CN106357019A - Stator for reducing cogging torque of permanent magnet synchronous motor - Google Patents
Stator for reducing cogging torque of permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN106357019A CN106357019A CN201610962967.7A CN201610962967A CN106357019A CN 106357019 A CN106357019 A CN 106357019A CN 201610962967 A CN201610962967 A CN 201610962967A CN 106357019 A CN106357019 A CN 106357019A
- Authority
- CN
- China
- Prior art keywords
- stator
- synchronous motor
- cogging torque
- notch
- iron
- 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.)
- Pending
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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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a stator for reducing the cogging torque of a permanent magnet synchronous motor. The stator comprises an iron yoke, a stator coil and a grille, wherein multiple uniformly distributed notches are formed on the inner ring of the iron yoke; a pair of convex angles is processed on the two sides of each notch; the grille is inserted into the position between the convex angels on the two sides of the notches and the ends of the notches; the grille is fixed by the convex angles; the grille cooperates with the iron yoke to reduce the cogging torque of the permanent magnet synchronous motor; the stator coil is arranged on the inner sides of the notches; and the stator coil generates a rotating magnetic field to drive a rotor to rotate. In the invention, the cogging torque of the permanent magnet synchronous motor can be effectively reduced, and the motor performance is improved; and moreover, a stator winding can be embedded in a traditional winding way, and the processing and production are convenient.
Description
Technical field
The present invention relates to lathe designing permanent-magnet synchronous motor field, particularly one kind are used for reducing permagnetic synchronous motor teeth groove
The stator of torque.
Background technology
Electro spindle is the critical function part of modern machine, and internal motor is that its core drives.With permanent magnet material
Development, power density is big, and the permanent magnet synchronization motor spindle of efficiency high has been commonly used for machine industry.With unlike asynchronous machine
On the rotor of permagnetic synchronous motor, permanent magnet is installed, because magnetic field effect stator teeth groove has an active force to permanent magnet, this
Planting moment of torsion produced by active force is exactly cogging torque, and cogging torque can affect rotating speed in permagnetic synchronous motor low speed rotation
Stationarity, is the negative effect of this species motor.Because the cogging torque characteristic that to be permagnetic synchronous motor intrinsic, with prior art
Can not completely be eliminated, its impact can only be reduced.Therefore, design a kind of motor stator that can effectively reduce cogging torque to have
Important realistic meaning.
Content of the invention
Present invention aims to the defect that prior art exists, one kind is provided to be used for reducing permagnetic synchronous motor tooth
The stator of groove torque.
For reaching above-mentioned purpose, the present invention adopts following technical proposals:
A kind of stator for reducing permagnetic synchronous motor cogging torque, including iron yoke, stator coil, iron railings, in described iron yoke
Circle is provided with some equally distributed notches, is machined with a pair of salient angle, the salient angle of notch both sides and notch end in each notch both sides
Iron railings is assigned in position between portion, and described salient angle is fixed to iron railings, and described iron railings is coordinated with iron yoke to reduce permanent-magnet synchronous
Motor cogging torque；Stator coil is laid in the inner side of described notch, and stator coil produces rotating excitation field to affect rotor to rotate.
Described iron railings permeability magnetic material processes, and its length is identical with the length of iron yoke, and the shape of iron railings and notch
End and salient angle match.
The present invention compared with prior art, has and obviously projects substantive features and notable technological progress as follows:
The present invention can reduce the cogging torque of permagnetic synchronous motor effectively, reduce torque pulse during its low speed rotation, carry
The high performance of permagnetic synchronous motor.
Brief description
Fig. 1 is motor stator top view.
Fig. 2 is iron yoke schematic diagram.
Fig. 3 is to locate enlarged drawing in Fig. 2.
Fig. 4 is iron railings schematic diagram.
Fig. 5 is stator schematic three dimensional views.
Specific embodiment
Below in conjunction with the accompanying drawings, to the present invention be embodied as described in detail.
Referring to Fig. 1 ~ Fig. 4, a kind of stator for reducing permagnetic synchronous motor cogging torque, including iron yoke 1, stator coil
2nd, iron railings 3, described iron yoke 1 inner ring is provided with some equally distributed notches 11, is machined with a pair of salient angle in each notch 11 both sides
12, iron railings 3 is assigned in the position between the salient angle 12 of notch 11 both sides and notch 11 end, and described salient angle 12 carries out solid to iron railings 3
Fixed, described iron railings 3 is coordinated with iron yoke 1 to reduce permagnetic synchronous motor cogging torque；Stator line is laid in the inner side of described notch 11
Circle 2, stator coil 2 produces rotating excitation field to affect rotor to rotate.Described iron railings 3 is processed with permeability magnetic material, its length with
The length of iron yoke 1 is identical, and the end of the shape of iron railings 3 and notch 11 and salient angle 12 match, to improve stablizing of its installation
Property.
Claims (2)
1. a kind of stator for reducing permagnetic synchronous motor cogging torque, including iron yoke (1), stator coil (2), iron railings (3),
It is characterized in that, described iron yoke (1) inner ring is provided with some equally distributed notches (11), is machined with each notch (11) both sides
A pair of salient angle (12), iron railings (3) is assigned in the position between the salient angle (12) of notch (11) both sides and notch (11) end, described convex
Angle (12) is fixed to iron railings (3), and described iron railings (3) is coordinated with iron yoke (1) to reduce permagnetic synchronous motor cogging torque；Institute
Stator coil (2) is laid in the inner side stating notch (11), and stator coil (2) produces rotating excitation field to affect rotor to rotate.
2. the stator for reducing permagnetic synchronous motor cogging torque according to claim 1 is it is characterised in that described ferrum
Grid (3) are processed with permeability magnetic material, and its length is identical with the length of iron yoke (1), and the shape of iron railings (3) and notch (11)
End and salient angle (12) match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610962967.7A CN106357019A (en) | 2016-10-28 | 2016-10-28 | Stator for reducing cogging torque of permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610962967.7A CN106357019A (en) | 2016-10-28 | 2016-10-28 | Stator for reducing cogging torque of permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106357019A true CN106357019A (en) | 2017-01-25 |
Family
ID=57864559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610962967.7A Pending CN106357019A (en) | 2016-10-28 | 2016-10-28 | Stator for reducing cogging torque of permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106357019A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819138A (en) * | 1981-07-24 | 1983-02-04 | Tdk Corp | Magnetic wedge for rotary electric machine |
| JPH10229655A (en) * | 1997-02-14 | 1998-08-25 | Sanyo Electric Co Ltd | Ac motor |
| CN2512149Y (en) * | 2001-11-03 | 2002-09-18 | 王保钢 | Magnetic wedge |
| CN201352733Y (en) * | 2009-02-10 | 2009-11-25 | 太仓东元微电机有限公司 | Permanent-magnet motor with rotor magnetic steel with dovetail groove structure |
| CN205336005U (en) * | 2015-12-31 | 2016-06-22 | 浙江西子富沃德电机有限公司 | Magnetism slot wedge and have motor of this magnetism slot wedge |
-
2016
- 2016-10-28 CN CN201610962967.7A patent/CN106357019A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819138A (en) * | 1981-07-24 | 1983-02-04 | Tdk Corp | Magnetic wedge for rotary electric machine |
| JPH10229655A (en) * | 1997-02-14 | 1998-08-25 | Sanyo Electric Co Ltd | Ac motor |
| CN2512149Y (en) * | 2001-11-03 | 2002-09-18 | 王保钢 | Magnetic wedge |
| CN201352733Y (en) * | 2009-02-10 | 2009-11-25 | 太仓东元微电机有限公司 | Permanent-magnet motor with rotor magnetic steel with dovetail groove structure |
| CN205336005U (en) * | 2015-12-31 | 2016-06-22 | 浙江西子富沃德电机有限公司 | Magnetism slot wedge and have motor of this magnetism slot wedge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170125 |
|
| RJ01 | Rejection of invention patent application after publication |