magnetic inductive block blocks each open slot notch.The present invention, at the stator rabbet of traditional permanent magnet synchronous direct-driven motor, increase
Magnetic inductive block 117.The harmonic content of magneto air-gap field can be effectively reduced, rotor loss is reduced, increases motor flux leakage
Coefficient and reactance, reduce short circuit current flow, improve the operating point of permanent magnet, improve the reliability of permanent magnet synchronous direct-driven motor.
Fig. 8 is a kind of mounting means of the magnetic inductive block of permanent magnet synchronous direct-driven motor stator of the invention, as shown in figure 8, magnetic conduction
Block is arranged on the nearly air gap side of notch of stator core open slot, can be rectangle or abnormity.
Claims (4)
1. permanent magnet synchronous direct-driven motor, including axle, rotor core and stator；Rotor core is set with the shaft；It is characterized in that：
Some semi-enclosed slots are uniformly provided with along the rotor core outer circumference surface, the semi-enclosed slot is parallel to the axle；In rotor iron
Some permanent magnets are posted on core outer circumference surface；Embedding has epoxy resin between each permanent magnet and in each semi-enclosed slot；Rotor
Two end faces of iron core are furnished with non-magnetic metal end plate；Each permanent magnet and two non-magnetic metal end plate periphery colligation glass fiber
Band.
2. permanent magnet synchronous direct-driven motor according to claim 1, it is characterized in that：The semi-enclosed slot, bottom inner diameter is small, middle
Internal diameter is big, notch indent, in groove shapes, and rotor core is magnetic conductive metal material.
3. permanent magnet synchronous direct-driven motor according to claim 1, it is characterized in that：Each described permanent magnet bottom surface is equipped with convex
Platform, permanent magnet boss insertion rotor core semi-enclosed slot notch, permanent magnet is alternately arranged along rotor core circumference N, S pole, axially
Same polarity segmentation arrangement.
4. permanent magnet synchronous direct-driven motor according to claim 1, it is characterized in that：The stator is by stator core, some stators
Winding is constituted；Circumferentially face is uniformly provided with some open slots to stator core, and the notch of each open slot is towards stator inner side, and each is determined
Sub- winding is respectively arranged in each open slot；It is respectively provided with magnetic inductive block at each open slot notch, magnetic inductive block is by each open slot notch
Closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510822404.3A CN105305685B (en) | 2015-11-24 | 2015-11-24 | A kind of permanent magnet synchronous direct-driven motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510822404.3A CN105305685B (en) | 2015-11-24 | 2015-11-24 | A kind of permanent magnet synchronous direct-driven motor |
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| Publication Number | Publication Date |
|---|---|
| CN105305685A CN105305685A (en) | 2016-02-03 |
| CN105305685B true CN105305685B (en) | 2017-07-18 |
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| CN201510822404.3A Active CN105305685B (en) | 2015-11-24 | 2015-11-24 | A kind of permanent magnet synchronous direct-driven motor |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245361A (en) * | 2018-10-08 | 2019-01-18 | 珠海格力电器股份有限公司 | Rotor, motor and air conditioner |
| JP2020129890A (en) * | 2019-02-08 | 2020-08-27 | 株式会社日立インダストリアルプロダクツ | Rotary electric machine and hoist system for elevator |
| CN111987827A (en) * | 2020-08-20 | 2020-11-24 | 重庆赛力盟电机有限责任公司 | Low-speed load direct-drive permanent magnet motor |
| CN111917208A (en) * | 2020-09-02 | 2020-11-10 | 无锡赛盈动力科技有限公司 | Combined magnetic steel of tricycle driving motor and assembly process thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3985281B2 (en) * | 1996-12-04 | 2007-10-03 | 株式会社デンソー | Rotating electric machine |
| CN102013778B (en) * | 2010-12-13 | 2012-07-04 | 哈尔滨工业大学 | Permanent magnet synchronous motor with wide field-weakening and speed regulation range |
| CN202737714U (en) * | 2012-06-06 | 2013-02-13 | 春城控股集团有限公司 | Brushless permanent magnetism direct current motor with sectional offset high speed rotor magnetic pole |
| CN203554105U (en) * | 2013-11-22 | 2014-04-16 | 西安正麒电气有限公司 | High-speed permanent magnet motor rotor protective structure |
| CN205123535U (en) * | 2015-11-24 | 2016-03-30 | 南京埃斯顿自动控制技术有限公司 | Synchronous motor that directly drives of permanent magnetism |
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Effective date of registration: 20190717 Address after: 211100 No. 155 General South Road, Jiangning Economic and Technological Development Zone, Nanjing City, Jiangsu Province Patentee after: Nanjing Estun Automation Co., Ltd. Address before: 211100 Jiangning Economic Development Zone, Jiangsu Province, general Avenue, No. 155, No. Patentee before: Nanjing Estun Automatic Control Technology Co., Ltd. |
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