CN205123535U - Synchronous motor that directly drives of permanent magnetism - Google Patents
Synchronous motor that directly drives of permanent magnetism Download PDFInfo
- Publication number
- CN205123535U CN205123535U CN201520945335.0U CN201520945335U CN205123535U CN 205123535 U CN205123535 U CN 205123535U CN 201520945335 U CN201520945335 U CN 201520945335U CN 205123535 U CN205123535 U CN 205123535U
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- China
- Prior art keywords
- permanent magnet
- rotor core
- stator
- semi
- motor
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- 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.)
- Withdrawn - After Issue
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- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model discloses a synchronous motor that directly drives of permanent magnetism, its rotor core suit are epaxial, and it has a plurality of semi -enclosed slots evenly to open along the outer periphery of rotor core, and the periphery facing has a plurality of permanent magnets outside rotor core. The embedment has epoxy in reaching each semi -enclosed slot between each permanent magnet, and two terminal surfaces of rotor core are furnished with non - conductive metallic end plate. The stator core of its stator evenly is equipped with a plurality of open slots along the periphery, and the notch of each open slot is inboard towards the stator, and each stator winding locates respectively in each open slot. All set up the magnetic conduction piece in each open slot notch department, the magnetic conduction piece is with each open slot notch shutoff. The utility model discloses the motor can improve the power of motor mass ratio, and structural reliability is high, and manufacturing process is simple, and motor response speed is fast. The harmonic content and the rotor loss of permanent -magnet machine air gap field reduce, have increased motor magnetic leakage factor and reactance, reduce short -circuit current, improve the operating point of permanent magnet, improve synchronous motor that directly drives of permanent magnetism's reliability.
Description
Technical field
The utility model relates to a kind of permanent magnet synchronous direct-driven motor, especially relates to the rotor of permanent magnet synchronous direct-driven motor and the structure of stator.
Background technology
The advantages such as permagnetic synchronous motor has high efficiency, high power density, overload capacity is strong, volume is little, lightweight, are widely applied in track traffic and industrial automation in recent years.
Conventional drives adopts the scheme of high-speed permanent magnetic synchronous motor acceleration and deceleration machine to realize low-speed direct driving and runs, but there is the problems such as efficiency is low, noise is large, maintenance cost is high, environmental pollution is serious; And permanent magnet synchronous direct-driven motor saves intermediate transmission mechanism, solve above problem, become the focus of track traffic and industrial automation research gradually.
Current traditional permanent magnet synchronous direct-driven motor, rotor adopts silicon steel sheet to be overrided to form, complex structure, and anti-vibrating and impact is indifferent, and reliability is not high; Rotor magnetic circuit structural adopts embedded or surface-mount type, and embedded magnetic structure magnet steel is fixed, but weight is large; Surface-mount type magnetic structure magnet steel manufacturing process is complicated, and reliability is not high, and weight is non-the lightest.
Tradition permanent magnet synchronous direct-driven motor, stator adopts open slot structure, and in motor rotary course, the changing greatly of magnetic field in air gap, the harmonic content in air-gap field improves, and core loss and rotor eddy current loss increase, and location torque and torque pulsation simultaneously increases.On the other hand, adopt this trench structure, the magnetic leakage factor of motor can reduce, and causes leakage reactance to reduce, and inductance reduces, and peak value short circuit current increases, and reduces permanent magnet working point in a short-circuit situation, improves the risk of permanent magnet short circuit loss of excitation.
Along with popularizing of power electronic device, magneto many employings frequency converter drags, in motor operation course, adopt frequency converter dragging can increase the harmonic content injecting stator winding electric current, further increase the harmonic content in motor gas-gap magnetic field, improve fixed core loss, rotor eddy current loss and the torque pulsation of motor.
Compared with stator, the radiating condition of rotor is poor, and the raising of rotor eddy current loss, the working temperature of permanent magnet can be improved, the degaussing flex point of permanent magnet is improved, add the risk that track traffic direct driving motor loss of excitation burns.Especially under this operating mode of high temperature short circuit.
Utility model content
Technical problem to be solved in the utility model, be the defect overcoming prior art existence, propose a kind of permanent magnet synchronous direct-driven motor, improve the structure of rotor and stator, rotor weight is light, reliability is high, stator structure, makes the harmonic content of magneto air-gap field and rotor loss reduce, adds motor flux leakage coefficient and reactance.
The utility model permanent magnet synchronous direct-driven motor, comprises axle, rotor core and stator; Rotor core suit on the shaft; It is characterized in that: evenly have some semi-enclosed slots along described rotor core outer circumference surface, described semi-enclosed slot is parallel to described axle; Rotor core outer circumference surface posts some permanent magnets; Embedding has epoxy resin between each permanent magnet and in each semi-enclosed slot; Rotor core two end faces are furnished with non-magnetic metal end plate; Each permanent magnet and two non-magnetic metal end plate periphery colligation glass tapes.
Described semi-enclosed slot, bottom inner diameter is little, and middle internal diameter is large, and notch indent, in groove shapes, rotor core is magnetic conductive metal material.
Each permanent magnet bottom surface described is equipped with boss, and permanent magnet boss embeds rotor core semi-enclosed slot notch, and permanent magnet is alternately arranged along rotor core circumference N, S pole, axial same polarity segmentation arrangement.
Further prioritization scheme is: described stator is made up of stator core, some stator winding; Stator core circumferentially face is evenly provided with some open slots, and the notch of each open slot is inside stator, and each stator winding is located in each open slot respectively; It is characterized in that: all arrange magnetic inductive block at each open slot notch place, magnetic inductive block is by the shutoff of each open slot notch.The harmonic content of magneto air-gap field can be effectively reduced, reduce rotor loss, increase motor flux leakage coefficient and reactance, reduce short circuit current, improve the working point of permanent magnet, improve the reliability of permanent magnet synchronous direct-driven motor.Described magnetic inductive block can be rectangle or abnormity, can be made by the composite material of ferromagnetic material or ferromagnetic material and resin.
The utility model can be widely used in track traffic and industrial automation, and improve power of motor mass ratio, structural reliability is high, and manufacturing process is simple, motor fast response time.Reduce the harmonic content of magneto air-gap field, reduce rotor loss, increase motor flux leakage coefficient and reactance, reduce short circuit current, improve the working point of permanent magnet, improve the reliability of permanent magnet synchronous direct-driven motor.
Accompanying drawing explanation
Fig. 1 is the rotor radial sectional view of a kind of permanent magnet synchronous direct-driven motor of the utility model.
Fig. 2 is the rotor core 3 dimensional drawing of a kind of permanent magnet synchronous direct-driven motor of the utility model.
Fig. 3 is the permanent magnet 3 dimensional drawing of the rotor of a kind of permanent magnet synchronous direct-driven motor of the utility model.
Fig. 4 be a kind of permanent magnet synchronous direct-driven motor rotor of the utility model each permanent magnet between and the epoxy resin 3 dimensional drawing that formed after encapsulated epoxy resin in each semi-enclosed slot.
Fig. 5 is non-magnetic metal end plate (ring-type) 3 dimensional drawing of the rotor of a kind of permanent magnet synchronous direct-driven motor of the utility model.
Fig. 6 is the 3 dimensional drawing of the rotor of a kind of permanent magnet synchronous direct-driven motor of the utility model.
Fig. 7 is the longitudinal section view of a kind of permanent magnet synchronous direct-driven motor stator of the utility model.
Fig. 8 is the scheme of installation of the magnetic inductive block of a kind of permanent magnet synchronous direct-driven motor stator of the utility model.
Embodiment
Below, referring to figs. 1 through Fig. 8, the utility model is described in further details.
Fig. 1 is the radial section figure of the rotor of a kind of permanent magnet synchronous direct-driven motor of the utility model.As shown in Figure 1, this rotor comprises: glass tape 101, permanent magnet 102, rotor core 104, axle 105.On described axle 105, hot jacket rotor core 104 and the non-magnetic metal end plate 113(in side are as shown in Figure 5,6).Evenly have some semi-enclosed slots 107 along described rotor core outer circumference surface, described semi-enclosed slot is parallel to described axle 105.Rotor core 104 outer circumference surface is equipped with permanent magnet 102, and between permanent magnet 102 and rotor core 104, contact-making surface is coated with glue bond.Between each permanent magnet, embedding has epoxy resin 103 in gap and in each semi-enclosed slot.After epoxy resin filling, at described another non-magnetic metal end plate of axle 105 opposite side hot jacket.At described two non-magnetic metal end plates and permanent magnet 102 outer surface overall binding glass tape 101, as shown in Figure 6.
Fig. 2 is the rotor core 3 dimensional drawing of a kind of permanent magnet synchronous direct-driven motor rotor of the utility model.As shown in Figure 2, this rotor core 104 possesses: teeth portion 106, semi-enclosed slot 107, yoke portion 108 and groove 114.Described teeth portion 106, semi-enclosed slot 107 and yoke portion 108 be the optimal design gained when not affecting power density and stress all.Described groove 114 is positioned at inside rotor core 104.Described rotor core 104 is magnetic conductive metal material, can adopt the machining or shaping rear machine work of die sinking.
Fig. 3 is the permanent magnet 3 dimensional drawing of the rotor of a kind of permanent magnet synchronous direct-driven motor of the utility model.As shown in Figure 3, there is boss 109 this permanent magnet 102 inner circle side, boss center line overlaps with permanent magnet center line, in manufacture process, rotor core exterior surface gluing, permanent magnet 102 boss embeds in rotor core semi-enclosed slot notch, has assembled successively, permanent magnet 102 is alternately arranged along rotor core 104 circumferential N, S, axial same polarity segmentation arrangement.
Fig. 4 is the shaped three dimensional stereogram after the epoxy resin encapsulated of a kind of permanent magnet synchronous direct-driven motor rotor of the utility model.As shown in Figure 4, the shape after this epoxy resin encapsulated is mouse cage shape, and it possesses: semi-closed port channel-shaped 110, ring-type 111 and sheet 112.Described semi-closed port channel-shaped 110 is positioned at semi-enclosed slot.Described ring-type 111 is between axial adjacent permanent magnet 102.Described sheet 112 is between axial adjacent permanent magnet 102.Described semi-closed port channel-shaped 110, ring-type 111 and sheet 112 contribute to improving rotor reliability, reduce rotor weight.
Fig. 5 is the non-magnetic metal end plate 3 dimensional drawing of the rotor of a kind of permanent magnet synchronous direct-driven motor of the utility model.As shown in Figure 5, this non-magnetic metal end plate is ring-type, and non-magnetic metal material is made, and external diameter is slightly less than rotor core 104 diameter and 2 times of magnet thickness sums, is assembled on axle 105 by the mode of hot jacket.
Fig. 6 is the rotor of a kind of permanent magnet synchronous direct-driven motor of the utility model and the 3 dimensional drawing of axle.As shown in Figure 6, this rotor adopts the utility model rotor scheme, and simple and reliable for structure, quality is low.
Fig. 7 is the sectional view of the stator of a kind of permanent magnet synchronous direct-driven motor of the utility model.As shown in Figure 7, described stator by stator iron, 115, some stator winding 116 form.Stator core circumferentially face is evenly provided with some open slots, and the notch of each open slot is inside stator, and each stator winding 116 is located in each open slot respectively.All arrange magnetic inductive block 117 at each open slot notch place, magnetic inductive block is by the shutoff of each open slot notch.The utility model, at the stator rabbet place of traditional permanent magnet synchronous direct-driven motor, increases magnetic inductive block 117.The harmonic content of magneto air-gap field can be effectively reduced, reduce rotor loss, increase motor flux leakage coefficient and reactance, reduce short circuit current, improve the working point of permanent magnet, improve the reliability of permanent magnet synchronous direct-driven motor.
Fig. 8 is the mounting means of the magnetic inductive block of a kind of permanent magnet synchronous direct-driven motor stator of the utility model, and as shown in Figure 8, magnetic inductive 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, comprises axle, rotor core and stator; Rotor core suit on the shaft; It is characterized in that: evenly have some semi-enclosed slots along described rotor core outer circumference surface, described semi-enclosed slot is parallel to described axle; Rotor core outer circumference surface posts some permanent magnets; Embedding has epoxy resin between each permanent magnet and in each semi-enclosed slot; Rotor core two end faces are furnished with non-magnetic metal end plate; Each permanent magnet and two non-magnetic metal end plate periphery colligation glass tapes.
2. permanent magnet synchronous direct-driven motor according to claim 1, it is characterized in that: described semi-enclosed slot, bottom inner diameter is little, and middle internal diameter is large, and notch indent, in groove shapes, rotor core is magnetic conductive metal material.
3. permanent magnet synchronous direct-driven motor according to claim 1, it is characterized in that: each permanent magnet bottom surface described is equipped with boss, permanent magnet boss embeds rotor core semi-enclosed slot notch, and permanent magnet is alternately arranged along rotor core circumference N, S pole, axial same polarity segmentation arrangement.
4. permanent magnet synchronous direct-driven motor according to claim 1, is characterized in that: described stator is made up of stator core, some stator winding; Stator core circumferentially face is evenly provided with some open slots, and the notch of each open slot is inside stator, and each stator winding is located in each open slot respectively; All arrange magnetic inductive block at each open slot notch place, magnetic inductive block is by the shutoff of each open slot notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520945335.0U CN205123535U (en) | 2015-11-24 | 2015-11-24 | Synchronous motor that directly drives of permanent magnetism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520945335.0U CN205123535U (en) | 2015-11-24 | 2015-11-24 | Synchronous motor that directly drives of permanent magnetism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205123535U true CN205123535U (en) | 2016-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520945335.0U Withdrawn - After Issue CN205123535U (en) | 2015-11-24 | 2015-11-24 | Synchronous motor that directly drives of permanent magnetism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205123535U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305685A (en) * | 2015-11-24 | 2016-02-03 | 南京埃斯顿自动控制技术有限公司 | Permanent magnet synchronous direct-drive motor |
-
2015
- 2015-11-24 CN CN201520945335.0U patent/CN205123535U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305685A (en) * | 2015-11-24 | 2016-02-03 | 南京埃斯顿自动控制技术有限公司 | Permanent magnet synchronous direct-drive motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Dong Dingfeng Inventor after: Kong Fanchen Inventor after: Li Qing Inventor after: An Yongle Inventor after: Wu Bo Inventor before: Dong Dingfeng Inventor before: Kong Fanchen Inventor before: Li Qing |
|
| COR | Change of bibliographic data | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160330 Effective date of abandoning: 20170718 |
|
| AV01 | Patent right actively abandoned |